diff --git a/.gitignore b/.gitignore
index 47b3c74..a85a7db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -12,3 +12,6 @@ publish/iching.js
 .prov/
 logs/
 .research/
+/data-acquisition/
+# Local JSON -> TS acquisition tooling depends on ignored /data-acquisition inputs.
+/scripts/data-acquisition/
diff --git a/apps/cli/src/__tests__/config-command.test.ts b/apps/cli/src/__tests__/config-command.test.ts
index db57b58..c71caa1 100644
--- a/apps/cli/src/__tests__/config-command.test.ts
+++ b/apps/cli/src/__tests__/config-command.test.ts
@@ -53,13 +53,14 @@ describe("config command", () => {
     await rm(dataDir, { recursive: true, force: true });
   });
 
-  test("list shows every persisted key, including castMethod, castMode, and taijituStyle", async () => {
+  test("list shows every persisted key, including language and cast settings", async () => {
     const { exitCode, stdout } = await runCli(dataDir, ["config", "list"]);
     expect(exitCode).toBe(0);
     // Every field that JsonConfigStore.DEFAULT_CONFIG persists must be visible.
     for (const key of [
       "theme",
       "motion",
+      "language",
       "color",
       "timezone",
       "glyphAnim",
@@ -78,6 +79,12 @@ describe("config command", () => {
     expect(stdout.trim()).toBe("auto");
   }, 20_000);
 
+  test("get language returns the default value", async () => {
+    const { exitCode, stdout } = await runCli(dataDir, ["config", "get", "language"]);
+    expect(exitCode).toBe(0);
+    expect(stdout.trim()).toBe("zh-Hant");
+  }, 20_000);
+
   test("get taijituStyle returns the default value", async () => {
     const { exitCode, stdout } = await runCli(dataDir, ["config", "get", "taijituStyle"]);
     expect(exitCode).toBe(0);
@@ -105,6 +112,14 @@ describe("config command", () => {
     expect(getResult.stdout.trim()).toBe("yarrow");
   }, 20_000);
 
+  test("set language en persists, reload reads en", async () => {
+    const setResult = await runCli(dataDir, ["config", "set", "language", "en"]);
+    expect(setResult.exitCode).toBe(0);
+    const getResult = await runCli(dataDir, ["config", "get", "language"]);
+    expect(getResult.exitCode).toBe(0);
+    expect(getResult.stdout.trim()).toBe("en");
+  }, 20_000);
+
   test("set castMode rejects yarrow (now out of castMode's domain)", async () => {
     const { exitCode, stderr } = await runCli(dataDir, ["config", "set", "castMode", "yarrow"]);
     expect(exitCode).not.toBe(0);
@@ -136,6 +151,12 @@ describe("config command", () => {
     expect(stderr.toLowerCase()).toContain("invalid value");
   }, 20_000);
 
+  test("set language rejects invalid value", async () => {
+    const { exitCode, stderr } = await runCli(dataDir, ["config", "set", "language", "latin"]);
+    expect(exitCode).not.toBe(0);
+    expect(stderr.toLowerCase()).toContain("invalid value");
+  }, 20_000);
+
   test("get unknown key reports error", async () => {
     const { exitCode, stderr } = await runCli(dataDir, ["config", "get", "notARealKey"]);
     expect(exitCode).not.toBe(0);
diff --git a/apps/cli/src/__tests__/scene-factories.test.ts b/apps/cli/src/__tests__/scene-factories.test.ts
index 9f778a1..80e2b3f 100644
--- a/apps/cli/src/__tests__/scene-factories.test.ts
+++ b/apps/cli/src/__tests__/scene-factories.test.ts
@@ -8,7 +8,12 @@ import { mkdtemp } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
 import { JsonlJournalStore } from "@iching/storage";
-import { BrowseScene, DetailScene, JournalScene } from "@iching/terminal";
+import {
+  BrowseScene,
+  DetailScene,
+  JournalScene,
+  ShuoGuaChapterScene,
+} from "@iching/terminal";
 import {
   makeBrowseFactory,
   makeJournalFactory,
@@ -42,6 +47,13 @@ describe("makeBrowseFactory", () => {
     expect(factory({ type: "openJournal" })).toBeNull();
     expect(factory({ type: "openSettings" })).toBeNull();
   });
+
+  test("typed openShuoguaChapter signal returns ShuoGuaChapterScene", () => {
+    const factory = makeBrowseFactory({ journal });
+    const scene = factory({ type: "openShuoguaChapter", chapter: 3, op: "nuclear" });
+    expect(scene).toBeInstanceOf(ShuoGuaChapterScene);
+    expect((scene as ShuoGuaChapterScene).getOp()).toBe("nuclear");
+  });
 });
 
 describe("makeJournalFactory", () => {
@@ -73,6 +85,17 @@ describe("makeJournalFactory", () => {
     expect(scene).toBeInstanceOf(BrowseScene);
   });
 
+  test("typed openShuoguaChapter returns ShuoGuaChapterScene", () => {
+    const factory = makeJournalFactory({
+      journal,
+      entries: [],
+      session: { cols: 80, rows: 24 },
+    });
+    const scene = factory({ type: "openShuoguaChapter", chapter: 6, op: "mirror" });
+    expect(scene).toBeInstanceOf(ShuoGuaChapterScene);
+    expect((scene as ShuoGuaChapterScene).getOp()).toBe("mirror");
+  });
+
   test("typed openJournal resets to JournalScene (j-from-replay path)", () => {
     const factory = makeJournalFactory({
       journal,
diff --git a/apps/cli/src/__tests__/style-union-parity.test.ts b/apps/cli/src/__tests__/style-union-parity.test.ts
new file mode 100644
index 0000000..bc6a8ca
--- /dev/null
+++ b/apps/cli/src/__tests__/style-union-parity.test.ts
@@ -0,0 +1,80 @@
+import { describe, test, expect } from "bun:test";
+import { STYLES, QUOTE_STYLES, type Hexagram } from "@iching/core";
+import { VALID_STYLES } from "../commands/hexagram.js";
+import { hexagramToJson } from "../output/json.js";
+
+/**
+ * U7 parity test — Style union, hardcoded enumeration lockstep.
+ *
+ * The four lists below MUST agree on the shape of the Style universe so
+ * future additions can't drift between them.
+ *
+ *   Style (type)   — types.ts
+ *   STYLES (array) — data/trigrams.ts (must match Style at runtime)
+ *   QUOTE_STYLES   — data/trigrams.ts (Style minus "st" minus "gc")
+ *   VALID_STYLES   — apps/cli/src/commands/hexagram.ts (Style minus "st")
+ *
+ * "gc" is in Style and VALID_STYLES but intentionally NOT in QUOTE_STYLES:
+ * 卦辭 is the root oracle, not a random-quotable commentary lineage.
+ */
+
+describe("Style union — parity across hardcoded lists", () => {
+  test("STYLES carries the full Style union (7 keys after U7)", () => {
+    expect(STYLES.sort()).toEqual(["dx", "en", "gc", "st", "te", "tu", "w"]);
+  });
+
+  test("QUOTE_STYLES is STYLES minus \"st\" minus \"gc\" (5 quote-able lineages)", () => {
+    const expected = STYLES.filter((s) => s !== "st" && s !== "gc").sort();
+    expect(QUOTE_STYLES.sort()).toEqual(expected);
+    expect(QUOTE_STYLES).not.toContain("gc");
+    expect(QUOTE_STYLES).not.toContain("st");
+  });
+
+  test("VALID_STYLES (CLI) is STYLES minus \"st\" — includes gc for explicit lookup", () => {
+    const expected = STYLES.filter((s) => s !== "st").sort();
+    expect([...VALID_STYLES].sort()).toEqual(expected);
+    expect(VALID_STYLES).toContain("gc");
+    expect(VALID_STYLES).not.toContain("st");
+  });
+});
+
+describe("hexagramToJson — conditional gc emission", () => {
+  function makeHex(overrides: Partial<Hexagram> = {}): Hexagram {
+    return {
+      u: "X",
+      n: "X",
+      p: "X",
+      ename: "X",
+      l: [1, 1, 1, 1, 1, 1],
+      dx: "dx",
+      tu: "tu",
+      en: "en",
+      te: "te",
+      w: "w",
+      yao: ["", "", "", "", "", ""],
+      yaoEn: ["", "", "", "", "", ""],
+      ...overrides,
+    };
+  }
+
+  test("legacy hexagram (no gc populated) — gc key absent from commentary", () => {
+    const json = hexagramToJson(1, makeHex()) as {
+      commentary: Record<string, unknown>;
+    };
+    expect("gc" in json.commentary).toBe(false);
+    expect(json.commentary).toMatchObject({
+      dx: "dx",
+      tu: "tu",
+      en: "en",
+      te: "te",
+      w: "w",
+    });
+  });
+
+  test("hexagram with gc populated — gc key present in commentary", () => {
+    const json = hexagramToJson(1, makeHex({ gc: "元亨利貞" })) as {
+      commentary: Record<string, unknown>;
+    };
+    expect(json.commentary.gc).toBe("元亨利貞");
+  });
+});
diff --git a/apps/cli/src/app/scene-factories.ts b/apps/cli/src/app/scene-factories.ts
index 7e6d460..7b4b90e 100644
--- a/apps/cli/src/app/scene-factories.ts
+++ b/apps/cli/src/app/scene-factories.ts
@@ -13,6 +13,7 @@ import {
   JournalScene,
   type Scene,
   type SceneFactory,
+  ShuoGuaChapterScene,
 } from "@iching/terminal";
 
 export interface SessionDims {
@@ -44,6 +45,9 @@ export function makeDetailScene(kw: number, deps: DetailDeps): DetailScene {
 export function makeBrowseFactory(deps: DetailDeps): SceneFactory {
   return (signal): Scene | null => {
     if (signal.type === "openDetail") return makeDetailScene(signal.kw, deps);
+    if (signal.type === "openShuoguaChapter") {
+      return new ShuoGuaChapterScene(signal.chapter, signal.op);
+    }
     return null;
   };
 }
@@ -68,6 +72,9 @@ export function makeJournalFactory(deps: JournalDeps): SceneFactory {
       return cs;
     }
     if (signal.type === "openDetail") return makeDetailScene(signal.kw, deps);
+    if (signal.type === "openShuoguaChapter") {
+      return new ShuoGuaChapterScene(signal.chapter, signal.op);
+    }
     if (signal.type === "openDictionary") return new BrowseScene();
     // `j` from a replayed CastScene inside the journal router → reset to the journal list.
     if (signal.type === "openJournal") return new JournalScene(deps.entries);
diff --git a/apps/cli/src/commands/config.ts b/apps/cli/src/commands/config.ts
index edf98f8..6903b1c 100644
--- a/apps/cli/src/commands/config.ts
+++ b/apps/cli/src/commands/config.ts
@@ -3,19 +3,125 @@ import { resolvePaths, JsonConfigStore } from "@iching/storage";
 import type { UserConfig } from "@iching/storage";
 import { outputJson, configToJson } from "../output/json.js";
 
-const CONFIG_SCHEMA: Record<string, { values?: string[]; description: string }> = {
-  theme:        { values: ["ink", "bone", "cinnabar", "jade", "river"], description: "Color theme" },
-  motion:       { values: ["default", "brisk", "deep", "reduced"], description: "Casting animation speed" },
-  color:        { values: ["auto", "always", "never"], description: "ANSI color mode" },
-  timezone:     { description: "Timezone (\"system\" or IANA name)" },
-  glyphAnim:    { values: ["noise", "dots", "radial", "sand"], description: "Glyph reveal animation" },
-  glyphFont:    { values: ["kaiti", "libian", "heiti"], description: "Glyph font" },
-  taijituStyle: { values: ["dots", "dense"], description: "Home-screen taijitu style" },
-  castMethod:   { values: ["coin", "yarrow"], description: "Cast method (coin or yarrow stalk ritual)" },
-  castMode:     { values: ["auto", "manual"], description: "Cast mode (auto or operator-guided)" },
+type ConfigEntry = {
+  values?: readonly string[];
+  description: string;
+  set: (cfg: UserConfig, value: string) => boolean;
 };
 
-const VALID_KEYS = Object.keys(CONFIG_SCHEMA);
+function isOneOf<const T extends readonly string[]>(
+  options: T,
+  value: string,
+): value is T[number] {
+  return options.includes(value as T[number]);
+}
+
+const THEME_VALUES = ["ink", "bone", "cinnabar", "jade", "river"] as const;
+const MOTION_VALUES = ["default", "brisk", "deep", "reduced"] as const;
+const COLOR_VALUES = ["auto", "always", "never"] as const;
+const LANGUAGE_VALUES = ["zh-Hans", "zh-Hant", "en"] as const;
+const GLYPH_ANIM_VALUES = ["noise", "dots", "radial", "sand"] as const;
+const GLYPH_FONT_VALUES = ["kaiti", "libian", "heiti"] as const;
+const TAIJITU_STYLE_VALUES = ["dots", "dense"] as const;
+const CAST_METHOD_VALUES = ["coin", "yarrow"] as const;
+const CAST_MODE_VALUES = ["auto", "manual"] as const;
+
+const CONFIG_SCHEMA: Record<keyof UserConfig, ConfigEntry> = {
+  theme: {
+    values: THEME_VALUES,
+    description: "Color theme",
+    set: (cfg, value) => {
+      if (!isOneOf(THEME_VALUES, value)) return false;
+      cfg.theme = value;
+      return true;
+    },
+  },
+  motion: {
+    values: MOTION_VALUES,
+    description: "Casting animation speed",
+    set: (cfg, value) => {
+      if (!isOneOf(MOTION_VALUES, value)) return false;
+      cfg.motion = value;
+      return true;
+    },
+  },
+  language: {
+    values: LANGUAGE_VALUES,
+    description: "Display language (简, 繁, or English)",
+    set: (cfg, value) => {
+      if (!isOneOf(LANGUAGE_VALUES, value)) return false;
+      cfg.language = value;
+      return true;
+    },
+  },
+  color: {
+    values: COLOR_VALUES,
+    description: "ANSI color mode",
+    set: (cfg, value) => {
+      if (!isOneOf(COLOR_VALUES, value)) return false;
+      cfg.color = value;
+      return true;
+    },
+  },
+  timezone: {
+    description: "Timezone (\"system\" or IANA name)",
+    set: (cfg, value) => {
+      cfg.timezone = value;
+      return true;
+    },
+  },
+  glyphAnim: {
+    values: GLYPH_ANIM_VALUES,
+    description: "Glyph reveal animation",
+    set: (cfg, value) => {
+      if (!isOneOf(GLYPH_ANIM_VALUES, value)) return false;
+      cfg.glyphAnim = value;
+      return true;
+    },
+  },
+  glyphFont: {
+    values: GLYPH_FONT_VALUES,
+    description: "Glyph font",
+    set: (cfg, value) => {
+      if (!isOneOf(GLYPH_FONT_VALUES, value)) return false;
+      cfg.glyphFont = value;
+      return true;
+    },
+  },
+  taijituStyle: {
+    values: TAIJITU_STYLE_VALUES,
+    description: "Home-screen taijitu style",
+    set: (cfg, value) => {
+      if (!isOneOf(TAIJITU_STYLE_VALUES, value)) return false;
+      cfg.taijituStyle = value;
+      return true;
+    },
+  },
+  castMethod: {
+    values: CAST_METHOD_VALUES,
+    description: "Cast method (coin or yarrow stalk ritual)",
+    set: (cfg, value) => {
+      if (!isOneOf(CAST_METHOD_VALUES, value)) return false;
+      cfg.castMethod = value;
+      return true;
+    },
+  },
+  castMode: {
+    values: CAST_MODE_VALUES,
+    description: "Cast mode (auto or operator-guided)",
+    set: (cfg, value) => {
+      if (!isOneOf(CAST_MODE_VALUES, value)) return false;
+      cfg.castMode = value;
+      return true;
+    },
+  },
+};
+
+const VALID_KEYS = Object.keys(CONFIG_SCHEMA) as Array<keyof typeof CONFIG_SCHEMA>;
+
+function isConfigKey(key: string): key is keyof typeof CONFIG_SCHEMA {
+  return key in CONFIG_SCHEMA;
+}
 
 export function registerConfigCommand(program: Command): void {
   const config = program
@@ -37,7 +143,7 @@ export function registerConfigCommand(program: Command): void {
         outputJson(cfg);
       } else {
         for (const key of VALID_KEYS) {
-          const value = cfg[key as keyof UserConfig];
+          const value = cfg[key];
           const schema = CONFIG_SCHEMA[key];
           const valid = schema.values ? ` (${schema.values.join("|")})` : "";
           console.log(`  ${key.padEnd(12)} = ${value}${valid}`);
@@ -57,12 +163,12 @@ export function registerConfigCommand(program: Command): void {
       const store = new JsonConfigStore(paths.config);
       const cfg = await store.load();
 
-      if (!VALID_KEYS.includes(key)) {
+      if (!isConfigKey(key)) {
         console.error(`Unknown key "${key}". Valid keys: ${VALID_KEYS.join(", ")}`);
         process.exit(1);
       }
 
-      const value = cfg[key as keyof UserConfig];
+      const value = cfg[key];
       if (globalOpts.json) {
         outputJson(configToJson(key, value));
       } else {
@@ -83,7 +189,7 @@ export function registerConfigCommand(program: Command): void {
       const store = new JsonConfigStore(paths.config);
       const cfg = await store.load();
 
-      if (!VALID_KEYS.includes(key)) {
+      if (!isConfigKey(key)) {
         console.error(`Unknown key "${key}". Valid keys: ${VALID_KEYS.join(", ")}`);
         process.exit(1);
       }
@@ -95,9 +201,10 @@ export function registerConfigCommand(program: Command): void {
         process.exit(1);
       }
 
-      // Validated above against CONFIG_SCHEMA + VALID_KEYS, so the assignment is sound;
-      // the double cast through unknown acknowledges that TS can't track that proof here.
-      (cfg as unknown as Record<string, string>)[key] = value;
+      if (!schema.set(cfg, value)) {
+        console.error(`Invalid value "${value}" for ${key}. Valid: ${schema.values?.join(", ") ?? "any string"}`);
+        process.exit(1);
+      }
       await store.save(cfg);
 
       if (globalOpts.json) {
diff --git a/apps/cli/src/commands/hexagram.ts b/apps/cli/src/commands/hexagram.ts
index e25758d..52c9154 100644
--- a/apps/cli/src/commands/hexagram.ts
+++ b/apps/cli/src/commands/hexagram.ts
@@ -4,14 +4,19 @@ import type { Style } from "@iching/core";
 import { formatHexagramPlain } from "../output/plain.js";
 import { outputJson, hexagramToJson } from "../output/json.js";
 
-const VALID_STYLES = ["dx", "tu", "en", "te", "w"];
+/**
+ * Valid --style choices. Mirrors @iching/core STYLES minus "st" (which is
+ * a synthetic trigram-structure path, not a commentary field) — parity is
+ * locked by style-union-parity.test.ts.
+ */
+export const VALID_STYLES = ["dx", "tu", "en", "te", "w", "gc"];
 
 export function registerHexagramCommand(program: Command): void {
   program
     .command("hexagram")
     .description("Look up hexagram by King Wen number (1-64)")
     .argument("<n>", "hexagram number (1-64)")
-    .option("--style <style>", "commentary style: dx|tu|en|te|w")
+    .option("--style <style>", `commentary style: ${VALID_STYLES.join("|")}`)
     .action((n: string, cmdOpts) => {
       const num = Number(n);
       if (!Number.isInteger(num) || num < 1 || num > 64) {
@@ -30,6 +35,15 @@ export function registerHexagramCommand(program: Command): void {
         process.exit(1);
       }
 
+      // Style keys for optional Hexagram fields ("gc") may not yet be
+      // populated. Error cleanly instead of emitting an empty line.
+      if (style === "gc" && !hex.gc) {
+        console.error(
+          `卦辭 (gc) is not yet populated for hexagram ${num}. Try another style or omit --style.`,
+        );
+        process.exit(1);
+      }
+
       if (globalOpts.json) {
         outputJson(hexagramToJson(num, hex));
       } else {
diff --git a/apps/cli/src/main.ts b/apps/cli/src/main.ts
index 9b7f459..b541ff3 100644
--- a/apps/cli/src/main.ts
+++ b/apps/cli/src/main.ts
@@ -150,6 +150,7 @@ async function main() {
           const config = await configStore.load();
           const settingsScene = new SettingsScene({
             theme: config.theme,
+            language: config.language,
             taijituStyle: config.taijituStyle,
             glyphAnim: config.glyphAnim,
             glyphFont: config.glyphFont,
@@ -162,6 +163,7 @@ async function main() {
             const updated = settingsScene.getValues();
             const newConfig = await configStore.load();
             newConfig.theme = updated.theme;
+            newConfig.language = updated.language;
             newConfig.taijituStyle = updated.taijituStyle;
             newConfig.glyphAnim = updated.glyphAnim;
             newConfig.glyphFont = updated.glyphFont;
diff --git a/apps/cli/src/output/json.ts b/apps/cli/src/output/json.ts
index d12e932..8ce5fb7 100644
--- a/apps/cli/src/output/json.ts
+++ b/apps/cli/src/output/json.ts
@@ -42,6 +42,7 @@ export function castToJson(
       diagonal: cast.diagonal,
     },
     commentary: {
+      ...(primary.gc !== undefined ? { gc: primary.gc } : {}),
       dx: primary.dx,
       tu: primary.tu,
       en: primary.en,
@@ -63,6 +64,7 @@ export function hexagramToJson(
     symbol: hex.u,
     lines: hex.l,
     commentary: {
+      ...(hex.gc !== undefined ? { gc: hex.gc } : {}),
       dx: hex.dx,
       tu: hex.tu,
       en: hex.en,
diff --git a/apps/cli/src/output/plain.ts b/apps/cli/src/output/plain.ts
index 4b27b01..549e59b 100644
--- a/apps/cli/src/output/plain.ts
+++ b/apps/cli/src/output/plain.ts
@@ -61,6 +61,7 @@ export function formatCastPlain(
 
   // Commentary
   lines.push("Commentary:");
+  if (primary.gc) lines.push(`  卦辭 (gc): ${primary.gc}`);
   lines.push(`  大象 (dx): ${primary.dx}`);
   lines.push(`  彖傳 (tu): ${primary.tu}`);
   lines.push(`  Image (en): ${primary.en}`);
@@ -93,9 +94,12 @@ export function formatHexagramPlain(
   if (style && style !== "st") {
     // Show only requested commentary style. "st" means structure-only —
     // the trigram block above already covers it, so we skip the commentary.
-    lines.push(hex[style]);
+    // Optional Style keys ("gc") fall back to empty if unpopulated; the
+    // CLI command layer (commands/hexagram.ts) catches that case earlier.
+    lines.push(hex[style] ?? "");
   } else if (!style) {
     // Show all commentary styles
+    if (hex.gc) lines.push(`卦辭 (gc): ${hex.gc}`);
     lines.push(`大象 (dx): ${hex.dx}`);
     lines.push(`彖傳 (tu): ${hex.tu}`);
     lines.push(`Image (en): ${hex.en}`);
diff --git a/docs/data-layers.md b/docs/data-layers.md
new file mode 100644
index 0000000..64c789f
--- /dev/null
+++ b/docs/data-layers.md
@@ -0,0 +1,169 @@
+# Data Layers
+
+How the I Ching app composes per-hexagram data from canonical sources, project authorship, and computed structure. This doc is the contract for adding new layers; if you change one of the conventions here, change this doc in the same commit.
+
+## What ships
+
+After the data-enrichment wave (`docs/plans/2026-05-30-001-feat-data-enrichment-plan.md`), the per-hexagram data surface is:
+
+```
+                    canonical zh                 English             computed / authored
+                    ────────────                 ───────             ───────────────────
+root oracle         gc (卦辭)                    gcEn (Legge)        —
+judgment commentary tu (彖傳)                    te                  w (Wilhelm-flavored
+                                                                      synthesis, project-authored)
+image commentary    dx (大象傳)                  en                  —
+line texts          yao[6] (爻辭)                yaoEn[6]            —
+line commentary     yaoXiao[6] (小象傳)          yaoXiaoEn[6]?       —
+full translation    —                            legge.judgment      —
+                                                 legge.image
+                                                 legge.lines[6 or 7]
+trigram catalogue   TrigramInfo.assoc            TRIGRAM_ASSOC_GLOSS_EN —
+                    (image, family, body,        (project-authored
+                     animal, direction,           short glosses,
+                     attribute, extendedImages)   labeled non-canonical)
+sequence narrative  XU_GUA[i].text (序卦傳)      .textEn (Legge)     —
+contrast pair       ZA_GUA[i].text (雜卦傳)      LEGGE_ZAGUA_EN     —
+                                                  (separate index;
+                                                  46 entries vs ZA_GUA's 53)
+trigram chapters    SHUO_GUA.chapters (說卦傳)    LEGGE_SHUOGUA_EN   —
+                                                  (Legge's 22 paras
+                                                   vs canonical 11)
+relations overlay   —                            —                  CastConnections —
+                                                                    xuGua, zaGuaPair,
+                                                                    shuoguaCitations
+numeric derivations —                            —                  nuclear, polarity,
+                                                                    mirror, diagonal,
+                                                                    becoming, isLocked
+```
+
+## Canonical vs editorial — the split
+
+**Canonical text** is verbatim PD content with source provenance. The verification chain is:
+
+| Layer | Primary source | Cross-check | License |
+|---|---|---|---|
+| `gc`, `yaoXiao` | ctext.org/book-of-changes/{slug} | zh.wikisource.org/wiki/周易 | ancient Zhou Yi + Ten Wings, PD |
+| `XU_GUA`, `ZA_GUA` | ctext.org/book-of-changes/xu-gua, .../za-gua | zh.wikisource.org | Ten Wings, PD |
+| `SHUO_GUA.chapters`, `TRIGRAM_ASSOC` (named fields) | ctext.org/book-of-changes/shuo-gua | zh.wikisource + 3 PD mirrors | Ten Wings, PD |
+| `legge.*`, `LEGGE_*_EN` | archive.org SBE16 plaintext | sacred-texts.com + Wikisource | Legge d. 1897, SBE Vol 16 pub. 1882 — PD worldwide |
+
+**Editorial** content is project-supplied and labeled as such everywhere it renders:
+
+| Field | Why it's editorial | Where labeled |
+|---|---|---|
+| `TRIGRAM_ASSOC[k].season`, `.cosmologicalRole`, `.other` | English glosses in parens (e.g. "late autumn / early winter") synthesized for downstream UX, not in 說卦 source | optional in `TrigramAssoc`; UI must surface as "derived" |
+| `TRIGRAM_ASSOC_GLOSS_EN` | project-authored short English labels (father / head / horse / northwest / strength) — not from Legge or Wilhelm/Baynes | file-head comment + dedicated `TrigramAssocGloss` interface; UI must surface as "project gloss" |
+| `Hexagram.w` (Wilhelm-flavored synthesis) | project paraphrase; some entries contain verbatim Wilhelm/Baynes phrasing flagged by the session's overlap scan (separate cleanup track) | declared at types.ts ("Inspired by Wilhelm — experimental, not direct quotes") |
+| `Hexagram.en`, `.te`, `.yaoEn` | anonymous modern English — author/lineage not declared; reads modern-paraphrase | de facto editorial; treat as project content |
+
+The boundary matters at two surfaces:
+
+1. **Rendering** — when a section displays a value, it must be clear whether that value carries canonical authority. The detail renderer dims project glosses (`fg: t.tertiary, dim: true`) and surfaces canonical text in primary color.
+2. **Acquisition** — when a new layer is added, every text field gets categorized as canonical OR editorial. Editorial fields are typed optional; canonical fields are required (or optional only when not yet acquired).
+
+## File-per-corpus convention
+
+Each canonical-text layer lives in its own `data/*.ts` module:
+
+```
+packages/core/src/data/
+  gua.ts            — 64 Hexagram entries (the main surface; carries optional
+                      gc, gcEn, yaoXiao, yaoXiaoEn, legge fields backfilled
+                      from per-corpus modules below)
+  trigrams.ts       — TRIGRAMS[8] (TrigramInfo + assoc wiring),
+                      TRIGRAM_ASSOC_GLOSS_EN (project glosses)
+  xugua.ts          — XU_GUA[64] (序卦), XU_GUA_META
+  zagua.ts          — ZA_GUA[53] (雜卦), ZA_GUA_BY_HEX, ZA_GUA_META
+  shuogua.ts        — SHUO_GUA.chapters[11] + TRIGRAM_ASSOC[8], SHUOGUA_META
+  legge.ts          — LEGGE_XUGUA_EN[64], LEGGE_ZAGUA_EN[46],
+                      LEGGE_SHUOGUA_EN[22], LEGGE_META
+  large-glyphs.ts   — pre-existing Braille glyph data
+```
+
+Conventions:
+
+- One named const per primary data structure. Plural uppercase name (`GUA`, `TRIGRAMS`, `XU_GUA`, `LEGGE_XUGUA_EN`). No default exports.
+- Each module ships a sibling `*_META` const carrying `source`, `crossChecks`, `license`, `notes`. The meta block is honest about editorial decisions (chapter chunking conventions, mislabellings inherited from the source, etc.).
+- Per-hexagram data in 64-entry arrays uses 0-based indexing — `GUA[kw - 1]`.
+- Per-hexagram lookup maps use 1-based keys — `LEGGE_XUGUA_EN[kw]`, `ZA_GUA_BY_HEX[kw]`.
+- New canonical text is added by:
+  1. Pulling from PD source(s) with adversarial verification (see the workflow in U8 / U9 of the data-enrichment plan as the template).
+  2. Writing the verified JSON to `data-acquisition/` (gitignored).
+  3. Generating the data module via a Python script that reads the JSON.
+  4. Re-exporting from `packages/core/src/index.ts`.
+  5. Adding integrity tests (length, sequential indices, verification anchors, no encoding drift).
+
+## Optional-field discipline on Hexagram + TrigramInfo
+
+Every data-enrichment field on `Hexagram` and `TrigramInfo` is **optional** (`?:`). This is load-bearing:
+
+- The legacy 11 `Hexagram` fields (`u`, `n`, `p`, `ename`, `l`, `dx`, `tu`, `en`, `te`, `w`, `yao`, `yaoEn`) remain required. No existing consumer needs to change.
+- The 5 added `Hexagram` fields (`gc`, `gcEn`, `yaoXiao`, `yaoXiaoEn`, `legge`) and 1 added `TrigramInfo` field (`assoc`) are optional. Renderers gate on presence (`if (gua.gc) { ... }`) so a hexagram entry that lacks a field renders the same as before that field existed.
+- The `Style` union grows in lockstep with the field set. After U7, `Style = "dx" | "tu" | "en" | "te" | "w" | "st" | "gc"`. `QuoteStyle` (used by the random-quote selector) **deliberately excludes "gc"** because 卦辭 is the root oracle, not a random-quotable commentary lineage. `STYLES`, `QUOTE_STYLES`, and `VALID_STYLES` (CLI) are kept in agreement by the parity test at `apps/cli/src/__tests__/style-union-parity.test.ts`.
+
+When you add a new optional field:
+
+1. Mark it `?:` in `types.ts`. Comment what populates it and which unit.
+2. If it's a single-string commentary field that goes through `g[style]` dynamic access, add the key to `Style` AND fix the consumer sites (`format/reading.ts:31`, `output/plain.ts:96`, `commands/hexagram.ts`) AS ONE COMMIT — the parity test catches drift.
+3. If it's array-valued (like `yaoXiao`), do NOT add to `Style` — keep direct-access only (matching the `yao` convention).
+4. The renderer extension is per-section: a new label + the rendering pattern of choice (single-row, voice-stacked, or annotation).
+
+## Stacked-voice rendering
+
+For text that carries multiple translation lineages (Judgment, Image, line readings, 卦辭), the detail renderer iterates voices in fixed order:
+
+```
+1. zh canonical            primary color, bold
+2. modern English          secondary
+3. Wilhelm-flavored        secondary, dim
+4. Legge (1882)            tertiary, dim
+```
+
+Each voice row only emits when its content exists. The `renderStackedVoices(node: VoiceNode)` helper in `detail-renderer.ts` handles this — passing `{ zh, modernEn?, wilhelmEn?, leggeEn? }` causes only the populated rows to render. The same `VoiceNode` shape is used by the 卦辭 section (where only zh + Legge en exist — no modern, no Wilhelm).
+
+For the Image / Judgment sections and the per-line yao block, U10 ships Legge as a single dim sibling row under the existing English translation rather than a full helper refactor. The `Section` type in `detail-renderer.ts:buildContentLines` carries an optional `legge` string per section, surfaced when `gua.legge` is populated.
+
+The Wings (序卦, 雜卦, 說卦 chapters) have no Wilhelm lineage — the voice stack naturally degrades to zh + Legge when rendered.
+
+## Orbit-integrity invariant — the sanity check for 雜卦
+
+The most satisfying probe on the Wings data is geometric. The 雜卦傳 pairs hexagrams via the same `mirror(h) !== h ? mirror(h) : polarity(h)` rule that drives the King Wen sequence: 28 mirror-pairs plus 4 polarity-pairs (for the 8 self-mirror hexagrams — 1/2, 27/28, 29/30, 61/62) cover 64 hexagrams in 32 canonical pairs.
+
+The famously disordered final stretch of 雜卦傳 breaks this rule. The disordered hexagrams — **大過 (28), 姤 (44), 漸 (53), 頤 (27), 既濟 (63), 歸妹 (54), 未濟 (64), 夬 (43)** — are preserved as-is per recognized textual feature (not normalized to fit the pair geometry).
+
+The integrity test (`packages/core/src/__tests__/connections.test.ts`, "orbit-integrity invariant" describe block) asserts:
+
+```
+for every non-tail hex h:
+  let entry = ZA_GUA_BY_HEX[h]
+  if entry.pair.length === 2:
+    let partner = mirror(h) !== h ? mirror(h) : polarity(h)
+    assert: entry.pair contains partner
+```
+
+Disagreement on a non-tail hexagram = a real pull bug or upstream source corruption. Disagreement on a whitelisted tail hexagram = expected, the canon's irregularity.
+
+This invariant catches silent regressions: if a future re-pull replaces a 2-element pair entry with a wrong partner, the test fails immediately. The disordered tail is encoded as a `DISORDERED_TAIL` Set; updates to the canon (or different editorial choices about which hexagrams count as "disordered") flow through one constant.
+
+## Adding a new layer — the recipe
+
+1. **Decide canonical vs editorial.** Categorize every text field.
+2. **Pull with adversarial verification.** Multi-source pull + 3 lenses (completeness, source-fidelity, structural cleanliness). The U8 + U9 workflows are templates; copy and adapt.
+3. **Output to `data-acquisition/`.** Verified JSON, gitignored.
+4. **Generate the data module via Python.** Read JSON, emit `data/*.ts` with named const + `_META` + integrity-helping reverse indexes if applicable. Preserve traditional Chinese encoding (`無` over `无`, with `无妄` protected as canonical hex 25 name).
+5. **Backfill into the main surfaces.** `GUA[i].*?` for per-hexagram fields, `TrigramInfo.assoc` for trigram-level, etc. Backfill via Python — never sed/awk for multi-line edits, never silent field replacement.
+6. **Re-export from `index.ts`.**
+7. **Tests.** Length / sequential / verification-anchor / no-encoding-drift / integrity invariants.
+8. **Renderer.** Add sections gated on field presence so legacy entries (or entries without the new field) render unchanged.
+9. **Update this doc** in the same commit.
+
+## License + source citation
+
+Every text field in the data layer has unambiguous public domain status:
+
+- **Ancient Chinese texts** (Zhou Yi root judgments, all Ten Wings) — composed before 200 BCE, transmitted with the Yijing for over 2,000 years. Public domain worldwide under any copyright regime.
+- **James Legge translation** — Legge died 1897; SBE Vol XVI published 1882. Public domain by ~144 years past any copyright term in any jurisdiction.
+- **Project-authored content** — `w` paraphrases, `en`/`te`/`yaoEn` modern English, `TRIGRAM_ASSOC_GLOSS_EN` glosses. Owned by this project, MIT-licensed (or whatever the repo's license is).
+
+Sources cited per module's `*_META` block. The `data-acquisition/` workspace (gitignored) preserves the verification trail — raw pulls, parse scripts, intermediate JSONs, complementary-mapping report. Re-running a pull workflow regenerates everything reproducibly.
diff --git a/docs/plans/2026-05-30-001-feat-data-enrichment-plan.md b/docs/plans/2026-05-30-001-feat-data-enrichment-plan.md
new file mode 100644
index 0000000..ddb18d5
--- /dev/null
+++ b/docs/plans/2026-05-30-001-feat-data-enrichment-plan.md
@@ -0,0 +1,416 @@
+---
+title: Data Enrichment — Canonical Wings + Legge
+type: feat
+status: active
+date: 2026-05-30
+origin: data-acquisition/complementary-mapping.md
+---
+
+# Data Enrichment — Canonical Wings + Legge
+
+Second-wave canonical-text addition to the I Ching app data layer. Adds five canonical Chinese text layers (卦辭, 小象傳, 說卦傳, 序卦傳, 雜卦傳) and one English translation lineage (James Legge, SBE vol. XVI, 1882), all public domain. Extends the `Hexagram` and `TrigramInfo` types with optional fields, adds a text-bearing relations overlay (`connections`) on top of the existing pure-numeric derivations, and expands the detail renderer to surface the new layers.
+
+## Architecture Decision
+
+**Approach:** *Pure derivations + connections overlay + flat optional Hexagram fields.*
+
+1. **Existing `derivation/*.ts` modules stay pure** — signature `(lines: Line[]) => number`. No mutation, no I/O, no text bundling. They remain the structural / numeric layer.
+2. **New `derivation/connections.ts` overlay** — signature `(cast: Cast) => CastConnections`. Takes a computed `Cast` and produces a text-bearing overlay carrying `xuGua` (sequence narrative), `zaGuaPair` (contrast pair with text), and `shuoguaCitations` (chapter references per derivation type). This is *not* a derivation in the existing sense — it's a join between derived KW numbers and canonical text data.
+3. **All new `Hexagram` fields are flat and optional** — `gc?`, `gcEn?`, `yaoXiao?[6]`, `yaoXiaoEn?[6]`, `legge?: LeggeHexagram`. Matches the existing flat 11-field shape in `packages/core/src/types.ts:11-25`; preserves backward compatibility with every existing consumer (no required-field churn).
+4. **`TrigramInfo` extended with `assoc?: TrigramAssoc`** — the structured 說卦 catalogue lives next to its existing carrier in `packages/core/src/data/trigrams.ts`, populated from `data/shuogua.ts#TRIGRAM_ASSOC`. Canonical zh stays in `shuogua.ts`; project-authored English glosses live in `trigrams.ts` (clearly labeled non-canonical).
+5. **Stacked-voice rendering is voice-driven, content-gated** — each text node carries `{ zh, modernEn?, wilhelmEn?, leggeEn? }`; the renderer iterates voices and skips rows with no content. No special-cased branching per text type. Wings naturally render zh + Legge only (no Wilhelm voice exists for Wings); cast text renders all three when populated.
+
+**Rationale:** Decided by the **Consistency** criterion. The existing repo pattern is: pure-function derivations (`derivation/*.ts:6` all share `(lines: Line[]) => number`), flat `Hexagram` interface (`types.ts:11-25` — zero nesting), named-const data modules (`data/gua.ts:4`, `data/trigrams.ts:3`), all-required fields with optional add-ons via `?:` (precedent: `DailyCache.intention?` at `types.ts:84`). This approach extends each pattern in its own direction without breaking any of them. The "fold 序卦/雜卦 into a unified `relations.ts`" reframe is implemented at the *render* layer (UI groups numeric derivations + text-bearing connections under one "relations" block) — not at the data layer, which keeps separation of concerns.
+
+**Trade-offs accepted:**
+- Two distinct data shapes in the relations block at render time (numeric derivation badges + text-bearing connection rows). Renderer handles the visual unification.
+- New `Style` union grows (`gc`, `yaoXiao`) — touches every hardcoded `STYLES` / `VALID_STYLES` list in lockstep (3 sites). Mitigated by U7 batching all updates in one commit.
+- Legge ships *after* a dedicated cleanup re-pull. The integration unit (U10) depends on the cleanup workflow (U9) completing first.
+
+## High-Level Technical Design
+
+### Composition Matrix — Hexagram model shape change
+
+Hexagram changes from a single 5-field commentary model to a composed canonical-text model. Surfaces that observe Hexagram must handle every combination.
+
+**Old scalar assumption:** "the commentary fields are `dx/tu/en/te/w`." Lives in: `commands/hexagram.ts:7` (`VALID_STYLES`), `data/trigrams.ts:14-15` (`STYLES`/`QUOTE_STYLES`), `format/reading.ts:31` (`g[style]` dynamic access), `output/json.ts:65-70` (enumeration), `output/plain.ts:64-68` (5-line emission), `scenes/dict/detail-renderer.ts:78-93` (sections array of 5 entries).
+
+**New composed model members:**
+
+| Member | Carrier | Provenance | Optional? | Languages |
+|---|---|---|---|---|
+| `dx`, `tu` | `Hexagram` | canonical zh — existing | required (legacy) | zh only |
+| `en`, `te` | `Hexagram` | anonymous modern English — existing | required (legacy) | en only |
+| `w` | `Hexagram` | Wilhelm-flavored synthesis — existing | required (legacy) | en only |
+| `yao`, `yaoEn` | `Hexagram` | canonical zh + modern en — existing | required (legacy) | zh + en |
+| **`gc`, `gcEn`** | `Hexagram` (NEW) | canonical zh 卦辭 + Legge en | optional | zh + en |
+| **`yaoXiao`, `yaoXiaoEn`** | `Hexagram` (NEW) | canonical zh 小象傳 + Legge en | optional | zh + en |
+| **`legge`** | `Hexagram.legge?` | Legge 1882, post-cleanup only | optional | en only |
+| **`assoc`** | `TrigramInfo.assoc?` | canonical zh 說卦 + project-authored en gloss | optional | zh + en (gloss) |
+| **connections** | `CastConnections` overlay (NOT Hexagram) | join over XU_GUA, ZA_GUA, SHUOGUA | always-built but rows may be empty | zh + en (where Legge ships) |
+
+**Priority lattice (when a surface must pick ONE):**
+1. zh canonical (always present once shipped).
+2. Legge en (when shipped post-cleanup).
+3. Wilhelm-flavored en (`w`, existing).
+4. Modern anonymous en (`en`/`te`/`yaoEn`).
+
+The stacked-voice renderer does NOT pick — it iterates all populated voices in this order. Only single-voice surfaces (CLI `--style` flag) pick.
+
+**Ownership boundary:**
+- `packages/core/src/data/*.ts` — owns canonical text + structured catalogues.
+- `packages/core/src/derivation/connections.ts` — owns the overlay join (Cast → CastConnections).
+- `packages/core/src/detail.ts` — owns aggregation (`HexagramDetail` carries Hexagram + derivations + connections).
+- `packages/terminal/src/scenes/dict/detail-renderer.ts` — owns visual composition / stacking.
+- `apps/cli/src/output/{json,plain}.ts` — owns serialization parity.
+
+**Composition test matrix (named tests; lock in U6 and U11):**
+
+| Mixed case | Expected visible contract | Test name |
+|---|---|---|
+| Hexagram with no new fields populated (current state) | output identical to today's; no empty sections rendered | `detail-renderer renders legacy 5-field hexagram unchanged` |
+| Hexagram with gc, yaoXiao populated but no legge | new canonical sections appear; voice stack shows zh + (modern/Wilhelm) only | `detail-renderer renders new zh canon without legge` |
+| Hexagram with everything (incl. legge) | three-voice stack on Judgment, Image, every changing line | `detail-renderer renders full three-voice stack` |
+| Cast where 雜卦 pair degenerates via polarity (hex 1, 27, 29, 61) | zaGuaPair row shows polarity-fallback partner; xuGua row shows previous in King Wen | `connections handles polarity-fallback hexagrams` |
+| 雜卦 entry from the disordered final 8 | row renders the canonical disordered pairing; no orbit-integrity warning surfaced to user | `connections renders disordered-tail entries faithfully` |
+| CLI `--style gc` for hexagram lacking gc population | typed error / fallback to existing field, NOT undefined access | `cli hexagram --style gc errors cleanly when absent` |
+
+### Layer diagram (directional)
+
+```
+              ┌──────────────────────────────────────────┐
+              │ packages/terminal/src/scenes/dict        │
+              │   detail-renderer.ts (sections stack)    │  ← U6
+              │   detail-model.ts (links + connections)  │
+              └────────────────┬─────────────────────────┘
+                               │ reads
+              ┌────────────────▼─────────────────────────┐
+              │ packages/core/src                        │
+              │   detail.ts  (HexagramDetail aggregator) │  ← U5
+              │     ├── nuclear / polarity / mirror /     │
+              │     │   diagonal / locked-pairs (PURE)   │  unchanged
+              │     └── connections.ts (overlay)         │  ← U5 new
+              └────────────────┬─────────────────────────┘
+                               │ joins
+        ┌──────────────────────┼──────────────────────────────┐
+        ▼                      ▼                              ▼
+ ┌──────────────┐    ┌────────────────────┐         ┌─────────────────┐
+ │ data/gua.ts  │    │ data/xugua.ts      │  ← U2   │ data/shuogua.ts │  ← U3
+ │   GUA        │    │ data/zagua.ts      │  ← U2   │   SHUOGUA        │
+ │   + gc?      │    │   XU_GUA           │         │   TRIGRAM_ASSOC  │
+ │   + gcEn?    │    │   ZA_GUA           │         └─────────────────┘
+ │   + yaoXiao? │    │   ZA_GUA_BY_HEX    │
+ │   + legge?   │    └────────────────────┘
+ └──────────────┘                                   ┌─────────────────┐
+                                                    │ data/legge.ts   │  ← U10
+                                                    │   LEGGE          │
+                                                    │   LEGGE_*_EN     │
+                                                    └─────────────────┘
+```
+
+## Implementation Units
+
+### U1. Type extensions — types.ts
+
+- **Goal:** Land all new TypeScript types as optional extensions. Compiles green; no field populated yet.
+- **Requirements:** Foundation for every subsequent unit.
+- **Dependencies:** None.
+- **Files:**
+  - Modify: `packages/core/src/types.ts`
+  - Test: `packages/core/src/__tests__/types.compile.test.ts` (new, type-only test)
+- **Approach:** Add to `Hexagram` (lines 11-25 region): `gc?`, `gcEn?`, `yaoXiao?: string[]`, `yaoXiaoEn?: string[]`, `legge?: LeggeHexagram`. Add new interfaces `LeggeHexagram`, `TrigramAssoc`, `XuGuaEntry`, `ZaGuaEntry`, `ShuoguaChapter`, `ShuoguaCitation`, `CastConnections`. Extend `TrigramInfo` (line 65) with `assoc?: TrigramAssoc`. Extend `Style` union to `"dx" | "tu" | "en" | "te" | "w" | "st" | "gc" | "yaoXiao"`; update `QuoteStyle` derivation. Keep everything flat (no nested fields on Hexagram).
+- **Patterns to follow:** `types.ts:84` (`DailyCache.intention?`) — optional-field convention; `types.ts:65-69` (`TrigramInfo`) — interface shape.
+- **Test scenarios:**
+  - *Happy path:* a Hexagram literal with no new fields type-checks against the new interface.
+  - *Edge case:* a Hexagram literal that populates every new optional field type-checks.
+  - *Negative:* a Hexagram literal missing `dx` still fails compilation (proves the legacy required fields stay required).
+- **Verification:** `bun run typecheck` passes; all existing 64 entries in `gua.ts` still type-check unchanged.
+
+### U2. 序卦 + 雜卦 data modules
+
+- **Goal:** Promote the verified `data-acquisition/xugua-zagua.json` (3/3 verdicts) into permanent data modules.
+- **Requirements:** Source data for the connections overlay (U5).
+- **Dependencies:** U1.
+- **Files:**
+  - Create: `packages/core/src/data/xugua.ts`
+  - Create: `packages/core/src/data/zagua.ts`
+  - Modify: `packages/core/src/index.ts` (re-export the new constants)
+  - Test: `packages/core/src/__tests__/xugua-zagua.test.ts`
+- **Approach:** Read `data-acquisition/xugua-zagua.json` and transcribe verbatim into:
+  - `xugua.ts`: `export const XU_GUA: XuGuaEntry[]` (64 entries; preserve the editorial notes on 乾/坤 shared preamble, 離 merge, 咸 lower-jing preamble that are documented in the JSON's `_meta`).
+  - `zagua.ts`: `export const ZA_GUA: ZaGuaEntry[]` (53 entries) + `export const ZA_GUA_BY_HEX: Record<number, ZaGuaEntry>` (reverse index — many-to-one because the disordered tail collapses several hexagrams into single entries).
+  - Both modules also export the `_meta` block as a sibling const so source attribution lives next to the data.
+- **Patterns to follow:** `data/gua.ts:4` (named const array shape); `data/trigrams.ts:3` (multiple exports per data file).
+- **Test scenarios:**
+  - *Happy path:* `XU_GUA.length === 64`; every entry has a non-empty `text`.
+  - *Coverage:* all 64 hex numbers appear in some `ZA_GUA[*].pair` array (set-equality with `range(1,65)`).
+  - *Disordered tail preserved:* the entries the JSON `_meta.notes` flags as disordered are present in source order — assert specific indices match the JSON.
+  - *Editorial notes carried:* the `note` field on XU_GUA entries for hex 1, 2, 30, 31 matches the JSON.
+- **Verification:** `ZA_GUA_BY_HEX[3].pair` resolves to a 2-element array containing 3 and 4 (屯/蒙 pair, the canonical first ordered pair).
+
+### U3. 說卦 data module
+
+- **Goal:** Promote the verified `data-acquisition/shuogua.json` (3/3 verdicts) into a permanent data module.
+- **Requirements:** Source for trigram catalogue (U4) and derivation citations (U5).
+- **Dependencies:** U1.
+- **Files:**
+  - Create: `packages/core/src/data/shuogua.ts`
+  - Modify: `packages/core/src/index.ts`
+  - Test: `packages/core/src/__tests__/shuogua.test.ts`
+- **Approach:** Transcribe `shuogua.json`'s `chapters[]` (11 entries) and `trigramAssociations` (8-trigram keyed map) into:
+  - `export const SHUOGUA: { chapters: ShuoguaChapter[] }` — canonical zh, verbatim.
+  - `export const TRIGRAM_ASSOC: Record<string, TrigramAssoc>` — keyed by trigram zh name (乾/坤/震/巽/坎/離/艮/兌), structured fields as canonical, plus a `note?` field on the editorial sub-fields (season, cosmologicalRole, other) explicitly typed as derived rather than canonical to honor the verifier warn.
+- **Patterns to follow:** `data/large-glyphs.ts:9-19` (typed Record with explicit nested shape).
+- **Test scenarios:**
+  - *Happy path:* `SHUOGUA.chapters.length === 11`; every chapter has non-empty text.
+  - *Coverage:* `Object.keys(TRIGRAM_ASSOC).length === 8`; each entry has `image`, `family`, `body`, `animal`, `direction`, `attribute`, `extendedImages`.
+  - *Canon vs editorial:* `TRIGRAM_ASSOC.qian.image` is zh single char (`'天'`); `season` and `cosmologicalRole` are flagged in the type as project-derived not canonical.
+  - *Verification anchor:* chapter 11 text contains the animal-association line; chapter 5 contains the directional cycle.
+- **Verification:** `TRIGRAM_ASSOC['乾'].extendedImages` has 14 entries (the 說卦 ch. 11 catalogue for 乾).
+
+### U4. TrigramInfo enrichment + editorial English glosses
+
+- **Goal:** Wire `TRIGRAM_ASSOC` into each `TrigramInfo` so consumers can read trigram catalogue without reaching into `shuogua.ts`. Add project-authored English glosses for the structured fields.
+- **Requirements:** Trigram catalogue surfacing in detail renderer (U6).
+- **Dependencies:** U3.
+- **Files:**
+  - Modify: `packages/core/src/data/trigrams.ts`
+  - Test: `packages/core/src/__tests__/trigrams.test.ts` (new)
+- **Approach:** In `trigrams.ts:3-12`, populate each of the 8 `TrigramInfo` entries with `assoc` referencing the corresponding `TRIGRAM_ASSOC[zhName]`. Add a sibling export `TRIGRAM_ASSOC_EN: Record<string, Partial<TrigramAssoc>>` carrying short project-authored English glosses for `family` ("father"/"mother"/...), `body` ("head"/"belly"/...), `animal` ("horse"/"ox"/...), `direction` ("northwest"/"southwest"/...), and `attribute` ("strength"/"yielding"/...). Document at top of file: "TRIGRAM_ASSOC_EN is project-authored — not from Legge or any canonical source. Labeled non-canonical in UI."
+- **Patterns to follow:** `data/trigrams.ts:17-23` (existing `DERIVED_LABELS` Record convention).
+- **Test scenarios:**
+  - *Happy path:* `TRIGRAMS[7].assoc?.extendedImages` (乾 entry) has 14 items.
+  - *Edge case:* `TRIGRAM_ASSOC_EN` has all 8 keys; every entry has non-empty `family`, `body`, `animal`, `direction`, `attribute` strings.
+  - *Negative:* `TRIGRAM_ASSOC_EN` does NOT have an `extendedImages` field (those stay zh-only — too many for short glosses).
+- **Verification:** Reading `TRIGRAMS[7]` returns the full canonical 乾 catalogue (zh) plus a side-loadable English gloss map.
+
+### U5. connections.ts overlay + HexagramDetail aggregation
+
+- **Goal:** Add the `connections(cast: Cast): CastConnections` overlay that joins derived KW numbers with canonical text data. Aggregate it into `HexagramDetail`.
+- **Requirements:** Source for the relations block in the renderer (U6).
+- **Dependencies:** U2, U3.
+- **Files:**
+  - Create: `packages/core/src/derivation/connections.ts`
+  - Modify: `packages/core/src/detail.ts`
+  - Modify: `packages/core/src/index.ts`
+  - Test: `packages/core/src/__tests__/connections.test.ts` (new)
+- **Approach:** `connections(cast)` returns `CastConnections { xuGua, zaGuaPair, shuoguaCitations }`. `xuGua` is `XU_GUA[cast.primary - 1]`. `zaGuaPair` is `ZA_GUA_BY_HEX[cast.primary]` (which is the entry containing the pair partner; many-to-one for the disordered tail is fine — typed accordingly). `shuoguaCitations` is a static `DERIVATION_CITATIONS` map (`{ nuclear: 3, polarity: 2, mirror: 6, diagonal: 6, becoming: 7 }`) wrapped per cast. Pure function; no I/O. Modify `detail.ts:37-40` aggregator to also call `connections(cast)` and embed the result in `HexagramDetail`.
+- **Patterns to follow:** `derivation/nuclear.ts:6` (pure function signature); `detail.ts:37-40` (aggregation pattern).
+- **Test scenarios:**
+  - *Happy path:* `connections({ primary: 3 })` returns `xuGua` for hex 3 屯 with the canonical "盈天地之間者…" text; `zaGuaPair` includes hex 4 蒙.
+  - *Edge — first hex:* `connections({ primary: 1 })`: `xuGua` for hex 1 returns the editorial note about shared cosmological preamble (no "previous" hex exists); test does not crash.
+  - *Edge — polarity-fallback hex:* `connections({ primary: 29 })`: `zaGuaPair` resolves to hex 30 (離, via the disordered tail or canonical entry); pair returned is the polarity-fallback partner.
+  - *Edge — disordered tail hex:* `connections({ primary: 60 })`: `zaGuaPair` returns the canonical disordered entry; no warning surfaced (silent preservation).
+  - *Cross-check (adversarial):* for every hex 1..64, compute mirror-or-polarity geometrically; assert the `zaGuaPair.pair` array contains the geometrically-derived partner for all *non-tail* entries. The famously disordered tail is whitelisted by index — disagreement on whitelisted indices is expected; disagreement elsewhere is a regression. Lock invariant: `iff hex ∉ DISORDERED_TAIL: geometricPair(hex) ∈ zaGuaPair(hex).pair`.
+- **Verification:** All 64 hexagrams produce a `CastConnections` that loads non-empty `xuGua.text` and a populated `zaGuaPair`; the orbit-integrity invariant holds for the 56 non-tail hexagrams.
+
+### U6. Detail-renderer sections expansion + stacked-voice rendering scaffolding
+
+- **Goal:** Extend the dict detail renderer's sections array to surface the new canonical layers. Build the stacked-voice scaffolding (renders zh + each populated en voice in order), but only with currently-shipping voices (modern + wilhelm). Legge slot is wired but empty until U10.
+- **Requirements:** Q1 (stack), Q3 (terse 說卦 citation), Q4 (extendedImages collapsed in cast).
+- **Dependencies:** U2, U3, U4, U5.
+- **Files:**
+  - Modify: `packages/terminal/src/scenes/dict/detail-renderer.ts`
+  - Modify: `packages/terminal/src/scenes/dict/detail-model.ts`
+  - Test: `packages/terminal/src/scenes/dict/__tests__/detail-renderer.test.ts` (extend; create if absent)
+- **Approach:**
+  - Expand `buildContentLines` sections (current at lines 78-93). New sections: 卦辭 (top of cast, when populated), 大象傳 (existing), 彖傳 (existing), 序卦 (inline), 雜卦 (collapsed-by-default expander; render the pair partner glyph + name + text), 說卦 trigram catalogue (under upper/lower trigram display: family/body/animal/direction/attribute zh + project-en gloss; extendedImages compact: first 3 + "▸ +N more" expander).
+  - Add a `renderStackedVoices(node: VoiceNode)` helper that takes `{ zh, modernEn?, wilhelmEn?, leggeEn? }` and emits rows for each populated voice in priority order. Used by Judgment, Image, and per-changing-line yao readings.
+  - Update relations block (after derivations) to surface 序卦 + 雜卦 rows alongside the existing nuclear/polarity/mirror/diagonal badges, each annotated with the 說卦 citation chapter where applicable.
+  - All new sections gated on field presence (`if (gua.gc) { … }` etc.) so Hexagram entries without new fields render unchanged from today.
+- **Patterns to follow:** `scenes/dict/detail-renderer.ts:78-93` (sections array shape); `scenes/dict/detail-renderer.ts:125-134` (derived links block).
+- **Test scenarios:**
+  - *Happy path — legacy hexagram (no new fields):* rendered output is byte-identical to today's output. Lock with a snapshot or line-by-line comparison.
+  - *Happy path — fully-populated hexagram:* output contains 卦辭 section, 序卦 line, 雜卦 expander, 說卦 trigram catalogue under each trigram. Lock with named-section assertions.
+  - *Edge — extendedImages compact:* 乾 trigram displays first 3 images + "▸ +11 more" indicator; 坎 displays first 3 + "▸ +N".
+  - *Edge — relations row for hex 29 坎:* 雜卦 row shows pair partner 離 (polarity fallback); no error.
+  - *Edge — voice stack with no Legge:* `renderStackedVoices({ zh, modernEn, wilhelmEn })` emits 3 rows; no empty "legge:" row.
+  - *Error — disordered tail hex:* renders the canonical disordered entry; no user-visible warning.
+- **Verification:** Hex 1 (乾), hex 3 (屯), hex 29 (坎) all render the new sections coherently; existing hex 50 (鼎) with no new fields populated yet still renders the legacy 5-section view.
+
+### U7. Style union + CLI hardcoded list updates (lockstep)
+
+- **Goal:** Bring every hardcoded `STYLES` / `VALID_STYLES` / enumeration site into agreement with the new Style union. Single atomic commit.
+- **Requirements:** CLI `--style gc` works once data ships; JSON output schema is complete.
+- **Dependencies:** U1.
+- **Files:**
+  - Modify: `packages/core/src/data/trigrams.ts` (STYLES, QUOTE_STYLES at lines 14-15)
+  - Modify: `apps/cli/src/commands/hexagram.ts` (VALID_STYLES at line 7)
+  - Modify: `apps/cli/src/output/json.ts` (enumeration at lines 45-50, 65-70)
+  - Modify: `apps/cli/src/output/plain.ts` (5-line emission at lines 64-68)
+  - Test: `apps/cli/src/__tests__/style-union-parity.test.ts` (new)
+- **Approach:** Add `"gc"` and `"yaoXiao"` to every list in lockstep. `hexagramToJson` emits every populated optional field (skip undefined keys). `formatHexagramPlain` adds a 卦辭 line when `gc` is populated. Style-union parity test asserts `STYLES`, `QUOTE_STYLES`, `VALID_STYLES`, and the JSON-output enumeration are identical (modulo `"st"` exclusion).
+- **Patterns to follow:** `apps/cli/src/output/plain.ts:64-68` (existing per-style emission); `apps/cli/src/commands/hexagram.ts:7` (`VALID_STYLES` declaration).
+- **Test scenarios:**
+  - *Happy path:* `STYLES`, `QUOTE_STYLES`, `VALID_STYLES`, and the JSON emission keys are all in agreement (parity test).
+  - *Edge — undefined optional:* `hexagramToJson` for a hex with no `gc` populated does not emit a `gc: undefined` field; the key is absent.
+  - *Error — invalid style:* `iching hexagram 1 --style unknown` exits with the existing typed error; the error message lists all valid styles including new ones.
+- **Verification:** `iching hexagram 1 --style gc` errors cleanly (data not yet populated for hex 1), then succeeds after U8 lands.
+
+### U8. 卦辭 + 小象傳 acquisition workflow + data backfill into gua.ts
+
+- **Goal:** Pull the queued first-wave canonical Chinese (卦辭 root oracle + 小象傳 per-line commentary) from ctext.org primary + zh.wikisource cross-check, verify adversarially, and backfill into the `GUA` array's new optional fields. Bilingual: zh from canon, en from Legge (post-cleanup); for this unit, populate zh only and leave en for U10's backfill pass.
+- **Requirements:** Foundational gap-filler; surfaces both fields in U6's renderer.
+- **Dependencies:** U1, U2 (uses same workflow pattern). Can run in parallel with U3-U7.
+- **Files:**
+  - Create: `data-acquisition/guaci-xiaoxiang.json` (verified pull artifact, gitignored or committed-as-fixture per workspace decision)
+  - Modify: `packages/core/src/data/gua.ts` (populate `gc` on all 64; populate `yaoXiao[6]` on all 64)
+  - Test: `packages/core/src/__tests__/guaci-xiaoxiang.test.ts` (new)
+- **Approach:** Mirror the `iching-pull-verify-synthesize` workflow used this session for the second-wave corpora. Pull agent fetches ctext.org's per-hexagram pages, extracts the 卦辭 (the line beginning with `《卦名》：` or the prose immediately after) and the 6 小象傳 entries (the `象曰` lines per yao). Adversarial verifiers run completeness (64 / 384 counts) + source-fidelity (spot-check vs zh.wikisource) + structural cleanliness lenses. Verification anchors: hex 1 卦辭 should be `元亨，利貞`; hex 1 line 1 小象 should begin with `潛龍勿用，陽在下也`. Backfill agent reads the verified JSON and rewrites `gua.ts` in place, inserting `gc` and `yaoXiao` into every entry while preserving every existing field and the file's authored comment header.
+- **Patterns to follow:** `data-acquisition/xugua-zagua.json` schema (this session's pull). `data/gua.ts:4` (existing array shape — backfill must preserve it).
+- **Test scenarios:**
+  - *Happy path:* `GUA[0].gc === "元亨，利貞"`; `GUA[0].yaoXiao[0]` is the canonical 小象 for line 1 of 乾.
+  - *Coverage:* every `GUA[i].gc` is non-empty; every `GUA[i].yaoXiao` has 6 entries.
+  - *Existing fields untouched:* every existing `dx`/`tu`/`en`/`te`/`w`/`yao`/`yaoEn` field is identical to pre-backfill (diff-based assertion against a git blob hash, or against a frozen-fixture copy).
+  - *Disconfirming evidence:* if the canonical 卦辭 source disagrees on any hex's text between ctext.org and zh.wikisource by more than a documented variant, the unit fails and the textual variant is recorded.
+- **Verification:** All 64 entries have populated `gc` and `yaoXiao`; no existing field changed.
+
+### U9. Legge cleanup re-pull workflow
+
+- **Goal:** Re-pull Legge from public-domain sources that don't carry the Morales/baharna editorial drift, producing a clean `data-acquisition/legge-cleaned.json` that passes verification.
+- **Requirements:** Pre-req for shipping the Legge translation lineage.
+- **Dependencies:** None (operates on raw sources, not the existing `data-acquisition/legge.json` blocker).
+- **Files:**
+  - Create: `data-acquisition/legge-cleaned.json` (verified pull artifact)
+- **Approach:** Multi-source workflow. Primary: pull from archive.org's `sacredbooksofchi16conf_djvu.txt` OCR (raw Legge, no Morales edits). Secondary: Wikisource's Sacred-Books-of-the-East Vol. XVI Legge pages. Tertiary: sacred-texts.com `ic*.htm` (needs browser-like User-Agent). For each blocker documented in this session's pull:
+  1. **NINE/SIX substitution** in line statements: replace with Legge's canonical line-prefix language ("the first/second/third/fourth/fifth/sixth line, undivided" or "...divided"). Wikisource / archive.org plaintext are authoritative.
+  2. **Missing 7th paragraph for hex 1 & 2** ("use of the number nine" / "use of the number six"): restore from Wikisource. Type `lines[]` as `string[]`, not `[string, string, string, string, string, string]` (variance accepted for hex 1 & 2).
+  3. **Final 雜卦 nav chrome:** strip with regex against known site-chrome strings.
+  4. **14 序卦 entries with fused footnote digits** (`Kun1`, `multitudes3`, `Li4`): regex-strip trailing digits where they follow capitalized roman text.
+  Run independent verifiers per blocker class: each verifier asserts the specific blocker is gone, and a final completeness verifier asserts 64 hexagrams + Wings coverage matches the existing baharna pull's structural counts.
+- **Patterns to follow:** This session's `iching-pull-verify-synthesize` workflow.
+- **Test scenarios:**
+  - *Blocker resolution:* a regex scan over `legge-cleaned.json.hexagrams[*].lines[*]` produces zero matches for `\b(NINE|SIX)\b` in positions where Legge's transmitted text uses "line".
+  - *Hex 1 & 2 completeness:* `legge-cleaned.json.hexagrams[0].lines.length === 7` and `[1].lines.length === 7`.
+  - *Nav chrome cleanup:* the final 雜卦 entry text does not contain `"Previous"`, `"Return to"`, or `"Baharna"`.
+  - *Footnote cleanup:* no entry in `legge-cleaned.json.wings.xuGua[*].text` matches `[A-Z][a-z]+\d\b`.
+  - *Canonical anchor:* hex 1 judgment equals "Khien (represents) what is great and originating, penetrating, advantageous, correct and firm." (the verified canonical phrasing) — match exactly.
+- **Verification:** All four documented blockers are absent; 64 hexagrams + 3 Wings remain structurally complete; the workflow's verifiers all pass.
+
+### U10. Legge data module + Stacked-voice rendering activation
+
+- **Goal:** Promote `legge-cleaned.json` into a permanent data module; activate the third voice in the renderer's stacked-voice scaffolding (built in U6).
+- **Requirements:** Q1 (stacked translation voices), Wings English availability.
+- **Dependencies:** U6, U9.
+- **Files:**
+  - Create: `packages/core/src/data/legge.ts`
+  - Modify: `packages/core/src/data/gua.ts` (populate `legge` on each entry from the cleaned data)
+  - Modify: `packages/terminal/src/scenes/dict/detail-renderer.ts` (light edits — wire the leggeEn voice through `renderStackedVoices`)
+  - Modify: `packages/core/src/data/xugua.ts`, `data/zagua.ts`, `data/shuogua.ts` (add `textEn?` field populated from Legge's appendices)
+  - Test: `packages/core/src/__tests__/legge.test.ts` (new); extend `detail-renderer.test.ts`
+- **Approach:** `legge.ts` exports `LEGGE: Record<number, LeggeHexagram>` keyed by KW + `LEGGE_XUGUA_EN: Record<number, string>` + `LEGGE_ZAGUA_EN: string[]` + `LEGGE_SHUOGUA_EN: Record<number, string>`. Backfill `GUA[i].legge` references the corresponding `LEGGE[i+1]` entry. Backfill `XU_GUA[i].textEn` from `LEGGE_XUGUA_EN[i+1]`. For `ZA_GUA`, fall back to a `[zh-only]` badge for the 2 documented gap hexagrams (39 & 49) where Legge has no pair tag — per Q5 decision: fall back rather than omit. Activate the Legge row in `renderStackedVoices` (already wired in U6, just adds non-empty content).
+- **Patterns to follow:** `data/gua.ts:4` (backfill respects the file's authored shape); `data/trigrams.ts:14-15` (multiple top-level exports per data file).
+- **Test scenarios:**
+  - *Happy path:* `GUA[0].legge?.judgment` equals the canonical Khien judgment string.
+  - *Wings English:* `XU_GUA[0].textEn` is populated; `SHUOGUA.chapters[10].textEn` (chapter 11) is populated.
+  - *Edge — 雜卦 gap:* `ZA_GUA[*]` entries for hex 39 / 49 have no `textEn`; renderer surfaces a `[zh only]` badge instead of crashing.
+  - *Composition — three-voice stack:* hex 1 Judgment renders three rows: modern, Wilhelm-flavored, Legge. Test asserts all three are present in renderer output.
+  - *Composition — partial stack (Wings):* 序卦 hex 3 entry renders zh + Legge only (no Wilhelm voice for Wings exists). Test asserts the Wilhelm row is absent, not blank.
+- **Verification:** `iching hexagram 1` plain output now includes Legge judgment; terminal detail scene shows three stacked voices on hex 1's Judgment.
+
+### U11. Orbit-integrity test + data-layers documentation
+
+- **Goal:** Land the satisfying invariant test from the architectural discussion (geometric pair check vs canonical 雜卦) and document the new data-layer ecology so future contributors understand the canonical/editorial split.
+- **Requirements:** Closure on the model-shape change; documentation parity with `docs/vision/` style.
+- **Dependencies:** U2, U5.
+- **Files:**
+  - Create: `packages/core/src/__tests__/orbit-integrity.test.ts`
+  - Create: `docs/data-layers.md`
+- **Approach:** The test enumerates all 64 hexagrams; for each non-tail hex, computes `mirror(h) !== h ? mirror(h) : polarity(h)` and asserts that result appears in the corresponding `ZA_GUA_BY_HEX[h].pair` array. The disordered tail (whitelisted by a `DISORDERED_TAIL_HEXAGRAMS` set sourced from the JSON's `_meta.notes`) is excluded. The doc `data-layers.md` covers: (a) the canonical vs editorial split (canonical text is verbatim from ctext/wikisource/Legge; editorial = TRIGRAM_ASSOC_EN glosses, structured-field synthesis, project-authored modern English); (b) the file-per-corpus convention; (c) the optional-field discipline on Hexagram; (d) how stacked-voice rendering composes; (e) the orbit-integrity invariant as the canonical sanity check for the Wings.
+- **Patterns to follow:** `docs/vision/entropy-sources-vision.md` (vision-doc style); `packages/core/src/__tests__/exhaustive-4096.test.ts:11-84` (exhaustive-iteration test pattern).
+- **Test scenarios:**
+  - *Happy path:* every non-tail hex 1..64 passes the orbit-integrity check.
+  - *Edge — degenerate-mirror hexagrams:* hex 1, 27, 29, 61 (and their polarity partners) pass via the polarity-fallback branch.
+  - *Edge — disordered tail:* the whitelisted tail hexagrams are excluded by the test and do not produce failures.
+  - *Disconfirming evidence:* if the orbit-integrity invariant fails for a hex *outside* the whitelist, the test fails and identifies the hex — this is the pull-correctness probe.
+- **Verification:** The orbit invariant is now a permanent CI signal — silent corruption of the 雜卦 pulled data will fail this test.
+
+## Scope Boundaries
+
+- **Excluded from this plan:** 文言傳 (Wenyan, the appendix dedicated only to hex 1 & 2). The dictionary page placement was discussed but is asymmetric (only renders for 2 of 64 hexagrams) and adds load-bearing rendering branches; route to a separate follow-up after this wave lands.
+- **Excluded:** 繫辭傳 (Great Treatise). Not per-hexagram; belongs in a separate library/about surface, not the cast or detail views.
+- **Excluded:** Bone-method oracle (turtle-shell verdicts 大吉/吉/凶/大凶). Discussed earlier as a separate oracle type; needs its own architecture, not data enrichment.
+- **Excluded:** Wilhelm/Baynes content. Copyrighted; cannot ship in an open-source repo. The existing `w` field stays as project-authored synthesis; the cleanup of the 19 fields with verbatim Wilhelm strings is a separate cleanup workstream tracked in this session's earlier scan.
+- **Excluded:** UI for the "translation-voice toggle" (Q1 was decided as stacked-voice, not toggle). No tab/cycle interaction control is built.
+- **Excluded:** Tag-cloud rendering of `extendedImages` (Q4 variant C). Compact-with-expander is decided.
+
+### Deferred to Follow-Up Work
+
+- **文言傳 integration** for the hex 1 & 2 dictionary pages: separate plan, after this wave stabilizes. Will reuse the optional-field pattern: `Hexagram.wenyan?: WenyanCommentary`.
+- **`gua.ts` voice cleanup**: the 19 `w` fields with verbatim Wilhelm strings (identified in this session's scan) need rewriting into clean paraphrases. Separate concern from data enrichment; tracked separately.
+- **Library / about surface** for non-per-hexagram texts (繫辭, full 說卦 reader, full 序卦/雜卦 continuous text). Separate UI scope.
+- **Per-translation citation linking**: clicking a Legge row could open `docs/sources/legge-sbe-xvi.md` showing the provenance chain. Useful but not blocking.
+
+## System-Wide Impact
+
+- **Interaction graph:** new optional fields flow through `format/reading.ts:31` dynamic access (safe — optional values render or skip), `output/json.ts:65-70` enumerated emission (must be updated in lockstep — U7), `output/plain.ts:64-68` per-style line emission (must be updated in lockstep — U7), `scenes/dict/detail-renderer.ts:78-93` hardcoded section array (must be extended — U6).
+- **Error propagation:** all new fields are optional. Consumers that access `gua.gc` get `undefined` until U8 backfills — every consumer must handle `undefined` defensively (`if (gua.gc) { … }` gating). Type system enforces this via `?:`.
+- **State lifecycle risks:** none — this is read-only data addition. No persistence, no migration, no cache invalidation.
+- **API surface parity:** `STYLES` (in `data/trigrams.ts:14`), `QUOTE_STYLES` (line 15), `VALID_STYLES` (in `commands/hexagram.ts:7`), and the explicit emission list in `output/json.ts:65-70` must all agree. U7 lands the parity test that locks this in.
+- **Integration coverage:** existing `exhaustive-4096.test.ts:11-84` is untouched (tests numeric derivations, not text). New `orbit-integrity.test.ts` (U11) is the cross-layer probe for 雜卦 correctness.
+- **Unchanged invariants:** every existing field on `Hexagram` (`u`, `n`, `p`, `ename`, `l`, `dx`, `tu`, `en`, `te`, `w`, `yao`, `yaoEn`) remains required and unchanged. Every existing derivation function signature (`(lines: Line[]) => number`) remains unchanged. The `Cast` shape (existing fields) is unchanged; `CastConnections` is added as a separate overlay carried in `HexagramDetail`. Storage layer (`packages/storage/src/*`) is unchanged — it doesn't persist Hexagram text, only Cast + Structure.
+
+## Risks & Dependencies
+
+| Risk | Mitigation |
+|---|---|
+| **Legge cleanup re-pull misses a blocker** — archive.org OCR has its own noise. | U9 names each blocker as an independent named test. Verification is by named-blocker absence, not OCR fidelity. Multi-source fallback covers single-source OCR errors. |
+| **Backfilling `gua.ts` corrupts an existing field** — `gua.ts` is 104KB and hand-authored. | U8 verifies every existing field against the pre-backfill content (git blob hash or frozen fixture). Backfill agent only adds new keys; preserve-existing is a load-bearing invariant. |
+| **STYLES parity drift** between hardcoded lists during the new-field expansion. | U7 lands a parity test that asserts `STYLES`, `QUOTE_STYLES`, `VALID_STYLES`, and the JSON-emission keys are equal sets (modulo `"st"`). Any future drift fails CI. |
+| **Stacked-voice renderer wastes space on hexagrams with no new fields** — legacy hexagrams could regress visually. | U6 explicit happy-path test: "renders legacy 5-field hexagram unchanged from today." Gates this regression at the test layer. |
+| **Editorial `TRIGRAM_ASSOC_EN` glosses get mistaken for canonical Legge translation** — credibility concern for serious practitioners. | UI labels the gloss row explicitly as "project gloss" (Q5 decision). U4 documents this at the file head; U11's `data-layers.md` covers it at the docs layer. |
+| **Disordered-tail handling produces silent incorrect pairings.** | U11's orbit-integrity test is the probe. It locks the non-tail invariant; tail-by-source-fidelity is enforced by U2's verifiers. |
+| **Storage layer migration accidentally needed** if anyone embeds a full Hexagram in journal. | Already verified: `packages/storage/src/schema-keys.ts:29-36` persists only `cast` and `structure`, not Hexagram. Spot-checked in this session's integration mapping. |
+
+## Bug-trace / Confidence Cross-Check
+
+| Origin requirement | Plan response | Match? |
+|---|---|---|
+| **R: 卦辭 must appear at top of cast (currently absent in both languages)** | U8 backfills `gc`/`gcEn` into all 64 entries; U6 renders 卦辭 section at top when populated. | ✓ |
+| **R: 小象傳 pairs with existing yao, renders only for changing lines** | U8 backfills `yaoXiao[6]` per hex; U6 renders per-line under each changing-line yao. | ✓ |
+| **R: 說卦 trigramAssociations enriches TrigramInfo + chapters are citation source** | U3 ships SHUOGUA chapters + TRIGRAM_ASSOC keyed map; U4 wires assoc into TrigramInfo; U5 ships `DERIVATION_CITATIONS` map for badge citation; U6 surfaces both. | ✓ |
+| **R: 序卦/雜卦 belong inside relations block, not separate bridge-text** | U6 places 序卦 + 雜卦 as rows alongside numeric derivation badges in the relations block; data layer keeps them as overlay (`CastConnections`) not as derivations. | ✓ |
+| **R: Legge needs cleanup re-pull before integration (0/3 verdicts on current pull)** | U9 dedicated cleanup workflow; U10 promotes the cleaned data, gated on U9 verification passing. | ✓ |
+| **R: Stack all three translation voices vertically (Q1)** | U6 builds `renderStackedVoices` scaffolding; U10 activates the third voice once Legge ships. | ✓ |
+| **R: Terse 說卦 citation per badge with click-through (Q3)** | U5's `shuoguaCitations` is single-chapter per derivation; U6 renders citation as a badge annotation; click-through is a render-layer concern, scaffolded in U6. | ✓ |
+| **R: extendedImages compact in cast + full on trigram reader page (Q4)** | U6 compact rendering (first 3 + expander). Trigram reader page is out of this plan's scope — deferred. | partial (cast-side complete; reader page deferred) |
+| **R: Project-authored English trigram glosses, labeled non-canonical (Q5)** | U4 ships `TRIGRAM_ASSOC_EN` in `trigrams.ts` with explicit "project-authored" label at file head and in UI. | ✓ |
+
+No contradictions surfaced. The partial match on Q4 is intentionally deferred (cast-side ships; reader page is a follow-up surface, not a data-layer concern).
+
+## High-Risk Checklist
+
+- [x] Decision rationale explicit — pure derivations + overlay + flat optional fields, justified by Consistency criterion against documented existing patterns.
+- [x] Data flow traced end-to-end — `data/*.ts` → `derivation/connections.ts` → `detail.ts` (HexagramDetail) → `detail-renderer.ts` → CLI surfaces; verified by integration-mapping agent.
+- [x] Integration scenarios named — composition matrix in High-Level Technical Design names every test case for the model-shape change.
+- [x] Unchanged invariants stated — existing 11 Hexagram fields stay required; derivation signatures unchanged; storage layer untouched; Cast shape unchanged.
+- [x] Failure modes enumerated for each external boundary — workflow verifiers per pull, parity test for hardcoded lists, orbit-integrity probe for 雜卦, byte-identical-render test for legacy hexagrams.
+- [x] Files-to-touch list grounded in agent findings, not inferred — every modified file:line cited from this session's integration-mapping agent.
+
+## Unit Sequencing
+
+Two parallel tracks; tracks merge at U10.
+
+```
+Track A (zh canon + types + renderer + CLI):
+  U1 → U2 → U3 → U4 → U5 → U6 → U7 → U8 → U11
+              \                       /
+               └─ U3 also feeds U4   /
+                  (U4 can land any time after U3) 
+
+Track B (Legge):
+  U9 → U10  (U10 also depends on U6)
+```
+
+- U1 must land first (everything depends on the types).
+- U2, U3 can land in parallel after U1.
+- U4 depends on U3.
+- U5 depends on U2 + U3.
+- U6 depends on U2 + U3 + U4 + U5.
+- U7 depends on U1 (lockstep on Style union); can land any time before U8 backfills.
+- U8 depends on U1; can run in parallel with U2-U7 (data acquisition is independent of UI/type work).
+- U9 has no internal dependencies; can run in parallel with everything.
+- U10 depends on U6 + U9.
+- U11 depends on U2 + U5; lands last as documentation closure.
+
+Shipping order recommendation: U1 → (U2, U3, U7, U9 in parallel) → (U4, U8 in parallel) → U5 → U6 → U10 → U11.
diff --git a/packages/core/src/__tests__/connections.test.ts b/packages/core/src/__tests__/connections.test.ts
new file mode 100644
index 0000000..2864688
--- /dev/null
+++ b/packages/core/src/__tests__/connections.test.ts
@@ -0,0 +1,162 @@
+import { describe, test, expect } from "bun:test";
+import { buildConnections } from "../derivation/connections.js";
+import { ZA_GUA_BY_HEX } from "../data/zagua.js";
+import { mirror } from "../derivation/mirror.js";
+import { polarity } from "../derivation/polarity.js";
+import { hexagramByKW } from "../identify/lookup.js";
+import { buildHexagramDetail } from "../detail.js";
+import type { Line } from "../types.js";
+
+/**
+ * U5 tests — connections overlay + HexagramDetail aggregation.
+ *
+ * The orbit-integrity tests are the satisfying adversarial check:
+ * for every non-tail hexagram with a 2-element 雜卦 pair, the pair must
+ * contain the geometric partner (mirror, with polarity fallback for the
+ * 8 self-mirror hexagrams). The famously disordered final 8 are
+ * whitelisted — the canon's own irregularity, not a pull bug.
+ */
+
+const DISORDERED_TAIL = new Set([27, 28, 43, 44, 53, 54, 63, 64]);
+
+function linesOf(kw: number): Line[] {
+  const hex = hexagramByKW(kw);
+  return hex.l.map((v) => ({
+    value: v === 1 ? (7 as const) : (8 as const),
+    isYang: v === 1,
+    isChanging: false,
+  }));
+}
+
+describe("connections — text overlay for a cast", () => {
+  test("returns 5 shuoguaCitations covering all DerivedType ops", () => {
+    const conn = buildConnections({ primary: 3 });
+    expect(conn.shuoguaCitations).toHaveLength(5);
+    const ops = conn.shuoguaCitations.map((c) => c.op).sort();
+    expect(ops).toEqual(["becoming", "diagonal", "mirror", "nuclear", "polarity"]);
+  });
+
+  test("shuoguaCitations chapter numbers are valid 1..11", () => {
+    const conn = buildConnections({ primary: 3 });
+    for (const c of conn.shuoguaCitations) {
+      expect(c.chapter).toBeGreaterThanOrEqual(1);
+      expect(c.chapter).toBeLessThanOrEqual(11);
+    }
+  });
+
+  test("hex 3 (屯) — xuGua carries canonical sequence transition", () => {
+    const conn = buildConnections({ primary: 3 });
+    expect(conn.xuGua).toBeDefined();
+    expect(conn.xuGua!.hexagram).toBe(3);
+    expect(conn.xuGua!.name).toBe("屯");
+    expect(conn.xuGua!.text).toContain("故受之以");
+  });
+
+  test("hex 1 (乾) — xuGua present with shared cosmological preamble note", () => {
+    const conn = buildConnections({ primary: 1 });
+    expect(conn.xuGua).toBeDefined();
+    expect(conn.xuGua!.name).toBe("乾");
+    expect(conn.xuGua!.text).toContain("有天地，然後萬物生焉");
+    expect(conn.xuGua!.note).toBeDefined();
+  });
+
+  test("hex 1 + hex 2 share the opening cosmological preamble", () => {
+    const conn1 = buildConnections({ primary: 1 });
+    const conn2 = buildConnections({ primary: 2 });
+    expect(conn1.xuGua!.text).toBe(conn2.xuGua!.text);
+  });
+
+  test("hex 1 (乾) — zaGuaPair has both 乾 and 坤 (canonical opening pair)", () => {
+    const conn = buildConnections({ primary: 1 });
+    expect(conn.zaGuaPair).toBeDefined();
+    expect(conn.zaGuaPair!.pair).toEqual([1, 2]);
+    expect(conn.zaGuaPair!.text).toContain("剛");
+    expect(conn.zaGuaPair!.text).toContain("柔");
+  });
+
+  test("hex 29 (坎) + hex 30 (離) — entries present (self-mirror pair)", () => {
+    const conn29 = buildConnections({ primary: 29 });
+    const conn30 = buildConnections({ primary: 30 });
+    expect(conn29.zaGuaPair).toBeDefined();
+    expect(conn30.zaGuaPair).toBeDefined();
+    // Their entries reference 29 / 30 somewhere in the pair[] arrays.
+    const both = new Set([
+      ...conn29.zaGuaPair!.pair,
+      ...conn30.zaGuaPair!.pair,
+    ]);
+    expect(both.has(29)).toBe(true);
+    expect(both.has(30)).toBe(true);
+  });
+
+  test("returns fresh shuoguaCitations array per call (no shared mutable state)", () => {
+    const a = buildConnections({ primary: 3 });
+    const b = buildConnections({ primary: 3 });
+    expect(a.shuoguaCitations).not.toBe(b.shuoguaCitations);
+    expect(a.shuoguaCitations).toEqual(b.shuoguaCitations);
+  });
+
+  test("xuGua and zaGuaPair populated for all valid hex 1..64", () => {
+    for (let h = 1; h <= 64; h++) {
+      const conn = buildConnections({ primary: h });
+      expect(conn.xuGua).toBeDefined();
+      expect(conn.zaGuaPair).toBeDefined();
+    }
+  });
+});
+
+describe("orbit-integrity invariant (adversarial)", () => {
+  test("every non-tail hex with a 2-element pair contains its geometric partner", () => {
+    for (let h = 1; h <= 64; h++) {
+      if (DISORDERED_TAIL.has(h)) continue;
+      const entry = ZA_GUA_BY_HEX[h];
+      expect(entry).toBeDefined();
+      if (entry!.pair.length !== 2) continue;
+
+      const lines = linesOf(h);
+      const m = mirror(lines);
+      const partner = m !== h ? m : polarity(lines);
+
+      // The pair contains the geometric partner.
+      expect(entry!.pair).toContain(partner);
+    }
+  });
+
+  test("disordered-tail hexagrams have entries even though the invariant is suspended", () => {
+    for (const h of DISORDERED_TAIL) {
+      const entry = ZA_GUA_BY_HEX[h];
+      expect(entry).toBeDefined();
+      expect(entry!.pair).toContain(h);
+    }
+  });
+
+  test("for every hex 1..64, ZA_GUA_BY_HEX resolves to an entry containing that hex", () => {
+    for (let h = 1; h <= 64; h++) {
+      const entry = ZA_GUA_BY_HEX[h];
+      expect(entry).toBeDefined();
+      expect(entry!.pair).toContain(h);
+    }
+  });
+});
+
+describe("HexagramDetail integration", () => {
+  test("buildHexagramDetail embeds the connections overlay", () => {
+    const detail = buildHexagramDetail(3);
+    expect(detail.connections).toBeDefined();
+    expect(detail.connections.xuGua?.name).toBe("屯");
+    expect(detail.connections.zaGuaPair).toBeDefined();
+    expect(detail.connections.shuoguaCitations).toHaveLength(5);
+  });
+
+  test("existing HexagramDetail fields are unchanged by U5", () => {
+    const detail = buildHexagramDetail(1);
+    expect(detail.kw).toBe(1);
+    expect(detail.gua.n).toBe("乾");
+    expect(detail.structure.upper.n).toBe("乾");
+    expect(detail.structure.lower.n).toBe("乾");
+    expect(detail.nuclear.kw).toBe(1);
+    expect(detail.polarity.kw).toBe(2);
+    expect(detail.mirror.kw).toBe(1);
+    expect(detail.diagonal.kw).toBe(2);
+    expect(typeof detail.isLocked).toBe("boolean");
+  });
+});
diff --git a/packages/core/src/__tests__/data-coverage.test.ts b/packages/core/src/__tests__/data-coverage.test.ts
new file mode 100644
index 0000000..ab1f35f
--- /dev/null
+++ b/packages/core/src/__tests__/data-coverage.test.ts
@@ -0,0 +1,143 @@
+import { describe, test, expect } from "bun:test";
+import { GUA } from "../data/gua.js";
+import { XU_GUA } from "../data/xugua.js";
+import { ZA_GUA_BY_HEX } from "../data/zagua.js";
+import { LEGGE_ZAGUA_BY_HEX } from "../data/legge.js";
+import { buildConnections } from "../derivation/connections.js";
+
+/**
+ * Data-coverage invariants — the "enrichment outran wiring" guard.
+ *
+ * After multi-wave enrichment (U1–U11 + the post-/code-review cluster),
+ * every optional field declared on the type surface should either:
+ *   (a) be populated for all 64 hexagrams, OR
+ *   (b) carry a documented exception this test pins explicitly.
+ *
+ * The risk this test catches: a future wave adds a field, declares it on
+ * the type, gates a renderer branch on it — but never backfills the data.
+ * The branch goes silently dead. This test would fail.
+ */
+
+// LEGGE_ZAGUA_BY_HEX reroutes the two documented anomalies (pair=[41] →
+// hex 39, pair=[50,51] → hexes 49 + 50), so all 64 hexes now get a Legge couplet.
+// Historically these were treated as a gap; the reroute closes it.
+
+describe("Hexagram-level field coverage", () => {
+  test("gc — all 64 hexagrams populated (root oracle, U8)", () => {
+    const missing = GUA.map((g, i) => (g.gc ? null : i + 1)).filter(Boolean);
+    expect(missing).toEqual([]);
+  });
+
+  test("gcEn — all 64 hexagrams populated (English of 卦辭, U10)", () => {
+    const missing = GUA.map((g, i) => (g.gcEn ? null : i + 1)).filter(Boolean);
+    expect(missing).toEqual([]);
+  });
+
+  test("gcEn === legge.judgment for all 64 (single source of truth invariant)", () => {
+    // Both fields carry the same Legge text. This test pins their equality
+    // so a future edit that touches only one silently diverges → caught.
+    for (let i = 0; i < 64; i++) {
+      expect(GUA[i]!.gcEn).toBe(GUA[i]!.legge!.judgment);
+    }
+  });
+
+  test("yaoXiao — all 64 populated with exactly 6 entries (per-line 小象, U8)", () => {
+    for (let i = 0; i < 64; i++) {
+      expect(GUA[i]!.yaoXiao, `hex ${i + 1}`).toBeDefined();
+      expect(GUA[i]!.yaoXiao!).toHaveLength(6);
+    }
+  });
+
+  test("yaoXiaoEn — DOCUMENTED GAP: zero populated", () => {
+    // Legge does not translate the per-line 小象傳 (his Appendix II isn't
+    // in our pull). The renderer surfaces 小象 in zh only — there is no
+    // yaoXiaoEn branch. If this test starts failing because some hexagram
+    // gained yaoXiaoEn, decide whether the field should be backfilled for
+    // all 64 or removed from the type.
+    const populated = GUA.filter((g) => g.yaoXiaoEn).length;
+    expect(populated).toBe(0);
+  });
+
+  test("legge — all 64 hexagrams populated (U10)", () => {
+    const missing = GUA.map((g, i) => (g.legge ? null : i + 1)).filter(Boolean);
+    expect(missing).toEqual([]);
+  });
+
+  test("legge.lines — hex 1 & 2 have 7 entries (用九/用六); hex 3..64 have 6", () => {
+    expect(GUA[0]!.legge!.lines).toHaveLength(7);
+    expect(GUA[1]!.legge!.lines).toHaveLength(7);
+    for (let i = 2; i < 64; i++) {
+      expect(GUA[i]!.legge!.lines.length, `hex ${i + 1}`).toBe(6);
+    }
+  });
+});
+
+describe("Wings textEn coverage", () => {
+  test("XU_GUA — all 64 entries have textEn (序卦 English from Legge, U10)", () => {
+    const missing = XU_GUA.map((e) => (e.textEn ? null : e.hexagram)).filter(Boolean);
+    expect(missing).toEqual([]);
+  });
+
+  test("ZA_GUA — all 64 hexes covered by ZA_GUA_BY_HEX with non-empty zh", () => {
+    for (let h = 1; h <= 64; h++) {
+      const entry = ZA_GUA_BY_HEX[h];
+      expect(entry, `hex ${h}`).toBeDefined();
+      expect(entry!.text.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("LEGGE_ZAGUA_BY_HEX — covers all 64 hexes (anomalies rerouted)", () => {
+    for (let h = 1; h <= 64; h++) {
+      expect(LEGGE_ZAGUA_BY_HEX[h], `hex ${h}`).toBeDefined();
+      expect(LEGGE_ZAGUA_BY_HEX[h]!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("anomaly reroute — hex 39 carries Kien content, hex 49 + 50 carry Ko/Ting content", () => {
+    // The pair=[41] couplet's content describes Kien (hex 39); rerouted.
+    expect(LEGGE_ZAGUA_BY_HEX[39]).toMatch(/Kien/i);
+    // The pair=[50,51] couplet's content describes Ko + Ting (hexes 49 + 50); rerouted.
+    expect(LEGGE_ZAGUA_BY_HEX[49]).toMatch(/Ting.*Ko/);
+    expect(LEGGE_ZAGUA_BY_HEX[50]).toBe(LEGGE_ZAGUA_BY_HEX[49]);
+  });
+
+  test("anomaly reroute — hex 41 + 51 keep their LEGITIMATE couplets (not overwritten)", () => {
+    // Hex 41 should not carry the Kien text now that the anomaly is routed away.
+    expect(LEGGE_ZAGUA_BY_HEX[41]).not.toMatch(/Kien/i);
+    expect(LEGGE_ZAGUA_BY_HEX[41]).toMatch(/Sun and Yi/);
+    // Hex 51 should not carry the Ko/Ting anomaly now that it is routed away.
+    expect(LEGGE_ZAGUA_BY_HEX[51]).not.toBe(LEGGE_ZAGUA_BY_HEX[49]);
+    expect(LEGGE_ZAGUA_BY_HEX[51]).toBe("Kan starts; Kan stops.");
+  });
+});
+
+describe("Consumer-completeness — buildConnections surfaces what the renderer reads", () => {
+  test("every hex 1..64 produces a CastConnections with populated xuGua + zaGuaPair", () => {
+    for (let h = 1; h <= 64; h++) {
+      const conn = buildConnections({ primary: h });
+      expect(conn.xuGua, `hex ${h} xuGua`).toBeDefined();
+      expect(conn.zaGuaPair, `hex ${h} zaGuaPair`).toBeDefined();
+    }
+  });
+
+  test("all 64 hexes produce a zaGuaPair with Legge textEn populated", () => {
+    for (let h = 1; h <= 64; h++) {
+      const conn = buildConnections({ primary: h });
+      expect(conn.zaGuaPair?.text.length, `hex ${h} zh`).toBeGreaterThan(0);
+      expect(conn.zaGuaPair?.textEn, `hex ${h} en`).toBeDefined();
+      expect(conn.zaGuaPair!.textEn!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("hex 1 + hex 2 xuGua share the cosmological preamble (NOT absent)", () => {
+    // The earlier CastConnections.xuGua doc said "Absent for hex 1" — that
+    // was wrong; the preamble is attributed to both. This test pins the
+    // corrected contract.
+    const c1 = buildConnections({ primary: 1 });
+    const c2 = buildConnections({ primary: 2 });
+    expect(c1.xuGua).toBeDefined();
+    expect(c2.xuGua).toBeDefined();
+    expect(c1.xuGua!.text).toBe(c2.xuGua!.text);
+    expect(c1.xuGua!.text).toContain("有天地，然後萬物生焉");
+  });
+});
diff --git a/packages/core/src/__tests__/guaci-xiaoxiang.test.ts b/packages/core/src/__tests__/guaci-xiaoxiang.test.ts
new file mode 100644
index 0000000..97a1273
--- /dev/null
+++ b/packages/core/src/__tests__/guaci-xiaoxiang.test.ts
@@ -0,0 +1,106 @@
+import { describe, test, expect } from "bun:test";
+import { GUA } from "../data/gua.js";
+
+/**
+ * U8 integrity tests — 卦辭 + 小象傳 backfill into gua.ts.
+ *
+ * Verifies that every hexagram now carries a non-empty `gc` (root oracle
+ * text) and a 6-entry `yaoXiao` (per-line Small Image commentary), spot-
+ * checks canonical anchors, and proves the 无 → 無 normalization
+ * preserved the canonical hex-25 name 无妄.
+ */
+
+describe("GUA — 卦辭 (gc) coverage", () => {
+  test("every hexagram has a non-empty gc", () => {
+    for (let i = 0; i < 64; i++) {
+      const entry = GUA[i]!;
+      expect(entry.gc, `hex ${i + 1} (${entry.n}) gc`).toBeDefined();
+      expect(entry.gc!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("hex 1 (乾) gc carries the canonical 元亨，利貞", () => {
+    expect(GUA[0]!.gc).toContain("元亨");
+    expect(GUA[0]!.gc).toContain("利貞");
+  });
+
+  test("hex 3 (屯) gc carries the canonical pattern", () => {
+    expect(GUA[2]!.gc).toContain("元亨");
+    expect(GUA[2]!.gc).toContain("利貞");
+  });
+
+  test("hex 25 (无妄) entry — hexagram name preserved as 无妄, gc carries oracle text", () => {
+    // Hex 25's name uses 无 (not 無) — canonical 周易 spelling. Backfill
+    // must not have normalized it. The gc text itself is the oracle and
+    // doesn't necessarily mention the hex name inline.
+    expect(GUA[24]!.n).toBe("无妄");
+    expect(GUA[24]!.gc).toBeDefined();
+    expect(GUA[24]!.gc!.length).toBeGreaterThan(0);
+  });
+});
+
+describe("GUA — 小象傳 (yaoXiao) coverage", () => {
+  test("every hexagram has a yaoXiao array of exactly 6 non-empty strings", () => {
+    for (let i = 0; i < 64; i++) {
+      const entry = GUA[i]!;
+      expect(entry.yaoXiao, `hex ${i + 1} (${entry.n}) yaoXiao`).toBeDefined();
+      expect(entry.yaoXiao!).toHaveLength(6);
+      for (let line = 0; line < 6; line++) {
+        expect(entry.yaoXiao![line]!.length, `hex ${i + 1} line ${line + 1}`).toBeGreaterThan(0);
+      }
+    }
+  });
+
+  test("hex 1 (乾) line 1 小象: 潛龍勿用，陽在下也", () => {
+    const xiao = GUA[0]!.yaoXiao![0]!;
+    expect(xiao).toContain("潛龍勿用");
+    expect(xiao).toContain("陽在下也");
+  });
+
+  test("hex 3 (屯) line 1 小象 carries 雖磐桓 + 志行正也", () => {
+    const xiao = GUA[2]!.yaoXiao![0]!;
+    expect(xiao).toContain("雖磐桓");
+    expect(xiao).toContain("志行正也");
+  });
+});
+
+describe("GUA — existing fields untouched by U8 backfill", () => {
+  test("hex 1 (乾) legacy fields unchanged", () => {
+    const q = GUA[0]!;
+    expect(q.u).toBe("䷀");
+    expect(q.n).toBe("乾");
+    expect(q.p).toBe("Qián");
+    expect(q.ename).toBe("The Creative");
+    expect(q.l).toEqual([1, 1, 1, 1, 1, 1]);
+    expect(q.dx).toContain("天行健");
+    expect(q.yao).toHaveLength(6);
+    expect(q.yaoEn).toHaveLength(6);
+  });
+
+  test("hex 64 (未濟) is the final entry with legacy + new fields", () => {
+    const wj = GUA[63]!;
+    expect(wj.n).toBe("未濟");
+    expect(wj.gc).toBeDefined();
+    expect(wj.yaoXiao).toHaveLength(6);
+    expect(wj.yao).toHaveLength(6);
+  });
+});
+
+describe("GUA — encoding normalization", () => {
+  test("no stray 无 in any gc or yaoXiao outside the 无妄 hex-25 name", () => {
+    const offenders: string[] = [];
+    for (let i = 0; i < 64; i++) {
+      const entry = GUA[i]!;
+      const texts = [entry.gc ?? "", ...(entry.yaoXiao ?? [])];
+      for (let t = 0; t < texts.length; t++) {
+        const matches = [...texts[t]!.matchAll(/无./g)];
+        for (const m of matches) {
+          if (m[0] !== "无妄") {
+            offenders.push(`hex ${i + 1} ${t === 0 ? "gc" : `yaoXiao[${t - 1}]`}: ${m[0]}`);
+          }
+        }
+      }
+    }
+    expect(offenders).toEqual([]);
+  });
+});
diff --git a/packages/core/src/__tests__/legge.test.ts b/packages/core/src/__tests__/legge.test.ts
new file mode 100644
index 0000000..237065e
--- /dev/null
+++ b/packages/core/src/__tests__/legge.test.ts
@@ -0,0 +1,151 @@
+import { describe, test, expect } from "bun:test";
+import { GUA } from "../data/gua.js";
+import { XU_GUA } from "../data/xugua.js";
+import {
+  LEGGE_XUGUA_EN,
+  LEGGE_ZAGUA_EN,
+  LEGGE_SHUOGUA_EN,
+  LEGGE_META,
+} from "../data/legge.js";
+
+/**
+ * U10 integrity tests — Legge backfill into GUA + XU_GUA, plus the
+ * standalone LEGGE_*_EN exports for Wings translations that don't
+ * have a clean 1:1 mapping into the zh data modules.
+ */
+
+describe("GUA — Legge backfill", () => {
+  test("every hexagram has a populated .legge with judgment, image, lines", () => {
+    for (let i = 0; i < 64; i++) {
+      const entry = GUA[i]!;
+      expect(entry.legge, `hex ${i + 1} (${entry.n}) .legge`).toBeDefined();
+      expect(entry.legge!.leggeName.length).toBeGreaterThan(0);
+      expect(entry.legge!.judgment.length).toBeGreaterThan(0);
+      expect(entry.legge!.image.length).toBeGreaterThan(0);
+      expect(entry.legge!.lines.length).toBeGreaterThanOrEqual(6);
+    }
+  });
+
+  test("every hexagram has a populated gcEn (English of 卦辭)", () => {
+    for (let i = 0; i < 64; i++) {
+      const entry = GUA[i]!;
+      expect(entry.gcEn, `hex ${i + 1} (${entry.n}) gcEn`).toBeDefined();
+      expect(entry.gcEn!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("hex 1 (Khien) Legge anchors — judgment, image, line 1", () => {
+    const q = GUA[0]!;
+    expect(q.legge!.leggeName).toContain("Khien");
+    expect(q.legge!.judgment).toContain("great and originating");
+    expect(q.legge!.image).toContain("Heaven, in its motion");
+    expect(q.legge!.lines[0]).toContain("dragon lying hid");
+    // U9 cleanup verified: the canonical Legge phrasing "The first line" /
+    // "In the first ... line" — NOT the baharna "In the first NINE" form.
+    expect(q.legge!.lines[0]).not.toMatch(/^In the first NINE/);
+  });
+
+  test("hex 1 (Khien) has 7 lines including the 用九 paragraph", () => {
+    expect(GUA[0]!.legge!.lines).toHaveLength(7);
+    expect(GUA[0]!.legge!.lines[6]).toContain("number nine");
+  });
+
+  test("hex 2 (Khwan) has 7 lines including the 用六 paragraph", () => {
+    expect(GUA[1]!.legge!.lines).toHaveLength(7);
+    expect(GUA[1]!.legge!.lines[6]).toContain("number six");
+  });
+
+  test("hexagrams 3..64 have exactly 6 lines", () => {
+    for (let i = 2; i < 64; i++) {
+      expect(GUA[i]!.legge!.lines.length, `hex ${i + 1}`).toBe(6);
+    }
+  });
+
+  test("no Legge line starts with the rejected 'In the first/second/... NINE/SIX' baharna form", () => {
+    const rejected = /^In the (first|second|third|fourth|fifth|sixth|topmost) (NINE|SIX)\b/;
+    for (let i = 0; i < 64; i++) {
+      for (const line of GUA[i]!.legge!.lines) {
+        expect(line).not.toMatch(rejected);
+      }
+    }
+  });
+});
+
+describe("XU_GUA — Legge textEn backfill", () => {
+  test("every entry has populated textEn", () => {
+    for (const entry of XU_GUA) {
+      expect(entry.textEn, `hex ${entry.hexagram}`).toBeDefined();
+      expect(entry.textEn!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("no entry has fused-digit footnote artifacts (U9 cleanup invariant)", () => {
+    // Patterns the U9 cleanup eliminated: word + digit + punctuation/word boundary.
+    const lettersDigit = /[A-Z][a-z]+\d\b/;     // Kun1, Li4
+    const parenDigit = /\)\d/;                  // (...)2
+    const spaceDigitPunct = /\b[a-zA-Z]+ \d+[.,;:]/; // multitudes 3;
+    const axeArtifact = /\baxe subjected\b/;
+    for (const entry of XU_GUA) {
+      const text = entry.textEn ?? "";
+      expect(text).not.toMatch(lettersDigit);
+      expect(text).not.toMatch(parenDigit);
+      expect(text).not.toMatch(spaceDigitPunct);
+      expect(text).not.toMatch(axeArtifact);
+    }
+  });
+});
+
+describe("LEGGE_XUGUA_EN — standalone Wings map", () => {
+  test("has 64 entries keyed 1..64", () => {
+    expect(Object.keys(LEGGE_XUGUA_EN)).toHaveLength(64);
+    for (let h = 1; h <= 64; h++) {
+      expect(LEGGE_XUGUA_EN[h], `hex ${h}`).toBeDefined();
+      expect(LEGGE_XUGUA_EN[h]!.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("hex 1 entry parallels XU_GUA[0].textEn", () => {
+    expect(LEGGE_XUGUA_EN[1]).toBe(XU_GUA[0]!.textEn!);
+  });
+});
+
+describe("LEGGE_ZAGUA_EN — Legge's 46 rhymed couplets", () => {
+  test("has 46 entries with pair[] + text", () => {
+    expect(LEGGE_ZAGUA_EN).toHaveLength(46);
+    for (const entry of LEGGE_ZAGUA_EN) {
+      expect(Array.isArray(entry.pair)).toBe(true);
+      expect(entry.text.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("opening couplet pairs Khien (1) + Khwan (2)", () => {
+    expect(LEGGE_ZAGUA_EN[0]!.pair).toEqual([1, 2]);
+    expect(LEGGE_ZAGUA_EN[0]!.text).toContain("Khien");
+    expect(LEGGE_ZAGUA_EN[0]!.text).toContain("Khwan");
+  });
+
+  test("final entry is free of nav chrome (U9 blocker 3)", () => {
+    const last = LEGGE_ZAGUA_EN[LEGGE_ZAGUA_EN.length - 1]!.text;
+    expect(last).not.toMatch(/Previous|Contents|Return to|Baharna/);
+  });
+});
+
+describe("LEGGE_SHUOGUA_EN — Legge's 22-paragraph Appendix V", () => {
+  test("has 22 entries keyed 1..22", () => {
+    expect(Object.keys(LEGGE_SHUOGUA_EN)).toHaveLength(22);
+    for (let p = 1; p <= 22; p++) {
+      expect(LEGGE_SHUOGUA_EN[p], `paragraph ${p}`).toBeDefined();
+    }
+  });
+
+  test("paragraph 1 opens with the sages-and-divining-plant anchor", () => {
+    expect(LEGGE_SHUOGUA_EN[1]).toContain("sages");
+  });
+});
+
+describe("LEGGE_META", () => {
+  test("documents source + public-domain license", () => {
+    expect(LEGGE_META.source.length).toBeGreaterThan(0);
+    expect(LEGGE_META.license).toMatch(/public domain/i);
+  });
+});
diff --git a/packages/core/src/__tests__/shuogua.test.ts b/packages/core/src/__tests__/shuogua.test.ts
new file mode 100644
index 0000000..9a33300
--- /dev/null
+++ b/packages/core/src/__tests__/shuogua.test.ts
@@ -0,0 +1,200 @@
+import { describe, test, expect } from "bun:test";
+import type { DerivedType } from "../types.js";
+import {
+  SHUO_GUA,
+  SHUOGUA_DERIVATION_CONTEXT,
+  TRIGRAM_ASSOC,
+  SHUO_GUA_META,
+} from "../data/shuogua.js";
+import { buildConnections } from "../derivation/connections.js";
+
+/**
+ * U3 integrity tests — 說卦傳 data module.
+ *
+ * Verifies the 11-chapter canonical body, the 8-trigram structured
+ * catalogue, and the verification anchors documented in the source JSON's
+ * `_meta.verificationAnchors`. The canonical fields are required by the
+ * type; the editorial fields (season, cosmologicalRole, other) are flagged
+ * as derived in the type and labeled non-canonical in the UI.
+ */
+
+const TRIGRAM_KEYS = ["乾", "坤", "震", "巽", "坎", "離", "艮", "兌"];
+
+describe("SHUO_GUA chapters", () => {
+  test("has exactly 11 chapters (standard 王弼 / 孔穎達 division)", () => {
+    expect(SHUO_GUA.chapters).toHaveLength(11);
+  });
+
+  test("chapter numbers are sequential 1..11", () => {
+    SHUO_GUA.chapters.forEach((ch, i) => {
+      expect(ch.n).toBe(i + 1);
+    });
+  });
+
+  test("every chapter has non-empty text", () => {
+    for (const ch of SHUO_GUA.chapters) {
+      expect(ch.text.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("every chapter has a project-authored modern English translation", () => {
+    for (const ch of SHUO_GUA.chapters) {
+      expect(ch.modernEn, `ch ${ch.n}`).toBeDefined();
+      expect(ch.modernEn!.length, `ch ${ch.n}`).toBeGreaterThan(20);
+    }
+  });
+
+  test("verification anchor — ch5 directional cycle (帝出乎震…)", () => {
+    const ch5 = SHUO_GUA.chapters[4]!;
+    expect(ch5.text).toContain("帝出乎震");
+    expect(ch5.text).toContain("齊乎巽");
+    expect(ch5.text).toContain("成言乎艮");
+  });
+
+  test("verification anchor — ch8 animal associations", () => {
+    const ch8 = SHUO_GUA.chapters[7]!;
+    expect(ch8.text).toContain("乾為馬");
+    expect(ch8.text).toContain("坤為牛");
+    expect(ch8.text).toContain("艮為狗");
+    expect(ch8.text).toContain("兌為羊");
+  });
+
+  test("verification anchor — ch11 extended trigram catalogue", () => {
+    const ch11 = SHUO_GUA.chapters[10]!;
+    expect(ch11.text).toContain("乾為天");
+    expect(ch11.text).toContain("為圜");
+    expect(ch11.text).toContain("坤為地");
+    expect(ch11.text).toContain("為母");
+  });
+});
+
+describe("SHUOGUA_DERIVATION_CONTEXT", () => {
+  const DERIVED_TYPES: DerivedType[] = [
+    "nuclear",
+    "polarity",
+    "mirror",
+    "becoming",
+    "diagonal",
+  ];
+
+  test("covers every DerivedType with a non-empty relevance note", () => {
+    expect(Object.keys(SHUOGUA_DERIVATION_CONTEXT).sort()).toEqual([...DERIVED_TYPES].sort());
+    for (const op of DERIVED_TYPES) {
+      const context = SHUOGUA_DERIVATION_CONTEXT[op];
+      expect(context.chapter).toBeGreaterThanOrEqual(1);
+      expect(context.chapter).toBeLessThanOrEqual(11);
+      expect(context.title.length).toBeGreaterThan(0);
+      expect(context.relevance.length).toBeGreaterThan(40);
+    }
+  });
+
+  test("context chapter numbers match buildConnections citations", () => {
+    const citations = buildConnections({ primary: 1 }).shuoguaCitations;
+    for (const citation of citations) {
+      expect(SHUOGUA_DERIVATION_CONTEXT[citation.op].chapter).toBe(citation.chapter);
+    }
+  });
+});
+
+describe("TRIGRAM_ASSOC", () => {
+  test("has 8 entries keyed by canonical trigram zh char", () => {
+    expect(Object.keys(TRIGRAM_ASSOC).sort()).toEqual([...TRIGRAM_KEYS].sort());
+  });
+
+  test("every trigram has all 7 canonical fields populated", () => {
+    for (const k of TRIGRAM_KEYS) {
+      const assoc = TRIGRAM_ASSOC[k];
+      expect(assoc).toBeDefined();
+      expect(assoc!.image.length).toBeGreaterThan(0);
+      expect(assoc!.family.length).toBeGreaterThan(0);
+      expect(assoc!.body.length).toBeGreaterThan(0);
+      expect(assoc!.animal.length).toBeGreaterThan(0);
+      expect(assoc!.direction.length).toBeGreaterThan(0);
+      expect(assoc!.attribute.length).toBeGreaterThan(0);
+      expect(assoc!.extendedImages.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("乾 canonical fields match canon", () => {
+    const q = TRIGRAM_ASSOC["乾"]!;
+    expect(q.image).toBe("天");
+    expect(q.family).toBe("父");
+    expect(q.body).toBe("首");
+    expect(q.animal).toBe("馬");
+    expect(q.direction).toBe("西北");
+    expect(q.attribute).toBe("健");
+    // ch.11 catalogue for 乾 has 14 extended images
+    expect(q.extendedImages).toHaveLength(14);
+  });
+
+  test("坤 canonical fields match canon", () => {
+    const k = TRIGRAM_ASSOC["坤"]!;
+    expect(k.image).toBe("地");
+    expect(k.family).toBe("母");
+    expect(k.body).toBe("腹");
+    expect(k.animal).toBe("牛");
+    expect(k.direction).toBe("西南");
+    expect(k.attribute).toBe("順");
+  });
+
+  test("animal column matches 說卦 ch.8 exact list", () => {
+    expect(TRIGRAM_ASSOC["乾"]!.animal).toBe("馬");
+    expect(TRIGRAM_ASSOC["坤"]!.animal).toBe("牛");
+    expect(TRIGRAM_ASSOC["震"]!.animal).toBe("龍");
+    expect(TRIGRAM_ASSOC["巽"]!.animal).toBe("雞");
+    expect(TRIGRAM_ASSOC["坎"]!.animal).toBe("豕");
+    expect(TRIGRAM_ASSOC["離"]!.animal).toBe("雉");
+    expect(TRIGRAM_ASSOC["艮"]!.animal).toBe("狗");
+    expect(TRIGRAM_ASSOC["兌"]!.animal).toBe("羊");
+  });
+
+  test("family column matches the 索 indexing scheme (父母三男三女)", () => {
+    expect(TRIGRAM_ASSOC["乾"]!.family).toBe("父");
+    expect(TRIGRAM_ASSOC["坤"]!.family).toBe("母");
+    expect(TRIGRAM_ASSOC["震"]!.family).toBe("長男");
+    expect(TRIGRAM_ASSOC["巽"]!.family).toBe("長女");
+    expect(TRIGRAM_ASSOC["坎"]!.family).toBe("中男");
+    expect(TRIGRAM_ASSOC["離"]!.family).toBe("中女");
+    expect(TRIGRAM_ASSOC["艮"]!.family).toBe("少男");
+    expect(TRIGRAM_ASSOC["兌"]!.family).toBe("少女");
+  });
+
+  test("body column matches 說卦 ch.9 list", () => {
+    expect(TRIGRAM_ASSOC["乾"]!.body).toBe("首");
+    expect(TRIGRAM_ASSOC["坤"]!.body).toBe("腹");
+    expect(TRIGRAM_ASSOC["震"]!.body).toBe("足");
+    expect(TRIGRAM_ASSOC["巽"]!.body).toBe("股");
+    expect(TRIGRAM_ASSOC["坎"]!.body).toBe("耳");
+    expect(TRIGRAM_ASSOC["離"]!.body).toBe("目");
+    expect(TRIGRAM_ASSOC["艮"]!.body).toBe("手");
+    expect(TRIGRAM_ASSOC["兌"]!.body).toBe("口");
+  });
+
+  test("attribute column matches 說卦 ch.7 (健順動入陷麗止說)", () => {
+    expect(TRIGRAM_ASSOC["乾"]!.attribute).toBe("健");
+    expect(TRIGRAM_ASSOC["坤"]!.attribute).toBe("順");
+    expect(TRIGRAM_ASSOC["震"]!.attribute).toBe("動");
+    expect(TRIGRAM_ASSOC["巽"]!.attribute).toBe("入");
+    expect(TRIGRAM_ASSOC["坎"]!.attribute).toBe("陷");
+    expect(TRIGRAM_ASSOC["離"]!.attribute).toBe("麗");
+    expect(TRIGRAM_ASSOC["艮"]!.attribute).toBe("止");
+    expect(TRIGRAM_ASSOC["兌"]!.attribute).toBe("說");
+  });
+
+  test("editorial fields populated where the source provides them", () => {
+    // The JSON warn flagged season/cosmologicalRole/other as editorial
+    // synthesis with English glosses in parens. Spot-check 乾 has all three.
+    expect(TRIGRAM_ASSOC["乾"]!.season).toBeDefined();
+    expect(TRIGRAM_ASSOC["乾"]!.cosmologicalRole).toBeDefined();
+    expect(TRIGRAM_ASSOC["乾"]!.other).toBeDefined();
+  });
+});
+
+describe("SHUO_GUA_META", () => {
+  test("carries provenance + chapter count", () => {
+    expect(SHUO_GUA_META.source).toMatch(/ctext\.org/);
+    expect(SHUO_GUA_META.crossChecks.length).toBeGreaterThan(0);
+    expect(SHUO_GUA_META.license).toMatch(/public domain/);
+    expect(SHUO_GUA_META.chapterCount).toBe(11);
+  });
+});
diff --git a/packages/core/src/__tests__/trigrams.test.ts b/packages/core/src/__tests__/trigrams.test.ts
new file mode 100644
index 0000000..45bf323
--- /dev/null
+++ b/packages/core/src/__tests__/trigrams.test.ts
@@ -0,0 +1,98 @@
+import { describe, test, expect } from "bun:test";
+import { TRIGRAMS, TRIGRAM_ASSOC_GLOSS_EN } from "../data/trigrams.js";
+import { TRIGRAM_ASSOC } from "../data/shuogua.js";
+
+/**
+ * U4 integrity tests — TrigramInfo enrichment + project-authored English
+ * glosses. Validates that:
+ *   - every TrigramInfo carries the canonical 說卦 catalogue via .assoc
+ *   - TRIGRAM_ASSOC_GLOSS_EN parallels the 8 trigrams with the 5 expected fields
+ *   - editorial English does not contaminate canonical zh
+ */
+
+const ZH_NAMES = ["坤", "震", "坎", "兌", "艮", "離", "巽", "乾"]; // in TRIGRAMS order
+
+describe("TRIGRAMS — TrigramInfo enrichment with assoc", () => {
+  test("has 8 entries in canonical binary order", () => {
+    expect(TRIGRAMS).toHaveLength(8);
+    TRIGRAMS.forEach((t, i) => {
+      expect(t.n).toBe(ZH_NAMES[i]);
+    });
+  });
+
+  test("every TrigramInfo carries .assoc pointing into TRIGRAM_ASSOC", () => {
+    for (const trigram of TRIGRAMS) {
+      expect(trigram.assoc).toBeDefined();
+      // Same reference — the wiring is by identity, not a copy.
+      expect(trigram.assoc).toBe(TRIGRAM_ASSOC[trigram.n]!);
+    }
+  });
+
+  test("each TrigramInfo.assoc has all canonical fields populated", () => {
+    for (const trigram of TRIGRAMS) {
+      const assoc = trigram.assoc!;
+      expect(assoc.image.length).toBeGreaterThan(0);
+      expect(assoc.family.length).toBeGreaterThan(0);
+      expect(assoc.body.length).toBeGreaterThan(0);
+      expect(assoc.animal.length).toBeGreaterThan(0);
+      expect(assoc.direction.length).toBeGreaterThan(0);
+      expect(assoc.attribute.length).toBeGreaterThan(0);
+      expect(assoc.extendedImages.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("existing TrigramInfo fields (sym, n, img) are unchanged", () => {
+    // Lock the legacy contract — adding .assoc must not silently shift
+    // the other fields. These exact values are the pre-U4 baseline.
+    expect(TRIGRAMS[0]).toMatchObject({ n: "坤", img: "earth", sym: "☷" });
+    expect(TRIGRAMS[7]).toMatchObject({ n: "乾", img: "heaven", sym: "☰" });
+  });
+});
+
+describe("TRIGRAM_ASSOC_GLOSS_EN — project-authored English glosses", () => {
+  const TRIGRAM_KEYS = ["乾", "坤", "震", "巽", "坎", "離", "艮", "兌"];
+  const EN_FIELDS = ["family", "body", "animal", "direction", "attribute"] as const;
+
+  test("has 8 entries keyed by trigram zh char", () => {
+    expect(Object.keys(TRIGRAM_ASSOC_GLOSS_EN).sort()).toEqual([...TRIGRAM_KEYS].sort());
+  });
+
+  test("every entry has all 5 required English fields", () => {
+    for (const k of TRIGRAM_KEYS) {
+      const en = TRIGRAM_ASSOC_GLOSS_EN[k]!;
+      for (const field of EN_FIELDS) {
+        expect(en[field]).toBeDefined();
+        expect(en[field].length).toBeGreaterThan(0);
+      }
+    }
+  });
+
+  test("no entry carries extendedImages (project policy — render zh only)", () => {
+    for (const k of TRIGRAM_KEYS) {
+      const en = TRIGRAM_ASSOC_GLOSS_EN[k] as unknown as Record<string, unknown>;
+      expect(en.extendedImages).toBeUndefined();
+    }
+  });
+
+  test("project family glosses follow the eldest/middle/youngest scheme", () => {
+    expect(TRIGRAM_ASSOC_GLOSS_EN["乾"]!.family).toBe("father");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["坤"]!.family).toBe("mother");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["震"]!.family).toBe("eldest son");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["巽"]!.family).toBe("eldest daughter");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["坎"]!.family).toBe("middle son");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["離"]!.family).toBe("middle daughter");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["艮"]!.family).toBe("youngest son");
+    expect(TRIGRAM_ASSOC_GLOSS_EN["兌"]!.family).toBe("youngest daughter");
+  });
+
+  test("project glosses use ASCII-only single-word labels (no canonical zh leak)", () => {
+    // Defense against accidentally pasting a zh character into the en gloss.
+    const asciiOnly = /^[\x20-\x7E]+$/;
+    for (const k of Object.keys(TRIGRAM_ASSOC_GLOSS_EN)) {
+      const en = TRIGRAM_ASSOC_GLOSS_EN[k]!;
+      for (const field of EN_FIELDS) {
+        expect(en[field]).toMatch(asciiOnly);
+      }
+    }
+  });
+});
diff --git a/packages/core/src/__tests__/types.compile.test.ts b/packages/core/src/__tests__/types.compile.test.ts
new file mode 100644
index 0000000..5adbc81
--- /dev/null
+++ b/packages/core/src/__tests__/types.compile.test.ts
@@ -0,0 +1,159 @@
+import { describe, test, expect } from "bun:test";
+import type {
+  Hexagram,
+  TrigramInfo,
+  XuGuaEntry,
+  ZaGuaEntry,
+  ShuoguaChapter,
+  ShuoguaCitation,
+  CastConnections,
+  Style,
+  QuoteStyle,
+} from "../types.js";
+
+/**
+ * Type-only test for the data-enrichment extensions.
+ *
+ * The real guard is `bun run typecheck`; the `expect` calls below just confirm
+ * the file ran and the literals match what the type system enforces.
+ */
+
+describe("types — data enrichment extensions", () => {
+  test("legacy Hexagram literal compiles with no new fields", () => {
+    const legacy: Hexagram = {
+      u: "X",
+      n: "X",
+      p: "X",
+      ename: "X",
+      l: [1, 1, 1, 1, 1, 1],
+      dx: "X",
+      tu: "X",
+      en: "X",
+      te: "X",
+      w: "X",
+      yao: ["", "", "", "", "", ""],
+      yaoEn: ["", "", "", "", "", ""],
+    };
+    expect(legacy.gc).toBeUndefined();
+    expect(legacy.gcEn).toBeUndefined();
+    expect(legacy.yaoXiao).toBeUndefined();
+    expect(legacy.yaoXiaoEn).toBeUndefined();
+    expect(legacy.legge).toBeUndefined();
+  });
+
+  test("Hexagram literal with every new optional field compiles", () => {
+    const enriched: Hexagram = {
+      u: "X",
+      n: "X",
+      p: "X",
+      ename: "X",
+      l: [1, 1, 1, 1, 1, 1],
+      dx: "X",
+      tu: "X",
+      en: "X",
+      te: "X",
+      w: "X",
+      yao: ["", "", "", "", "", ""],
+      yaoEn: ["", "", "", "", "", ""],
+      gc: "X",
+      gcEn: "X",
+      yaoXiao: ["", "", "", "", "", ""],
+      yaoXiaoEn: ["", "", "", "", "", ""],
+      legge: {
+        leggeName: "X",
+        judgment: "X",
+        image: "X",
+        lines: ["", "", "", "", "", "", ""],
+      },
+    };
+    expect(enriched.gc).toBe("X");
+    expect(enriched.legge?.lines).toHaveLength(7);
+  });
+
+  test("TrigramInfo with assoc compiles", () => {
+    const t: TrigramInfo = {
+      sym: "X",
+      n: "X",
+      img: "X",
+      assoc: {
+        image: "X",
+        family: "X",
+        body: "X",
+        animal: "X",
+        direction: "X",
+        attribute: "X",
+        extendedImages: ["X"],
+      },
+    };
+    expect(t.assoc?.extendedImages).toHaveLength(1);
+  });
+
+  test("TrigramInfo with optional editorial assoc fields compiles", () => {
+    const t: TrigramInfo = {
+      sym: "X",
+      n: "X",
+      img: "X",
+      assoc: {
+        image: "X",
+        family: "X",
+        body: "X",
+        animal: "X",
+        direction: "X",
+        attribute: "X",
+        extendedImages: [],
+        season: "X",
+        cosmologicalRole: "X",
+        other: "X",
+      },
+    };
+    expect(t.assoc?.season).toBe("X");
+  });
+
+  test("XuGuaEntry, ZaGuaEntry, ShuoguaChapter shapes compile", () => {
+    const xu: XuGuaEntry = { hexagram: 3, name: "X", text: "X" };
+    const za: ZaGuaEntry = { index: 0, pair: [1, 2], names: ["X", "X"], text: "X" };
+    const ch: ShuoguaChapter = { n: 1, text: "X" };
+    expect(xu.text.length).toBeGreaterThan(0);
+    expect(za.pair).toHaveLength(2);
+    expect(ch.n).toBe(1);
+  });
+
+  test("XuGuaEntry and ZaGuaEntry support optional textEn (Legge)", () => {
+    const xu: XuGuaEntry = { hexagram: 1, name: "X", text: "X", textEn: "X", note: "X" };
+    const za: ZaGuaEntry = { index: 0, pair: [1, 2], names: ["X", "X"], text: "X", textEn: "X" };
+    expect(xu.textEn).toBe("X");
+    expect(za.textEn).toBe("X");
+  });
+
+  test("ShuoguaCitation typed against DerivedType", () => {
+    const citation: ShuoguaCitation = { op: "nuclear", chapter: 3 };
+    expect(citation.op).toBe("nuclear");
+    expect(citation.chapter).toBe(3);
+  });
+
+  test("CastConnections has required citations + optional pair fields", () => {
+    const conn: CastConnections = {
+      shuoguaCitations: [
+        { op: "nuclear", chapter: 3 },
+        { op: "polarity", chapter: 2 },
+      ],
+    };
+    expect(conn.shuoguaCitations).toHaveLength(2);
+    expect(conn.xuGua).toBeUndefined();
+    expect(conn.zaGuaPair).toBeUndefined();
+  });
+
+  test("Style union unchanged from baseline; QuoteStyle still excludes st", () => {
+    // Style and QuoteStyle are unchanged by U1. Extension to include the new
+    // optional `gc` field as a Style key is deferred to U7 (lockstep with the
+    // CLI consumer sites). For U1 the new optional fields are direct-access
+    // only.
+    const styles: Style[] = ["dx", "tu", "en", "te", "w", "st"];
+    const quoteStyles: QuoteStyle[] = ["dx", "tu", "en", "te", "w"];
+    expect(styles).toHaveLength(6);
+    expect(quoteStyles).toHaveLength(5);
+    // QuoteStyle must not include "st" (enforced by Exclude<Style, "st">).
+    const isStInQuoteStyle: "st" extends QuoteStyle ? true : false = false;
+    expect(isStInQuoteStyle).toBe(false);
+  });
+});
diff --git a/packages/core/src/__tests__/xugua-zagua.test.ts b/packages/core/src/__tests__/xugua-zagua.test.ts
new file mode 100644
index 0000000..0813c75
--- /dev/null
+++ b/packages/core/src/__tests__/xugua-zagua.test.ts
@@ -0,0 +1,142 @@
+import { describe, test, expect } from "bun:test";
+import { XU_GUA, XU_GUA_META } from "../data/xugua.js";
+import { ZA_GUA, ZA_GUA_META, ZA_GUA_BY_HEX } from "../data/zagua.js";
+
+/**
+ * U2 integrity tests — 序卦 + 雜卦 data modules.
+ *
+ * The canonical text content is verified verbatim against ctext.org with a
+ * Wikisource cross-check; these tests lock in the structural invariants
+ * (coverage, indices, anchors, editorial notes) that future contributors
+ * must preserve.
+ */
+
+describe("XU_GUA (序卦傳)", () => {
+  test("has exactly 64 entries", () => {
+    expect(XU_GUA).toHaveLength(64);
+  });
+
+  test("entries are ordered 1..64 with no gaps", () => {
+    XU_GUA.forEach((entry, i) => {
+      expect(entry.hexagram).toBe(i + 1);
+    });
+  });
+
+  test("every entry has non-empty text and zh name", () => {
+    for (const entry of XU_GUA) {
+      expect(entry.text.length).toBeGreaterThan(0);
+      expect(entry.name.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("verification anchor — opening cosmological premise on hex 1 + 2", () => {
+    expect(XU_GUA[0]!.name).toBe("乾");
+    expect(XU_GUA[0]!.text).toContain("有天地，然後萬物生焉");
+    expect(XU_GUA[1]!.name).toBe("坤");
+    expect(XU_GUA[1]!.text).toContain("有天地，然後萬物生焉");
+  });
+
+  test("hex 3 (屯) carries the canonical sequence transition", () => {
+    expect(XU_GUA[2]!.name).toBe("屯");
+    expect(XU_GUA[2]!.text).toContain("故受之以");
+    expect(XU_GUA[2]!.text).toContain("屯");
+  });
+
+  test("editorial notes carried on hex 1, 2, 30, 31 (per JSON _meta)", () => {
+    expect(XU_GUA[0]!.note).toBeDefined();
+    expect(XU_GUA[1]!.note).toBeDefined();
+    expect(XU_GUA[29]!.note).toBeDefined();
+    expect(XU_GUA[30]!.note).toBeDefined();
+  });
+
+  test("XU_GUA_META carries provenance", () => {
+    expect(XU_GUA_META.source).toMatch(/ctext\.org/);
+    expect(XU_GUA_META.crossChecks.length).toBeGreaterThan(0);
+    expect(XU_GUA_META.license).toMatch(/public domain/);
+  });
+});
+
+describe("ZA_GUA (雜卦傳)", () => {
+  test("has 53 entries (preserves the disordered structure)", () => {
+    expect(ZA_GUA).toHaveLength(53);
+  });
+
+  test("indices are sequential 0..52", () => {
+    ZA_GUA.forEach((entry, i) => {
+      expect(entry.index).toBe(i);
+    });
+  });
+
+  test("every entry has non-empty text", () => {
+    for (const entry of ZA_GUA) {
+      expect(entry.text.length).toBeGreaterThan(0);
+    }
+  });
+
+  test("pair[] lengths are 0, 1, or 2", () => {
+    for (const entry of ZA_GUA) {
+      expect([0, 1, 2]).toContain(entry.pair.length);
+      expect(entry.names.length).toBe(entry.pair.length);
+    }
+  });
+
+  test("verification anchor — opening 乾剛坤柔", () => {
+    expect(ZA_GUA[0]!.pair).toEqual([1, 2]);
+    expect(ZA_GUA[0]!.names).toEqual(["乾", "坤"]);
+    expect(ZA_GUA[0]!.text).toContain("乾");
+    expect(ZA_GUA[0]!.text).toContain("剛");
+    expect(ZA_GUA[0]!.text).toContain("坤");
+    expect(ZA_GUA[0]!.text).toContain("柔");
+  });
+
+  test("all 64 hexagrams appear exactly once across pair[] arrays", () => {
+    const allHexes = ZA_GUA.flatMap((e) => e.pair).sort((a, b) => a - b);
+    const expected = Array.from({ length: 64 }, (_, i) => i + 1);
+    expect(allHexes).toEqual(expected);
+  });
+
+  test("exactly one closing-coda entry with empty pair[]", () => {
+    const empty = ZA_GUA.filter((e) => e.pair.length === 0);
+    expect(empty).toHaveLength(1);
+  });
+
+  test("ZA_GUA_META carries provenance", () => {
+    expect(ZA_GUA_META.source).toMatch(/ctext\.org/);
+    expect(ZA_GUA_META.license).toMatch(/public domain/);
+  });
+});
+
+describe("ZA_GUA_BY_HEX (reverse index)", () => {
+  test("has exactly 64 keys (one per hexagram)", () => {
+    expect(Object.keys(ZA_GUA_BY_HEX)).toHaveLength(64);
+  });
+
+  test("hexagrams 1 and 2 share the opening entry (the canonical 乾/坤 pair)", () => {
+    expect(ZA_GUA_BY_HEX[1]).toBeDefined();
+    expect(ZA_GUA_BY_HEX[2]).toBeDefined();
+    expect(ZA_GUA_BY_HEX[1]).toBe(ZA_GUA_BY_HEX[2]!);
+    expect(ZA_GUA_BY_HEX[1]).toBe(ZA_GUA[0]!);
+  });
+
+  test("every hex 1..64 maps to an entry whose pair[] contains that hex", () => {
+    for (let h = 1; h <= 64; h++) {
+      const entry = ZA_GUA_BY_HEX[h];
+      expect(entry).toBeDefined();
+      expect(entry!.pair).toContain(h);
+    }
+  });
+
+  test("hex 29 (坎) and hex 30 (離) share the polarity-fallback entry", () => {
+    expect(ZA_GUA_BY_HEX[29]).toBeDefined();
+    expect(ZA_GUA_BY_HEX[30]).toBeDefined();
+    // Both should pair via polarity (the 8 self-mirror hexagrams pattern).
+    // They might share an entry or appear in adjacent single-entry cells.
+    // We assert the entry referencing them includes the expected partner.
+    const e29 = ZA_GUA_BY_HEX[29]!;
+    const e30 = ZA_GUA_BY_HEX[30]!;
+    const e29Hexes = new Set(e29.pair);
+    const e30Hexes = new Set(e30.pair);
+    expect(e29Hexes.has(29) || e30Hexes.has(29)).toBe(true);
+    expect(e29Hexes.has(30) || e30Hexes.has(30)).toBe(true);
+  });
+});
diff --git a/packages/core/src/data/gua.ts b/packages/core/src/data/gua.ts
index 8823ad7..fa40a52 100644
--- a/packages/core/src/data/gua.ts
+++ b/packages/core/src/data/gua.ts
@@ -29,6 +29,30 @@ export const GUA: Hexagram[] = [
       "Flying dragon in the heavens. It furthers one to see the great man.",
       "Arrogant dragon will have cause to repent.",
     ],
+    gc: "元亨，利貞。",
+    yaoXiao: [
+      "潛龍勿用，陽在下也。",
+      "見龍在田，德施普也。",
+      "終日乾乾，反復道也。",
+      "或躍在淵，進無咎也。",
+      "飛龍在天，大人造也。",
+      "亢龍有悔，盈不可久也。",
+    ],
+    gcEn: "Khien (represents) what is great and originating, penetrating, advantageous, correct and firm.",
+    legge: {
+      leggeName: "Khien",
+      judgment: "Khien (represents) what is great and originating, penetrating, advantageous, correct and firm.",
+      image: "Heaven, in its motion, (gives the idea of) strength. The superior man, in accordance with this, nerves himself to ceaseless activity.",
+      lines: [
+        "In the first (or lowest) line, undivided, (we see its subject as) the dragon lying hid (in the deep). It is not the time for active doing.",
+        "In the second line, undivided, (we see its subject as) the dragon appearing in the field. It will be advantageous to meet with the great man.",
+        "In the third line, undivided, (we see its subject as) the superior man active and vigilant all the day, and in the evening still careful and apprehensive. (The position is) dangerous, but there will be no mistake.",
+        "In the fourth line, undivided, (we see its subject as the dragon looking) as if he were leaping up, but still in the deep. There will be no mistake.",
+        "In the fifth line, undivided, (we see its subject as) the dragon on the wing in the sky. It will be advantageous to meet with the great man.",
+        "In the sixth (or topmost) line, undivided, (we see its subject as) the dragon exceeding the proper limits. There will be occasion for repentance.",
+        "(The lines of this hexagram are all strong and undivided, as appears from) the use of the number nine. If the host of dragons (thus) appearing were to divest themselves of their heads, there would be good fortune.",
+      ],
+    },
   },
   {
     u: "䷁",
@@ -57,6 +81,30 @@ export const GUA: Hexagram[] = [
       "A yellow lower garment brings supreme good fortune.",
       "Dragons fight in the meadow. Their blood is black and yellow.",
     ],
+    gc: "元亨，利牝馬之貞。君子有攸往，先迷後得主，利西南得朋，東北喪朋。安貞，吉。",
+    yaoXiao: [
+      "履霜堅冰，陰始凝也。馴致其道，至堅冰也。",
+      "六二之動，直以方也。不習無不利，地道光也。",
+      "含章可貞；以時發也。或從王事，知光大也。",
+      "括囊無咎，慎不害也。",
+      "黃裳元吉，文在中也。",
+      "戰龍於野，其道窮也。",
+    ],
+    gcEn: "Khwan (represents) what is great and originating, penetrating, advantageous, correct and having the firmness of a mare. When the superior man (here intended) has to make any movement, if he take the initiative, he will go astray; if he follow, he will find his (proper) lord. The advantageousness will be seen in his getting friends in the south-west, and losing friends in the north-east. If he rest in correctness and firmness, there will be good fortune.",
+    legge: {
+      leggeName: "Khwan",
+      judgment: "Khwan (represents) what is great and originating, penetrating, advantageous, correct and having the firmness of a mare. When the superior man (here intended) has to make any movement, if he take the initiative, he will go astray; if he follow, he will find his (proper) lord. The advantageousness will be seen in his getting friends in the south-west, and losing friends in the north-east. If he rest in correctness and firmness, there will be good fortune.",
+      image: "The (capacity and sustaining) power of the earth is what is denoted by Khwan. The superior man, in accordance with this, with his large virtue supports (men and) things.",
+      lines: [
+        "In the first line, divided, (we see its subject) treading on hoarfrost. The strong ice will come (by and by).",
+        "The second line, divided, (shows the attribute of) being straight, square, and great. (Its operation), without repeated efforts, will be in every respect advantageous.",
+        "The third line, divided, (shows its subject) keeping his excellence under restraint, but firmly maintaining it. If he should have occasion to engage in the king's service, though he will not claim the success (for himself), he will bring affairs to a good issue.",
+        "The fourth line, divided, (shows the symbol of) a sack tied up. There will be no ground for blame or for praise.",
+        "The fifth line, divided, (shows) the yellow lower garment. There will be great good fortune.",
+        "The sixth line, divided (shows) dragons fighting in the wild. Their blood is purple and yellow.",
+        "(The lines of this hexagram are all weak and divided, as appears from) the use of the number six. If those (who are thus represented) be perpetually correct and firm, advantage will arise.",
+      ],
+    },
   },
   {
     u: "䷂",
@@ -85,6 +133,29 @@ export const GUA: Hexagram[] = [
       "Difficulties in bestowing his bounty. For small matters, perseverance brings good fortune. For great matters, perseverance brings misfortune.",
       "Horse and wagon part. Tears of blood flow.",
     ],
+    gc: "元亨，利貞，勿用有攸往，利建侯。",
+    yaoXiao: [
+      "雖磐桓，志行正也。以貴下賤，大得民也。",
+      "六二之難，乘剛也。十年乃字，反常也。",
+      "即鹿無虞，以縱禽也。君子舍之，往吝窮也。",
+      "求而往，明也。",
+      "屯其膏，施未光也。",
+      "泣血漣如，何可長也。",
+    ],
+    gcEn: "Kun (indicates that in the case which it presupposes) there will be great progress and success, and the advantage will come from being correct and firm. (But) any movement in advance should not be (lightly) undertaken. There will be advantage in appointing feudal princes.",
+    legge: {
+      leggeName: "Kun",
+      judgment: "Kun (indicates that in the case which it presupposes) there will be great progress and success, and the advantage will come from being correct and firm. (But) any movement in advance should not be (lightly) undertaken. There will be advantage in appointing feudal princes.",
+      image: "(The trigram representing) clouds and (that representing) thunder form Kun. The superior man, in accordance with this, (adjusts his measures of government) as in sorting the threads of the warp and woof.",
+      lines: [
+        "The first line, undivided, shows the difficulty (its subject has) in advancing. It will be advantageous for him to abide correct and firm; advantageous (also) to be made a feudal ruler.",
+        "The second line, divided, shows (its subject) distressed and obliged to return; (even) the horses of her chariot (also) seem to be retreating. (But) not by a spoiler (is she assailed), but by one who seeks her to be his wife. The young lady maintains her firm correctness, and declines a union. After ten years she will be united, and have children.",
+        "The third line, divided, shows one following the deer without (the guidance of) the forester, and only finding himself in the midst of the forest. The superior man, acquainted with the secret risks, thinks it better to give up the chase. If he went forward, he would regret it.",
+        "The fourth line, divided, shows (its subject as a lady), the horses of whose chariot appear in retreat. She seeks, however, (the help of) him who seeks her to be his wife. Advance will be fortunate; all will turn out advantageously.",
+        "The fifth line, undivided, shows the difficulties in the way of (its subject's) dispensing the rich favours that might be expected from him. With firmness and correctness there will be good fortune in small things; (even) with them in great things there will be evil.",
+        "The topmost line, divided, shows (its subject) with the horses of his chariot obliged to retreat, and weeping tears of blood in streams.",
+      ],
+    },
   },
   {
     u: "䷃",
@@ -113,6 +184,29 @@ export const GUA: Hexagram[] = [
       "Childlike folly brings good fortune.",
       "In punishing folly, it does not further one to commit transgressions. It furthers one to prevent transgressions.",
     ],
+    gc: "亨。匪我求童蒙，童蒙求我。初筮告，再三瀆，瀆則不告。利貞。",
+    yaoXiao: [
+      "利用刑人，以正法也。",
+      "子克家，剛柔接也。",
+      "勿用取女，行不順也。",
+      "困蒙之吝，獨遠實也。",
+      "童蒙之吉，順以巽也。",
+      "利用禦寇，上下順也。",
+    ],
+    gcEn: "Mang (indicates that in the case which it presupposes) there will be progress and success. I do not (go and) seek the youthful and inexperienced, but he comes and seeks me. When he shows (the sincerity that marks) the first recourse to divination, I instruct him. If he apply a second and third time, that is troublesome; and I do not instruct the troublesome. There will be advantage in being firm and correct.",
+    legge: {
+      leggeName: "Mang",
+      judgment: "Mang (indicates that in the case which it presupposes) there will be progress and success. I do not (go and) seek the youthful and inexperienced, but he comes and seeks me. When he shows (the sincerity that marks) the first recourse to divination, I instruct him. If he apply a second and third time, that is troublesome; and I do not instruct the troublesome. There will be advantage in being firm and correct.",
+      image: "(The trigram representing) a mountain, and beneath it that for a spring issuing forth form Mang. The superior man, in accordance with this, strives to be resolute in his conduct and nourishes his virtue.",
+      lines: [
+        "The first line, divided, (has respect to) the dispelling of ignorance. It will be advantageous to use punishment (for that purpose), and to remove the shackles (from the mind). But going on in that way (of punishment) will give occasion for regret.",
+        "The second line, undivided, (shows its subject) exercising forbearance with the ignorant, in which there will be good fortune; and admitting (even the goodness of women, which will also be fortunate. (He may be described also as) a son able to (sustain the burden of) his family.",
+        "The third line, divided, (seems to say) that one should not marry a woman whose emblem it might be, for that, when she sees a man of wealth, she will not keep her person from him, and in no wise will advantage come from her.",
+        "The fourth line, divided, (shows its subject as if) bound in chains of ignorance. There will be occasion for regret.",
+        "The fifth line, divided, shows its subject as a simple lad without experience. There will be good fortune.",
+        "In the topmost line, undivided, we see one smiting the ignorant (youth). But no advantage will come from doing him an injury. Advantage would come from warding off injury from him.",
+      ],
+    },
   },
   {
     u: "䷄",
@@ -141,6 +235,29 @@ export const GUA: Hexagram[] = [
       "Waiting amid food and drink. Perseverance brings good fortune.",
       "One falls into the pit. Three uninvited guests arrive. Honor them, and in the end there will be good fortune.",
     ],
+    gc: "有孚，光亨，貞吉。利涉大川。",
+    yaoXiao: [
+      "需于郊，不犯難行也。利用恆，無咎；未失常也。",
+      "需于沙，衍在中也。雖小有言，以終吉也。",
+      "需于泥，災在外也。自我致寇，敬慎不敗也。",
+      "需于血，順以聽也。",
+      "酒食貞吉，以中正也。",
+      "不速之客來，敬之終吉。雖不當位，未大失也。",
+    ],
+    gcEn: "Hsu intimates that, with the sincerity which is declared in it, there will be brilliant success. With firmness there will be good fortune; and it will be advantageous to cross the great stream.",
+    legge: {
+      leggeName: "Hsu",
+      judgment: "Hsu intimates that, with the sincerity which is declared in it, there will be brilliant success. With firmness there will be good fortune; and it will be advantageous to cross the great stream.",
+      image: "(The trigram for) clouds ascending over that for the sky forms Hsu. The superior man, in accordance with this, eats and drinks, feasts and enjoys himself (as if there were nothing else to employ him).",
+      lines: [
+        "The first line, undivided, shows its subject waiting in the distant border. It will be well for him constantly to maintain (the purpose thus shown), in which case there will be no error.",
+        "The second line, undivided, shows its subject waiting on the sand (of the mountain stream). He will (suffer) the small (injury of) being spoken (against), but in the end there will be good fortune.",
+        "The third line, undivided, shows its subject in the mud (close by the stream). He thereby invites the approach of injury.",
+        "The fourth line, divided, shows its subject waiting in (the place of) blood. But he will get out of the cavern.",
+        "The fifth line, undivided, shows its subject waiting amidst the appliances of a feast. Through his firmness and correctness there will be good fortune.",
+        "The topmost line, divided, shows its subject entered into the cavern. (But) there are three guests coming, without being urged, (to his help). If he receive them respectfully, there will be good fortune in the end.",
+      ],
+    },
   },
   {
     u: "䷅",
@@ -169,6 +286,29 @@ export const GUA: Hexagram[] = [
       "To contend before him brings supreme good fortune.",
       "Even if one is bestowed a leather belt of honor, by the end of a morning it will be stripped thrice.",
     ],
+    gc: "有孚，窒。惕中吉。終凶。利見大人，不利涉大川。",
+    yaoXiao: [
+      "不永所事，訟不可長也。雖有小言，其辯明也。",
+      "不克訟，歸而逋也。自下訟上，患至掇也。",
+      "食舊德，從上吉也。",
+      "復即命，渝安貞；不失也。",
+      "訟元吉，以中正也。",
+      "以訟受服，亦不足敬也。",
+    ],
+    gcEn: "Sung intimates how, though there is sincerity in one's contention, he will yet meet with opposition and obstruction; but if he cherish an apprehensive caution, there will be good fortune, while, if he must prosecute the contention to the (bitter) end, there will be evil. It will be advantageous to see the great man; it will not be advantageous to cross the great stream.",
+    legge: {
+      leggeName: "Sung",
+      judgment: "Sung intimates how, though there is sincerity in one's contention, he will yet meet with opposition and obstruction; but if he cherish an apprehensive caution, there will be good fortune, while, if he must prosecute the contention to the (bitter) end, there will be evil. It will be advantageous to see the great man; it will not be advantageous to cross the great stream.",
+      image: "(The trigram representing) heaven and (that representing) water, moving away from each other, form Sung. The superior man, in accordance with this, in the transaction of affairs takes good counsel about his first steps.",
+      lines: [
+        "The first line, divided, shows its subject not perpetuating the matter about which (the contention is). He will suffer the small (injury) of being spoken against, but the end will be fortunate.",
+        "The second line, undivided, shows its subject unequal to the contention. If he retire and keep concealed (where) the inhabitants of his city are (only) three hundred families, he will fall into no mistake.",
+        "The third line, divided, shows its subject keeping in the old place assigned for his support, and firmly correct. Perilous as the position is, there will be good fortune in the end. Should he perchance engage in the king's business, he will not (claim the merit of) achievement.",
+        "The fourth line, undivided, shows its subject unequal to the contention. He returns to (the study of Heaven's) ordinances, changes (his wish to contend), and rests in being firm and correct. There will be good fortune.",
+        "The fifth line, undivided, shows its subject contending;—and with great good fortune.",
+        "The topmost line, undivided, shows how its subject may have the leathern belt conferred on him (by the sovereign), and thrice it shall be taken from him in a morning.",
+      ],
+    },
   },
   {
     u: "䷆",
@@ -197,6 +337,29 @@ export const GUA: Hexagram[] = [
       "There is game in the field. It furthers one to catch it. No blame. Let the eldest lead the army. If the younger transports corpses, perseverance brings misfortune.",
       "The great prince issues commands, founds states, vests families with fiefs. Inferior people should not be employed.",
     ],
+    gc: "貞，丈人，吉無咎。",
+    yaoXiao: [
+      "師出以律，失律凶也。",
+      "在師中吉，承天寵也。王三錫命，懷萬邦也。",
+      "師或輿尸，大無功也。",
+      "左次無咎，未失常也。",
+      "長子帥師，以中行也。弟子輿尸，使不當也。",
+      "大君有命，以正功也。小人勿用，必亂邦也。",
+    ],
+    gcEn: "Sze indicates how, in the case which it supposes, with firmness and correctness, and (a leader of) age and experience, there will be good fortune and no error.",
+    legge: {
+      leggeName: "Sze",
+      judgment: "Sze indicates how, in the case which it supposes, with firmness and correctness, and (a leader of) age and experience, there will be good fortune and no error.",
+      image: "(The trigram representing) the earth and in the midst of it that representing water, form Sze. The superior man, in accordance with this, nourishes and educates the people, and collects (from among them) the multitudes (of the hosts).",
+      lines: [
+        "The first line, divided, shows the host going forth according to the rules (for such a movement). If these be not good, there will be evil.",
+        "The second line, undivided, shows (the leader) in the midst of the host. There will be good fortune and no error. The king has thrice conveyed to him the orders (of his favour).",
+        "The third line, divided, shows how the host may, possibly, have many inefficient leaders. There will be evil.",
+        "The fourth line, divided, shows the host in retreat. There is no error.",
+        "The fifth line, divided, shows birds in the fields, which it will be advantageous to seize (and destroy). In that case there will be no error. If the oldest son leads the host, and younger men (idly occupy offices assigned to them), however firm and correct he may be, there will be evil.",
+        "The topmost line, divided, shows the great ruler delivering his charges, (appointing some) to be rulers of states, and others to undertake the headship of clans; but small men should not be employed (in such positions).",
+      ],
+    },
   },
   {
     u: "䷇",
@@ -225,6 +388,29 @@ export const GUA: Hexagram[] = [
       "Manifestation of holding together. The king uses beaters on three sides only and forgoes the game that runs off in front. The citizens need no warning. Good fortune.",
       "Holding together without a head. Misfortune.",
     ],
+    gc: "吉。原筮元永貞，無咎。不寧方來，後夫凶。",
+    yaoXiao: [
+      "比之初六，有他吉也。",
+      "比之自內，不自失也。",
+      "比之匪人，不亦傷乎！",
+      "外比於賢，以從上也。",
+      "顯比之吉，位正中也。舍逆取順，失前禽也。邑人不誡，上使中也。",
+      "比之無首，無所終也。",
+    ],
+    gcEn: "Pi indicates that (under the conditions which it supposes) there is good fortune. But let (the principal party intended in it) re-examine himself, (as if) by divination, whether his virtue be great, unintermitting, and firm. If it be so, there will be no error. Those who have not rest will then come to him; and with those who are (too) late in coming it will be ill.",
+    legge: {
+      leggeName: "Pi",
+      judgment: "Pi indicates that (under the conditions which it supposes) there is good fortune. But let (the principal party intended in it) re-examine himself, (as if) by divination, whether his virtue be great, unintermitting, and firm. If it be so, there will be no error. Those who have not rest will then come to him; and with those who are (too) late in coming it will be ill.",
+      image: "(The trigram representing) the earth, and over it (that representing) water, form Pi. The ancient kings, in accordance with this, established the various states and maintained an affectionate relation to their princes.",
+      lines: [
+        "The first line, divided, shows its subject seeking by his sincerity to win the attachment of his object. There will be no error. Let (the breast) be full of sincerity as an earthenware vessel is of its contents, and it will in the end bring other advantages.",
+        "In the second line, divided, we see the movement towards union and attachment proceeding from the inward (mind). With firm correctness there will be good fortune.",
+        "In the third line, divided, we see its subject seeking for union with such as ought not to be associated with.",
+        "In the fourth line, divided, we see its subject seeking for union with the one beyond himself. With firm correctness there will be good fortune.",
+        "The fifth line, undivided, affords the most illustrious instance of seeking union and attachment. (We seem to see in it) the king urging his pursuit of the game (only) in three directions, and allowing the escape of all the animals before him, while the people of his towns do not warn one another (to prevent it). There will be good fortune.",
+        "In the topmost line, divided, we see one seeking union and attachment without having taken the first step (to such an end). There will be evil.",
+      ],
+    },
   },
   {
     u: "䷈",
@@ -253,6 +439,29 @@ export const GUA: Hexagram[] = [
       "If you are sincere and loyally attached, you are rich in your neighbor.",
       "The rain comes, there is rest. This is due to the lasting effect of character. Perseverance is dangerous for the woman. The moon is nearly full. If the superior man persists, misfortune comes.",
     ],
+    gc: "亨。密雲不雨，自我西郊。",
+    yaoXiao: [
+      "復自道，其義吉也。",
+      "牽復在中，亦不自失也。",
+      "夫妻反目，不能正室也。",
+      "有孚惕出，上合志也。",
+      "有孚攣如，不獨富也。",
+      "既雨既處，德積載也。君子征凶，有所疑也。",
+    ],
+    gcEn: "Hsiao Khu indicates that (under its conditions) there will be progress and success. (We see) dense clouds, but no rain coming from our borders in the west.",
+    legge: {
+      leggeName: "Hsiao Khu",
+      judgment: "Hsiao Khu indicates that (under its conditions) there will be progress and success. (We see) dense clouds, but no rain coming from our borders in the west.",
+      image: "(The trigram representing) the sky, and that representing wind moving above it, form Hsiao Khu. The superior man, in accordance with this, adorns the outward manifestation of his virtue.",
+      lines: [
+        "The first line, undivided, shows its subject returning and pursuing his own course. What mistake should he fall into? There will be good fortune.",
+        "The second line, undivided, shows its subject, by the attraction (of the former line), returning (to the proper course). There will be good fortune.",
+        "The third line, undivided, suggests the idea of a carriage, the strap beneath which has been removed, or of a husband and wife looking on each other with averted eyes.",
+        "The fourth line, divided, shows its subject possessed of sincerity. The danger of bloodshed is thereby averted, and his (ground for) apprehension dismissed. There will be no mistake.",
+        "The fifth line, undivided, shows its subject possessed of sincerity, and drawing others to unite with him. Rich in resources, he employs his neighbours (in the same cause with himself).",
+        "The topmost line, undivided, shows how the rain has fallen, and the (onward progress) is stayed;—(so) must we value the full accumulation of the virtue (represented by the upper trigram). But a wife (exercising restraint), however firm and correct she may be, is in a position of peril, (and like) the moon approaching to the full. If the superior man prosecute his measures (in such circumstances), there will be evil.",
+      ],
+    },
   },
   {
     u: "䷉",
@@ -281,6 +490,29 @@ export const GUA: Hexagram[] = [
       "Resolute conduct. Perseverance with awareness of danger.",
       "Look to your conduct and weigh the favorable signs. When everything is fulfilled, supreme good fortune comes.",
     ],
+    gc: "履虎尾，不咥人，亨。",
+    yaoXiao: [
+      "素履之往，獨行愿也。",
+      "幽人貞吉，中不自亂也。",
+      "眇能視；不足以有明也。跛能履；不足以與行也，咥人之凶；位不當也。武人為于大君；志剛也。",
+      "愬愬終吉，志行也。",
+      "夬履貞厲，位正當也。",
+      "元吉在上，大有慶也。",
+    ],
+    gcEn: "(Li suggests the idea of) one treading on the tail of a tiger, which does not bite him. There will be progress and success.",
+    legge: {
+      leggeName: "Li",
+      judgment: "(Li suggests the idea of) one treading on the tail of a tiger, which does not bite him. There will be progress and success.",
+      image: "(The trigram representing) the sky above, and below it (that representing the waters of) a marsh, form Li. The superior man, in accordance with this, discriminates between high and low, and gives settlement to the aims of the people.",
+      lines: [
+        "The first line, undivided, shows its subject treading his accustomed path. If he go forward, there will be no error.",
+        "The second line, undivided, shows its subject treading the path that is level and easy;—a quiet and solitary man, to whom, if he be firm and correct, there will be good fortune.",
+        "The third line, divided, shows a one-eyed man (who thinks he) can see; a lame man (who thinks he) can walk well; one who treads on the tail of a tiger and is bitten. (All this indicates) ill fortune. We have a (mere) bravo acting the part of a great ruler.",
+        "The fourth line, undivided, shows its subject treading on the tail of a tiger. He becomes full of apprehensive caution, and in the end there will be good fortune.",
+        "The fifth line, undivided, shows the resolute tread of its subject. Though he be firm and correct, there will be peril.",
+        "The sixth line, undivided, tells us to look at (the whole course) that is trodden, and examine the presage which that gives. If it be complete and without failure, there will be great good fortune.",
+      ],
+    },
   },
   {
     u: "䷊",
@@ -309,6 +541,29 @@ export const GUA: Hexagram[] = [
       "The sovereign gives his daughter in marriage. This brings blessing and supreme good fortune.",
       "The wall falls back into the moat. Use not the army. Make your commands known within your own town. Perseverance brings humiliation.",
     ],
+    gc: "小往大來，吉亨。",
+    yaoXiao: [
+      "拔茅征吉，志在外也。",
+      "包荒，得尚于中行，以光大也。",
+      "無往不復，天地際也。",
+      "翩翩不富，皆失實也。不戒以孚，中心願也。",
+      "以祉元吉，中以行愿也。",
+      "城復于隍，其命亂也。",
+    ],
+    gcEn: "In Thai (we see) the little gone and the great come. (It indicates that) there will be good fortune, with progress and success.",
+    legge: {
+      leggeName: "Thai",
+      judgment: "In Thai (we see) the little gone and the great come. (It indicates that) there will be good fortune, with progress and success.",
+      image: "(The trigrams for) heaven and earth in communication together form Thai. The (sage) sovereign, in harmony with this, fashions and completes (his regulations) after the courses of heaven and earth, and assists the application of the adaptations furnished by them,—in order to benefit the people.",
+      lines: [
+        "The first line, undivided, suggests the idea of grass pulled up, and bringing with it other stalks with whose roots it is connected. Advance (on the part of its subject) will be fortunate.",
+        "The second line, undivided, shows one who can bear with the uncultivated, will cross the Ho without a boat, does not forget the distant, and has no (selfish) friendships. Thus does he prove himself acting in accordance with the course of the due Mean.",
+        "The third line, undivided, shows that, while there is no state of peace that is not liable to be disturbed, and no departure (of evil men) so that they shall not return, yet when one is firm and correct, as he realises the distresses that may arise, he will commit no error. There is no occasion for sadness at the certainty (of such recurring changes); and in this mood the happiness (of the present) may be (long) enjoyed.",
+        "The fourth line, divided, shows its subject fluttering (down);—not relying on his own rich resources, but calling in his neighbours. (They all come) not as having received warning, but in the sincerity (of their hearts).",
+        "The fifth line, divided, reminds us of (king) Ti-yi's (rule about the) marriage of his younger sister. By such a course there is happiness and there will be great good fortune.",
+        "The sixth line, divided, shows us the city wall returned into the moat. It is not the time to use the army. (The subject of the line) may, indeed, announce his orders to the people of his own city; but however correct and firm he may be, he will have cause for regret.",
+      ],
+    },
   },
   {
     u: "䷋",
@@ -337,6 +592,29 @@ export const GUA: Hexagram[] = [
       "Standstill is giving way. Good fortune for the great man. 'What if it should fail? What if it should fail?' In this way he ties it to a cluster of mulberry shoots.",
       "The standstill comes to an end. First standstill, then good fortune.",
     ],
+    gc: "否之匪人，不利君子貞，大往小來。",
+    yaoXiao: [
+      "拔茅貞吉，志在君也。",
+      "大人否亨，不亂群也。",
+      "包羞，位不當也。",
+      "有命無咎，志行也。",
+      "大人之吉，位正當也。",
+      "否終則傾，何可長也。",
+    ],
+    gcEn: "In Phi there is the want of good understanding between the (different classes of) men, and its indication is unfavourable to the firm and correct course of the superior man. We see in it the great gone and the little come.",
+    legge: {
+      leggeName: "Phi",
+      judgment: "In Phi there is the want of good understanding between the (different classes of) men, and its indication is unfavourable to the firm and correct course of the superior man. We see in it the great gone and the little come.",
+      image: "(The trigrams of) heaven and earth, not in intercommunication, form Phi. The superior man, in accordance with this, restrains (the manifestation) of) his virtue, and avoids the calamities (that threaten him). There is no opportunity of conferring on him the glory of emolument.",
+      lines: [
+        "The first line, divided, suggests the idea of grass pulled up, and bringing with it other stalks with whose roots it is connected. With firm correctness (on the part of its subject), there will be good fortune and progress.",
+        "The second line, divided, shows its subject patient and obedient. To the small man (comporting himself so) there will be good fortune. If the great man (comport himself) as the distress and obstruction require, he will have success.",
+        "The third line, divided, shows its subject ashamed of the purpose folded (in his breast).",
+        "The fourth line, undivided, shows its subject acting in accordance with the ordination (of Heaven), and committing no error. His companions will come and share in his happiness.",
+        "In the fifth line, undivided, we see him who brings the distress and obstruction to a close,—the great man and fortunate. (But let him say), 'We may perish! We may perish!' (so shall the state of things become firm, as if) bound to a clump of bushy mulberry trees.",
+        "The sixth line, undivided, shows the overthrow (and removal of) the condition of distress and obstruction. Before this there was that condition. Hereafter there will be joy.",
+      ],
+    },
   },
   {
     u: "䷌",
@@ -365,6 +643,29 @@ export const GUA: Hexagram[] = [
       "Men bound in fellowship first weep and lament, but afterward they laugh. After great struggles they succeed in meeting.",
       "Fellowship with men in the meadow. No remorse.",
     ],
+    gc: "同人于野，亨。利涉大川，利君子貞。",
+    yaoXiao: [
+      "出門同人，又誰咎也。",
+      "同人于宗，吝道也。",
+      "伏戎于莽，敵剛也。三歲不興，安行也。",
+      "乘其墉，義弗克也，其吉，則困而反則也。",
+      "同人之先，以中直也。大師相遇，言相克也。",
+      "同人于郊，志未得也。",
+    ],
+    gcEn: "Thung Zan (or 'Union of men') appears here (as we find it) in the (remote districts of the) country, indicating progress and success. It will be advantageous to cross the great stream. It will be advantageous to maintain the firm correctness of the superior man.",
+    legge: {
+      leggeName: "Thung Zan",
+      judgment: "Thung Zan (or 'Union of men') appears here (as we find it) in the (remote districts of the) country, indicating progress and success. It will be advantageous to cross the great stream. It will be advantageous to maintain the firm correctness of the superior man.",
+      image: "(The trigrams for) heaven and fire form Thung Zan. The superior man, in accordance with this, distinguishes things according to their kinds and classes.",
+      lines: [
+        "The first line, undivided, (shows the representative of) the union of men just issuing from his gate. There will be no error.",
+        "The second line, divided, (shows the representative of) the union of men in relation with his kindred. There will be occasion for regret.",
+        "The third line, undivided, (shows its subject) with his arms hidden in the thick grass, and at the top of a high mound. (But) for three years he makes no demonstration.",
+        "The fourth line, undivided, (shows its subject) mounted on the city wall; but he does not proceed to make the attack (he contemplates). There will be good fortune.",
+        "In the fifth line, undivided, (the representative of) the union of men first wails and cries out, and then laughs. His great host conquers, and he (and the subject of the second line) meet together.",
+        "The topmost line, undivided, (shows the representative of) the union of men in the suburbs. There will be no occasion for repentance.",
+      ],
+    },
   },
   {
     u: "䷍",
@@ -393,6 +694,29 @@ export const GUA: Hexagram[] = [
       "He whose truth is accessible yet dignified has good fortune.",
       "He is blessed by heaven. Good fortune. Nothing that does not further.",
     ],
+    gc: "元亨。",
+    yaoXiao: [
+      "大有初九，無交害也。",
+      "大車以載，積中不敗也。",
+      "公用亨于天子，小人害也。",
+      "匪其彭，無咎；明辨晰也。",
+      "厥孚交如，信以發志也。威如之吉，易而無備也。",
+      "大有上吉，自天佑也。",
+    ],
+    gcEn: "Ta Yu indicates that, (under the circumstances which it implies), there will be great progress and success.",
+    legge: {
+      leggeName: "Ta Yu",
+      judgment: "Ta Yu indicates that, (under the circumstances which it implies), there will be great progress and success.",
+      image: "(The trigram for) heaven and (that of) fire above it form Ta Yu The superior man, in accordance with this, represses what is evil and gives distinction to what is good, in sympathy with the excellent Heaven-conferred (nature).",
+      lines: [
+        "In the first line, undivided, there is no approach to what is injurious, and there is no error. Let there be a realisation of the difficulty (and danger of the position), and there will be no error (to the end).",
+        "In the second line, undivided, we have a large waggon with its load. In whatever direction advance is made, there will be no error.",
+        "The third line, undivided, shows us a feudal prince presenting his offerings to the Son of Heaven. A small man would be unequal (to such a duty).",
+        "The fourth line, undivided, shows its subject keeping his great resources under restraint. There will be no error.",
+        "The fifth line, divided, shows the sincerity of its subject reciprocated by that of all the others (represented in the hexagram). Let him display a proper majesty, and there will be good fortune.",
+        "The topmost line, undivided, shows its subject with help accorded to him from Heaven. There will be good fortune, advantage in every respect.",
+      ],
+    },
   },
   {
     u: "䷎",
@@ -421,6 +745,29 @@ export const GUA: Hexagram[] = [
       "Not boasting of wealth before one's neighbor. It is favorable to attack with force. Nothing that would not further.",
       "Modesty that comes to expression. It is favorable to set armies marching to chastise one's own city and country.",
     ],
+    gc: "亨，君子有終。",
+    yaoXiao: [
+      "謙謙君子，卑以自牧也。",
+      "鳴謙貞吉，中心得也。",
+      "勞謙君子，萬民服也。",
+      "無不利，撝謙；不違則也。",
+      "利用侵伐，征不服也。",
+      "鳴謙，志未得也。可用行師，征邑國也。",
+    ],
+    gcEn: "Khien indicates progress and success. The superior man, (being humble as it implies), will have a (good) issue (to his undertakings).",
+    legge: {
+      leggeName: "Khien",
+      judgment: "Khien indicates progress and success. The superior man, (being humble as it implies), will have a (good) issue (to his undertakings).",
+      image: "(The trigram for) the earth and (that of) a mountain in the midst of it form Khien. The superior man, in accordance with this, diminishes what is excessive (in himself), and increases where there is any defect, bringing about an equality, according to the nature of the case, in his treatment (of himself and others).",
+      lines: [
+        "The first line, divided, shows us the superior man who adds humility to humility. (Even) the great stream may be crossed with this, and there will be good fortune.",
+        "The second line, divided, shows us humility that has made itself recognised. With firm correctness there will be good fortune.",
+        "The third line, undivided, shows the superior man of (acknowledged) merit. He will maintain his success to the end, and have good fortune.",
+        "The fourth line, divided, shows one, whose action would be in every way advantageous, stirring up (the more) his humility.",
+        "The fifth line, divided, shows one who, without being rich, is able to employ his neighbours. He may advantageously use the force of arms. All his movements will be advantageous.",
+        "The sixth line, divided, shows us humility that has made itself recognised. The subject of it will with advantage put his hosts in motion; but (he will only) punish his own towns and state.",
+      ],
+    },
   },
   {
     u: "䷏",
@@ -449,6 +796,29 @@ export const GUA: Hexagram[] = [
       "Persistently ill, yet does not die.",
       "Deluded enthusiasm. But if after completion one changes, there is no blame.",
     ],
+    gc: "利建侯，行師。",
+    yaoXiao: [
+      "初六鳴豫，志窮凶也。",
+      "不終日，貞吉；以中正也。",
+      "盱豫有悔，位不當也。",
+      "由豫，大有得；志大行也。",
+      "六五貞疾，乘剛也。恆不死，中未亡也。",
+      "冥豫在上，何可長也。",
+    ],
+    gcEn: "Yu indicates that, (in the state which it implies), feudal princes may be set up, and the hosts put in motion, with advantage.",
+    legge: {
+      leggeName: "Yu",
+      judgment: "Yu indicates that, (in the state which it implies), feudal princes may be set up, and the hosts put in motion, with advantage.",
+      image: "(The trigrams for) the earth and thunder issuing from it with its crashing noise form Yu. The ancient kings, in accordance with this, composed their music and did honour to virtue, presenting it especially and most grandly to God, when they associated with Him (at the service) their highest ancestor and their father.",
+      lines: [
+        "The first line, divided, shows its subject proclaiming his pleasure and satisfaction. There will be evil.",
+        "The second line, divided, shows one who is firm as a rock. (He sees a thing) without waiting till it has come to pass; with his firm correctness there will be good fortune.",
+        "The third line, divided, shows one looking up (for favours), while he indulges the feeling of pleasure and satisfaction. If he would understand!—If he be late in doing so, there will indeed be occasion for repentance.",
+        "The fourth line, undivided, shows him from whom the harmony and satisfaction come. Great is the success which he obtains. Let him not allow suspicions to enter his mind, and thus friends will gather around him.",
+        "The fifth line, divided, shows one with a chronic complaint, but who lives on without dying.",
+        "The topmost line, divided, shows its subject with darkened mind devoted to the pleasure and satisfaction (of the time); but if he change his course even when (it may be considered as) completed, there will be no error.",
+      ],
+    },
   },
   {
     u: "䷐",
@@ -477,6 +847,29 @@ export const GUA: Hexagram[] = [
       "Sincere in goodness — good fortune.",
       "He is bound and held fast, then released into following. The king makes offerings at the Western Mountain.",
     ],
+    gc: "元亨利貞，無咎。",
+    yaoXiao: [
+      "官有渝，從正吉也。出門交有功，不失也。",
+      "係小子，弗兼與也。",
+      "系丈夫，志舍下也。",
+      "隨有獲，其義凶也。有孚在道，明功也。",
+      "孚于嘉，吉；位正中也。",
+      "拘系之，上窮也。",
+    ],
+    gcEn: "Sui indicates that (under its conditions) there will be great progress and success. But it will be advantageous to be firm and correct. There will (then) be no error.",
+    legge: {
+      leggeName: "Sui",
+      judgment: "Sui indicates that (under its conditions) there will be great progress and success. But it will be advantageous to be firm and correct. There will (then) be no error.",
+      image: "(The trigram for the waters of) a marsh and (that for) thunder (hidden) in the midst of it form Sui. The superior man in accordance with this, when it is getting towards dark, enters (his house) and rests.",
+      lines: [
+        "The first line, undivided, shows us one changing the object of his pursuit; but if he be firm and correct, there will he good fortune. Going beyond (his own) gate to find associates, he will achieve merit.",
+        "The second line, divided, shows us one who cleaves to the little boy, and lets go the man of age and experience.",
+        "The third line, divided, shows us one who cleaves to the man of age and experience, and lets go. the little boy. Such following will get what it seeks; but it will be advantageous to adhere to what is firm and correct.",
+        "The fourth line, undivided, shows us one followed and obtaining (adherents). Though he be firm and correct, there will be evil. If he be sincere (however) in his course, and make that evident, into what error will he fall?",
+        "The fifth line, undivided, shows us (the ruler) sincere in (fostering all) that is excellent. There will be good fortune.",
+        "The topmost line, divided, shows us (that sincerity) firmly held and clung to, yea, and bound fast. (We see) the king with it presenting his offerings on the western mountain.",
+      ],
+    },
   },
   {
     u: "䷑",
@@ -505,6 +898,29 @@ export const GUA: Hexagram[] = [
       "Setting right what the father has spoiled; one meets with praise.",
       "He does not serve kings and princes; he sets his goals higher.",
     ],
+    gc: "元亨，利涉大川。先甲三日，後甲三日。",
+    yaoXiao: [
+      "幹父之蠱，意承考也。",
+      "幹母之蠱，得中道也。",
+      "幹父之蠱，終無咎也。",
+      "裕父之蠱，往未得也。",
+      "干父之蠱；承以德也。",
+      "不事王侯，志可則也。",
+    ],
+    gcEn: "Ku indicates great progress and success (to him who deals properly with the condition represented by it). There will be advantage in (efforts like that of) crossing the great stream. (He should weigh well, however, the events of) three days before the turning point, and those (to be done) three days after it.",
+    legge: {
+      leggeName: "Ku",
+      judgment: "Ku indicates great progress and success (to him who deals properly with the condition represented by it). There will be advantage in (efforts like that of) crossing the great stream. (He should weigh well, however, the events of) three days before the turning point, and those (to be done) three days after it.",
+      image: "(The trigram for) a mountain, and below it that for wind, form Ku. The superior man, in accordance with this, (addresses himself to) help the people and nourish his own virtue.",
+      lines: [
+        "The first line, divided, shows (a son) dealing with the troubles caused by his father. If he be an (able) son, the father will escape the blame of having erred. The position is perilous, but there will be good fortune in the end.",
+        "The second line, undivided, shows (a son) dealing with the troubles caused by his mother. He should not (carry) his firm correctness (to the utmost).",
+        "The third line, undivided, shows (a son) dealing with the troubles caused by his father. There may be some small occasion for repentance, but there will not be any great error.",
+        "The fourth line, divided, shows (a son) viewing indulgently the troubles caused by his father. If he go forward, he will find cause to regret it.",
+        "The fifth line, divided, shows (a son) dealing with the troubles caused by his father. He obtains the praise of using (the fit instrument for his work).",
+        "The sixth line, undivided, shows us one who does not serve either king or feudal lord, but in a lofty spirit prefers (to attend to) his own affairs.",
+      ],
+    },
   },
   {
     u: "䷒",
@@ -533,6 +949,29 @@ export const GUA: Hexagram[] = [
       "Wise approach, befitting a great ruler; good fortune.",
       "Approach with generosity of heart; good fortune and no blame.",
     ],
+    gc: "元，亨，利，貞。至于八月有凶。",
+    yaoXiao: [
+      "咸臨貞吉，志行正也。",
+      "咸臨，吉無不利；未順命也。",
+      "甘臨，位不當也。既憂之，咎不長也。",
+      "至臨無咎，位當也。",
+      "大君之宜，行中之謂也。",
+      "敦臨之吉，志在內也。",
+    ],
+    gcEn: "Lin (indicates that under the conditions supposed in it) there will be great progress and success, while it will be advantageous to be firmly correct. In the eighth month there will be evil.",
+    legge: {
+      leggeName: "Lin",
+      judgment: "Lin (indicates that under the conditions supposed in it) there will be great progress and success, while it will be advantageous to be firmly correct. In the eighth month there will be evil.",
+      image: "(The trigram for) the waters of a marsh and that for the earth above it form Lin. The superior man, in accordance with this, has his purposes of instruction that are inexhaustible, and nourishes and supports the people without limit.",
+      lines: [
+        "The first line, undivided, shows its subject advancing in company (with the subject of the second line). Through his firm correctness there will be good fortune.",
+        "The second line, undivided, shows its subject advancing in company (with the subject of the first line). There will be good fortune; (advancing) will be in every way advantageous.",
+        "The third line, divided, shows one well pleased (indeed) to advance, (but whose action) will be in no way advantageous. If he become anxious about it (however), there will be no error.",
+        "The fourth line, divided, shows one advancing in the highest mode. There will be no error.",
+        "The fifth line, divided, shows the advance of wisdom, such as befits the great ruler. There will be good fortune.",
+        "The sixth line, divided, shows the advance of honesty and generosity. There will be good fortune, and no error.",
+      ],
+    },
   },
   {
     u: "䷓",
@@ -561,6 +1000,29 @@ export const GUA: Hexagram[] = [
       "Contemplation of my own life; the noble one is without blame.",
       "Contemplation of his life; the noble one is without blame.",
     ],
+    gc: "盥而不薦，有孚顒若。",
+    yaoXiao: [
+      "初六童觀，小人道也。",
+      "窺觀女貞，亦可醜也。",
+      "觀我生，進退；未失道也。",
+      "觀國之光，尚賓也。",
+      "觀我生，觀民也。",
+      "觀其生，志未平也。",
+    ],
+    gcEn: "Kwan shows (how he whom it represents should be like) the worshipper who has washed his hands, but not (yet) presented his offerings;—with sincerity and an appearance of dignity (commanding reverent regard).",
+    legge: {
+      leggeName: "Kwan",
+      judgment: "Kwan shows (how he whom it represents should be like) the worshipper who has washed his hands, but not (yet) presented his offerings;—with sincerity and an appearance of dignity (commanding reverent regard).",
+      image: "(The trigram representing) the earth, and that for wind moving above it, form Kwan. The ancient kings, in accordance with this, examined the (different) regions (of the kingdom), to see the (ways of the) people, and set forth their instructions.",
+      lines: [
+        "The first line, divided, shows the looking of a lad;—not blamable in men of inferior rank, but matter for regret in superior men.",
+        "The second line, divided, shows one peeping out from a door. It would be advantageous if it were (merely) the firm correctness of a female.",
+        "The third line, divided, shows one looking at (the course of) his own life, to advance or recede (accordingly).",
+        "The fourth line, divided, shows one contemplating the glory of the kingdom. It will be advantageous for him, being such as he is, (to seek) to be a guest of the king.",
+        "The fifth line, undivided, shows its subject contemplating his own life(-course). A superior man, he will (thus) fall into no error.",
+        "The sixth line, undivided, shows its subject contemplating his character to see if it be indeed that of a superior man. He will not fall into error.",
+      ],
+    },
   },
   {
     u: "䷔",
@@ -589,6 +1051,29 @@ export const GUA: Hexagram[] = [
       "Biting on dried meat and finding yellow gold. Perseverance in awareness of danger — no blame.",
       "His neck is fastened in a wooden cangue so that his ears disappear; misfortune.",
     ],
+    gc: "亨。利用獄。",
+    yaoXiao: [
+      "屨校滅趾，不行也。",
+      "噬膚滅鼻，乘剛也。",
+      "遇毒，位不當也。",
+      "利艱貞吉，未光也。",
+      "貞厲無咎，得當也。",
+      "何校滅耳，聰不明也。",
+    ],
+    gcEn: "Shih Ho indicates successful progress (in the condition of things which it supposes). It will be advantageous to use legal constraints.",
+    legge: {
+      leggeName: "Shih Ho",
+      judgment: "Shih Ho indicates successful progress (in the condition of things which it supposes). It will be advantageous to use legal constraints.",
+      image: "(The trigrams representing) thunder and lightning form Shih Ho. The ancient kings, in accordance with this, framed their penalties with intelligence, and promulgated their laws.",
+      lines: [
+        "The first line, undivided, shows one with his feet in the stocks and deprived of his toes. There will be no error.",
+        "The second line, divided, shows one biting through the soft flesh, and (going on to) bite off the nose. There will be no error.",
+        "The third line, divided, shows one gnawing dried flesh, and meeting with what is disagreeable. There will be occasion for some small regret, but no (great) error.",
+        "The fourth line, undivided, shows one gnawing the flesh dried on the bone, and getting the pledges of money and arrows. It will be advantageous to him to realise the difficulty of his task and be firm,—in which case there will be good fortune.",
+        "The fifth line, divided, shows one gnawing at dried flesh, and finding the yellow gold. Let him be firm and correct, realising the peril (of his position). There will be no error.",
+        "The sixth line, undivided, shows one wearing the cangue, and deprived of his cars. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷕",
@@ -617,6 +1102,29 @@ export const GUA: Hexagram[] = [
       "Grace in hills and gardens. The roll of silk is meager and small; humiliation, but in the end good fortune.",
       "Simple grace without color — no blame.",
     ],
+    gc: "亨。小利有攸往。",
+    yaoXiao: [
+      "舍車而徒，義弗乘也。",
+      "賁其須，與上興也。",
+      "永貞之吉，終莫之陵也。",
+      "六四，當位疑也。匪寇婚媾，終無尤也。",
+      "六五之吉，有喜也。",
+      "白賁無咎，上得志也。",
+    ],
+    gcEn: "Pi indicates that there should be free course (in what it denotes). There will be little advantage (however) if it be allowed to advance (and take the lead).",
+    legge: {
+      leggeName: "Pi",
+      judgment: "Pi indicates that there should be free course (in what it denotes). There will be little advantage (however) if it be allowed to advance (and take the lead).",
+      image: "(The trigram representing) a mountain and that for fire under it form Pi. The superior man, in accordance with this, throws a brilliancy around his various processes of government, but does not dare (in a similar way) to decide cases of criminal litigation.",
+      lines: [
+        "The first line, undivided, shows one adorning (the way of) his feet. He can discard a carriage and walk on foot.",
+        "The second line, divided, shows one adorning his beard.",
+        "The third line, undivided, shows its subject with the appearance of being adorned and bedewed (with rich favours). But let him ever maintain his firm correctness, and there will be good fortune.",
+        "The fourth line, divided, shows one looking as if adorned, but only in white. As if (mounted on) a white horse, and furnished with wings, (he seeks union with the subject of the first line), while (the intervening third pursues), not as a robber, but intent on a matrimonial alliance.",
+        "The fifth line, divided, shows its subject adorned by (the occupants of) the heights and gardens. He bears his roll of silk, small and slight. He may appear stingy; but there will be good fortune in the end.",
+        "The sixth line, undivided, shows one with white as his (only) ornament. There will be no error.",
+      ],
+    },
   },
   {
     u: "䷖",
@@ -645,6 +1153,29 @@ export const GUA: Hexagram[] = [
       "A string of fish; favor comes through the court ladies. Everything acts to further.",
       "A large fruit uneaten. The noble one receives a carriage; the inferior person's hut is split apart.",
     ],
+    gc: "不利有攸往。",
+    yaoXiao: [
+      "剝床以足，以滅下也。",
+      "剝床以辨，未有與也。",
+      "剝之無咎，失上下也。",
+      "剝床以膚，切近災也。",
+      "以宮人寵，終無尤也。",
+      "君子得輿，民所載也。小人剝廬，終不可用也。",
+    ],
+    gcEn: "Po indicates that (in the state which it symbolises) it will not be advantageous to make a movement in any direction whatever.",
+    legge: {
+      leggeName: "Po",
+      judgment: "Po indicates that (in the state which it symbolises) it will not be advantageous to make a movement in any direction whatever.",
+      image: "(The trigrams representing) the earth, and (above it) that for a mountain, which adheres to the earth, form Po. Superiors, in accordance with this, seek to strengthen those below them, to secure the peace and stability of their own position.",
+      lines: [
+        "The first line, divided, shows one overturning the couch by injuring its legs. (The injury will go on to) the destruction of (all) firm correctness, and there will be evil.",
+        "The second line, divided, shows one overthrowing the couch by injuring its frame. (The injury will go on to) the destruction of (all) firm correctness, and there will be evil.",
+        "The third line, divided, shows its subject among the overthrowers; but there will be no error.",
+        "The fourth line, divided, shows its subject having overthrown the couch, and (going to injure) the skin (of him who lies on it). There will be evil.",
+        "The fifth line, divided, shows (its subject leading on the others like) a string of fishes, and (obtaining for them) the favour that lights on the inmates of the palace. There will be advantage in every way.",
+        "The topmost line, undivided, shows its subject (as) a great fruit which has not been eaten. The superior man finds (the people again) as a chariot carrying him. The small men (by their course) overthrow their own dwellings.",
+      ],
+    },
   },
   {
     u: "䷗",
@@ -673,6 +1204,29 @@ export const GUA: Hexagram[] = [
       "Noble-hearted return — no remorse.",
       "Missing the return brings misfortune, calamity, and disaster. Using armies ends in great defeat, extending to the ruler. For ten years one cannot mount an expedition.",
     ],
+    gc: "亨。出入無疾，朋來無咎。反復其道，七日來復，利有攸往。",
+    yaoXiao: [
+      "不遠之復，以修身也。",
+      "休復之吉，以下仁也。",
+      "頻復之厲，義無咎也。",
+      "中行獨復，以從道也。",
+      "敦復無悔，中以自考也。",
+      "迷復之凶，反君道也。",
+    ],
+    gcEn: "Fu indicates that there will be free course and progress (in what it denotes). (The subject of it) finds no one to distress him in his exits and entrances; friends come to him, and no error is committed . He will return and repeat his (proper) course. In seven days comes his return. There will be advantage in whatever direction movement is made.",
+    legge: {
+      leggeName: "Fu",
+      judgment: "Fu indicates that there will be free course and progress (in what it denotes). (The subject of it) finds no one to distress him in his exits and entrances; friends come to him, and no error is committed . He will return and repeat his (proper) course. In seven days comes his return. There will be advantage in whatever direction movement is made.",
+      image: "(The trigram representing) the earth and that for thunder in the midst of it form Fu. The ancient kings, in accordance with this, on the day of the (winter) solstice, shut the gates of the passes (from one state to another), so that the travelling merchants could not (then) pursue their journeys, nor the princes go on with the inspection of their states.",
+      lines: [
+        "The first line, undivided, shows its subject returning (from an error) of no great extent, which would not proceed to anything requiring repentance. There will be great good fortune.",
+        "The second line, divided, shows the admirable return (of its subject). There will be good fortune.",
+        "The third line, divided, shows one who has made repeated returns. The position is perilous, but there will be no error.",
+        "The fourth line, divided, shows its subject moving right in the centre (among those represented by the other divided lines), and yet returning alone (to his proper path).",
+        "The fifth line, divided, shows the noble return of its subject. There will be no ground for repentance.",
+        "The topmost line, divided, shows its subject all astray on the subject of returning. There will be evil. There will be calamities and errors. If with his views he put the hosts in motion, the end will be a great defeat, whose issues will extend to the ruler of the state. Even in ten years he will not be able to repair the disaster.",
+      ],
+    },
   },
   {
     u: "䷘",
@@ -701,6 +1255,29 @@ export const GUA: Hexagram[] = [
       "The illness of innocence: do not use medicine and there will be cause for joy.",
       "Innocent action still brings misadventure; nothing furthers.",
     ],
+    gc: "元亨，利貞。其匪正有眚，不利有攸往。",
+    yaoXiao: [
+      "无妄之往，得志也。",
+      "不耕獲，未富也。",
+      "行人得牛，邑人災也。",
+      "可貞無咎，固有之也。",
+      "无妄之藥，不可試也。",
+      "无妄之行，窮之災也。",
+    ],
+    gcEn: "Wu Wang indicates great progress and success, while there will be advantage in being firm and correct. If (its subject and his action) be not correct, he will fall into errors, and it will not be advantageous for him to move in any direction.",
+    legge: {
+      leggeName: "Wu Wang",
+      judgment: "Wu Wang indicates great progress and success, while there will be advantage in being firm and correct. If (its subject and his action) be not correct, he will fall into errors, and it will not be advantageous for him to move in any direction.",
+      image: "The thunder rolls all under the sky, and to (every)thing there is given (its nature), free from all insincerity. The ancient kings, in accordance with this, (made their regulations) in complete accordance with the seasons, thereby nourishing all things.",
+      lines: [
+        "The first line, undivided, shows its subject free from all insincerity. His advance will be accompanied with good fortune.",
+        "The second line, divided, shows one who reaps without having ploughed (that he might reap), and gathers the produce of his third year's fields without having cultivated them the first year for that end. To such a one there will be advantage in whatever direction he may move.",
+        "The third line, divided, shows calamity happening to one who is free from insincerity;—as in the case of an ox that has been tied up. A passer by finds it (and carries it off), while the people in the neighbourhood have the calamity (of being accused and. apprehended).",
+        "The fourth line, undivided, shows (a case) in which, if its subject can remain firm and correct, there will be no error.",
+        "The fifth line, undivided, shows one who is free from insincerity, and yet has fallen ill. Let him not use medicine, and he will have occasion for joy (in his recovery).",
+        "The topmost line, undivided, shows its subject free from insincerity, yet sure to fall into error, if he take action. (His action) will not be advantageous in any way.",
+      ],
+    },
   },
   {
     u: "䷙",
@@ -729,6 +1306,29 @@ export const GUA: Hexagram[] = [
       "The tusk of a gelded boar — good fortune.",
       "One attains the way of heaven — success.",
     ],
+    gc: "利貞，不家食吉，利涉大川。",
+    yaoXiao: [
+      "有厲利已，不犯災也。",
+      "輿說輹，中無尤也。",
+      "利有攸往，上合志也。",
+      "六四元吉，有喜也。",
+      "六五之吉，有慶也。",
+      "何天之衢，道大行也。",
+    ],
+    gcEn: "Under the conditions of Ta Khu it will be advantageous to be firm and correct. (If its subject do not seek to) enjoy his revenues in his own family (without taking service at court), there will be good fortune. It will be advantageous for him to cross the great stream.",
+    legge: {
+      leggeName: "Ta Khu",
+      judgment: "Under the conditions of Ta Khu it will be advantageous to be firm and correct. (If its subject do not seek to) enjoy his revenues in his own family (without taking service at court), there will be good fortune. It will be advantageous for him to cross the great stream.",
+      image: "(The trigram representing) a mountain, and in the midst of it that (representing) heaven, form Ta Khu. The superior man, in accordance with this, stores largely in his memory the words and deeds of former men, to subserve the accumulation of his virtue.",
+      lines: [
+        "The first line, undivided, shows its subject in a position of peril. It will be advantageous for him to stop his advance.",
+        "The second line, undivided, shows a carriage with the strap under it removed.",
+        "The third line, undivided, shows its subject urging his way with good horses. It will be advantageous for him to realise the difficulty (of his course), and to be firm and correct, exercising himself daily in his charioteering and methods of defence; then there will be advantage in whatever direction he may advance.",
+        "The fourth line, divided, shows the young bull, (and yet) having the piece of wood over his horns. There will be great good fortune.",
+        "The fifth line, divided, shows the teeth of a castrated hog. There will be good fortune.",
+        "The sixth line, undivided, shows its subject (as) in command of the firmament of heaven. There will be progress.",
+      ],
+    },
   },
   {
     u: "䷚",
@@ -757,6 +1357,29 @@ export const GUA: Hexagram[] = [
       "Deviating from the path; to remain persevering brings good fortune, but one should not cross the great water.",
       "The source of nourishment; awareness of danger brings good fortune. It furthers to cross the great water.",
     ],
+    gc: "貞吉。觀頤，自求口實。",
+    yaoXiao: [
+      "觀我朵頤，亦不足貴也。",
+      "六二征凶，行失類也。",
+      "十年勿用，道大悖也。",
+      "顛頤之吉，上施光也。",
+      "居貞之吉，順以從上也。",
+      "由頤厲吉，大有慶也。",
+    ],
+    gcEn: "I indicates that with firm correctness there will be good fortune (in what is denoted by it). We must look at what we are seeking to nourish, and by the exercise of our thoughts seek for the proper aliment.",
+    legge: {
+      leggeName: "I",
+      judgment: "I indicates that with firm correctness there will be good fortune (in what is denoted by it). We must look at what we are seeking to nourish, and by the exercise of our thoughts seek for the proper aliment.",
+      image: "(The trigram representing) a mountain and under it that for thunder form I. The superior man, in accordance with this, (enjoins) watchfulness over our words, and the temperate regulation of our eating and drinking.",
+      lines: [
+        "The first line, undivided, (seems to be thus addressed), 'You leave your efficacious tortoise, and look at me till your lower jaw hangs down.' There will be evil.",
+        "The second line, divided, shows one looking downwards for nourishment, which is contrary to what is proper; or seeking it from the height (above), advance towards which will lead to evil.",
+        "The third line, divided, shows one acting contrary to the method of nourishing. However firm he may be, there will be evil. For ten years let him not take any action, (for) it will not be in any way advantageous.",
+        "The fourth line, divided, shows one looking downwards for (the power to) nourish. There will be good fortune. Looking with a tiger's downward unwavering glare, and with his desire that impels him to spring after spring, he will fall into no error.",
+        "The fifth line, divided, shows one acting contrary to what is regular and proper; but if he abide in firmness, there will be good fortune. He should not, (however, try to) cross the great stream.",
+        "The sixth line, undivided, shows him from whom comes the nourishing. His position is perilous, but there will be good fortune. It will be advantageous to cross the great stream.",
+      ],
+    },
   },
   {
     u: "䷛",
@@ -785,6 +1408,29 @@ export const GUA: Hexagram[] = [
       "A dry poplar puts forth flowers; an older woman takes a young husband. No blame, no praise.",
       "One must wade through the water until it flows over one's head; misfortune, but no blame.",
     ],
+    gc: "棟橈，利有攸往，亨。",
+    yaoXiao: [
+      "藉用白茅，柔在下也。",
+      "老夫女妻，過以相與也。",
+      "棟橈之凶，不可以有輔也。",
+      "棟隆之吉，不橈乎下也。",
+      "枯楊生華，何可久也。老婦士夫，亦可醜也。",
+      "過涉之凶，不可咎也。",
+    ],
+    gcEn: "Ta Kwo suggests to us a beam that is weak. There will be advantage in moving (under its conditions) in any direction whatever; there will be success.",
+    legge: {
+      leggeName: "Ta Kwo",
+      judgment: "Ta Kwo suggests to us a beam that is weak. There will be advantage in moving (under its conditions) in any direction whatever; there will be success.",
+      image: "(The trigram representing) trees hidden beneath that for the waters of a marsh forms Ta Kwo. The superior man, in accordance with this, stands up alone and has no fear, and keeps retired from the world without regret.",
+      lines: [
+        "The first line, divided, shows one placing mats of the white mao grass under things set on the ground. There will be no error.",
+        "The second line, undivided, shows a decayed willow producing shoots, or an old husband in possession of his young wife. There will be advantage in every way.",
+        "The third line, undivided, shows a beam that is weak. There will be evil.",
+        "The fourth line, undivided, shows a beam curving upwards. There will be good fortune. If (the subject of it) looks for other (help but that of line one), there will be cause for regret.",
+        "The fifth line, undivided, shows a decayed willow producing flowers, or an old wife in possession of her young husband. There will be occasion neither for blame nor for praise.",
+        "The topmost line, divided, shows its subject with extraordinary (boldness) wading through a stream, till the water hides the crown of his head. There will be evil, but no ground for blame.",
+      ],
+    },
   },
   {
     u: "䷜",
@@ -813,6 +1459,29 @@ export const GUA: Hexagram[] = [
       "The abyss does not overflow; it only fills to the rim — no blame.",
       "Bound with cords and ropes, shut in among thorn-hedged prison walls. For three years one cannot find the way — misfortune.",
     ],
+    gc: "習坎，有孚，維心亨，行有尚。",
+    yaoXiao: [
+      "習坎入坎，失道凶也。",
+      "求小得，未出中也。",
+      "來之坎坎，終無功也。",
+      "樽酒簋貳，剛柔際也。",
+      "坎不盈，中未大也。",
+      "上六失道，凶三歲也。",
+    ],
+    gcEn: "Khan, here repeated, shows the possession of sincerity, through which the mind is penetrating. Action (in accordance with this) will be of high value.",
+    legge: {
+      leggeName: "Khan",
+      judgment: "Khan, here repeated, shows the possession of sincerity, through which the mind is penetrating. Action (in accordance with this) will be of high value.",
+      image: "(The representation of) water flowing on continuously forms the repeated Khan. The superior man, in accordance with this, maintains constantly the virtue (of his heart) and (the integrity of) his conduct, and practises the business of instruction.",
+      lines: [
+        "The first line, divided, shows its subject in the double defile, and (yet) entering a cavern within it. There will be evil.",
+        "The second line, undivided, shows its subject in all the peril of the defile. He will, however, get a little (of the deliverance) that he seeks.",
+        "The third line, divided, shows its subject, whether he comes or goes ( =descends or ascends), confronted by a defile. All is peril to him and unrest. (His endeavours) will lead him into the cavern of the pit. There should be no action (in such a case).",
+        "The fourth line, divided, shows its subject (at a feast), with (simply) a bottle of spirits, and a subsidiary basket of rice, while (the cups and bowls) are (only) of earthenware. He introduces his important lessons (as his ruler's) intelligence admits. There will in the end be no error.",
+        "The fifth line, undivided, shows the water of the defile not yet full, (so that it might flow away); but order will (soon) be brought about. There will be no error.",
+        "The topmost line, divided, shows its subject bound with cords of three strands or two strands, and placed in the thicket of thorns. But in three years he does not learn the course for him to pursue. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷝",
@@ -841,6 +1510,29 @@ export const GUA: Hexagram[] = [
       "Tears flow in floods, sighing and lamenting — good fortune.",
       "The king uses him to march forth and punish. It is best to kill the leaders and capture the followers — no blame.",
     ],
+    gc: "利貞，亨。畜牝牛，吉。",
+    yaoXiao: [
+      "履錯之敬，以辟咎也。",
+      "黃離元吉，得中道也。",
+      "日昃之離，何可久也。",
+      "突如其來如，無所容也。",
+      "六五之吉，離王公也。",
+      "王用出征，以正邦也。",
+    ],
+    gcEn: "Li indicates that, (in regard to what it denotes), it will be advantageous to be firm and correct, and that thus there will be free course and success. Let (its subject) also nourish (a docility like that of) the cow, and there will be good fortune.",
+    legge: {
+      leggeName: "Li",
+      judgment: "Li indicates that, (in regard to what it denotes), it will be advantageous to be firm and correct, and that thus there will be free course and success. Let (its subject) also nourish (a docility like that of) the cow, and there will be good fortune.",
+      image: "(The trigram for) brightness, repeated, forms Li. The great man, in accordance with this, cultivates more and more his brilliant (virtue), and diffuses its brightness over the four quarters (of the land).",
+      lines: [
+        "The first line, undivided, shows one ready to move with confused steps. But he treads at the same time reverently, and there will be no mistake.",
+        "The second line, divided, shows its subject in his place in yellow. There will be great good fortune.",
+        "The third line, undivided, shows its subject in a position like that of the declining sun. Instead of playing on his instrument of earthenware, and singing to it, he utters the groans of an old man of eighty. There will be evil.",
+        "The fourth line, undivided, shows the manner of its subject's coming. How abrupt it is, as with fire, with death, to be rejected (by all)!",
+        "The fifth line, divided, shows its subject as one with tears flowing in torrents, and groaning in sorrow. There will be good fortune.",
+        "The topmost line, undivided, shows the king employing its subject in his punitive expeditions. Achieving admirable (merit), he breaks (only) the chiefs (of the rebels). Where his prisoners were not their associates, he does not punish. There will be no error.",
+      ],
+    },
   },
   {
     u: "䷞",
@@ -869,6 +1561,29 @@ export const GUA: Hexagram[] = [
       "Influence in the back of the neck — no remorse.",
       "Influence in the jaws, cheeks, and tongue.",
     ],
+    gc: "咸，亨，利貞，取女吉。",
+    yaoXiao: [
+      "咸其拇，志在外也。",
+      "雖凶居吉，順不害也。",
+      "咸其股，亦不處也。志在隨人，所執下也。",
+      "貞吉悔亡，未感害也。憧憧往來，未光大也。",
+      "咸其脢，志末也。",
+      "咸其輔頰舌，滕口說也。",
+    ],
+    gcEn: "Hsien indicates that, (on the fulfilment of the conditions implied in it), there will be free course and success. Its advantageousness will depend on the being firm and correct, (as) in marrying a young lady. There will be good fortune.",
+    legge: {
+      leggeName: "Hsien",
+      judgment: "Hsien indicates that, (on the fulfilment of the conditions implied in it), there will be free course and success. Its advantageousness will depend on the being firm and correct, (as) in marrying a young lady. There will be good fortune.",
+      image: "(The trigram representing) a mountain and above it that for (the waters of) a marsh form Hsien. The superior man, in accordance with this, keeps his mind free from pre-occupation, and open to receive (the influences of) others.",
+      lines: [
+        "The first line, divided, shows one moving his great toes.",
+        "The second line, divided, shows one moving the calves of his leg. There will be evil. If he abide (quiet in his place), there will be good fortune.",
+        "The third line, undivided, shows one moving his thighs, and keeping close hold of those whom he follows. Going forward (in this way) will cause regret.",
+        "The fourth line, undivided, shows that firm correctness which will lead to good fortune, and prevent all occasion for repentance. If its subject be unsettled in his movements, (only) his friends will follow his purpose.",
+        "The fifth line, undivided, shows one moving the flesh along the spine above the heart. There will be no occasion for repentance.",
+        "The sixth line, divided, shows one moving his jaws and tongue.",
+      ],
+    },
   },
   {
     u: "䷟",
@@ -897,6 +1612,29 @@ export const GUA: Hexagram[] = [
       "Giving duration to one's character through perseverance: good fortune for a woman, misfortune for a man.",
       "Restlessness as an enduring condition brings misfortune.",
     ],
+    gc: "亨，無咎，利貞，利有攸往。",
+    yaoXiao: [
+      "浚恆之凶，始求深也。",
+      "九二悔亡，能久中也。",
+      "不恆其德，無所容也。",
+      "久非其位，安得禽也。",
+      "婦人貞吉，從一而終也。夫子制義，從婦凶也。",
+      "振恆在上，大無功也。",
+    ],
+    gcEn: "Hang indicates successful progress and no error (in what it denotes). But the advantage will come from being firm and correct; and movement in any direction whatever will be advantageous.",
+    legge: {
+      leggeName: "Hang",
+      judgment: "Hang indicates successful progress and no error (in what it denotes). But the advantage will come from being firm and correct; and movement in any direction whatever will be advantageous.",
+      image: "(The trigram representing) thunder and that for wind form Hang. The superior man, in accordance with this, stands firm, and does not change his method (of operation).",
+      lines: [
+        "The first line, divided, shows its subject deeply (desirous) of long continuance. Even with firm correctness there will be evil; there will be no advantage in any way.",
+        "The second line, undivided, shows all occasion for repentance disappearing.",
+        "The third line, undivided, shows one who does not continuously maintain his virtue. There are those who will impute this to him as a disgrace. However firm he may be, there will be ground for regret.",
+        "The fourth line, undivided, shows a field where there is no game.",
+        "The fifth line, divided, shows its subject continuously maintaining the virtue indicated by it. In a wife this will be fortunate; in a husband, evil.",
+        "The topmost line, divided, shows its subject exciting himself to long continuance. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷠",
@@ -925,6 +1663,29 @@ export const GUA: Hexagram[] = [
       "Admirable retreat — perseverance brings good fortune.",
       "Retreat in abundance, with no direction unfavorable.",
     ],
+    gc: "亨，小利貞。",
+    yaoXiao: [
+      "遯尾之厲，不往何災也。",
+      "執用黃牛，固志也。",
+      "係遯之厲，有疾憊也。畜臣妾吉，不可大事也。",
+      "君子好遯，小人否也。",
+      "嘉遯貞吉，以正志也。",
+      "肥遯，無不利；無所疑也。",
+    ],
+    gcEn: "Thun indicates successful progress (in its circumstances). To a small extent it will (still) be advantageous to be firm and correct.",
+    legge: {
+      leggeName: "Thun",
+      judgment: "Thun indicates successful progress (in its circumstances). To a small extent it will (still) be advantageous to be firm and correct.",
+      image: "(The trigram representing) the sky and below it that for a mountain form Thun. The superior man, in accordance with this, keeps small men at a distance, not by showing that he hates them, but by his own dignified gravity.",
+      lines: [
+        "The first line, divided, shows a retiring tail. The position is perilous. No movement in any direction should be made.",
+        "The second line, divided, shows its subject holding (his purpose) fast as if by a (thong made from the) hide of a yellow ox, which cannot be broken.",
+        "The third line, undivided, shows one retiring but bound,—to his distress and peril. (If he were to deal with his binders as in) nourishing a servant or concubine, it would be fortunate for him.",
+        "The fourth line, undivided, shows its subject retiring notwithstanding his likings. In a superior man this will lead to good fortune; a small man cannot attain to this.",
+        "The fifth line, undivided, shows its subject retiring in an admirable way. With firm correctness there will be good fortune.",
+        "The sixth line, undivided, shows its subject retiring in a noble way. It will be advantageous in every respect.",
+      ],
+    },
   },
   {
     u: "䷡",
@@ -953,6 +1714,29 @@ export const GUA: Hexagram[] = [
       "Losing the ram with ease — no remorse.",
       "A ram butts a hedge and can neither retreat nor advance. Nothing is favorable; hardship brings good fortune.",
     ],
+    gc: "利貞。",
+    yaoXiao: [
+      "壯于趾，其孚窮也。",
+      "九二貞吉，以中也。",
+      "小人用壯，君子罔也。",
+      "藩決不羸，尚往也。",
+      "喪羊于易，位不當也。",
+      "不能退，不能遂，不祥也。艱則吉，咎不長也。",
+    ],
+    gcEn: "Ta Kwang indicates that (under the conditions which it symbolises) it will be advantageous to be firm and correct.",
+    legge: {
+      leggeName: "Ta Kwang",
+      judgment: "Ta Kwang indicates that (under the conditions which it symbolises) it will be advantageous to be firm and correct.",
+      image: "(The trigram representing) heaven and above it that for thunder form Ta Kwang. The superior man, in accordance with this, does not take a step which is not according to propriety.",
+      lines: [
+        "The first line, undivided, shows its subject manifesting his strength in his toes. But advance will lead to evil,—most certainly.",
+        "The second line, undivided, shows that with firm correctness there will be good fortune.",
+        "The third line, undivided, shows, in the case of a small man, one using all his strength; and in the case of a superior man, one whose rule is not to do so. Even with firm correctness the position would be perilous. (The exercise of strength in it might be compared to the case of) a ram butting against a fence, and getting his horns entangled.",
+        "The fourth line, undivided, shows (a case in which) firm correctness leads to good fortune, and occasion for repentance disappears. (We see) the fence opened without the horns being entangled. The strength is like that in the wheel-spokes of a large waggon.",
+        "The fifth line, divided, shows one who loses his ram(-like strength) in the ease of his position. (But) there will be no occasion for repentance.",
+        "The sixth line, divided, shows (one who may be compared to) the ram butting against the fence, and unable either to retreat, or to advance as he would fain do. There will not be advantage in any respect; but if he realise the difficulty (of his position), there will be good fortune.",
+      ],
+    },
   },
   {
     u: "䷢",
@@ -981,6 +1765,29 @@ export const GUA: Hexagram[] = [
       "Remorse vanishes. Do not worry about gain or loss; going forward is fortunate, nothing unfavorable.",
       "Advancing with horns — using force to discipline one's own domain is perilous but ends well. No blame, yet perseverance brings humiliation.",
     ],
+    gc: "康侯用錫馬蕃庶，晝日三接。",
+    yaoXiao: [
+      "晉如，摧如；獨行正也。裕無咎；未受命也。",
+      "受玆介福，以中正也。",
+      "眾允之，志上行也。",
+      "碩鼠貞厲，位不當也。",
+      "失得勿恤，往有慶也。",
+      "維用伐邑，道未光也。",
+    ],
+    gcEn: "In Zin we see a prince who secures the tranquillity (of the people) presented on that account with numerous horses (by the king), and three times in a day received at interviews.",
+    legge: {
+      leggeName: "Zin",
+      judgment: "In Zin we see a prince who secures the tranquillity (of the people) presented on that account with numerous horses (by the king), and three times in a day received at interviews.",
+      image: "(The trigram representing) the earth and that for the bright (sun) coming forth above it form Zin. The superior man, according to this, gives himself to make more brilliant his bright virtue.",
+      lines: [
+        "The first line, divided, shows one wishing to advance, and (at the same time) kept back. Let him be firm and correct, and there will be good fortune. If trust be not reposed in him, let him maintain a large and generous mind, and there will be no error.",
+        "The second line, divided, shows its subject with the appearance of advancing, and yet of being sorrowful. If he be firm and correct, there will be good fortune. He will receive this great blessing from his grandmother.",
+        "The third line, divided, shows its subject trusted by all (around him). All occasion for repentance will disappear.",
+        "The fourth line, undivided, shows its subject with the appearance of advancing, but like a marmot. However firm and correct he may be, the position is one of peril.",
+        "The fifth line, divided, shows how all occasion for repentance disappears (from its subject). (But) let him not concern himself about whether he shall fail or succeed. To advance will be fortunate, and in every way advantageous.",
+        "The topmost line, undivided, shows one advancing his horns. But he only uses them to punish the (rebellious people of his own) city. The position is perilous, but there will be good fortune. (Yet) however firm and correct he may be, there will be occasion for regret.",
+      ],
+    },
   },
   {
     u: "䷣",
@@ -1009,6 +1816,29 @@ export const GUA: Hexagram[] = [
       "The darkening of the light as with Prince Ji — perseverance is favorable.",
       "Not light but darkness. First ascending to heaven, then plunging into the earth.",
     ],
+    gc: "利艱貞。",
+    yaoXiao: [
+      "君子于行，義不食也。",
+      "六二之吉，順以則也。",
+      "南狩之志，乃大得也。",
+      "入于左腹，獲心意也。",
+      "箕子之貞，明不可息也。",
+      "初登于天，照四國也。後入于地，失則也。",
+    ],
+    gcEn: "Ming I indicates that (in the circumstances which it denotes) it will be advantageous to realise the difficulty (of the position), and maintain firm correctness.",
+    legge: {
+      leggeName: "Ming I",
+      judgment: "Ming I indicates that (in the circumstances which it denotes) it will be advantageous to realise the difficulty (of the position), and maintain firm correctness.",
+      image: "(The trigram representing) the earth and that for the bright (sun) entering within it form Ming I. The superior man, in accordance with this, conducts his management of men;—he shows his intelligence by keeping it obscured.",
+      lines: [
+        "The first line, undivided, shows its subject, (in the condition indicated by) Ming I, flying, but with drooping wings. When the superior man (is revolving) his going away, he may be for three days without eating. Wherever he goes, the people there may speak (derisively of him).",
+        "The second line, divided, shows its subject, (in the condition indicated by) Ming I, wounded in the left thigh. He saves himself by the strength of a (swift) horse; and is fortunate.",
+        "The third line, undivided, shows its subject, (in the condition indicated by) Ming I, hunting in the south, and taking the great chief (of the darkness). He should not be eager to make (all) correct (at once).",
+        "The fourth line, divided, shows its subject (just) entered into the left side of the belly (of the dark land). (But) he is able to carry out the mind appropriate (in the condition indicated by) Ming I, quitting the gate and courtyard (of the lord of darkness).",
+        "The fifth line, divided, shows how the count of Ki fulfilled the condition indicated by Ming I. It will be advantageous to be firm and correct.",
+        "The sixth line, divided, shows the case where there is no light, but (only) obscurity. (Its subject) had at first ascended to (the top of) the sky; his future shall be to go into the earth.",
+      ],
+    },
   },
   {
     u: "䷤",
@@ -1037,6 +1867,29 @@ export const GUA: Hexagram[] = [
       "The king approaches his household. Do not worry; good fortune.",
       "Sincerity and dignity bring good fortune in the end.",
     ],
+    gc: "利女貞。",
+    yaoXiao: [
+      "閑有家，志未變也。",
+      "六二之吉，順以巽也。",
+      "家人嗃嗃，未失也；婦子嘻嘻，失家節也。",
+      "富家大吉，順在位也。",
+      "王假有家，交相愛也。",
+      "威如之吉，反身之謂也。",
+    ],
+    gcEn: "For (the realisation of what is taught in) Kia Zan, (or for the regulation of the family), what is most advantageous is that the wife be firm and correct.",
+    legge: {
+      leggeName: "Kia Zan",
+      judgment: "For (the realisation of what is taught in) Kia Zan, (or for the regulation of the family), what is most advantageous is that the wife be firm and correct.",
+      image: "(The trigram representing) fire, and that for wind coming forth from it, form Kia Zan. The superior man, in accordance with this, orders his words according to (the truth of) things, and his conduct so that it is uniformly consistent.",
+      lines: [
+        "The first line, undivided, shows its subject establishing restrictive regulations in his household Occasion for repentance will disappear.",
+        "The second line, divided, shows its subject taking nothing on herself, but in her central place attending to the preparation of the food. Through her firm correctness there will be good fortune.",
+        "The third line, undivided, shows its subject (treating) the members of the household with stern severity. There will be occasion for repentance, there will be peril, (but) there will (also) be good fortune. If the wife and children were to be smirking and chattering, in the end there would be occasion for regret.",
+        "The fourth line, divided, shows its subject enriching the family. There will be great good fortune.",
+        "The fifth line, undivided, shows the influence of the king extending to his family. There need be no anxiety; there will be good fortune.",
+        "The topmost line, undivided, shows its subject possessed of sincerity and arrayed in majesty. In the end there will be good fortune.",
+      ],
+    },
   },
   {
     u: "䷥",
@@ -1065,6 +1918,29 @@ export const GUA: Hexagram[] = [
       "Remorse vanishes. The kinsman bites through the wrapping. Going forward, what blame could there be?",
       "Isolated in opposition, seeing a pig covered in mud, a cartload of ghosts. First drawing the bow, then lowering it — not enemies but marriage partners. Going forth and meeting rain brings good fortune.",
     ],
+    gc: "小事吉。",
+    yaoXiao: [
+      "見惡人，以辟咎也。",
+      "遇主于巷，未失道也。",
+      "見輿曳，位不當也。無初有終，遇剛也。",
+      "交孚無咎，志行也。",
+      "厥宗噬膚，往有慶也。",
+      "遇雨之吉，群疑亡也。",
+    ],
+    gcEn: "Khwei indicates that, (notwithstanding the condition of things which it denotes), in small matters there will (still) be good success.",
+    legge: {
+      leggeName: "Khwei",
+      judgment: "Khwei indicates that, (notwithstanding the condition of things which it denotes), in small matters there will (still) be good success.",
+      image: "(The trigram representing) fire above, and that for (the waters of) a marsh below, form Khwei. The superior man, in accordance with this, where there is a general agreement, yet admits diversity.",
+      lines: [
+        "The first line, undivided, shows that (to its subject) occasion for repentance will disappear. He has lost his horses, but let him not seek for them;—they will return of themselves. Should he meet with bad men, he will not err (in communicating with them).",
+        "The second line, undivided, shows its subject happening to meet with his lord in a bye-passage. There will be no error.",
+        "In the third line, divided, we see one whose carriage is dragged back, while the oxen in it are pushed back, and he is himself subjected to the shaving of his head and the cutting off of his nose. There is no good beginning, but there will be a good end.",
+        "The fourth line, undivided, shows its subject solitary amidst the (prevailing) disunion. (But) he meets with the good man (represented by the first line), and they blend their sincere desires together. The position is one of peril, but there will be no mistake.",
+        "The fifth line, divided, shows that (to its subject) occasion for repentance will disappear. With his relative (and minister he unites closely and readily) as if he were biting through a piece of skin. When he goes forward (with this help), what error can there be?",
+        "The topmost line, undivided, shows its subject solitary amidst the (prevailing) disunion. (In the subject of the third line, he seems to) see a pig bearing on its back a load of mud, (or fancies) there is a carriage full of ghosts. He first bends his bow against him, and afterwards unbends it, (for he discovers) that he is not an assailant to injure, but a near relative. Going forward, he shall meet with (genial) rain, and there will be good fortune.",
+      ],
+    },
   },
   {
     u: "䷦",
@@ -1093,6 +1969,29 @@ export const GUA: Hexagram[] = [
       "In the midst of great obstruction, friends come.",
       "Going leads to obstruction; returning brings abundance and good fortune. It is favorable to see a great person.",
     ],
+    gc: "利西南，不利東北；利見大人，貞吉。",
+    yaoXiao: [
+      "往蹇來譽，宜待也。",
+      "王臣蹇蹇，終無尤也。",
+      "往蹇來反，內喜之也。",
+      "往蹇來連，當位實也。",
+      "大蹇朋來，以中節也。",
+      "往蹇來碩，志在內也。利見大人，以從貴也。",
+    ],
+    gcEn: "In (the state indicated by) Kien advantage will be found in the south-west, and the contrary in the north-east. It will be advantageous (also) to meet with the great man. (In these circumstances), with firmness and correctness, there will be good fortune.",
+    legge: {
+      leggeName: "Kien",
+      judgment: "In (the state indicated by) Kien advantage will be found in the south-west, and the contrary in the north-east. It will be advantageous (also) to meet with the great man. (In these circumstances), with firmness and correctness, there will be good fortune.",
+      image: "(The trigram representing) a mountain, and above it that for water, form Kien. The superior man, in accordance with this, turns round (and examines) himself, and cultivates his virtue.",
+      lines: [
+        "From the first line, divided, we learn that advance (on the part of its subject) will lead to (greater) difficulties, while remaining stationary will afford ground for praise.",
+        "The second line, divided, shows the minister of the king struggling with difficulty on difficulty, and not with a view to his own advantage.",
+        "The third line, undivided, shows its subject advancing, (but only) to (greater) difficulties. He remains stationary, and returns (to his former associates).",
+        "The fourth line, divided, shows its subject advancing, (but only) to (greater) difficulties. He remains stationary, and unites (with the subject of the line above).",
+        "The fifth line, undivided, shows its subject struggling with the greatest difficulties, while friends are coming to help him.",
+        "The topmost line, divided, shows its subject going forward, (only to increase) the difficulties, while his remaining stationary will be (productive of) great (merit). There will be good fortune, and it will be advantageous to meet with the great man.",
+      ],
+    },
   },
   {
     u: "䷧",
@@ -1121,6 +2020,29 @@ export const GUA: Hexagram[] = [
       "The noble one achieves deliverance. Good fortune. He demonstrates sincerity to the petty.",
       "The prince shoots a hawk from atop a high wall and hits it. Nothing unfavorable.",
     ],
+    gc: "利西南，無所往，其來復吉。有攸往，夙吉。",
+    yaoXiao: [
+      "剛柔之際，義無咎也。",
+      "九二貞吉，得中道也。",
+      "負且乘，亦可醜也，自我致戎，又誰咎也。",
+      "解而拇，未當位也。",
+      "君子有解，小人退也。",
+      "公用射隼，以解悖也。",
+    ],
+    gcEn: "In (the state indicated by) Kieh advantage will be found in the south-west. If no (further) operations be called for, there will be good fortune in coming back (to the old conditions). If some operations be called for, there will be good fortune in the early conducting of them.",
+    legge: {
+      leggeName: "Kieh",
+      judgment: "In (the state indicated by) Kieh advantage will be found in the south-west. If no (further) operations be called for, there will be good fortune in coming back (to the old conditions). If some operations be called for, there will be good fortune in the early conducting of them.",
+      image: "(The trigram representing) thunder and that for rain, with these phenomena in a state of manifestation, form Kieh. The superior man, in accordance with this, forgives errors, and deals gently with crimes.",
+      lines: [
+        "The first line, divided, shows that its subject will commit no error.",
+        "The second line, undivided, shows its subject catch, in hunting, three foxes, and obtain the yellow (= golden) arrows. With firm correctness there will be good fortune.",
+        "The third line, divided, shows a porter with his burden, (yet) riding in a carriage. He will (only) tempt robbers to attack him. However firm and correct he may (try to) be, there will be cause for regret.",
+        "(To the subject of) the fourth line, undivided, (it is said), 'Remove your toes. Friends will (then) come, between you and whom there will be mutual confidence.'",
+        "The fifth line, divided, shows (its subject), the superior man (= the ruler), executing his function of removing (whatever is injurious to the idea of the hexagram), in which case there will he good fortune, and confidence in him will be shown even by the small men.",
+        "In the sixth line, divided, we see a feudal prince (with his bow) shooting at a falcon on the top of a high wall, and hitting it. (The effect of his action) will be in every way advantageous.",
+      ],
+    },
   },
   {
     u: "䷨",
@@ -1149,6 +2071,29 @@ export const GUA: Hexagram[] = [
       "Someone enriches him with ten pairs of tortoise shells, and they cannot be refused. Supreme good fortune.",
       "Without decreasing, increasing others. No blame. Perseverance brings good fortune. It is favorable to undertake something. One gains servants but no longer has a separate household.",
     ],
+    gc: "有孚，元吉，無咎，可貞，利有攸往。曷之用，二簋可用享。",
+    yaoXiao: [
+      "巳事遄往，尚合志也。",
+      "九二利貞，中以為志也。",
+      "一人行，三則疑也。",
+      "損其疾，亦可喜也。",
+      "六五元吉，自上佑也。",
+      "弗損益之，大得志也。",
+    ],
+    gcEn: "In (what is denoted by) Sun, if there be sincerity (in him who employs it), there will be great good fortune:—freedom from error; firmness and correctness that can be maintained; and advantage in every movement that shall be made. In what shall this (sincerity in the exercise of Sun) be employed? (Even) in sacrifice two baskets of grain, (though there be nothing else), may be presented.",
+    legge: {
+      leggeName: "Sun",
+      judgment: "In (what is denoted by) Sun, if there be sincerity (in him who employs it), there will be great good fortune:—freedom from error; firmness and correctness that can be maintained; and advantage in every movement that shall be made. In what shall this (sincerity in the exercise of Sun) be employed? (Even) in sacrifice two baskets of grain, (though there be nothing else), may be presented.",
+      image: "(The trigram representing) a mountain and beneath it that for the waters of a marsh form Sun. The superior man, in accordance with this, restrains his wrath and represses his desires.",
+      lines: [
+        "The first line, undivided, shows its subject suspending his own affairs, and hurrying away (to help the subject of the fourth line). He will commit no error, but let him consider how far he should contribute of what is his (for the other).",
+        "The second line, undivided, shows that it will be advantageous for its subject to maintain a firm correctness, and that action on his part will be evil. He can give increase (to his correlate) without taking from himself.",
+        "The third line, divided, shows how of three men walking together, the number is diminished by one; and how one, walking, finds his friend.",
+        "The fourth line, divided, shows its subject diminishing the ailment under which he labours by making (the subject of the first line) hasten (to his help), and make him glad. There will be no error.",
+        "The fifth line, divided, shows parties adding to (the stores of) its subject ten pairs of tortoise shells, and accepting no refusal. There will be great good fortune.",
+        "The topmost line, undivided, shows its subject giving increase to others without taking from himself. There will be no error. With firm correctness there will be good fortune. There will be advantage in every movement that shall be made. He will find ministers more than can be counted by their clans.",
+      ],
+    },
   },
   {
     u: "䷩",
@@ -1177,6 +2122,29 @@ export const GUA: Hexagram[] = [
       "With sincerity and a benevolent heart, do not ask — supreme good fortune. Sincerity blesses one's own virtue.",
       "No one increases him. Someone strikes him. The heart is inconstant — misfortune.",
     ],
+    gc: "利有攸往，利涉大川。",
+    yaoXiao: [
+      "元吉無咎，下不厚事也。",
+      "或益之，自外來也。",
+      "益用凶事，固有之也。",
+      "告公從，以益志也。",
+      "有孚惠心，勿問之矣。惠我德，大得志也。",
+      "莫益之，偏辭也。或擊之，自外來也。",
+    ],
+    gcEn: "Yi indicates that (in the state which it denotes) there will be advantage in every movement which shall be undertaken, that it will be advantageous (even) to cross the great stream.",
+    legge: {
+      leggeName: "Yi",
+      judgment: "Yi indicates that (in the state which it denotes) there will be advantage in every movement which shall be undertaken, that it will be advantageous (even) to cross the great stream.",
+      image: "(The trigram representing) wind and that for thunder form Yi. The superior man, in accordance with this, when he sees what is good, moves towards it; and when he sees his errors, he turns from them.",
+      lines: [
+        "The first line, undivided, shows that it will be advantageous for its subject in his position to make a great movement. If it be greatly fortunate, no blame will be imputed to him.",
+        "The second line, divided, shows parties adding to the stores of its subject ten pairs of tortoise shells whose oracles cannot be opposed. Let him persevere in being firm and correct, and there will be good fortune. Let the king, (having the virtues thus distinguished), employ them in presenting his offerings to God, and there will be good fortune.",
+        "The third line, divided, shows increase given to its subject by means of what is evil, so that he shall (be led to good), and be without blame. Let him be sincere and pursue the path of the Mean, (so shall he secure the recognition of the ruler, like) an officer who announces himself to his prince by the symbol of his rank.",
+        "The fourth line, divided, shows its subject pursuing the due course. His advice to his prince is followed. He can with advantage be relied on in such a movement as that of removing the capital.",
+        "The fifth line, undivided, shows its subject with sincere heart seeking to benefit (all below). There need be no question about it; the result will be great good fortune. (All below) will with sincere heart acknowledge his goodness.",
+        "In the sixth line, undivided, we see one to whose increase none will contribute, while many will seek to assail him. He observes no regular rule in the ordering of his heart. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷪",
@@ -1205,6 +2173,29 @@ export const GUA: Hexagram[] = [
       "The weeds are resolutely uprooted. Walking the middle way — no blame.",
       "No cry. In the end, misfortune.",
     ],
+    gc: "揚于王庭，孚號，有厲，告自邑，不利即戎，利有攸往。",
+    yaoXiao: [
+      "不勝而往，咎也。",
+      "莫夜有戎，得中道也。",
+      "君子夬夬，終無咎也。",
+      "其行次且，位不當也。聞言不信，聰不明也。",
+      "中行無咎，中未光也。",
+      "無號之凶，終不可長也。",
+    ],
+    gcEn: "Kwai requires (in him who would fulfil its meaning) the exhibition (of the culprit's guilt) in the royal court, and a sincere and earnest appeal (for sympathy and support), with a consciousness of the peril (involved in cutting off the criminal). He should (also) make announcement in his own city, and show that it will not be well to have recourse at once to arms. (In this way) there will be advantage in whatever he shall go forward to.",
+    legge: {
+      leggeName: "Kwai",
+      judgment: "Kwai requires (in him who would fulfil its meaning) the exhibition (of the culprit's guilt) in the royal court, and a sincere and earnest appeal (for sympathy and support), with a consciousness of the peril (involved in cutting off the criminal). He should (also) make announcement in his own city, and show that it will not be well to have recourse at once to arms. (In this way) there will be advantage in whatever he shall go forward to.",
+      image: "(The trigram representing) heaven and that for the waters of a marsh mounting above it form Kwai. The superior man, in accordance with this, bestows emolument on those below him, and dislikes allowing his gifts to accumulate (undispensed).",
+      lines: [
+        "The first line, undivided, shows its subject in (the pride of) strength advancing with his toes. He goes forward, but will not succeed. There will be ground for blame.",
+        "The second line, undivided, shows its subject full of apprehension and appealing (for sympathy and help). Late at night hostile measures may be (taken against him), but he need not be anxious about them.",
+        "The third line, undivided, shows its subject (about to advance) with strong (and determined) looks. There will be evil. (But) the superior man, bent on cutting off (the criminal), will walk alone and encounter the rain, (till he be hated by his proper associates) as if he were contaminated (by the others). (In the end) there will be no blame against him.",
+        "The fourth line, undivided, shows one from whose buttocks the skin has been stripped, and who walks slowly and with difficulty. (If he could act) like. a sheep led (after its companions), occasion for repentance would disappear. But though he hear these words, he will not believe them.",
+        "The fifth line, undivided, shows (the small men like) a bed of purslain, which ought to be uprooted with the utmost determination. (The subject of the line having such determination), his action, in harmony with his central position, will lead to no error or blame.",
+        "The sixth line, divided, shows its subject without any (helpers) on whom to call. His end will be evil.",
+      ],
+    },
   },
   {
     u: "䷫",
@@ -1233,6 +2224,29 @@ export const GUA: Hexagram[] = [
       "A melon wrapped in willow leaves, containing hidden brilliance — it drops as if from heaven.",
       "Meeting at the horns — humiliation, but no blame.",
     ],
+    gc: "女壯，勿用取女。",
+    yaoXiao: [
+      "繫于金柅，柔道牽也。",
+      "包有魚，義不及賓也。",
+      "其行次且，行未牽也。",
+      "無魚之凶，遠民也。",
+      "九五含章，中正也。有隕自天，志不舍命也。",
+      "姤其角，上窮吝也。",
+    ],
+    gcEn: "Kau shows a female who is bold and strong. It will not be good to marry (such) a female.",
+    legge: {
+      leggeName: "Kau",
+      judgment: "Kau shows a female who is bold and strong. It will not be good to marry (such) a female.",
+      image: "(The trigram representing) wind and that for the sky above it form Kau. The sovereign, in accordance with this, delivers his charges, and promulgates his announcements throughout the four quarters (of the kingdom).",
+      lines: [
+        "The first line, divided, shows how its subject should be kept (like a carriage) tied and fastened to a metal drag, in which case with firm correctness there will be good fortune. (But) if he move in any direction, evil will appear. He will be (like) a lean pig, which is sure to keep jumping about.",
+        "The second line, undivided, shows its subject with a wallet of fish. There will be no error. But it will not be well to let (the subject of the first line) go forward to the guests.",
+        "The third line, undivided, shows one from whose buttocks the skin has been stripped so that he walks with difficulty. The position is perilous, but there will be no great error.",
+        "The fourth line, undivided, shows its subject with his wallet, but no fish in it. This will give rise to evil.",
+        "The fifth line, undivided, (shows its subject as) a medlar tree overspreading the gourd (beneath it). If he keep his brilliant qualities concealed, (a good issue) will descend (as) from Heaven.",
+        "The sixth line, undivided, shows its subject receiving others on his horns. There will be occasion for regret, but there will be no error.",
+      ],
+    },
   },
   {
     u: "䷬",
@@ -1261,6 +2275,29 @@ export const GUA: Hexagram[] = [
       "Gathering in a position of authority — no blame. If some lack sincerity, supreme and lasting perseverance is needed, and remorse vanishes.",
       "Sighing, weeping, and lamenting — but no blame.",
     ],
+    gc: "亨。王假有廟，利見大人，亨，利貞。用大牲吉，利有攸往。",
+    yaoXiao: [
+      "乃亂乃萃，其志亂也。",
+      "引吉無咎，中未變也。",
+      "往無咎，上巽也。",
+      "大吉無咎，位不當也。",
+      "萃有位，志未光也。",
+      "齎咨涕洟，未安上也。",
+    ],
+    gcEn: "In (the state denoted by) Zhui, the king will repair to his ancestral temple. It will be advantageous (also) to meet with the great man; and then there will be progress and success, though the advantage must come through firm correctness. The use of great victims will conduce to good fortune; and in whatever direction movement is made, it will be advantageous.",
+    legge: {
+      leggeName: "Zhui",
+      judgment: "In (the state denoted by) Zhui, the king will repair to his ancestral temple. It will be advantageous (also) to meet with the great man; and then there will be progress and success, though the advantage must come through firm correctness. The use of great victims will conduce to good fortune; and in whatever direction movement is made, it will be advantageous.",
+      image: "(The trigram representing the) earth and that for the waters of a marsh raised above it form Zhui. The superior man, in accordance with this, has his weapons of war put in good repair, to be prepared against unforeseen contingencies.",
+      lines: [
+        "The first line, divided, shows its subject with a sincere desire (for union), but unable to carry it out, so that disorder is brought into the sphere of his union. If he cry out (for help to his proper correlate), all at once (his tears) will give place to smiles. He need not mind (the temporary difficulty); as he goes forward, there will be no error.",
+        "The second line, divided, shows its subject led forward (by his correlate). There will be good fortune, and freedom from error. There is entire sincerity, and in that case (even the small offerings of) the vernal sacrifice are acceptable.",
+        "The third line, divided, shows its subject striving after union and seeming to sigh, yet nowhere finding any advantage. If he go forward, he will not err, though there may be some small cause for regret.",
+        "The fourth line, undivided, shows its subject in such a state that, if he be greatly fortunate, he will receive no blame.",
+        "The fifth line, undivided, shows the union (of all) under its subject in the place of dignity. There will be no error. If any do not have confidence in him, let him see to it that (his virtue) be great, long-continued, and firmly correct, and all occasion for repentance will disappear.",
+        "The topmost line, divided, shows its subject sighing and weeping; but there will be no error.",
+      ],
+    },
   },
   {
     u: "䷭",
@@ -1289,6 +2326,29 @@ export const GUA: Hexagram[] = [
       "Perseverance brings good fortune. Ascending step by step.",
       "Ascending in darkness — favorable only through ceaseless perseverance.",
     ],
+    gc: "元亨，用見大人，勿恤，南征吉。",
+    yaoXiao: [
+      "允升大吉，上合志也。",
+      "九二之孚，有喜也。",
+      "升虛邑，無所疑也。",
+      "王用亨于岐山，順事也。",
+      "貞吉升階，大得志也。",
+      "冥升在上，消不富也。",
+    ],
+    gcEn: "Shang indicates that (under its conditions) there will be great progress and success. Seeking by (the qualities implied in it) to meet with the great man, its subject need have no anxiety. Advance to the south will be fortunate.",
+    legge: {
+      leggeName: "Shang",
+      judgment: "Shang indicates that (under its conditions) there will be great progress and success. Seeking by (the qualities implied in it) to meet with the great man, its subject need have no anxiety. Advance to the south will be fortunate.",
+      image: "(The trigram representing) wood and that for the earth with the wood growing in the midst of it form Shang. The superior man, in accordance with this, pays careful attention to his virtue, and accumulates the small developments of it till it is high and great.",
+      lines: [
+        "The first line, divided, shows its subject advancing upwards with the welcome (of those above him). There will be great good fortune.",
+        "The second line, undivided, shows its subject with that sincerity which will make even the (small) offerings of the vernal sacrifice acceptable. There will be no error.",
+        "The third line, undivided, shows its subject ascending upwards (as into) an empty city.",
+        "The fourth line, divided, shows its subject employed by the king to present his offerings on mount Khi. There will be good fortune; there will be no mistake.",
+        "The fifth line, divided, shows its subject firmly correct, and therefore enjoying good fortune. He ascends the stairs (with all due ceremony).",
+        "The sixth line, divided, shows its subject advancing upwards blindly. Advantage will be found in a ceaseless maintenance of firm correctness.",
+      ],
+    },
   },
   {
     u: "䷮",
@@ -1317,6 +2377,29 @@ export const GUA: Hexagram[] = [
       "Nose and feet cut off, oppressed by those in crimson sashes. Gradually joy comes. It is favorable to make offerings and sacrifices.",
       "Oppressed by creeping vines, tottering precariously. Saying 'movement brings regret' — yet having such regret, advancing brings good fortune.",
     ],
+    gc: "亨，貞，大人吉，無咎，有言不信。",
+    yaoXiao: [
+      "入于幽谷，幽不明也。",
+      "困于酒食，中有慶也。",
+      "據于蒺蔾，乘剛也。入于其宮，不見其妻，不祥也。",
+      "來徐徐，志在下也。雖不當位，有與也。",
+      "劓刖，志未得也。乃徐有說，以中直也。利用祭祀，受福也。",
+      "困于葛藟，未當也。動悔，有悔吉，行也。",
+    ],
+    gcEn: "In (the condition denoted by) Khwan there may (yet be) progress and success. For the firm and correct, the (really) great man, there will be good fortune. He will fall into no error. If he make speeches, his words cannot be made good.",
+    legge: {
+      leggeName: "Khwan",
+      judgment: "In (the condition denoted by) Khwan there may (yet be) progress and success. For the firm and correct, the (really) great man, there will be good fortune. He will fall into no error. If he make speeches, his words cannot be made good.",
+      image: "(The trigram representing) a marsh, and (below it that for a defile, which has drained the other dry so that there is) no water in it, form Khwan. The superior man, in accordance with this, will sacrifice his life in order to carry out his purpose.",
+      lines: [
+        "The first line, divided, shows its subject with bare buttocks straitened under the stump of a tree. He enters a dark valley, and for three years has no prospect (of deliverance).",
+        "The second line, undivided, shows its subject straitened amidst his wine and viands. There come to him anon the red knee-covers (of the ruler). It will be well for him (to maintain his sincerity as) in sacrificing. Active operations (on his part) will lead to evil, but he will be free from blame.",
+        "The third line, divided, shows its subject straitened before a (frowning) rock. He lays hold of thorns. He enters his palace, and does not see his wife. There will be evil.",
+        "The fourth line, undivided shows its subject proceeding very slowly (to help the subject of the first line), who is straitened by the carriage adorned with metal in front of him. There will be occasion for regret, but the end will be good.",
+        "The fifth line, undivided, shows its subject with his nose and feet cut off. He is straitened by (his ministers in their) scarlet aprons. He is leisurely in his movements, however, and is satisfied. It will be well for him to be (as sincere) as in sacrificing (to spiritual beings).",
+        "The sixth line, divided, shows its subject straitened, as if bound with creepers; or in a high and dangerous position, and saying (to himself), 'If I move, I shall repent it.' If he do repent of former errors, there will be good fortune in his going forward.",
+      ],
+    },
   },
   {
     u: "䷯",
@@ -1345,6 +2428,29 @@ export const GUA: Hexagram[] = [
       "The well is clear, its cool spring water fit to drink.",
       "The well is reached and should not be covered. With sincerity, supreme good fortune.",
     ],
+    gc: "改邑不改井，無喪無得，往來井井。汔至，亦未繘井，羸其瓶，凶。",
+    yaoXiao: [
+      "井泥不食，下也。舊井無禽，時舍也。",
+      "井谷射鮒，無與也。",
+      "井渫不食，行惻也。求王明，受福也。",
+      "井甃無咎，修井也。",
+      "寒泉之食，中正也。",
+      "元吉在上，大成也。",
+    ],
+    gcEn: "(Looking at) Zing, (we think of) how (the site of) a town may be changed, while (the fashion of) its wells undergoes no change. (The water of a well) never disappears and never receives (any great) increase, and those who come and those who go can draw and enjoy the benefit. If (the drawing) have nearly been accomplished, but, before the rope has quite reached the water, the bucket is broken, this is evil.",
+    legge: {
+      leggeName: "Zing",
+      judgment: "(Looking at) Zing, (we think of) how (the site of) a town may be changed, while (the fashion of) its wells undergoes no change. (The water of a well) never disappears and never receives (any great) increase, and those who come and those who go can draw and enjoy the benefit. If (the drawing) have nearly been accomplished, but, before the rope has quite reached the water, the bucket is broken, this is evil.",
+      image: "(The trigram representing) wood and above it that for water form Zing. The superior man, in accordance with this, comforts the people, and. stimulates them to mutual helpfulness.",
+      lines: [
+        "The first line, divided, shows a well so muddy that men will not drink of it; or an old well to which neither birds (nor other creatures) resort.",
+        "The second line, undivided, shows a well from which by a hole the water escapes and flows away to the shrimps (and such small creatures among the grass), or one the water of which leaks away from a broken basket.",
+        "The third line, undivided, shows a well, which has been cleared out, but is not used. Our hearts are sorry for this, for the water might be drawn out and used. If the king were (only) intelligent, both he and we might receive the benefit of it.",
+        "The fourth line, divided, shows a well, the lining of which is well laid. There will be no error.",
+        "The fifth line, undivided, shows a clear, limpid well, (the waters from) whose cold spring are (freely) drunk.",
+        "The topmost line, divided, shows (the water from) the well brought to the top, which is not allowed to be covered. This suggests the idea of sincerity. There will be great good fortune.",
+      ],
+    },
   },
   {
     u: "䷰",
@@ -1373,6 +2479,29 @@ export const GUA: Hexagram[] = [
       "The great person transforms like a tiger — even before the oracle is consulted, trust is already present.",
       "The noble one transforms like a leopard; the lesser person merely changes their face. Advancing brings misfortune; remaining steadfast brings good fortune.",
     ],
+    gc: "巳日乃孚，元亨利貞，悔亡。",
+    yaoXiao: [
+      "鞏用黃牛，不可以有為也。",
+      "巳日革之，行有嘉也。",
+      "革言三就，又何之矣。",
+      "改命之吉，信志也。",
+      "大人虎變，其文炳也。",
+      "君子豹變，其文蔚也。小人革面，順以從君也。",
+    ],
+    gcEn: "(What takes place as indicated by) Ko is believed in only after it has been accomplished. There will be great progress and success. Advantage will come from being firm and correct. (In that case) occasion for repentance will disappear.",
+    legge: {
+      leggeName: "Ko",
+      judgment: "(What takes place as indicated by) Ko is believed in only after it has been accomplished. There will be great progress and success. Advantage will come from being firm and correct. (In that case) occasion for repentance will disappear.",
+      image: "(The trigram representing the waters of) a marsh and that for fire in the midst of them form Ko. The superior man, in accordance with this, regulates his (astronomical) calculations, and makes clear the seasons and times.",
+      lines: [
+        "The first line, undivided, shows its subject (as if he were) bound with the skin of a yellow ox.",
+        "The second line, divided, shows its subject making his changes after some time has passed. Action taken will be fortunate. There will be no error.",
+        "The third line, undivided, shows that action taken by its subject will be evil. Though he be firm and correct, his position is perilous. If the change (he contemplates) have been three times fully discussed, he will be believed in.",
+        "The fourth line, undivided, shows occasion for repentance disappearing (from its subject). Let him be believed in; and though he change (existing) ordinances, there will be good fortune.",
+        "The fifth line, undivided, shows the great man (producing his changes) as the tiger (does when he) changes (his stripes). Before he divines (and proceeds to action), faith has been reposed in him.",
+        "The sixth line, divided, shows the superior man producing his changes as the leopard (does when he) changes (his spots), while small men change their faces (and show their obedience). To go forward (now) would lead to evil, but there will be good fortune in abiding firm and correct.",
+      ],
+    },
   },
   {
     u: "䷱",
@@ -1401,6 +2530,29 @@ export const GUA: Hexagram[] = [
       "The cauldron has yellow ears and a golden carrying bar. Perseverance is favorable.",
       "The cauldron has a jade carrying bar. Great good fortune; nothing that is not favorable.",
     ],
+    gc: "元吉，亨。",
+    yaoXiao: [
+      "鼎顛趾，未悖也。利出否，以從貴也。",
+      "鼎有實，慎所之也。我仇有疾，終無尤也。",
+      "鼎耳革，失其義也。",
+      "覆公餗，信如何也。",
+      "鼎黃耳，中以為實也。",
+      "玉鉉在上，剛柔節也。",
+    ],
+    gcEn: "Ting gives the intimation of great progress and success.",
+    legge: {
+      leggeName: "Ting",
+      judgment: "Ting gives the intimation of great progress and success.",
+      image: "(The trigram representing) wood and above it that for fire form Ting. The superior man, in accordance with this, keeps his every position correct, and maintains secure the appointment (of Heaven).",
+      lines: [
+        "The first line, divided, shows the caldron overthrown and its feet turned up. (But) there will be advantage in its getting rid of what was bad in it. (Or it shows us) the concubine (whose position is improved) by means of her son. There will be no error.",
+        "The second line, undivided, shows the caldron with the things (to be cooked) in it. (If its subject can say), 'My enemy dislikes me, but he cannot approach me,' there will be good fortune.",
+        "The third line, undivided, shows the caldron with (the places of) its ears changed. The progress (of its subject) is (thus) stopped. The fat flesh of the pheasant (which is in the caldron) will not be eaten. But the (genial) rain will come, and the grounds for repentance will disappear. There will be good fortune in the end.",
+        "The fourth line, undivided, shows the caldron with its feet broken; and its contents, designed for the ruler's use, overturned and spilt. Its Subject will be made to blush for shame. There will be evil.",
+        "The fifth line, divided, shows the caldron with yellow ears and rings of metal in them. There will be advantage through being firm and correct.",
+        "The sixth line, undivided, shows the caldron with rings of jade. There will be great good fortune, and all action taken will be in every way advantageous.",
+      ],
+    },
   },
   {
     u: "䷲",
@@ -1429,6 +2581,29 @@ export const GUA: Hexagram[] = [
       "Thunder comes and goes with peril, yet nothing of value is lost. There are tasks to attend to.",
       "Thunder brings trembling and fearful glances — advancing brings misfortune. When the shock does not strike oneself but one's neighbor, there is no blame. Marriage talk brings gossip.",
     ],
+    gc: "亨。震來虩虩，笑言啞啞。震驚百里，不喪匕鬯。",
+    yaoXiao: [
+      "震來虩虩，恐致福也。笑言啞啞，後有則也。",
+      "震來厲，乘剛也。",
+      "震蘇蘇，位不當也。",
+      "震遂泥，未光也。",
+      "震往來厲，危行也。其事在中，大無喪也。",
+      "震索索，中未得也。雖凶無咎，畏鄰戒也。",
+    ],
+    gcEn: "Kan gives the intimation of ease and development. When (the time of) movement (which it indicates) comes, (the subject of the hexagram) will be found looking out with apprehension, and yet smiling and talking cheerfully. When the movement (like a crash of thunder) terrifies all within a hundred li, he will be (like the sincere worshipper) who is not (startled into) letting go his ladle and (cup of) sacrificial spirits.",
+    legge: {
+      leggeName: "Kan",
+      judgment: "Kan gives the intimation of ease and development. When (the time of) movement (which it indicates) comes, (the subject of the hexagram) will be found looking out with apprehension, and yet smiling and talking cheerfully. When the movement (like a crash of thunder) terrifies all within a hundred li, he will be (like the sincere worshipper) who is not (startled into) letting go his ladle and (cup of) sacrificial spirits.",
+      image: "(The trigram representing) thunder, being repeated, forms Kan. The superior man, in accordance with this, is fearful and apprehensive, cultivates (his virtue), and examines (his faults).",
+      lines: [
+        "The first line, undivided, shows its subject, when the movement approaches, looking out and around with apprehension, and afterwards smiling and talking cheerfully. There will be good fortune.",
+        "The second line, divided, shows its subject, when the movement approaches, in a position of peril. He judges it better to let go the articles (in his possession), and to ascend a very lofty height. There is no occasion for him to pursue after (the things he has let go); in seven days he will find them.",
+        "The third line, divided, shows its subject distraught amid the startling movements going on. If those movements excite him to (right) action, there will be no mistake.",
+        "The fourth line, undivided, shows its subject, amid the startling movements, supinely sinking (deeper) in the mud.",
+        "The fifth line, divided, shows its subject going and coming amidst the startling movements (of the time), and always in peril; but perhaps he will not incur loss, and find business (which he can accomplish).",
+        "The topmost line, divided, shows its subject, amidst the startling movements (of the time), in breathless dismay and looking round him with trembling apprehension. If he take action, there will be evil. If, while the startling movements have not reached his own person and his neighbourhood, (he were to take precautions), there would be no error, though his relatives might (still) speak against him.",
+      ],
+    },
   },
   {
     u: "䷳",
@@ -1457,6 +2632,29 @@ export const GUA: Hexagram[] = [
       "Keeping the jaws still; words come in proper order. Remorse vanishes.",
       "Noble stillness — good fortune.",
     ],
+    gc: "艮其背，不獲其身，行其庭，不見其人，無咎。",
+    yaoXiao: [
+      "艮其趾，未失正也。",
+      "不拯其隨，未退聽也。",
+      "艮其限，危薰心也。",
+      "艮其身，止諸躬也。",
+      "艮其輔，以中正也。",
+      "敦艮之吉，以厚終也。",
+    ],
+    gcEn: "When one's resting is like that of the back, and he loses all consciousness of self; when he walks in his courtyard, and does not see any (of the persons) in it,—there will be no error.",
+    legge: {
+      leggeName: "Kan",
+      judgment: "When one's resting is like that of the back, and he loses all consciousness of self; when he walks in his courtyard, and does not see any (of the persons) in it,—there will be no error.",
+      image: "(Two trigrams representing) a mountain, one over the other, form Kan. The superior man, in accordance with this, does not go in his thoughts beyond the (duties of the) position in which he is.",
+      lines: [
+        "The first line, divided, shows its subject keeping his toes at rest. There will be no error; but it will be advantageous for him to be persistently firm and correct.",
+        "The second line, divided, shows its subject keeping the calves of his legs at rest. He cannot help (the subject of the line above) whom he follows, and is dissatisfied in his mind.",
+        "The third line, undivided, shows its subject keeping his loins at rest, and separating the ribs (from the body below). The situation is perilous, and the heart glows with suppressed excitement.",
+        "The fourth line, divided, shows its subject keeping his trunk at rest. There will be no error.",
+        "The fifth line, divided, shows its subject keeping his jawbones at rest, so that his words are (all) orderly. Occasion for repentance will disappear.",
+        "The sixth line, undivided, shows its subject devotedly maintaining his restfulness. There will be good fortune.",
+      ],
+    },
   },
   {
     u: "䷴",
@@ -1485,6 +2683,29 @@ export const GUA: Hexagram[] = [
       "The wild goose gradually advances to the summit. The wife does not conceive for three years, but in the end nothing can prevent it — good fortune.",
       "The wild goose gradually advances to the highlands. Its feathers can be used for ceremonial display — good fortune.",
     ],
+    gc: "女歸吉，利貞。",
+    yaoXiao: [
+      "小子之厲，義無咎也。",
+      "飲食衎衎，吉，不素飽也。",
+      "夫征不復，離群醜也。婦孕不育，失其道也。利用御寇，順相保也。",
+      "或得其桷，順以巽也。",
+      "終莫之勝，吉；得所愿也。",
+      "其羽可用為儀，吉；不可亂也。",
+    ],
+    gcEn: "Kien suggests to us the marriage of a young lady, and the good fortune (attending it). There will be advantage in being firm and correct.",
+    legge: {
+      leggeName: "Kien",
+      judgment: "Kien suggests to us the marriage of a young lady, and the good fortune (attending it). There will be advantage in being firm and correct.",
+      image: "(The trigram representing) a mountain and above it that for a tree form Kien. The superior man, in accordance with this, attains to and maintains his extraordinary virtue, and makes the manners of the people good.",
+      lines: [
+        "The first line, divided, shows the wild geese gradually approaching the shore. A young officer (in similar circumstances) will be in a position of danger, and be spoken against; but there will be no error.",
+        "The second line, divided, shows the geese gradually approaching the large rocks, where they eat and drink joyfully and at ease. There will be good fortune.",
+        "The third line, undivided, shows them gradually advanced to the dry plains. (It suggests also the idea of) a husband who goes on an expedition from which he does not return, and of a wife who is pregnant, but will not nourish her child. There will be evil. (The case symbolised) might be advantageous in resisting plunderers.",
+        "The fourth line, divided, shows the geese gradually advanced to the trees. They may light on the flat branches. There will be no error.",
+        "The fifth line, undivided, shows the geese gradually advanced to the high mound. (It suggests the idea of) a wife who for three years does not become pregnant; but in the end the natural issue cannot be prevented. There will be good fortune.",
+        "The sixth line, undivided, shows the geese gradually advanced to the large heights (beyond). Their feathers can be used as ornaments. There will be good fortune.",
+      ],
+    },
   },
   {
     u: "䷵",
@@ -1513,6 +2734,29 @@ export const GUA: Hexagram[] = [
       "Emperor Yi gave his daughter in marriage; the princess's sleeves were not as fine as those of the junior wife. The moon is nearly full — good fortune.",
       "The woman holds a basket with nothing inside; the man slaughters a sheep but no blood flows. Nothing is favorable.",
     ],
+    gc: "征凶，無攸利。",
+    yaoXiao: [
+      "歸妹以娣，以恆也。跛能履吉，相承也。",
+      "利幽人之貞，未變常也。",
+      "歸妹以須，未當也。",
+      "愆期之志，有待而行也。",
+      "帝乙歸妹，不如其娣之袂良也。其位在中，以貴行也。",
+      "上六無實，承虛筐也。",
+    ],
+    gcEn: "Kwei Mei indicates that (under the conditions which it denotes) action will be evil, and in no wise advantageous.",
+    legge: {
+      leggeName: "Kwei Mei",
+      judgment: "Kwei Mei indicates that (under the conditions which it denotes) action will be evil, and in no wise advantageous.",
+      image: "(The trigram representing the waters of) a marsh and over it that for thunder form Kwei Mei. The superior man, in accordance with this, having regard to the far-distant end, knows the mischief (that may be done at the beginning).",
+      lines: [
+        "The first line, undivided, shows the younger sister married off in a position ancillary to the real wife. (It suggests the idea of) a person lame on one leg who yet manages to tramp along. Going forward will be fortunate.",
+        "The second line, undivided, shows her blind of one eye, and yet able to see. There will be advantage in her maintaining the firm correctness of a solitary widow.",
+        "The third line, divided, shows the younger sister who was to be married off in a mean position. She returns and accepts an ancillary position.",
+        "The fourth line, undivided, shows the younger sister who is to be married off protracting the time. She may be late in being married, but the time will come.",
+        "The fifth line, divided, reminds us of the marrying of the younger sister of (king) Ti-yi, when the sleeves of her the princess were not equal to those of the (still) younger sister who accompanied her in an inferior capacity. (The case suggests the thought of) the moon almost full. There will be good fortune.",
+        "The sixth line, divided, shows the young lady bearing the basket, but without anything in it, and the gentleman slaughtering the sheep, but without blood flowing from it. There will be no advantage in any way.",
+      ],
+    },
   },
   {
     u: "䷶",
@@ -1541,6 +2785,29 @@ export const GUA: Hexagram[] = [
       "Brilliance comes; there is blessing and fame — good fortune.",
       "One makes one's house so grand and screens the household in shadow. Peering through the gate, it is silent — no one is there. For three years no one is seen — misfortune.",
     ],
+    gc: "亨，王假之，勿憂，宜日中。",
+    yaoXiao: [
+      "雖旬無咎，過旬災也。",
+      "有孚發若，信以發志也。",
+      "豐其沛，不可大事也。折其右肱，終不可用也。",
+      "豐其蔀，位不當也。日中見斗，幽不明也。遇其夷主，吉；行也。",
+      "六五之吉，有慶也。",
+      "豐其屋，天際翔也。闚其戶，闃其無人，自藏也。",
+    ],
+    gcEn: "Fang intimates progress and development. When a king has reached the point (which the name denotes) there is no occasion to be anxious (through fear of a change). Let him be as the sun at noon.",
+    legge: {
+      leggeName: "Fang",
+      judgment: "Fang intimates progress and development. When a king has reached the point (which the name denotes) there is no occasion to be anxious (through fear of a change). Let him be as the sun at noon.",
+      image: "(The trigrams representing) thunder and lightning combine to form Fang. The superior man, in accordance with this, decides cases of litigation, and apportions punishments with exactness.",
+      lines: [
+        "The first line, undivided, shows its subject meeting with his mate. Though they are both of the same character, there will be no error. Advance will call forth approval.",
+        "The second line, divided, shows its subject surrounded by screens so large and thick that at midday he can see from them the constellation of the Bushel. If he go (and try to enlighten his ruler who is thus emblemed), he will make himself to be viewed with suspicion and dislike. Let him cherish his feeling of sincere devotion that he may thereby move (his ruler's mind), and there will be good fortune.",
+        "The third line, undivided, shows its subject with an (additional) screen of a large and thick banner, through which at midday he can see (the small) Mei star. (In the darkness) he breaks his right arm; but there will be no error.",
+        "The fourth line, undivided, shows its subject in a tent so large and thick that at midday he can see from it the constellation of the Bushel. But he meets with the subject of the (first) line, undivided like himself. There will be good fortune.",
+        "The fifth line, divided, shows its subject bringing around him the men of brilliant ability. There will be occasion for congratulation and praise. There will be good fortune.",
+        "The topmost line, divided, shows its subject with his house made large, but only serving as a screen to his household. When he looks at his door, it is still, and there is nobody about it. For three years no one is to be seen. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷷",
@@ -1569,6 +2836,29 @@ export const GUA: Hexagram[] = [
       "Shooting a pheasant — one arrow is lost, but in the end it brings praise and a mandate.",
       "The bird's nest burns. The wanderer first laughs, then weeps and wails. Losing an ox at the border — misfortune.",
     ],
+    gc: "小亨，旅貞吉。",
+    yaoXiao: [
+      "旅瑣瑣，志窮災也。",
+      "得童僕貞，終無尤也。",
+      "旅焚其次，亦以傷矣。以旅與下，其義喪也。",
+      "旅于處，未得位也。得其資斧，心未快也。",
+      "終以譽命，上逮也。",
+      "以旅在上，其義焚也。喪牛于易，終莫之聞也。",
+    ],
+    gcEn: "Lu intimates that (in the condition which it denotes) there may be some little attainment and progress. If the stranger or traveller be firm and correct as he ought to be, there will be good fortune.",
+    legge: {
+      leggeName: "Lu",
+      judgment: "Lu intimates that (in the condition which it denotes) there may be some little attainment and progress. If the stranger or traveller be firm and correct as he ought to be, there will be good fortune.",
+      image: "(The trigram representing) a mountain and above it that for fire form Lu. The superior man, in accordance with this, exerts his wisdom and caution in the use of punishments and not allowing litigations to continue.",
+      lines: [
+        "The first line, divided, shows the stranger mean and meanly occupied. It is thus that he brings on himself (further) calamity.",
+        "The second line, divided, shows the stranger, occupying his lodging-house, carrying with him his means of livelihood, and provided with good and trusty servants.",
+        "The third line, undivided, shows the stranger, burning his lodging-house, and having lost his servants. However firm and correct he (try to) be, he will be in peril.",
+        "The fourth line, undivided, shows the traveller in a resting-place, having (also) the means of livelihood and the axe, (but still saying), 'I am not at ease in my mind.'",
+        "The fifth line, divided, shows its subject shooting a pheasant. He will lose his arrow, but in the end he will obtain praise and a (high) charge.",
+        "The sixth line, undivided, suggests the idea of a bird burning its nest. The stranger, (thus represented), first laughs and then cries out. He has lost his ox(-like docility) too readily and easily. There will be evil.",
+      ],
+    },
   },
   {
     u: "䷸",
@@ -1597,6 +2887,29 @@ export const GUA: Hexagram[] = [
       "Perseverance brings good fortune; remorse vanishes. Nothing unfavorable. No beginning but a good end. Three days before the change and three days after — good fortune.",
       "Penetration beneath the bed — one loses one's provisions and axe. Perseverance brings misfortune.",
     ],
+    gc: "小亨，利攸往，利見大人。",
+    yaoXiao: [
+      "進退，志疑也。利武人之貞，志治也。",
+      "紛若之吉，得中也。",
+      "頻巽之吝，志窮也。",
+      "田獲三品，有功也。",
+      "九五之吉，位正中也。",
+      "巽在床下，上窮也。喪其資斧，正乎凶也。",
+    ],
+    gcEn: "Sun intimates that (under the conditions which it denotes) there will be some little attainment and progress. There will be advantage in movement onward in whatever direction. It will be advantageous (also) to see the great man.",
+    legge: {
+      leggeName: "Sun",
+      judgment: "Sun intimates that (under the conditions which it denotes) there will be some little attainment and progress. There will be advantage in movement onward in whatever direction. It will be advantageous (also) to see the great man.",
+      image: "(Two trigrams representing) wind, following each other, form Sun. The superior man, in accordance with this, reiterates his orders, and secures the practice of his affairs.",
+      lines: [
+        "The first line, divided, shows its subject (now) advancing, (now) receding. It would be advantageous for him to have the firm correctness of a brave soldier.",
+        "The second line, undivided, shows the representative of Sun beneath a couch, and employing diviners and exorcists in a way bordering on confusion. There will be good fortune and no error.",
+        "The third line, undivided, shows its subject penetrating (only) by violent and repeated efforts. There will be occasion for regret.",
+        "The fourth line, divided, shows all occasion for repentance (in its subject) passed away. He takes game for its threefold use in his hunting.",
+        "The fifth line, undivided, shows that with firm correctness there will be good fortune (to its subject). All occasion for repentance will disappear, and all his movements will be advantageous. There may have been no (good) beginning, but there will be a (good) end. Three days before making any changes, (let him give notice of them); and three days after, (let him reconsider them). There will (thus) be good fortune.",
+        "The sixth line, undivided, shows the representative of penetration beneath a couch, and having lost the axe with which he executed his decisions. However firm and correct he may (try to) be, there will be evil.",
+      ],
+    },
   },
   {
     u: "䷹",
@@ -1625,6 +2938,29 @@ export const GUA: Hexagram[] = [
       "Placing trust in what is destructive brings danger.",
       "Seductive joy — leading others into pleasure with no resolution.",
     ],
+    gc: "亨，利貞。",
+    yaoXiao: [
+      "和兌之吉，行未疑也。",
+      "孚兌之吉，信志也。",
+      "來兌之凶，位不當也。",
+      "九四之喜，有慶也。",
+      "孚于剝，位正當也。",
+      "上六引兌，未光也。",
+    ],
+    gcEn: "Tui intimates that (under its conditions) there will be progress and attainment. (But) it will be advantageous to be firm and correct.",
+    legge: {
+      leggeName: "Tui",
+      judgment: "Tui intimates that (under its conditions) there will be progress and attainment. (But) it will be advantageous to be firm and correct.",
+      image: "(Two symbols representing) the waters of a marsh, one over the other, form Tui. The superior man, in accordance with this, (encourages) the conversation of friends and (the stimulus of) their (common) practice.",
+      lines: [
+        "The first line, undivided, shows the pleasure of (inward) harmony. There will be good fortune.",
+        "The second line, undivided, shows the pleasure arising from (inward) sincerity. There will be good fortune. Occasion for repentance will disappear.",
+        "The third line, divided, shows its subject bringing round himself whatever can give pleasure. There will be evil.",
+        "The fourth line, undivided, shows its subject deliberating about what to seek his pleasure in, and not at rest. He borders on what would be injurious, but there will be cause for joy.",
+        "The fifth line, undivided, shows its subject trusting in one who would injure him. The situation is perilous.",
+        "The topmost line, divided, shows the pleasure of its subject in leading and attracting others.",
+      ],
+    },
   },
   {
     u: "䷺",
@@ -1653,6 +2989,29 @@ export const GUA: Hexagram[] = [
       "A great proclamation pours forth like sweat, dissolving even the king's reserve. No blame.",
       "Dispersing blood and harm — departing and keeping far away. No blame.",
     ],
+    gc: "亨。王假有廟，利涉大川，利貞。",
+    yaoXiao: [
+      "初六之吉，順也。",
+      "渙奔其机，得愿也。",
+      "渙其躬，志在外也。",
+      "渙其群，元吉；光大也。",
+      "王居無咎，正位也。",
+      "渙其血，遠害也。",
+    ],
+    gcEn: "Hwan intimates that (under its conditions) there will be progress and success. The king goes to his ancestral temple; and it will be advantageous to cross the great stream. It will be advantageous to be firm and correct.",
+    legge: {
+      leggeName: "Hwan",
+      judgment: "Hwan intimates that (under its conditions) there will be progress and success. The king goes to his ancestral temple; and it will be advantageous to cross the great stream. It will be advantageous to be firm and correct.",
+      image: "(The trigram representing) water and that for wind moving above the water form Hwan. The ancient kings, in accordance with this, presented offerings to God and established the ancestral temple.",
+      lines: [
+        "The first line, divided, shows its subject engaged in rescuing (from the impending evil) and having (the assistance of) a strong horse. There will be good fortune.",
+        "The second line, undivided, shows its subject, amid the dispersion, hurrying to his contrivance (for security). All occasion for repentance will disappear.",
+        "The third line, divided, shows its subject discarding any regard to his own person. There will be no occasion for repentance.",
+        "The fourth line, divided, shows its subject scattering the (different) parties (in the state); which leads to great good fortune. From the dispersion (he collects again good men standing out, a crowd) like a mound, which is what ordinary men would not have thought of.",
+        "The fifth line, undivided, shows its subject amidst the dispersion issuing his great announcements as the perspiration (flows from his body). He scatters abroad (also) the accumulations in the royal granaries. There will be no error.",
+        "The topmost line, undivided, shows its subject disposing of (what may be called) its bloody wounds, and going and separating himself from its anxious fears. There will be no error.",
+      ],
+    },
   },
   {
     u: "䷻",
@@ -1681,6 +3040,29 @@ export const GUA: Hexagram[] = [
       "Sweet limitation brings good fortune. Going forward wins esteem.",
       "Bitter limitation — perseverance in this brings misfortune, but remorse vanishes in time.",
     ],
+    gc: "亨。苦節，不可貞。",
+    yaoXiao: [
+      "不出戶庭，知通塞也。",
+      "不出門庭，失時極也。",
+      "不節之嗟，又誰咎也。",
+      "安節之亨，承上道也。",
+      "甘節之吉，居位中也。",
+      "苦節貞凶，其道窮也。",
+    ],
+    gcEn: "Kieh intimates that (under its conditions) there will be progress and attainment. (But) if the regulations (which it prescribes) be severe and difficult, they cannot be permanent.",
+    legge: {
+      leggeName: "Kieh",
+      judgment: "Kieh intimates that (under its conditions) there will be progress and attainment. (But) if the regulations (which it prescribes) be severe and difficult, they cannot be permanent.",
+      image: "(The trigram representing) a lake, and above it that for water, form Kieh. The superior man, in accordance with this, constructs his (methods of) numbering and measurement, and discusses (points of) virtue and conduct.",
+      lines: [
+        "The first line, undivided, shows its subject not quitting the courtyard outside his door. There will be no error.",
+        "The second line, undivided, shows its subject not quitting the courtyard inside his gate. There will be evil.",
+        "The third line, divided, shows its subject with no appearance of observing the (proper) regulations, in which case we shall see him lamenting. But there will be no one to blame (but himself).",
+        "The fourth line, divided, shows its subject quietly and naturally (attentive to all) regulations. There will be progress and success.",
+        "The fifth line, undivided, shows its subject sweetly and acceptably enacting his regulations. There will be good fortune. The onward progress with them will afford ground for admiration.",
+        "The topmost line, divided, shows its subject enacting regulations severe and difficult. Even with firmness and correctness there will be evil. But though there will be cause for repentance, it will (by and by) disappear.",
+      ],
+    },
   },
   {
     u: "䷼",
@@ -1709,6 +3091,29 @@ export const GUA: Hexagram[] = [
       "Possessing truth that binds together — no blame.",
       "A rooster's cry tries to reach heaven. Perseverance in this brings misfortune.",
     ],
+    gc: "豚魚吉，利涉大川，利貞。",
+    yaoXiao: [
+      "初九虞吉，志未變也。",
+      "其子和之，中心願也。",
+      "可鼓或罷，位不當也。",
+      "馬匹亡，絕類上也。",
+      "有孚攣如，位正當也。",
+      "翰音登于天，何可長也。",
+    ],
+    gcEn: "Kung Fu (moves even) pigs and fish, and leads to good fortune. There will be advantage in crossing the great stream. There will be advantage in being firm and correct.",
+    legge: {
+      leggeName: "Kung Fu",
+      judgment: "Kung Fu (moves even) pigs and fish, and leads to good fortune. There will be advantage in crossing the great stream. There will be advantage in being firm and correct.",
+      image: "(The trigram representing the waters of) a marsh and that for wind above it form Kung Fu. The superior man, in accordance with this, deliberates about cases of litigation and delays (the infliction of) death.",
+      lines: [
+        "The first line, undivided, shows its subject resting (in himself). There will be good fortune. If he sought to any other, he would not find rest.",
+        "The second line, undivided, shows its subject (like) the crane crying out in her hidden retirement, and her young ones responding to her. (It is as if it were said), 'I have a cup of good spirits,' (and the response were), 'I will partake of it with you.'",
+        "The third line, divided, shows its subject having met with his mate. Now he beats his drum, and now he leaves off. Now he weeps, and now he sings.",
+        "The fourth line, divided, shows its subject (like) the moon nearly full, and (like) a horse (in a chariot) whose fellow disappears. There will be no error.",
+        "The fifth line, undivided, shows its subject perfectly sincere, and linking (others) to him in closest union. There will be no error.",
+        "The topmost line, undivided, shows its subject in chanticleer (trying to) mount to heaven. Even with firm correctness there will be evil.",
+      ],
+    },
   },
   {
     u: "䷽",
@@ -1737,6 +3142,29 @@ export const GUA: Hexagram[] = [
       "Dense clouds but no rain from the western outskirts. The duke shoots and hits the quarry in its cave.",
       "Not meeting but passing beyond — the flying bird departs. Misfortune; this is called calamity and error.",
     ],
+    gc: "亨，利貞，可小事，不可大事。飛鳥遺之音，不宜上，宜下，大吉。",
+    yaoXiao: [
+      "飛鳥以凶，不可如何也。",
+      "不及其君，臣不可過也。",
+      "從或戕之，凶如何也。",
+      "弗過遇之，位不當也。往厲必戒，終不可長也。",
+      "密雲不雨，已上也。",
+      "弗遇過之，已亢也。",
+    ],
+    gcEn: "Hsiao Kwo indicates that (in the circumstances which it implies) there will be progress and attainment. But it will be advantageous to be firm and correct. (What the name denotes) may be done in small affairs, but not in great affairs. (It is like) the notes that come down from a bird on the wing;—to descend is better than to ascend. There will (in this way) be great good fortune.",
+    legge: {
+      leggeName: "Hsiao Kwo",
+      judgment: "Hsiao Kwo indicates that (in the circumstances which it implies) there will be progress and attainment. But it will be advantageous to be firm and correct. (What the name denotes) may be done in small affairs, but not in great affairs. (It is like) the notes that come down from a bird on the wing;—to descend is better than to ascend. There will (in this way) be great good fortune.",
+      image: "(The trigram representing) a hill and that for thunder above it form Hsiao Kwo. The superior man, in accordance with this, in his conduct exceeds in humility, in mourning exceeds in sorrow, and in his expenditure exceeds in economy.",
+      lines: [
+        "The first line, divided, suggests (the idea of) a bird flying, (and ascending) till the issue is evil.",
+        "The second line, divided, shows its subject passing by his grandfather, and meeting with his grandmother; not attempting anything against his ruler, but meeting him as his minister. There will be no error.",
+        "The third line, undivided, shows its subject taking no extraordinary precautions against danger; and some in consequence finding opportunity to assail and injure him. There will be evil.",
+        "The fourth line, undivided, shows its subject falling into no error, but meeting (the exigency of his situation), without exceeding (in his natural. course). If he go forward, there will be peril, and he must be cautious. There is no occasion to be using firmness perpetually.",
+        "The fifth line, divided, (suggests the idea) of dense clouds, but no rain, coming from our borders in the west. It also (shows) the prince shooting his arrow, and taking the bird in a cave.",
+        "The sixth line, divided, shows. its subject not meeting (the exigency of his situation), and exceeding (his proper course). (It suggests the idea of) a bird flying far aloft. There will be evil. The case is what is called one of calamity and self-produced injury.",
+      ],
+    },
   },
   {
     u: "䷾",
@@ -1765,6 +3193,29 @@ export const GUA: Hexagram[] = [
       "The eastern neighbor slaughters an ox for sacrifice, but it does not match the simple spring offering of the western neighbor, who truly receives the blessing.",
       "Getting one's head wet — danger. Going too far past the crossing point invites peril.",
     ],
+    gc: "亨，小利貞，初吉終亂。",
+    yaoXiao: [
+      "曳其輪，義無咎也。",
+      "七日得，以中道也。",
+      "三年克之，憊也。",
+      "終日戒，有所疑也。",
+      "東鄰殺牛，不如西鄰之時也；實受其福，吉大來也。",
+      "濡其首厲，何可久也。",
+    ],
+    gcEn: "Ki Zi intimates progress and success in small matters. There will be advantage in being firm and correct. There has been good fortune in the beginning; there may be disorder in the end.",
+    legge: {
+      leggeName: "Ki Zi",
+      judgment: "Ki Zi intimates progress and success in small matters. There will be advantage in being firm and correct. There has been good fortune in the beginning; there may be disorder in the end.",
+      image: "(The trigram representing) fire and that for water above it form Ki Zi. The superior man, in accordance with this, thinks of evil (that may come), and beforehand guards against it.",
+      lines: [
+        "The first line, undivided, (shows its subject as a driver) who drags back his wheel, (or as a fox) which has wet his tail. There will be no error.",
+        "The second line, divided, (shows its subject as) a wife who has lost her (carriage-)screen. There is no occasion to go in pursuit of it. In seven days she will find it.",
+        "The third line, undivided, (suggests the case of) Kao Zung, who attacked the Demon region, but was three years in subduing it. Small men should not be employed (in such enterprises).",
+        "The fourth line, divided, shows its subject with rags provided against any leak (in his boat), and on his guard all day long.",
+        "The fifth line, undivided, shows its subject (as) the neighbour in the east who slaughters an ox (for his sacrifice); but this is not equal to the (small) spring sacrifice of the neighbour in the west, whose sincerity receives the blessing.",
+        "The topmost line, divided, shows its subject with (even) his head immersed. The position is perilous.",
+      ],
+    },
   },
   {
     u: "䷿",
@@ -1793,5 +3244,28 @@ export const GUA: Hexagram[] = [
       "Perseverance brings good fortune; no remorse. The light of the noble one shines with sincerity — good fortune.",
       "Celebrating with wine in sincere confidence — no blame. But getting one's head wet means losing that trust through excess.",
     ],
+    gc: "亨，小狐汔濟，濡其尾，無攸利。",
+    yaoXiao: [
+      "濡其尾，亦不知極也。",
+      "九二貞吉，中以行正也。",
+      "未濟征凶，位不當也。",
+      "貞吉悔亡，志行也。",
+      "君子之光，其暉吉也。",
+      "飲酒濡首，亦不知節也。",
+    ],
+    gcEn: "Wei Zi intimates progress and success (in the circumstances which it implies). (We see) a young fox that has nearly crossed (the stream), when its tail gets immersed. There will be no advantage in any way.",
+    legge: {
+      leggeName: "Wei Zi",
+      judgment: "Wei Zi intimates progress and success (in the circumstances which it implies). (We see) a young fox that has nearly crossed (the stream), when its tail gets immersed. There will be no advantage in any way.",
+      image: "(The trigram representing) water and that for fire above it form Wei Zi. The superior man, in accordance with this, carefully discriminates among (the qualities of) things, and the (different) positions they (naturally) occupy.",
+      lines: [
+        "The first line, divided, shows its subject (like a fox) whose tail gets immersed. There will be occasion for regret.",
+        "The second line, undivided, shows its subject dragging back his (carriage-) wheel. With firmness and correctness there will be good fortune.",
+        "The third line, divided, shows its subject, with (the state of things) not yet remedied, advancing on; which will lead to evil. But there will be advantage in (trying to) cross the great stream.",
+        "The fourth line, undivided, shows its subject by firm correctness obtaining good fortune, so that all occasion for repentance disappears. Let him stir himself up, as if he were invading the Demon region, where for three years rewards will come to him (and his troops) from the great kingdom.",
+        "The fifth line, divided, shows its subject by firm correctness obtaining good fortune, and having no occasion for repentance. (We see in him) the brightness of a superior man, and the possession of sincerity. There will be good fortune.",
+        "The topmost line, undivided, shows its subject full of confidence and therefore feasting (quietly). There will be no error. (If he) cherish this confidence, till he (is like the fox who) gets his head immersed, it will fail of what is right.",
+      ],
+    },
   },
 ];
diff --git a/packages/core/src/data/legge.ts b/packages/core/src/data/legge.ts
new file mode 100644
index 0000000..7b20f73
--- /dev/null
+++ b/packages/core/src/data/legge.ts
@@ -0,0 +1,209 @@
+// James Legge — Sacred Books of the East vol. XVI (1882). Public domain.
+// Re-pulled from archive.org SBE16 plaintext + Wikisource cross-check.
+// The 4 baharna editorial drifts (NINE/SIX, missing hex 1/2 7th paragraph,
+// nav chrome, footnote-digit fusion) and 3 follow-up structural cleanups
+// (hex 41 trailing period, paren/space-separated footnote variants,
+// OCR "axe"→"are") have been removed. See data-acquisition/legge-cleaned.json.
+//
+// Per-hexagram judgment / image / lines are also wired onto each GUA[i].legge
+// for direct access; this module exposes the Wings translations that don't
+// have a clean 1:1 mapping into the zh data modules.
+
+/**
+ * Legge Appendix VI — Treatise on the Sequence (序卦傳).
+ * Keyed by KW hexagram number 1..64; mirrors the structure of XU_GUA. The
+ * same text is wired onto XU_GUA[i].textEn for renderer access.
+ */
+export const LEGGE_XUGUA_EN: Record<number, string> = {
+  1: "When there were heaven and earth, then afterwards all things were produced. What fills up (the space) between heaven and earth are (those) all things. Hence (Khien and Khwan) are followed by Kun. Kun denotes filling up.",
+  2: "When there were heaven and earth, then afterwards all things were produced. What fills up (the space) between heaven and earth are (those) all things. Hence (Khien and Khwan) are followed by Kun. Kun denotes filling up.",
+  3: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung.",
+  4: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung.",
+  5: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung.",
+  6: "Sung is sure to cause the rising up of the multitudes; and hence it is followed by Sze. Sze has the signification of multitudes, and between multitudes there must be some bond of union. Hence it is followed by Pi, which denotes being attached to.",
+  7: "Sung is sure to cause the rising up of the multitudes; and hence it is followed by Sze. Sze has the signification of multitudes, and between multitudes there must be some bond of union. Hence it is followed by Pi, which denotes being attached to.",
+  8: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai.",
+  9: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai.",
+  10: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai.",
+  11: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu.",
+  12: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu.",
+  13: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu.",
+  14: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu.",
+  15: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu.",
+  16: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great.",
+  17: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great.",
+  18: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great.",
+  19: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow.",
+  20: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow.",
+  21: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow.",
+  22: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow.",
+  23: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu.",
+  24: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu.",
+  25: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu.",
+  26: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to.",
+  27: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to.",
+  28: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to.",
+  29: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to.",
+  30: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to.",
+  31: "Heaven and earth existing, all (material) things then got their existence. All (material) things having existence, afterwards there came male and female. From the existence of male and female there came afterwards husband and wife. From husband and wife there came father and son. From father and son there came ruler and minister. From ruler and minister there came high and low. When (the distinction of) high and low had existence, afterwards came the arrangements of propriety and righteousness. The rule for the relation of husband and wife is that it should be long-enduring. Hence Hsien is followed by Hang. Hang denotes long enduring.",
+  32: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan.",
+  33: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan.",
+  34: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan.",
+  35: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan.",
+  36: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan.",
+  37: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease.",
+  38: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease.",
+  39: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease.",
+  40: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting.",
+  41: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting.",
+  42: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting.",
+  43: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting.",
+  44: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing.",
+  45: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing.",
+  46: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing.",
+  47: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing.",
+  48: "What happens under Zing requires to be changed, and hence it is followed by Ko (denoting change).",
+  49: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  50: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  51: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  52: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  53: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  54: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great.",
+  55: "He whose greatness reaches the utmost possibility, is sure to lose his dwelling; and hence Fang is succeeded by Lu (denoting travellers or strangers). We have in it the idea of strangers who have no place to receive them, and hence Lu is followed by Sun, which gives the idea of (penetrating and) entering.",
+  56: "He whose greatness reaches the utmost possibility, is sure to lose his dwelling; and hence Fang is succeeded by Lu (denoting travellers or strangers). We have in it the idea of strangers who have no place to receive them, and hence Lu is followed by Sun, which gives the idea of (penetrating and) entering.",
+  57: "One enters (on the pursuit of his object), and afterwards has pleasure in it; hence Sun is followed by Tui. Tui denotes pleasure and satisfaction. This pleasure and satisfaction (begins) afterwards to be dissipated, and hence Tui is followed by Hwan, which denotes separation and division.",
+  58: "One enters (on the pursuit of his object), and afterwards has pleasure in it; hence Sun is followed by Tui. Tui denotes pleasure and satisfaction. This pleasure and satisfaction (begins) afterwards to be dissipated, and hence Tui is followed by Hwan, which denotes separation and division.",
+  59: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo.",
+  60: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo.",
+  61: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo.",
+  62: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close.",
+  63: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close.",
+  64: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close.",
+};
+
+/**
+ * Legge Appendix VII — Treatise on the Mixed Hexagrams (雜卦傳).
+ * 46 rhymed couplets — Legge's transmission pairs differently from the
+ * 53-entry ctext source order used by ZA_GUA, so this index is kept
+ * separate rather than backfilled onto ZA_GUA[i].textEn.
+ *
+ * Anomaly: hex 39 (Kien) appears in entry tagged pair=[41]; hex 49 (Ko)
+ * appears in pair=[50,51]. Both mislabellings are inherited from SBE16
+ * typography per the pull's documented anomalies.
+ */
+export const LEGGE_ZAGUA_EN: { pair: number[]; text: string }[] = [
+  { pair: [1, 2], text: "Strength in Khien, weakness in Khwan we find." },
+  { pair: [8, 7], text: "Pi shows us joy, and Sze the anxious mind." },
+  { pair: [19, 20], text: "Lin gives, Kwan seeks;—such are the several themes Their different figures were to teach designed." },
+  { pair: [3], text: "Kun manifests itself, yet keeps its place" },
+  { pair: [4], text: "'Mid darkness still, to light Mang sets its face." },
+  { pair: [51, 52], text: "Kan starts; Kan stops." },
+  { pair: [41, 42], text: "In Sun and Yi are seen How fulness and decay their course begin." },
+  { pair: [26], text: "Ta Khu keeps still, and waits the proper time." },
+  { pair: [25], text: "Wu Wang sets forth how evil springs from crime." },
+  { pair: [45, 46], text: "Good men in Zhui collect; in Shang they rise:" },
+  { pair: [15, 16], text: "Khien itself, Yu others doth despise." },
+  { pair: [21, 22], text: "Shih Ho takes eating for its theme; and Pi Takes what is plain, from ornament quite free." },
+  { pair: [58, 57], text: "Tui shows its scope, but Sun's we do not see." },
+  { pair: [17, 18], text: "Sui quits the old; Ku makes a new decree." },
+  { pair: [23], text: "We see in Po its subject worn away" },
+  { pair: [24], text: "And Fu shows its recovering from decay." },
+  { pair: [35], text: "Above in Zin the sun shines clear and bright" },
+  { pair: [36], text: "But in Ming I 'tis hidden from the sight." },
+  { pair: [48, 47], text: "Progress in Zing in Khwan encounters blight." },
+  { pair: [31], text: "Effect quick answering cause in Hsien appears" },
+  { pair: [32], text: "While Hang denotes continuance for years." },
+  { pair: [59, 60], text: "Hwan scatters; but Zieh its code of rules uprears." },
+  { pair: [40], text: "Relief and ease with Kieh are sure to come" },
+  { pair: [41], text: "Hard toil and danger have in Kien their home." },
+  { pair: [38], text: "Khwei looks on others as beyond its care" },
+  { pair: [37], text: "Kia Zan all includes within its sphere." },
+  { pair: [12, 11], text: "While Phi and Thai their different scopes prefer," },
+  { pair: [34, 33], text: "Ta Kwang stops here as right; withdraws Thun there." },
+  { pair: [14], text: "Ta Yu adhering multitudes can show" },
+  { pair: [13], text: "Thung Zan reflects their warm affection's glow." },
+  { pair: [50, 51], text: "Ting takes what's new; the old is left by Ko." },
+  { pair: [61, 62], text: "Sincere is Kung Fu; but exceeds, Hsiao Kwo." },
+  { pair: [55, 56], text: "Fang tells of trouble; Lu can boast few friends." },
+  { pair: [30, 29], text: "Fire mounts in Li; water in Khan descends." },
+  { pair: [9], text: "Hsiao Khu with few 'gainst many foes contends." },
+  { pair: [10], text: "Movement in Li, unresting, never ends." },
+  { pair: [5], text: "Hsu shows its subject making no advance:" },
+  { pair: [6], text: "In Sung we seek in vain a friendly glance" },
+  { pair: [28], text: "And Ta Kwo's overthrown with sad mischance." },
+  { pair: [44], text: "Kau shows a meeting, where the many strong Are met by one that's weak, yet struggles long." },
+  { pair: [53], text: "In Kien we see a bride who will delay To move until the bridegroom takes his way." },
+  { pair: [27], text: "Body and mind are nourished right in I" },
+  { pair: [63], text: "All things are well established in Ki Zi." },
+  { pair: [54], text: "Kwei Mei reveals how ends the virgin life" },
+  { pair: [64], text: "Wei Zi how fails the youth (to get a wife)." },
+  { pair: [43], text: "The strong disperse the weak; Kwai teaches so. Prospers the good man's way; to grief all small men go." },
+];
+
+/**
+ * Reverse index for LEGGE_ZAGUA_EN — hex 1..64 → Legge couplet text.
+ *
+ * Two documented Legge typography anomalies have entries whose `pair[]`
+ * tags don't match their actual content:
+ *
+ *   pair=[41]    — content describes Kien alone (hex 39, single-hex)
+ *   pair=[50,51] — content describes Ko + Ting   (hexes 49 + 50, couplet)
+ *
+ * A naive iteration would let these anomalous entries OVERWRITE the
+ * legitimate mappings for hex 41 (Sun/I couplet) and hex 51 (Chen/Ken
+ * couplet). Instead we recognize the anomalous pair-tags and route their
+ * text to the hexagrams the content actually describes. After this fix
+ * all 64 hexes get a Legge couplet via this index.
+ */
+export const LEGGE_ZAGUA_BY_HEX: Record<number, string> = (() => {
+  const idx: Record<number, string> = {};
+  const ANOMALY_REROUTE: Record<string, number[]> = {
+    "[41]": [39],
+    "[50,51]": [49, 50],
+  };
+  for (const entry of LEGGE_ZAGUA_EN) {
+    const key = `[${entry.pair.join(",")}]`;
+    const reroute = ANOMALY_REROUTE[key];
+    const targets = reroute ?? entry.pair;
+    for (const hex of targets) {
+      idx[hex] = entry.text;
+    }
+  }
+  return idx;
+})();
+
+/**
+ * Legge Appendix V — Treatise on the Trigrams (說卦傳).
+ * Legge numbered 22 paragraphs across his rendering; this differs from
+ * the conventional 11-chapter division used by SHUO_GUA.chapters, so we
+ * keep Legge's numbering rather than force-fit.
+ */
+export const LEGGE_SHUOGUA_EN: Record<number, string> = {
+  1: "Anciently, when the sages made the Yi, in order to give mysterious assistance to the spiritual Intelligences, they produced (the rules for the use of) the divining plant.",
+  2: "The number 3 was assigned to heaven, 2 to earth, and from these came the (other) numbers.",
+  3: "They contemplated the changes in the divided and undivided lines (by the process of manipulating the stalks), and formed the trigrams; from the movements that took place in the strong and weak lines, they produced (their teaching about) the separate lines. There ensued a harmonious conformity to the course (of duty) and to virtue, with a discrimination of what was right (in each particular case). They (thus) made an exhaustive discrimination of what was right, and effected the complete development of (every) nature, till they arrived (in the Yi) at what was appointed for it (by Heaven).",
+  4: "Anciently, when the sages made the Yi, it was with the design that (its figures) should be in conformity with the principles underlying the natures (of men and things), and the ordinances (for them) appointed (by Heaven). With this view they exhibited (in them) the way of heaven, calling (the lines) yin and yang; the way of earth, calling (them) the weak (or soft) and the strong (or hard); and the way of men, under the names of benevolence and righteousness. Each (trigram) embraced (those) three Powers; and, being repeated, its full form consisted of six lines. A distinction was made of (the places assigned) to the yin and yang lines, which were variously occupied, now by the strong and now by the weak forms, and thus the figure (of each hexagram) was completed.",
+  5: "(The symbols of) heaven and earth received their determinate positions; (those for) mountains and collections of water interchanged their influences; (those for) thunder and wind excited each other the more; and (those for) water and fire did each other no harm. (Then) among these eight symbols there was a mutual communication.",
+  6: "The numbering of the past is a natural process.; the knowledge of the coming is anticipation. Therefore in the Yi we have (both) anticipation (and the natural process).",
+  7: "Thunder serves to put things in motion; wind to scatter (the genial seeds of) them; rain to moisten them; the sun to warm them; (what is symbolised by) Kan, to arrest (and keep them in their places); (by) Tui, to give them joyful course; (by) Khien, to rule them; and by Khwan, to store them up.",
+  8: "God comes forth in Kan (to His producing work); He brings (His processes) into full and equal action in Sun; they are manifested to one another in Li; the greatest service is done for Him in Khwan; He rejoices in Tui; He struggles in Khien; He is comforted and enters into rest in Khan; and He completes (the work of the year) in Kan.",
+  9: "All things are made to issue forth in Kan, which is placed at the east. (The processes of production) are brought into full and equal action in Sun, which is placed at the south-east. The being brought into full and equal action refers to the purity and equal arrangement of all things. Li gives the idea of brightness. All things are now made manifest to one another. It is the trigram of the south. The sages turn their faces to the south when they give audience to all under the sky, administering government towards the region of brightness:—the idea in this procedure was taken from this. Khwan denotes the earth, (and is placed at the south-west). All things receive from it their fullest nourishment, and hence it is said, 'The greatest service is done for Him in Khwan.' Tui corresponds (to the west) and to the autumn,—the season in which all things rejoice. Hence it is said, 'He rejoices in Tui.' He struggles in Khien, which is the trigram of the north-west. The idea is that there the inactive and active conditions beat against each other. Khan denotes water. It is the trigram of the exact north,—the trigram of comfort and rest, what all things are tending to. Hence it is said, 'He is comforted and enters into rest in Khan. Kan is the trigram of the north-east. In it all things bring to a full end the issues of the past (year), and prepare the commencement of the next. Hence it is said, 'He completes (the work of the year) in Kan.'",
+  10: "When we speak of Spirit we mean the subtle (presence and operation of God) with all things. For putting all things in motion there is nothing more vehement than thunder; for scattering them there is nothing more effective than wind; for drying them up there is nothing more parching than fire; for giving them pleasure and satisfaction there is nothing more grateful than a lake or marsh; for moistening them there is nothing more enriching than water; for bringing them to an end and making them begin again there is nothing more fully adapted than Kan. Thus water and fire contribute together to the one object; thunder and wind do not act contrary to each other; mountains and collections of water interchange their influences. It is in this way, that they are able to change and transform, and to give completion to all things.",
+  11: "Khien is (the symbol of) strength; Khwan, of docility; Kan, of stimulus to movement; Sun, of penetration; Khan, of what is precipitous and perilous; Li, of what is bright and what is catching; Kan, of stoppage or arrest; and Tui, of pleasure and satisfaction.",
+  12: "Khien (suggests the idea of) a horse; Khwan, that of an ox; Kan, that of the dragon; Sun, that of a fowl; Khan, that of a pig; Li, that of a pheasant; Kan, that of a dog; and Tui, that of a sheep.",
+  13: "Khien suggests the idea of the head; Khwan, that of the belly; Kan, that of the feet Sun, that of the thighs; Khan, that of the cars Li, that of the eyes; Kan, that of the hands and Tui, that of the mouth.",
+  14: "Khien is (the symbol of) heaven, and hence has the appellation of father. Khwan is (the symbol of) earth, and hence has the appellation of mother, Kan shows a first application (of Khwan to Khien), resulting in getting (the first of) its male (or undivided lines), and hence is called 'the oldest son.' Sun shows a first application (of Khien to Khwan), resulting in getting (the first of) its female (or divided lines), and hence is called 'the oldest daughter.' Khan shows a second application (of Khwan to Khien), resulting in getting (the second of) its male (or undivided lines), and hence is called 'the second son.' Li shows a second application (of Khien to Khwan), resulting in getting the second of its female (or divided lines), and hence is called 'the second daughter.' Kan shows a third application (of Khwan to Khien), resulting in getting (the third of) its male (or undivided lines), and hence is called 'the youngest son.' Tui shows a third application (of Khien to Khwan), resulting in getting (the third of) its female (or divided lines), and hence is called 'the youngest daughter.'",
+  15: "Khien suggests the idea of heaven; of a circle; of a ruler; of a father; of jade; of metal; of cold; of ice; of deep red; of a good horse; of an old horse; of a thin horse; of a piebald horse; and of the fruit of trees.",
+  16: "Khwan suggests the idea of the earth; of a mother; of cloth; of a caldron; of parsimony; of a turning lathe; of a young heifer; of a large waggon; of what is variegated; of a multitude; and of a handle and support. Among, soils it denotes what is black.",
+  17: "Kan suggests the idea of thunder; of the dragon; of (the union of) the azure and the yellow; of development; of a great highway; of the eldest son; of decision and vehemence; of bright young bamboos; of sedges and rushes; among horses, of the good neigher; of one whose white hind-leg appears, of the prancer, and of one with a white star in his forehead. Among the productions of husbandry it suggests the idea of what returns to life from its disappearance (beneath the surface), of what in the end becomes the strongest, and of what is the most luxuriant.",
+  18: "Sun suggests the idea of wood; of wind; of the oldest daughter; of a plumb-line; of a carpenter's square; of being white; of being long; of being lofty; of advancing and receding; of want of decision; and of strong scents. It suggests in the human body, the idea of deficiency of hair; of a wide forehead; of a large development of the white of the eye. (Among tendencies), it suggests the close pursuit of gain, even to making three hundred per cent in the market. In the end it may become the trigram of decision.",
+  19: "Khan suggests the idea of water; of channels and ditches (for draining and irrigation); of being hidden and lying concealed; of being now straight, and now crooked; of a bow, and of a wheel. As referred to man, it suggests the idea of an increase of anxiety; of distress of mind; of pain in the ears;—it is the trigram of the blood; it suggests the idea of what is red. As referred to horses, it suggests the idea of the horse with an elegant spine; of one with a high spirit; of one with a drooping head; of one with a thin hoof; and of one with a shambling step. As referred to carriages, it suggests one that encounters many risks. It suggests what goes right through; the moon; a thief. Referred to trees, it suggests that which is strong, and firm-hearted.",
+  20: "Li suggests the emblem of fire; of the sun; of lightning; of the second daughter; of buff-coat and helmet; of spear and sword. Referred to men, it suggests the large belly. It is the trigram of dryness. It suggests the emblem of a turtle; of a crab; of a spiral univalve; of the mussel; and of the tortoise. Referred to trees, it suggests one which is hollow and rotten above.",
+  21: "Kan suggests the emblem of a mountain; of a by-path; of a small rock; of a gateway; of the fruits of trees and creeping plants; of a porter or a eunuch; of the (ring) finger; of the dog; of the rat; of birds with powerful bills; among trees, of those which are strong, with many joints.",
+  22: "Tui suggests the emblem of a low-lying collection of water; of the youngest daughter; of a sorceress; of the mouth and tongue; of the decay and putting down (of things in harvest); of the removal (of fruits) hanging (from the stems or branches); among soils, of what is strong and salt; of a concubine; and of a sheep.",
+};
+
+export const LEGGE_META = {
+  source: "archive.org SBE16 plaintext OCR (primary; canonical Legge line phrasing), Wikisource Sacred_Books_of_the_East/Volume_16 (secondary cross-check, source for hex 1 & 2 paragraph 7), baharna.com Legge reproduction (existing structure preserved after blocker fixes)",
+  license: "public domain — James Legge d.1897, Sacred Books of the East Vol XVI published 1882 (second edition 1899)",
+} as const;
diff --git a/packages/core/src/data/shuogua.ts b/packages/core/src/data/shuogua.ts
new file mode 100644
index 0000000..cfc7646
--- /dev/null
+++ b/packages/core/src/data/shuogua.ts
@@ -0,0 +1,245 @@
+import type {
+  DerivedType,
+  ShuoguaChapter,
+  ShuoguaDerivationContext,
+  TrigramAssoc,
+} from "../types.js";
+
+/**
+ * 說卦傳 — Discussion of the Trigrams.
+ *
+ * One of the Ten Wings of the I Ching. Composed ~5th-3rd century BCE
+ * (Warring States / early Han); transmitted with the Yijing for over
+ * 2,200 years. Public domain.
+ *
+ * Eleven chapters in the standard 王弼 / 孔穎達 division (周易正義):
+ * - ch 1-3: cosmological framing — sages, yin-yang, three powers
+ * - ch 4-6: trigram motion, seasonal cycle, summary
+ * - ch 7:   core attributes (健順動入陷麗止說)
+ * - ch 8:   animal associations (馬牛龍雞豕雉狗羊)
+ * - ch 9:   body part associations (首腹足股耳目手口)
+ * - ch 10:  family role associations (父母三男三女) via the 索 scheme
+ * - ch 11:  extended polysemous associations — the richest catalogue
+ *
+ * Source: ctext.org/book-of-changes/shuo-gua/zh (primary), cross-checked
+ * against zh.wikisource.org and 3 other PD I Ching repos.
+ */
+export const SHUO_GUA: { chapters: ShuoguaChapter[] } = {
+  chapters: [
+    {
+      n: 1,
+      text: "昔者聖人之作《易》也，幽贊於神明而生蓍，參天兩地而倚數，觀變於陰陽而立卦，發揮於剛柔而生爻，和順於道德而理於義，窮理盡性以至於命。",
+      modernEn: "In ancient times, when the sages made the Yi, they gave hidden aid to spirit-brightness and brought forth the milfoil. They took heaven as three and earth as two, relied on number, observed change through yin and yang, set up the hexagrams, unfolded firm and yielding into lines, harmonized with dao and virtue, ordered things by rightness, and exhausted principle and nature until they reached what is allotted as fate.",
+    },
+    {
+      n: 2,
+      text: "昔者聖人之作《易》也，將以順性命之理，是以立天之道曰陰與陽，立地之道曰柔與剛，立人之道曰仁與義。兼三才而兩之，故《易》六畫而成卦。分陰分陽，迭用柔剛，故《易》六位而成章。",
+      modernEn: "When the sages made the Yi, they meant it to accord with the principles of nature and mandate. They named the way of heaven yin and yang, the way of earth yielding and firm, and the way of human beings benevolence and rightness. Combining the three powers and doubling them, the Yi forms hexagrams from six strokes; dividing yin from yang and alternating yielding with firm, the six positions become a patterned whole.",
+    },
+    {
+      n: 3,
+      text: "天地定位，山澤通氣，雷風相薄，水火不相射，八卦相錯。數往者順，知來者逆，是故《易》逆數也。",
+      modernEn: "Heaven and earth settle their positions; mountain and lake exchange breath; thunder and wind press on one another; water and fire do not strike each other. The eight trigrams interlace. To count what has gone is to follow the sequence; to know what is coming is to move against it. Therefore the Yi counts by reversal.",
+    },
+    {
+      n: 4,
+      text: "雷以動之，風以散之，雨以潤之，日以烜之，艮以止之，兌以說之，乾以君之，坤以藏之。",
+      modernEn: "Thunder moves things, wind disperses them, rain moistens them, and the sun warms them. Gen stops them, Dui gladdens them, Qian governs them, and Kun stores them away.",
+    },
+    {
+      n: 5,
+      text: "帝出乎震，齊乎巽，相見乎離，致役乎坤，說言乎兌，戰乎乾，勞乎坎，成言乎艮。萬物出乎震，震東方也。齊乎巽，巽東南也，齊也者，言萬物之絜齊也。離也者，明也，萬物皆相見，南方之卦也。聖人南面而聽天下，嚮明而治，蓋取諸此也。坤也者，地也，萬物皆致養焉，故曰致役乎坤。兌，正秋也，萬物之所說也，故曰說言乎兌。戰乎乾，乾，西北之卦也，言陰陽相薄也。坎者，水也，正北方之卦也，勞卦也，萬物之所歸也，故曰勞乎坎。艮，東北之卦也，萬物之所成終而所成始也，故曰成言乎艮。",
+      modernEn: "The Lord comes forth in Zhen, brings things into order in Xun, makes them visible in Li, sends them into service in Kun, rejoices in words in Dui, struggles in Qian, toils in Kan, and completes the saying in Gen. All things emerge in Zhen, the east; become even and purified in Xun, the southeast; appear to one another in Li, brightness and the south. The sage faces south and governs toward brightness from this image. Kun is earth, where all things receive nourishment. Dui is true autumn, where things rejoice. Qian is the northwest, where yin and yang press against each other. Kan is water and true north, the trigram of toil and return. Gen is the northeast, where things complete their end and begin again.",
+    },
+    {
+      n: 6,
+      text: "神也者，妙萬物而為言者也。動萬物者莫疾乎雷，橈萬物者莫疾乎風，燥萬物者莫熯乎火，說萬物者莫說乎澤，潤萬物者莫潤乎水，終萬物始萬物者莫盛乎艮。故水火相逮，雷風不相悖，山澤通氣，然後能變化，既成萬物也。",
+      modernEn: "Spirit means the subtle working by which the ten thousand things are spoken of. Nothing moves things more swiftly than thunder, bends them more swiftly than wind, dries them more intensely than fire, gladdens them more than lake, moistens them more than water, or ends and begins them more fully than Gen. Thus water and fire reach one another, thunder and wind do not oppose one another, mountain and lake exchange breath; only then can transformation occur and the ten thousand things be completed.",
+    },
+    {
+      n: 7,
+      text: "乾，健也；坤，順也；震，動也；巽，入也；坎，陷也；離，麗也；艮，止也；兌，說也。",
+      modernEn: "Qian is strength; Kun is yielding; Zhen is movement; Xun is entering; Kan is pitfall; Li is clinging brightness; Gen is stopping; Dui is joy.",
+    },
+    {
+      n: 8,
+      text: "乾為馬，坤為牛，震為龍，巽為雞，坎為豕，離為雉，艮為狗，兌為羊。",
+      modernEn: "Qian is horse; Kun is ox; Zhen is dragon; Xun is rooster; Kan is pig; Li is pheasant; Gen is dog; Dui is sheep.",
+    },
+    {
+      n: 9,
+      text: "乾為首，坤為腹，震為足，巽為股，坎為耳，離為目，艮為手，兌為口。",
+      modernEn: "Qian is head; Kun is belly; Zhen is foot; Xun is thigh; Kan is ear; Li is eye; Gen is hand; Dui is mouth.",
+    },
+    {
+      n: 10,
+      text: "乾，天也，故稱乎父；坤，地也，故稱乎母。震一索而得男，故謂之長男；巽一索而得女，故謂之長女。坎再索而得男，故謂之中男；離再索而得女，故謂之中女。艮三索而得男，故謂之少男；兌三索而得女，故謂之少女。",
+      modernEn: "Qian is heaven, and so is called father; Kun is earth, and so is called mother. Zhen is the male obtained in the first seeking, and is called the eldest son; Xun is the female obtained in the first seeking, and is called the eldest daughter. Kan is the male obtained in the second seeking, the middle son; Li is the female obtained in the second seeking, the middle daughter. Gen is the male obtained in the third seeking, the youngest son; Dui is the female obtained in the third seeking, the youngest daughter.",
+    },
+    {
+      n: 11,
+      text: "乾為天，為圜，為君，為父，為玉，為金，為寒，為冰，為大赤，為良馬，為老馬，為瘠馬，為駁馬，為木果。坤為地，為母，為布，為釜，為吝嗇，為均，為子母牛，為大輿，為文，為眾，為柄，其於地也為黑。震為雷，為龍，為玄黃，為敷，為大塗，為長子，為決躁，為蒼筤竹，為萑葦；其於馬也，為善鳴，為馵足，為作足，為的顙；其於稼也，為反生；其究為健，為蕃鮮。巽為木，為風，為長女，為繩直，為工，為白，為長，為高，為進退，為不果，為臭；其於人也，為寡髮，為廣顙，為多白眼，為近利市三倍；其究為躁卦。坎為水，為溝瀆，為隱伏，為矯輮，為弓輪；其於人也，為加憂，為心病，為耳痛，為血卦，為赤；其於馬也，為美脊，為亟心，為下首，為薄蹄，為曳；其於輿也，為多眚，為通，為月，為盜；其於木也，為堅多心。離為火，為日，為電，為中女，為甲冑，為戈兵；其於人也，為大腹；為乾卦，為鱉，為蟹，為蠃，為蚌，為龜；其於木也，為科上槁。艮為山，為徑路，為小石，為門闕，為果蓏，為閽寺，為指，為狗，為鼠，為黔喙之屬；其於木也，為堅多節。兌為澤，為少女，為巫，為口舌，為毀折，為附決；其於地也，為剛鹵；為妾，為羊。",
+      modernEn: "Qian is heaven, roundness, ruler, father, jade, metal, cold, ice, deep red, good horse, old horse, lean horse, piebald horse, and tree fruit. Kun is earth, mother, cloth, cauldron, frugality, leveling, cow with calf, great cart, pattern, multitude, handle; among lands it is black. Zhen is thunder, dragon, dark-yellow, spreading growth, great road, eldest son, decisive agitation, young green bamboo, reeds and rushes; among horses it is good neighing, raised hind foot, active foot, white forehead; among crops it is reverse growth; at its extreme it becomes strength and fresh abundance. Xun is wood, wind, eldest daughter, plumb line, craft, white, long, high, advancing and retreating, irresolution, smell; in people it is sparse hair, broad forehead, much white in the eyes, and profit-seeking in the market; at its extreme it becomes an agitated trigram. Kan is water, ditches, hiddenness, bending, bow and wheel; in people it is added worry, heart sickness, ear pain, blood, and red; among horses it is beautiful spine, urgent heart, lowered head, thin hoof, and dragging step; for carts it is many faults, passage, moon, and thief; among trees it is firm with much heartwood. Li is fire, sun, lightning, middle daughter, armor and helmet, weapons; in people it is a large belly; it is dryness, turtle, crab, snail, clam, tortoise; among trees it is hollow above and withered. Gen is mountain, path, small stone, gate tower, fruit on vines, gatekeeper, finger, dog, rat, and black-beaked creatures; among trees it is firm with many joints. Dui is lake, youngest daughter, shaman, mouth and tongue, breaking and severing, attached decision; among lands it is hard and salty; it is concubine and sheep.",
+    },
+  ],
+};
+
+export const SHUOGUA_DERIVATION_CONTEXT: Record<DerivedType, ShuoguaDerivationContext> = {
+  nuclear: {
+    chapter: 3,
+    title: "Inner trigram exchange",
+    relevance: "The nuclear hexagram is built from the cast's inner line structure. Chapter 3 describes the trigrams as relational forces that exchange breath, press on one another, and interlace, so it grounds reading the hidden hexagram as an inner configuration rather than a separate oracle.",
+  },
+  polarity: {
+    chapter: 2,
+    title: "Yin-yang reversal",
+    relevance: "Polarity flips every line. Chapter 2 names yin and yang as the way of heaven and yielding and firm as the way of earth, so it grounds the polarity hexagram as a full reversal along the Yi's primary complementary axis.",
+  },
+  mirror: {
+    chapter: 6,
+    title: "Changed vantage",
+    relevance: "The mirror hexagram reverses the figure's orientation. Chapter 6 says transformation happens when paired forces reach, answer, and do not oppose one another, so it grounds mirror as a changed vantage within the same field of relations.",
+  },
+  becoming: {
+    chapter: 7,
+    title: "Operational quality",
+    relevance: "The becoming hexagram is where moving lines carry the cast. Chapter 7 gives each trigram its operative quality, so it grounds becoming as a change in how the situation acts.",
+  },
+  diagonal: {
+    chapter: 6,
+    title: "Farthest transformed view",
+    relevance: "The diagonal combines mirror and polarity. Chapter 6 grounds this compound relation because it frames transformation as the coordination of opposed forces into completed change.",
+  },
+};
+
+/**
+ * Structured trigram catalogue from 說卦 chapters 7–11, keyed by
+ * trigram zh character.
+ *
+ * Canonical fields (image, family, body, animal, direction, attribute,
+ * extendedImages) are normalized to the pure canonical character per
+ * 說卦 ch.7-10 — phonological variants and alternate images live in
+ * `extendedImages` (e.g. 巽 carries both 風 and 木 there).
+ *
+ * Optional fields (season, cosmologicalRole, other) are editorial
+ * synthesis with English glosses in parens — UI must label as derived.
+ */
+export const TRIGRAM_ASSOC: Record<string, TrigramAssoc> = {
+  // qian — 乾
+  "乾": {
+    image: "天",
+    family: "父",
+    body: "首",
+    animal: "馬",
+    direction: "西北",
+    attribute: "健",
+    extendedImages: ["天", "圜", "君", "父", "玉", "金", "寒", "冰", "大赤", "良馬", "老馬", "瘠馬", "駁馬", "木果"],
+    season: "立冬之際 (late autumn / early winter)",
+    cosmologicalRole: "戰乎乾 (battle / clash of yin-yang)",
+    other: "乾以君之 (Qian rules as sovereign)",
+  },
+  // kun — 坤
+  "坤": {
+    image: "地",
+    family: "母",
+    body: "腹",
+    animal: "牛",
+    direction: "西南",
+    attribute: "順",
+    extendedImages: ["地", "母", "布", "釜", "吝嗇", "均", "子母牛", "大輿", "文", "眾", "柄", "黑 (其於地也)"],
+    season: "late summer (transition)",
+    cosmologicalRole: "致役乎坤 (all things receive nourishment)",
+    other: "坤以藏之 (Kun stores / conceals)",
+  },
+  // zhen — 震
+  "震": {
+    image: "雷",
+    family: "長男",
+    body: "足",
+    animal: "龍",
+    direction: "東",
+    attribute: "動",
+    extendedImages: ["雷", "龍", "玄黃", "敷", "大塗", "長子", "決躁", "蒼筤竹", "萑葦", "善鳴馬", "馵足馬", "作足馬", "的顙馬", "反生 (稼)", "健", "蕃鮮"],
+    season: "spring",
+    cosmologicalRole: "帝出乎震 (the Lord issues forth from Zhen)",
+    other: "震一索而得男，故謂之長男；雷以動之",
+  },
+  // xun — 巽
+  "巽": {
+    image: "風",
+    family: "長女",
+    body: "股",
+    animal: "雞",
+    direction: "東南",
+    attribute: "入",
+    extendedImages: ["木", "風", "長女", "繩直", "工", "白", "長", "高", "進退", "不果", "臭", "寡髮", "廣顙", "多白眼", "近利市三倍", "躁卦 (其究)"],
+    season: "late spring / early summer",
+    cosmologicalRole: "齊乎巽 (all things become uniform / clean)",
+    other: "巽一索而得女，故謂之長女；風以散之",
+  },
+  // kan — 坎
+  "坎": {
+    image: "水",
+    family: "中男",
+    body: "耳",
+    animal: "豕",
+    direction: "北",
+    attribute: "陷",
+    extendedImages: ["水", "溝瀆", "隱伏", "矯輮", "弓輪", "加憂", "心病", "耳痛", "血卦", "赤", "美脊馬", "亟心馬", "下首馬", "薄蹄馬", "曳馬", "多眚 (輿)", "通", "月", "盜", "堅多心 (木)"],
+    season: "winter (正北方)",
+    cosmologicalRole: "勞乎坎 (place of toil / where all things return)",
+    other: "坎再索而得男，故謂之中男；雨以潤之 / 潤萬物者莫潤乎水",
+  },
+  // li — 離
+  "離": {
+    image: "火",
+    family: "中女",
+    body: "目",
+    animal: "雉",
+    direction: "南",
+    attribute: "麗",
+    extendedImages: ["火", "日", "電", "中女", "甲冑", "戈兵", "大腹", "乾卦 (drying)", "鱉", "蟹", "蠃", "蚌", "龜", "科上槁 (木)"],
+    season: "summer",
+    cosmologicalRole: "相見乎離 (all things see one another)",
+    other: "離再索而得女，故謂之中女；日以烜之 / 燥萬物者莫熯乎火",
+  },
+  // gen — 艮
+  "艮": {
+    image: "山",
+    family: "少男",
+    body: "手",
+    animal: "狗",
+    direction: "東北",
+    attribute: "止",
+    extendedImages: ["山", "徑路", "小石", "門闕", "果蓏", "閽寺", "指", "狗", "鼠", "黔喙之屬", "堅多節 (木)"],
+    season: "late winter / early spring (transition)",
+    cosmologicalRole: "成言乎艮 (all things complete and begin anew)",
+    other: "艮三索而得男，故謂之少男；艮以止之 / 終萬物始萬物者莫盛乎艮",
+  },
+  // dui — 兌
+  "兌": {
+    image: "澤",
+    family: "少女",
+    body: "口",
+    animal: "羊",
+    direction: "西",
+    attribute: "說",
+    extendedImages: ["澤", "少女", "巫", "口舌", "毀折", "附決", "剛鹵 (其於地也)", "妾", "羊"],
+    season: "正秋 (mid-autumn)",
+    cosmologicalRole: "說言乎兌 (all things rejoice)",
+    other: "兌三索而得女，故謂之少女；兌以說之 / 說萬物者莫說乎澤",
+  },
+};
+
+export const SHUO_GUA_META = {
+  source: "https://ctext.org/book-of-changes/shuo-gua/zh (Chinese Text Project — primary)",
+  crossChecks: [
+    "https://ctext.org/book-of-changes/shuo-gua",
+    "https://www.eee-learning.com/book/eee67 (易學網)",
+    "https://zhouyipro.com/shuogua.html",
+    "https://www.yilusoso.com/yjrm/971/",
+    "zh.wikisource.org 周易 / 周易正義 transmissions",
+  ],
+  license: "ancient classical Chinese, public domain (work composed before 200 BCE; over 2,200 years old)",
+  chapterCount: 11,
+} as const;
diff --git a/packages/core/src/data/trigrams.ts b/packages/core/src/data/trigrams.ts
index 8025825..5c449dd 100644
--- a/packages/core/src/data/trigrams.ts
+++ b/packages/core/src/data/trigrams.ts
@@ -1,18 +1,23 @@
-import type { Style, DerivedType, TrigramInfo } from "../types.js";
+import type { Style, QuoteStyle, DerivedType, TrigramInfo } from "../types.js";
+import { TRIGRAM_ASSOC } from "./shuogua.js";
 
 export const TRIGRAMS: TrigramInfo[] = [
-  { n: "坤", img: "earth", sym: "☷" }, // 0: 000
-  { n: "震", img: "thunder", sym: "☳" }, // 1: 001
-  { n: "坎", img: "water", sym: "☵" }, // 2: 010
-  { n: "兌", img: "lake", sym: "☱" }, // 3: 011
-  { n: "艮", img: "mountain", sym: "☶" }, // 4: 100
-  { n: "離", img: "fire", sym: "☲" }, // 5: 101
-  { n: "巽", img: "wind", sym: "☴" }, // 6: 110
-  { n: "乾", img: "heaven", sym: "☰" }, // 7: 111
+  { n: "坤", img: "earth", sym: "☷", assoc: TRIGRAM_ASSOC["坤"] }, // 0: 000
+  { n: "震", img: "thunder", sym: "☳", assoc: TRIGRAM_ASSOC["震"] }, // 1: 001
+  { n: "坎", img: "water", sym: "☵", assoc: TRIGRAM_ASSOC["坎"] }, // 2: 010
+  { n: "兌", img: "lake", sym: "☱", assoc: TRIGRAM_ASSOC["兌"] }, // 3: 011
+  { n: "艮", img: "mountain", sym: "☶", assoc: TRIGRAM_ASSOC["艮"] }, // 4: 100
+  { n: "離", img: "fire", sym: "☲", assoc: TRIGRAM_ASSOC["離"] }, // 5: 101
+  { n: "巽", img: "wind", sym: "☴", assoc: TRIGRAM_ASSOC["巽"] }, // 6: 110
+  { n: "乾", img: "heaven", sym: "☰", assoc: TRIGRAM_ASSOC["乾"] }, // 7: 111
 ];
 
-export const STYLES: Style[] = ["dx", "tu", "en", "te", "w", "st"];
-export const QUOTE_STYLES: Style[] = ["dx", "tu", "en", "te", "w"];
+export const STYLES: Style[] = ["dx", "tu", "en", "te", "w", "st", "gc"];
+// QUOTE_STYLES intentionally excludes "st" (synthetic structure path) and
+// "gc" (root oracle, not a random-quotable lineage). Typed as QuoteStyle[]
+// so consumers like getRandomQuoteStyle return the narrower type without
+// casts. See types.ts Style for rationale.
+export const QUOTE_STYLES: QuoteStyle[] = ["dx", "tu", "en", "te", "w"];
 
 export const DERIVED_LABELS: Record<DerivedType, string> = {
   nuclear: "互卦 (hidden within)",
@@ -30,3 +35,37 @@ export const DERIVED_LABELS_CN: Record<DerivedType, string> = {
   becoming: "之卦 (所往)",
   diagonal: "對角卦 (極反)",
 };
+
+/**
+ * Short English glosses for the structured 說卦 trigram catalogue.
+ *
+ * Project-authored — NOT from Legge, NOT from Wilhelm/Baynes, NOT
+ * derivable from any canonical English translation. These are short
+ * single-word labels chosen by the project to surface the canonical zh
+ * fields to English-only readers in UI displays.
+ *
+ * UI MUST label these as "project gloss" (or equivalent) wherever they
+ * render — they are not canonical 說卦 content. The canonical zh fields
+ * always remain the source of truth; these are a convenience layer.
+ *
+ * Excludes `extendedImages` (no terse English equivalent for a 14-item
+ * polysemous catalogue — render in zh per the U6 cast surface).
+ */
+export interface TrigramAssocGloss {
+  family: string;
+  body: string;
+  animal: string;
+  direction: string;
+  attribute: string;
+}
+
+export const TRIGRAM_ASSOC_GLOSS_EN: Record<string, TrigramAssocGloss> = {
+  "乾": { family: "father", body: "head", animal: "horse", direction: "northwest", attribute: "strength" },
+  "坤": { family: "mother", body: "belly", animal: "ox", direction: "southwest", attribute: "yielding" },
+  "震": { family: "eldest son", body: "foot", animal: "dragon", direction: "east", attribute: "movement" },
+  "巽": { family: "eldest daughter", body: "thigh", animal: "rooster", direction: "southeast", attribute: "penetration" },
+  "坎": { family: "middle son", body: "ear", animal: "pig", direction: "north", attribute: "danger" },
+  "離": { family: "middle daughter", body: "eye", animal: "pheasant", direction: "south", attribute: "clinging" },
+  "艮": { family: "youngest son", body: "hand", animal: "dog", direction: "northeast", attribute: "stillness" },
+  "兌": { family: "youngest daughter", body: "mouth", animal: "sheep", direction: "west", attribute: "joy" },
+};
diff --git a/packages/core/src/data/xugua.ts b/packages/core/src/data/xugua.ts
new file mode 100644
index 0000000..3f02dbe
--- /dev/null
+++ b/packages/core/src/data/xugua.ts
@@ -0,0 +1,95 @@
+import type { XuGuaEntry } from "../types.js";
+
+/**
+ * 序卦傳 — Sequence of the Hexagrams.
+ *
+ * One of the Ten Wings of the I Ching. Explains why each hexagram
+ * follows the previous in King Wen order. Ancient classical Chinese
+ * text, public domain.
+ *
+ * Source: ctext.org/book-of-changes/xu-gua, cross-checked against
+ * zh.wikisource.org/wiki/周易/序卦. Punctuation is ctext editorial.
+ *
+ * Editorial notes preserved:
+ * - Hex 1 (乾) and 2 (坤) share the opening cosmological preamble
+ *   «有天地，然後萬物生焉» — 序卦 has no explicit standalone line for either.
+ * - Hex 30 (離) merges two adjacent ctext cells (the 坎 transition +
+ *   the close-of-上經 line).
+ * - Hex 31 (咸) is assigned the lower-jing cosmological preamble.
+ */
+export const XU_GUA: XuGuaEntry[] = [
+  { hexagram: 1, name: "乾", text: "有天地，然後萬物生焉。", note: "序卦 has no explicit standalone line for 乾 in this canonical source; the opening cosmological premise («有天地，然後萬物生焉。») introduces heaven-earth as the implicit ground from which all hexagrams unfold. Shared with 坤.", textEn: "When there were heaven and earth, then afterwards all things were produced. What fills up (the space) between heaven and earth are (those) all things. Hence (Khien and Khwan) are followed by Kun. Kun denotes filling up." },
+  { hexagram: 2, name: "坤", text: "有天地，然後萬物生焉。", note: "Shares the upper-jing cosmological preamble with 乾. The first explicitly-introduced hexagram in 序卦 is 屯.", textEn: "When there were heaven and earth, then afterwards all things were produced. What fills up (the space) between heaven and earth are (those) all things. Hence (Khien and Khwan) are followed by Kun. Kun denotes filling up." },
+  { hexagram: 3, name: "屯", text: "盈天地之間者唯萬物，故受之以《屯》。", textEn: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung." },
+  { hexagram: 4, name: "蒙", text: "《屯》者，盈也。屯者，物之始生也。物生必蒙，故受之以《蒙》。", textEn: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung." },
+  { hexagram: 5, name: "需", text: "《蒙》者，蒙也，物之稺也。物稺不可不養也，故受之以《需》。", textEn: "Kun is descriptive of things on their first production. When so produced, they are sure to be in an undeveloped condition. Hence Kun is followed by Mang. Mang is descriptive of what is undeveloped,—the young of creatures and things. These in that state require to be nourished. Hence Mang is followed by Hsu. Hsu is descriptive of the way in which meat and drink (come to be supplied). Over meat and drink there are sure to be contentions. Hence Hsu is followed by Sung." },
+  { hexagram: 6, name: "訟", text: "《需》者，飲食之道也。飲食必有訟，故受之以《訟》。", textEn: "Sung is sure to cause the rising up of the multitudes; and hence it is followed by Sze. Sze has the signification of multitudes, and between multitudes there must be some bond of union. Hence it is followed by Pi, which denotes being attached to." },
+  { hexagram: 7, name: "師", text: "訟必有眾起，故受之以《師》。", textEn: "Sung is sure to cause the rising up of the multitudes; and hence it is followed by Sze. Sze has the signification of multitudes, and between multitudes there must be some bond of union. Hence it is followed by Pi, which denotes being attached to." },
+  { hexagram: 8, name: "比", text: "《師》者，眾也。眾必有所比，故受之以《比》。", textEn: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai." },
+  { hexagram: 9, name: "小畜", text: "《比》者，比也。比必有所畜，故受之以《小畜》。", textEn: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai." },
+  { hexagram: 10, name: "履", text: "物畜然後有禮，故受之以《履》。", textEn: "(Multitudes in) union must be subjected to some restraint. Hence Pi is followed by Hsiao Khu. When things are subjected to restraint, there come to be rites of ceremony, and hence Hsiao Khu is followed by Li. The treading (on what is proper) leads to Thai, which issues in a state of freedom and repose, and hence Li is followed by Thai." },
+  { hexagram: 11, name: "泰", text: "履而泰然後安，故受之以《泰》。", textEn: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu." },
+  { hexagram: 12, name: "否", text: "《泰》者，通也。物不可以終通，故受之以《否》。", textEn: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu." },
+  { hexagram: 13, name: "同人", text: "物不可以終否，故受之以《同人》。", textEn: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu." },
+  { hexagram: 14, name: "大有", text: "與人同者，物必歸焉，故受之以《大有》。", textEn: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu." },
+  { hexagram: 15, name: "謙", text: "有大者不可以盈，故受之以《謙》。", textEn: "Thai denotes things having free course. They cannot have that for ever, and hence it is followed by Phi (denoting being shut up and restricted). Things cannot for ever be shut up, and hence Phi is followed by Thung Zan. To him who cultivates union with men, things must come to belong, and hence Thung Zan is followed by Ta Yu. Those who, have what is great should not allow in themselves the feeling of being full, and hence Ta Yu is followed by Khien. When great possessions are associated with humility, there is sure to be pleasure and satisfaction; and hence Khien is followed by Yu." },
+  { hexagram: 16, name: "豫", text: "有大而能謙必豫，故受之以《豫》。", textEn: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great." },
+  { hexagram: 17, name: "隨", text: "豫必有隨，故受之以《隨》。", textEn: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great." },
+  { hexagram: 18, name: "蠱", text: "以喜隨人者必有事，故受之以《蠱》。", textEn: "Where such complacency is awakened, (he who causes it) is sure to have followers. They who follow another are sure to have services (to perform), and hence Sui is followed by Ku. Ku means (the performance of) services. He who performs such services may afterwards become great, and hence Ku is followed by Lin. Lin means great." },
+  { hexagram: 19, name: "臨", text: "《蠱》者，事也。有事而後可大，故受之以《臨》。", textEn: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow." },
+  { hexagram: 20, name: "觀", text: "《臨》者，大也。物大然後可觀，故受之以《觀》。", textEn: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow." },
+  { hexagram: 21, name: "噬嗑", text: "可觀而後有所合，故受之以《噬嗑》。", textEn: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow." },
+  { hexagram: 22, name: "賁", text: "嗑者，合也。物不可以苟合而已，故受之以《賁》。", textEn: "What is great draws forth contemplation, and hence Lin is followed by Kwan. He who attracts contemplation will then bring about the union of others with himself, and hence Kwan is followed by Shih Ho. Shih Ho means union. But things should not be united in a reckless or irregular way, and hence Shih Ho is followed by Pi. Pi denotes adorning. When ornamentation has been carried to the utmost, its progress comes to an end; and hence Pi is followed by Po. Po denotes decay and overthrow." },
+  { hexagram: 23, name: "剝", text: "《賁》者，飾也。致飾然後亨則盡矣，故受之以《剝》。", textEn: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu." },
+  { hexagram: 24, name: "復", text: "《剝》者，剝也。物不可以終盡剝，窮上反下，故受之以《復》。", textEn: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu." },
+  { hexagram: 25, name: "无妄", text: "復則不妄矣，故受之以《无妄》。", textEn: "Things cannot be done away for ever. When decadence and overthrow have completed their work at one end, reintegration commences at the other; and hence Po is followed by Fu. When the return (thus indicated) has taken place, we have not any rash disorder, and Fu. is followed by Wu Wang. Given the freedom from disorder and insincerity (which this name denotes), there may be the accumulation (of virtue), and Wu Wang is followed by Ta Khu." },
+  { hexagram: 26, name: "大畜", text: "有无妄，然後可畜，故受之以《大畜》。", textEn: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to." },
+  { hexagram: 27, name: "頤", text: "物畜然後可養，故受之以《頤》。", textEn: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to." },
+  { hexagram: 28, name: "大過", text: "《頤》者，養也。不養則不可動，故受之以《大過》。", textEn: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to." },
+  { hexagram: 29, name: "坎", text: "物不可以終過，故受之以《坎》。", textEn: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to." },
+  { hexagram: 30, name: "離", text: "《坎》者，陷也。陷必有所麗，故受之以《離》。《離》者，麗也。", note: "ctext records «《離》者，麗也。» as a separate trailing cell closing 上經; merged here.", textEn: "Such accumulation having taken place, there will follow the nourishment of it; and hence Ta Khu is followed by I. I denotes nourishing. Without nourishment there could be no movement, and hence I is followed by Ta Kwo. Things cannot for ever be in a state of extraordinary (progress); and hence Ta Kwo is followed by Khan. Khan denotes falling into peril. When one falls into peril, he is sure to attach himself to some person or thing; and hence Khan is followed by Li. Li denotes being attached, or adhering, to." },
+  { hexagram: 31, name: "咸", text: "有天地然後有萬物，有萬物然後有男女，有男女然後有夫婦，有夫婦然後有父子，有父子然後有君臣，有君臣然後有上下，有上下然後禮義有所錯。", note: "下經 cosmological preamble. 序卦 introduces 咸 implicitly via the heaven-earth / husband-wife passage rather than via «故受之以咸».", textEn: "Heaven and earth existing, all (material) things then got their existence. All (material) things having existence, afterwards there came male and female. From the existence of male and female there came afterwards husband and wife. From husband and wife there came father and son. From father and son there came ruler and minister. From ruler and minister there came high and low. When (the distinction of) high and low had existence, afterwards came the arrangements of propriety and righteousness. The rule for the relation of husband and wife is that it should be long-enduring. Hence Hsien is followed by Hang. Hang denotes long enduring." },
+  { hexagram: 32, name: "恆", text: "夫婦之道不可以不久也，故受之以《恆》。", textEn: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan." },
+  { hexagram: 33, name: "遯", text: "《恆》者，久也。物不可以久居其所，故受之以《遯》。", textEn: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan." },
+  { hexagram: 34, name: "大壯", text: "《遯》者，退也。物不可以終遯，故受之以《大壯》。", textEn: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan." },
+  { hexagram: 35, name: "晉", text: "物不可以終壯，故受之以《晉》。", textEn: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan." },
+  { hexagram: 36, name: "明夷", text: "《晉》者，進也。進必有所傷，故受之以《明夷》。", textEn: "Things cannot long abide in the same place; and hence Hang is followed by Thun. Thun denotes withdrawing. Things cannot be for ever withdrawn; and hence Thun is succeeded by Ta Kwang. Things cannot remain forever (simply) in the state of vigour; and hence Ta Kwang is succeeded by Zin. Zin denotes advancing. (But) advancing is sure to lead to being wounded; and hence Zin is succeeded by Ming I. I denotes being wounded. He who is wounded abroad will return to his home; and hence Ming I is followed by Kia Zan." },
+  { hexagram: 37, name: "家人", text: "夷者，傷也。傷於外者必反於家，故受之以《家人》。", textEn: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease." },
+  { hexagram: 38, name: "睽", text: "家道窮必乖，故受之以《睽》。", textEn: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease." },
+  { hexagram: 39, name: "蹇", text: "《睽》者，乖也。乖必有難，故受之以《蹇》。", textEn: "When the right administration of the family is at an end, misunderstanding and division will ensue; and hence Kia Zan is followed by Khwei. Khwei denotes misunderstanding and division; and such a state is sure to give rise to difficulties and complications. Khwei therefore is followed by Kien. Kien denotes difficulties; but things cannot remain for ever in such a state. Kien therefore is followed by Kieh, which denotes relaxation and ease." },
+  { hexagram: 40, name: "解", text: "《蹇》者，難也。物不可以終難，故受之以《解》。", textEn: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting." },
+  { hexagram: 41, name: "損", text: "《解》者，緩也。緩必有所失，故受之以《損》。", textEn: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting." },
+  { hexagram: 42, name: "益", text: "損而不已必益，故受之以《益》。", textEn: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting." },
+  { hexagram: 43, name: "夬", text: "益而不已必決，故受之以《夬》。", textEn: "In a state of relaxation and ease there are sure to be losses; and hence Kieh is followed by Sun. But when Sun (or diminution) is going on without end, increase is sure to come. Sun therefore is followed by Yi. When increase goes on without end, there is sure to come a dispersing of it, and hence Yi is followed by Kwai. Kwai denotes dispersion. But dispersion must be succeeded by a meeting (again). Hence Kwai is followed by Kau, which denotes such meeting." },
+  { hexagram: 44, name: "姤", text: "《夬》者，決也。決必有遇，故受之以《姤》。", textEn: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing." },
+  { hexagram: 45, name: "萃", text: "《姤》者，遇也。物相遇而後聚，故受之以《萃》。", textEn: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing." },
+  { hexagram: 46, name: "升", text: "《萃》者，聚也。聚而上者謂之升，故受之以《升》。", textEn: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing." },
+  { hexagram: 47, name: "困", text: "升而不已必困，故受之以《困》。", textEn: "When things meet together, a collection is then formed. Hence Kau is followed by Zhui, which name denotes, being collected. When (good men) are collected and mount to the highest places, there results what we call an upward advance; and hence Zhui is followed by Shang. When such advance continues without stopping, there is sure to come distress; and hence Shang is followed by Khwan. When distress is felt in the height (that has been gained), there is sure to be a return to the ground beneath; and hence Khwan is followed by Zing." },
+  { hexagram: 48, name: "井", text: "困乎上者必反下，故受之以《井》。", textEn: "What happens under Zing requires to be changed, and hence it is followed by Ko (denoting change)." },
+  { hexagram: 49, name: "革", text: "井道不可不革，故受之以《革》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 50, name: "鼎", text: "革物者莫若鼎，故受之以《鼎》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 51, name: "震", text: "主器者莫若長子，故受之以《震》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 52, name: "艮", text: "《震》者，動也。物不可以終動，止之，故受之以《艮》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 53, name: "漸", text: "《艮》者，止也。物不可以終止，故受之以《漸》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 54, name: "歸妹", text: "漸者，進也。進必有所歸，故受之以《歸妹》。", textEn: "For changing the substance of things there is nothing equal to the caldron; and hence Kö is followed by Ting. For presiding over (that and all other) vessels, no one is equal to the eldest son, and hence Ting is followed by Kan. Kan conveys the idea of putting in motion. But things cannot be kept in motion forever. The motion is stopped; and hence Kan is followed by Kan, which gives the idea of arresting or stopping. Things cannot be kept for ever in a state of repression, and hence Kan is followed by Kien, which gives the idea of (gradually) advancing. With advance there must be a certain point that is arrived at, and hence Kien is succeeded by Kwei Mei. When things thus find the proper point to which to come, they are sure to become great. Hence Kwei Mei is succeeded by Fang, which conveys the idea of being great." },
+  { hexagram: 55, name: "豐", text: "得其所歸者必大，故受之以《豐》。", textEn: "He whose greatness reaches the utmost possibility, is sure to lose his dwelling; and hence Fang is succeeded by Lu (denoting travellers or strangers). We have in it the idea of strangers who have no place to receive them, and hence Lu is followed by Sun, which gives the idea of (penetrating and) entering." },
+  { hexagram: 56, name: "旅", text: "《豐》者，大也。窮大者必失其居，故受之以《旅》。", textEn: "He whose greatness reaches the utmost possibility, is sure to lose his dwelling; and hence Fang is succeeded by Lu (denoting travellers or strangers). We have in it the idea of strangers who have no place to receive them, and hence Lu is followed by Sun, which gives the idea of (penetrating and) entering." },
+  { hexagram: 57, name: "巽", text: "旅而无所容，故受之以《巽》。", textEn: "One enters (on the pursuit of his object), and afterwards has pleasure in it; hence Sun is followed by Tui. Tui denotes pleasure and satisfaction. This pleasure and satisfaction (begins) afterwards to be dissipated, and hence Tui is followed by Hwan, which denotes separation and division." },
+  { hexagram: 58, name: "兌", text: "《巽》者，入也。入而後說之，故受之以《兌》。", textEn: "One enters (on the pursuit of his object), and afterwards has pleasure in it; hence Sun is followed by Tui. Tui denotes pleasure and satisfaction. This pleasure and satisfaction (begins) afterwards to be dissipated, and hence Tui is followed by Hwan, which denotes separation and division." },
+  { hexagram: 59, name: "渙", text: "《兌》者，說也。說而後散之，故受之以《渙》。", textEn: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo." },
+  { hexagram: 60, name: "節", text: "《渙》者，離也。物不可以終離，故受之以《節》。", textEn: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo." },
+  { hexagram: 61, name: "中孚", text: "節而信之，故受之以《中孚》。", textEn: "A state of division cannot continue for ever, and therefore Hwan is followed by Zieh. Zieh (or the system of regulations) having been established, men believe in it, and hence it is followed by Kung Fu. When men have the belief which Kung Fu implies, they are sure to carry it into practice; and hence it is succeeded by Hsiao Kwo." },
+  { hexagram: 62, name: "小過", text: "有其信者必行之，故受之以《小過》。", textEn: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close." },
+  { hexagram: 63, name: "既濟", text: "有過物者必濟，故受之以《既濟》。", textEn: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close." },
+  { hexagram: 64, name: "未濟", text: "物不可窮也，故受之以《未濟》，終焉。", textEn: "He that surpasses others is sure to remedy (evils that exist), and therefore Hsiao Kwo is succeeded by Ki Zi. But the succession of events cannot come to an end, and therefore Ki Zi is succeeded by Wei Zi, with which (the hexagrams) come to a close." },
+];
+
+export const XU_GUA_META = {
+  source: "https://ctext.org/book-of-changes/xu-gua and https://ctext.org/book-of-changes/za-gua",
+  crossChecks: [
+    "https://zh.wikisource.org/wiki/%E5%91%A8%E6%98%93/%E5%BA%8F%E5%8D%A6",
+    "https://zh.wikisource.org/wiki/%E5%91%A8%E6%98%93/%E9%9B%9C%E5%8D%A6",
+  ],
+  license: "ancient classical Chinese text, public domain (Ten Wings of the I Ching, ~Han dynasty or earlier)",
+  punctuationSource: "ctext editorial — uses 《》 quotation marks around hexagram names and modern Chinese commas/periods (， 。). Wikisource cross-check uses similar punctuation. The underlying characters match across both sources.",
+} as const;
diff --git a/packages/core/src/data/zagua.ts b/packages/core/src/data/zagua.ts
new file mode 100644
index 0000000..0a8da23
--- /dev/null
+++ b/packages/core/src/data/zagua.ts
@@ -0,0 +1,105 @@
+import type { ZaGuaEntry } from "../types.js";
+
+/**
+ * 雜卦傳 — Miscellaneous Notes on the Hexagrams.
+ *
+ * One of the Ten Wings of the I Ching. Pairs hexagrams contrastively,
+ * one terse line per pair. Ancient classical Chinese text, public
+ * domain.
+ *
+ * Source: ctext.org/book-of-changes/za-gua, cross-checked against
+ * zh.wikisource.org/wiki/周易/雜卦. Punctuation is ctext editorial.
+ *
+ * Pair structure:
+ * - 28 mirror-pairs (綜) + 4 polarity-pairs (錯, for the 8 self-mirror
+ *   hexagrams 1/2, 27/28, 29/30, 61/62) cover 64 hexagrams in 32 pairs.
+ * - 53 entries (not 32) because the famously disordered final stretch
+ *   (大過, 姤, 漸, 頤, 既濟, 歸妹, 未濟, 夬) breaks the regular pairing —
+ *   preserved as-is per recognized textual feature.
+ * - One closing coda entry has an empty pair[] (no specific hex reference).
+ */
+export const ZA_GUA: ZaGuaEntry[] = [
+  { index: 0, pair: [1, 2], names: ["乾", "坤"], text: "《乾》剛《坤》柔。" },
+  { index: 1, pair: [8, 7], names: ["比", "師"], text: "《比》樂《師》憂。" },
+  { index: 2, pair: [19, 20], names: ["臨", "觀"], text: "《臨》《觀》之義，或與或求。" },
+  { index: 3, pair: [3], names: ["屯"], text: "《屯》見而不失其居。" },
+  { index: 4, pair: [4], names: ["蒙"], text: "《蒙》雜而著。" },
+  { index: 5, pair: [51, 52], names: ["震", "艮"], text: "《震》，起也。《艮》，止也。" },
+  { index: 6, pair: [41, 42], names: ["損", "益"], text: "《損》《益》，盛衰之始也。" },
+  { index: 7, pair: [26], names: ["大畜"], text: "《大畜》，時也。" },
+  { index: 8, pair: [25], names: ["无妄"], text: "《无妄》，災也。" },
+  { index: 9, pair: [45, 46], names: ["萃", "升"], text: "《萃》聚而《升》不來也。" },
+  { index: 10, pair: [15, 16], names: ["謙", "豫"], text: "《謙》輕而《豫》怠也。" },
+  { index: 11, pair: [21], names: ["噬嗑"], text: "《噬嗑》，食也。" },
+  { index: 12, pair: [22], names: ["賁"], text: "《賁》，无色也。" },
+  { index: 13, pair: [58, 57], names: ["兌", "巽"], text: "《兌》見而《巽》伏也。" },
+  { index: 14, pair: [17], names: ["隨"], text: "《隨》，无故也。" },
+  { index: 15, pair: [18], names: ["蠱"], text: "《蠱》則飭也。" },
+  { index: 16, pair: [23], names: ["剝"], text: "《剝》，爛也。" },
+  { index: 17, pair: [24], names: ["復"], text: "《復》，反也。" },
+  { index: 18, pair: [35], names: ["晉"], text: "《晉》，晝也。" },
+  { index: 19, pair: [36], names: ["明夷"], text: "《明夷》，誅也。" },
+  { index: 20, pair: [48, 47], names: ["井", "困"], text: "《井》通而《困》相遇也。" },
+  { index: 21, pair: [31], names: ["咸"], text: "《咸》，速也。" },
+  { index: 22, pair: [32], names: ["恆"], text: "《恆》，久也。" },
+  { index: 23, pair: [59], names: ["渙"], text: "《渙》，離也。" },
+  { index: 24, pair: [60], names: ["節"], text: "《節》，止也。" },
+  { index: 25, pair: [40], names: ["解"], text: "《解》，緩也。" },
+  { index: 26, pair: [39], names: ["蹇"], text: "《蹇》，難也。" },
+  { index: 27, pair: [38], names: ["睽"], text: "《睽》，外也。" },
+  { index: 28, pair: [37], names: ["家人"], text: "《家人》，內也。" },
+  { index: 29, pair: [12, 11], names: ["否", "泰"], text: "《否》《泰》，反其類也。" },
+  { index: 30, pair: [34, 33], names: ["大壯", "遯"], text: "《大壯》則止，《遯》則退也。" },
+  { index: 31, pair: [14], names: ["大有"], text: "《大有》，眾也。" },
+  { index: 32, pair: [13], names: ["同人"], text: "《同人》，親也。" },
+  { index: 33, pair: [49], names: ["革"], text: "《革》，去故也。" },
+  { index: 34, pair: [50], names: ["鼎"], text: "《鼎》，取新也。" },
+  { index: 35, pair: [62], names: ["小過"], text: "《小過》，過也。" },
+  { index: 36, pair: [61], names: ["中孚"], text: "《中孚》，信也。" },
+  { index: 37, pair: [55], names: ["豐"], text: "《豐》，多故也。" },
+  { index: 38, pair: [56], names: ["旅"], text: "親寡《旅》也。" },
+  { index: 39, pair: [30, 29], names: ["離", "坎"], text: "《離》上而《坎》下也。" },
+  { index: 40, pair: [9], names: ["小畜"], text: "《小畜》，寡也。" },
+  { index: 41, pair: [10], names: ["履"], text: "《履》，不處也。" },
+  { index: 42, pair: [5], names: ["需"], text: "《需》，不進也。" },
+  { index: 43, pair: [6], names: ["訟"], text: "《訟》，不親也。" },
+  { index: 44, pair: [28], names: ["大過"], text: "《大過》，顛也。" },
+  { index: 45, pair: [44], names: ["姤"], text: "《姤》，遇也，柔遇剛也。" },
+  { index: 46, pair: [53], names: ["漸"], text: "《漸》，女歸待男行也。" },
+  { index: 47, pair: [27], names: ["頤"], text: "《頤》，養正也。" },
+  { index: 48, pair: [63], names: ["既濟"], text: "《既濟》，定也。" },
+  { index: 49, pair: [54], names: ["歸妹"], text: "《歸妹》，女之終也。" },
+  { index: 50, pair: [64], names: ["未濟"], text: "《未濟》，男之窮也。" },
+  { index: 51, pair: [43], names: ["夬"], text: "《夬》，決也，剛決柔也。" },
+  { index: 52, pair: [], names: [], text: "君子道長，小人道憂也。" },
+];
+
+export const ZA_GUA_META = {
+  source: "https://ctext.org/book-of-changes/xu-gua and https://ctext.org/book-of-changes/za-gua",
+  crossChecks: [
+    "https://zh.wikisource.org/wiki/%E5%91%A8%E6%98%93/%E5%BA%8F%E5%8D%A6",
+    "https://zh.wikisource.org/wiki/%E5%91%A8%E6%98%93/%E9%9B%9C%E5%8D%A6",
+  ],
+  license: "ancient classical Chinese text, public domain (Ten Wings of the I Ching, ~Han dynasty or earlier)",
+  punctuationSource: "ctext editorial — uses 《》 quotation marks around hexagram names and modern Chinese commas/periods (， 。). Wikisource cross-check uses similar punctuation. The underlying characters match across both sources.",
+} as const;
+
+/**
+ * Reverse index: hexagram number (1..64) → its 雜卦 entry.
+ *
+ * Each hexagram appears in exactly one ZA_GUA entry. For the 8 self-
+ * mirror hexagrams (1, 2, 27, 28, 29, 30, 61, 62), the entry pairs them
+ * with their polarity partner. For the disordered tail, the canonical
+ * source-order pairing is preserved.
+ *
+ * Closing-coda entry (empty pair[]) contributes no index keys.
+ */
+export const ZA_GUA_BY_HEX: Record<number, ZaGuaEntry> = (() => {
+  const idx: Record<number, ZaGuaEntry> = {};
+  for (const entry of ZA_GUA) {
+    for (const hex of entry.pair) {
+      idx[hex] = entry;
+    }
+  }
+  return idx;
+})();
diff --git a/packages/core/src/derivation/connections.ts b/packages/core/src/derivation/connections.ts
new file mode 100644
index 0000000..e33c581
--- /dev/null
+++ b/packages/core/src/derivation/connections.ts
@@ -0,0 +1,63 @@
+import type { Cast, CastConnections, ShuoguaCitation, DerivedType } from "../types.js";
+import { XU_GUA } from "../data/xugua.js";
+import { ZA_GUA_BY_HEX } from "../data/zagua.js";
+import { LEGGE_ZAGUA_BY_HEX } from "../data/legge.js";
+
+/**
+ * Static map: each derivation operation → the 說卦 chapter that grounds it
+ * in canonical text. Used as the textual authority anchor on cast surfaces
+ * — clicking a derivation badge opens the cited chapter.
+ *
+ * - nuclear (互卦):    ch.3 — 天地定位，山澤通氣，雷風相薄 (the trigram-cycle)
+ * - polarity (錯卦):   ch.2 — 立天之道曰陰與陽 (the yin-yang complementary axis)
+ * - mirror (綜卦):     ch.6 — 神也者妙萬物 (the vantage-flip insight)
+ * - diagonal (對角卦): ch.6 — same authority as mirror (錯 ∘ 綜 composition)
+ * - becoming (之卦):   ch.7 — 健順動入陷麗止說 (the operational core)
+ */
+const DERIVATION_CITATIONS: Record<DerivedType, number> = {
+  nuclear: 3,
+  polarity: 2,
+  mirror: 6,
+  becoming: 7,
+  diagonal: 6,
+};
+
+const DERIVATION_ORDER: DerivedType[] = [
+  "nuclear",
+  "polarity",
+  "mirror",
+  "becoming",
+  "diagonal",
+];
+
+const buildShuoguaCitations = (): ShuoguaCitation[] =>
+  DERIVATION_ORDER.map((op) => ({ op, chapter: DERIVATION_CITATIONS[op] }));
+
+/**
+ * Build the text-bearing relations overlay for a cast.
+ *
+ * Pure lookup over XU_GUA (sequence narrative from the previous hexagram),
+ * ZA_GUA_BY_HEX (contrast pair commentary), and the static 說卦 chapter
+ * citations. Does not touch the numeric derivations (nuclear/polarity/
+ * mirror/diagonal/becoming) — those remain pure functions in their own
+ * modules.
+ *
+ * The signature accepts any object exposing `primary` — a full Cast at
+ * runtime, or a synthesized `{ primary: kw }` from the HexagramDetail path
+ * where no Cast exists.
+ */
+export function buildConnections(cast: Pick<Cast, "primary">): CastConnections {
+  const result: CastConnections = { shuoguaCitations: buildShuoguaCitations() };
+  const xu = XU_GUA[cast.primary - 1];
+  if (xu) result.xuGua = xu;
+  const za = ZA_GUA_BY_HEX[cast.primary];
+  if (za) {
+    // Overlay Legge English by hex number. The LEGGE_ZAGUA_BY_HEX index
+    // reroutes documented Legge typography anomalies (pair=[41] → hex 39,
+    // pair=[50,51] → hexes 49 + 50), so every hex 1..64 gets a non-undefined
+    // couplet text. The undefined branch is kept defensively.
+    const textEn = LEGGE_ZAGUA_BY_HEX[cast.primary];
+    result.zaGuaPair = textEn !== undefined ? { ...za, textEn } : za;
+  }
+  return result;
+}
diff --git a/packages/core/src/detail.ts b/packages/core/src/detail.ts
index ea7e58f..66e7290 100644
--- a/packages/core/src/detail.ts
+++ b/packages/core/src/detail.ts
@@ -1,12 +1,13 @@
 // HexagramDetail — build a full detail struct for a hexagram
 
-import type { Hexagram, TrigramInfo, Line } from "./types.js";
+import type { Hexagram, TrigramInfo, Line, CastConnections } from "./types.js";
 import { GUA } from "./data/gua.js";
 import { getStructure } from "./identify/structure.js";
 import { nuclear } from "./derivation/nuclear.js";
 import { polarity } from "./derivation/polarity.js";
 import { mirror } from "./derivation/mirror.js";
 import { diagonal } from "./derivation/diagonal.js";
+import { buildConnections } from "./derivation/connections.js";
 
 export interface HexagramDetail {
   kw: number;
@@ -18,6 +19,8 @@ export interface HexagramDetail {
   diagonal: { kw: number; gua: Hexagram };
   isLocked: boolean;
   lockedPartner?: { kw: number; gua: Hexagram };
+  /** Text-bearing relations overlay — 序卦 / 雜卦 / 說卦 citations. */
+  connections: CastConnections;
 }
 
 /** Convert a hexagram's raw line array [0|1, ...] to Line[] for derivation functions */
@@ -49,6 +52,7 @@ export function buildHexagramDetail(kw: number): HexagramDetail {
     mirror: { kw: mirrorKw, gua: GUA[mirrorKw - 1] },
     diagonal: { kw: diagonalKw, gua: GUA[diagonalKw - 1] },
     isLocked,
+    connections: buildConnections({ primary: kw }),
   };
 
   if (isLocked) {
diff --git a/packages/core/src/format/reading.ts b/packages/core/src/format/reading.ts
index 446c52c..471eacc 100644
--- a/packages/core/src/format/reading.ts
+++ b/packages/core/src/format/reading.ts
@@ -4,13 +4,13 @@ import { GUA } from "../data/gua.js";
 import { QUOTE_STYLES } from "../data/trigrams.js";
 import { formatTrigrams } from "../identify/structure.js";
 
-/** Unbiased random quote style for derived hexagrams (excludes "st"). */
+/** Unbiased random quote style for derived hexagrams — uses QUOTE_STYLES. */
 export function getRandomQuoteStyle(source: RandomSource): QuoteStyle {
   let byte: number;
   do {
     byte = source.nextBytes(1)[0];
   } while (byte >= 250);
-  return QUOTE_STYLES[byte % 5] as QuoteStyle;
+  return QUOTE_STYLES[byte % 5];
 }
 
 /** Format full reading with optional transformation */
@@ -28,7 +28,9 @@ export function formatReading(
       middle += ` → ${formatTrigrams(structure.becoming)}`;
     }
   } else {
-    middle = g[style];
+    // Optional Style keys ("gc") may be undefined until backfill — fall
+    // through to empty string so callers always get a string back.
+    middle = g[style] ?? "";
   }
 
   let out = `${g.u} ${g.n} (${g.p}) — ${middle}`;
diff --git a/packages/core/src/index.ts b/packages/core/src/index.ts
index 7590b71..c7759cb 100644
--- a/packages/core/src/index.ts
+++ b/packages/core/src/index.ts
@@ -4,6 +4,7 @@
 // Types
 export type {
   Style,
+  DisplayLanguage,
   Hexagram,
   LineValue,
   Line,
@@ -13,6 +14,15 @@ export type {
   Structure,
   DailyCache,
   HistoryEntry,
+  // Data-enrichment additions (U1 — defined here, exported now for U2+ consumers)
+  LeggeHexagram,
+  TrigramAssoc,
+  XuGuaEntry,
+  ZaGuaEntry,
+  ShuoguaChapter,
+  ShuoguaDerivationContext,
+  ShuoguaCitation,
+  CastConnections,
 } from "./types.js";
 
 // RandomSource
@@ -36,6 +46,7 @@ export { polarity } from "./derivation/polarity.js";
 export { mirror } from "./derivation/mirror.js";
 export { diagonal } from "./derivation/diagonal.js";
 export { isLockedPair } from "./derivation/locked-pairs.js";
+export { buildConnections } from "./derivation/connections.js";
 
 // Identify
 export { BINARY_TO_KW, hexagramByBinary, hexagramByKW } from "./identify/lookup.js";
@@ -54,8 +65,25 @@ export {
   QUOTE_STYLES,
   DERIVED_LABELS,
   DERIVED_LABELS_CN,
+  TRIGRAM_ASSOC_GLOSS_EN,
+  type TrigramAssocGloss,
 } from "./data/trigrams.js";
 export { LARGE_GLYPHS, type GlyphFont, type GlyphSize, type GlyphEntry } from "./data/large-glyphs.js";
+export { XU_GUA, XU_GUA_META } from "./data/xugua.js";
+export { ZA_GUA, ZA_GUA_META, ZA_GUA_BY_HEX } from "./data/zagua.js";
+export {
+  SHUO_GUA,
+  SHUOGUA_DERIVATION_CONTEXT,
+  TRIGRAM_ASSOC,
+  SHUO_GUA_META,
+} from "./data/shuogua.js";
+export {
+  LEGGE_XUGUA_EN,
+  LEGGE_ZAGUA_EN,
+  LEGGE_ZAGUA_BY_HEX,
+  LEGGE_SHUOGUA_EN,
+  LEGGE_META,
+} from "./data/legge.js";
 
 // Format
 export { formatReading, getRandomQuoteStyle } from "./format/reading.js";
diff --git a/packages/core/src/types.ts b/packages/core/src/types.ts
index c62762b..ffba6ed 100644
--- a/packages/core/src/types.ts
+++ b/packages/core/src/types.ts
@@ -1,12 +1,30 @@
-/** Commentary style keys: dx=大象傳, tu=彖傳, en=English, te=彖英, w=Wilhelm (experimental) */
-export type Style = "dx" | "tu" | "en" | "te" | "w" | "st";
+/**
+ * Commentary style keys (single-string fields on Hexagram):
+ * - dx=大象傳, tu=彖傳, en=English image, te=English judgment
+ * - w=Wilhelm-flavored synthesis (experimental, not direct quotes)
+ * - st=synthetic structure (handled by a separate code path)
+ * - gc=卦辭 (root Judgment / oracle text — added in data-enrichment U7;
+ *   populated by U8's backfill)
+ *
+ * "gc" is in Style and STYLES but NOT in QUOTE_STYLES — the root oracle
+ * is not a random-quotable commentary lineage. Per-line commentary fields
+ * (yao, yaoEn, yaoXiao, yaoXiaoEn) and the Legge translation lineage
+ * (legge) are accessed directly, not via Style indexing.
+ */
+export type Style = "dx" | "tu" | "en" | "te" | "w" | "st" | "gc";
 
 /**
- * Subset of Style that can be looked up directly on a Hexagram (i.e. excludes
- * "st", which is the synthetic "structure / trigrams" style handled by a
- * separate code path). Any random-quote selector should narrow to this.
+ * Subset of Style usable by the random-quote selector. Excludes "st"
+ * (synthetic trigram-structure path, handled separately) AND "gc" (卦辭 is
+ * the root oracle, not a random-quotable commentary lineage — and the
+ * field is optional, so a random selector cannot rely on its presence).
+ * The runtime pool in QUOTE_STYLES (data/trigrams.ts) is kept in lockstep
+ * with this type by style-union-parity.test.ts.
  */
-export type QuoteStyle = Exclude<Style, "st">;
+export type QuoteStyle = Exclude<Style, "st" | "gc">;
+
+/** Display language preference. Text coverage is incremental per surface. */
+export type DisplayLanguage = "zh-Hans" | "zh-Hant" | "en";
 
 /** Hexagram entry in GUA array */
 export interface Hexagram {
@@ -22,6 +40,67 @@ export interface Hexagram {
   w: string; // Inspired by Wilhelm — experimental, not direct quotes
   yao: string[]; // 爻辭 — 6 classical Chinese line texts (line 1 through 6)
   yaoEn: string[]; // 6 English line interpretations (line 1 through 6)
+
+  /** 卦辭 — root Judgment text (canonical zh). Added in data-enrichment wave. */
+  gc?: string;
+  /** English of 卦辭 (Legge SBE vol. XVI, 1882). */
+  gcEn?: string;
+  /** 小象傳 — per-line Small Image commentary (canonical zh, 6 entries). */
+  yaoXiao?: string[];
+  /** English of 小象傳 (Legge SBE vol. XVI, 1882). */
+  yaoXiaoEn?: string[];
+  /** Full James Legge translation lineage. Populated by data-enrichment wave U10 (post-cleanup). */
+  legge?: LeggeHexagram;
+}
+
+/**
+ * James Legge translation of a single hexagram from Sacred Books of the East
+ * vol. XVI (1882). Public domain. Wings translations live on XuGuaEntry,
+ * ZaGuaEntry, ShuoguaChapter.
+ */
+export interface LeggeHexagram {
+  /** Legge's romanization, e.g. "Khien", "Khwan". */
+  leggeName: string;
+  /** Thwan — the Judgment text. */
+  judgment: string;
+  /** Great Symbolism — the Image text. */
+  image: string;
+  /**
+   * Per-line statements. Six entries for hex 3..64; seven for hex 1 & 2
+   * (the canonical "use of the number nine/six" paragraph).
+   */
+  lines: string[];
+}
+
+/**
+ * 說卦傳 structured catalogue per trigram.
+ *
+ * The named-field block (image, family, body, animal, direction, attribute,
+ * extendedImages) is verbatim from 說卦 chapters 8–11. The optional fields
+ * (season, cosmologicalRole, other) are editorial synthesis and must be
+ * labeled as derived rather than canonical in the UI.
+ */
+export interface TrigramAssoc {
+  /** Canonical image — 天 / 地 / 雷 / 風 / 水 / 火 / 山 / 澤. */
+  image: string;
+  /** Canonical family role — 父 / 母 / 長男 / 長女 / 中男 / 中女 / 少男 / 少女. */
+  family: string;
+  /** Canonical body part — 首 / 腹 / 足 / 股 / 耳 / 目 / 手 / 口. */
+  body: string;
+  /** Canonical animal — 馬 / 牛 / 龍 / 雞 / 豕 / 雉 / 狗 / 羊. */
+  animal: string;
+  /** Canonical direction (後天 later-heaven arrangement). */
+  direction: string;
+  /** Canonical attribute — 健 / 順 / 動 / 入 / 陷 / 麗 / 止 / 說. */
+  attribute: string;
+  /** Canonical extended images from 說卦 ch. 11 (varies per trigram — 乾 has 14, others fewer). */
+  extendedImages: string[];
+  /** Editorial: rough seasonal correlate. NOT canonical 說卦 — label as derived in UI. */
+  season?: string;
+  /** Editorial: cosmological role per the 帝出乎震 cycle. NOT canonical 說卦. */
+  cosmologicalRole?: string;
+  /** Editorial: additional notes. NOT canonical 說卦. */
+  other?: string;
 }
 
 /** Line value from 3-coin toss: 6=old yin, 7=young yang, 8=young yin, 9=old yang */
@@ -66,6 +145,8 @@ export interface TrigramInfo {
   sym: string;
   n: string;
   img: string;
+  /** 說卦傳 catalogue for this trigram. Populated by data-enrichment wave U4. */
+  assoc?: TrigramAssoc;
 }
 
 /** Structure breakdown of a hexagram */
@@ -75,6 +156,93 @@ export interface Structure {
   becoming: { upper: TrigramInfo; lower: TrigramInfo } | null;
 }
 
+/**
+ * 序卦傳 entry — narrative bridge explaining why this hexagram follows the
+ * previous in King Wen order.
+ */
+export interface XuGuaEntry {
+  /** King Wen number 1..64. */
+  hexagram: number;
+  /** zh name e.g. 屯. */
+  name: string;
+  /** Canonical zh text. */
+  text: string;
+  /** Legge's English (Appendix VI of SBE vol. XVI). Populated post-Legge-cleanup. */
+  textEn?: string;
+  /** Editorial note (e.g. 乾/坤 shared cosmological preamble, 咸 lower-jing preamble). */
+  note?: string;
+}
+
+/**
+ * 雜卦傳 entry — terse contrastive pairing of two hexagrams. The traditional
+ * source pairs hexagrams via geometric mirror (with polarity fallback for the
+ * 8 self-symmetric hexagrams). The famously disordered final stretch breaks
+ * the regular pairing; entries in that range preserve source order rather
+ * than being normalized.
+ */
+export interface ZaGuaEntry {
+  /** Source-order index 0..52. */
+  index: number;
+  /** Hexagram numbers in the pair (0-2 entries; the disordered tail may collapse). */
+  pair: number[];
+  /** zh names matching `pair`. */
+  names: string[];
+  /** Canonical zh text. */
+  text: string;
+  /** Legge's English (Appendix VII of SBE vol. XVI). Populated post-Legge-cleanup. */
+  textEn?: string;
+}
+
+/**
+ * 說卦傳 chapter (the prose body). Separate from the structured
+ * `TrigramAssoc` catalogue.
+ */
+export interface ShuoguaChapter {
+  /** Chapter number 1..11. */
+  n: number;
+  /** Canonical zh text. */
+  text: string;
+  /** Project-authored modern English keyed to the standard 11-chapter division. */
+  modernEn?: string;
+  /** Legge's English (Appendix V of SBE vol. XVI). Populated post-Legge-cleanup. */
+  textEn?: string;
+}
+
+/** Project-authored explanation for why a derivation operation cites a 說卦 chapter. */
+export interface ShuoguaDerivationContext {
+  chapter: number;
+  title: string;
+  relevance: string;
+}
+
+/** Citation pointing into 說卦傳 for a derivation operation. */
+export interface ShuoguaCitation {
+  op: DerivedType;
+  /** 說卦傳 chapter 1..11 that grounds this operation. */
+  chapter: number;
+}
+
+/**
+ * Text-bearing relations overlay computed from a Cast.
+ *
+ * Joins the numeric derivations (nuclear / polarity / mirror / diagonal /
+ * becoming) with canonical text data from XU_GUA, ZA_GUA, and SHUO_GUA. Pure
+ * overlay built by `derivation/connections.ts`; does not mutate the Cast.
+ */
+export interface CastConnections {
+  /**
+   * Sequence narrative from the previous hexagram. Populated for all hexes
+   * 1..64 — hex 1 and hex 2 share the opening cosmological preamble (序卦
+   * has no explicit standalone line for either; the preamble is attributed
+   * to both).
+   */
+  xuGua?: XuGuaEntry;
+  /** Contrastive pair commentary. May be absent if the disordered tail leaves a gap. */
+  zaGuaPair?: ZaGuaEntry;
+  /** Textual authority per derivation operation. */
+  shuoguaCitations: ShuoguaCitation[];
+}
+
 /** Cache structure for daily reading */
 export interface DailyCache {
   date: string;
diff --git a/packages/storage/src/__tests__/config-store.test.ts b/packages/storage/src/__tests__/config-store.test.ts
index e5a6949..a4bb101 100644
--- a/packages/storage/src/__tests__/config-store.test.ts
+++ b/packages/storage/src/__tests__/config-store.test.ts
@@ -19,6 +19,7 @@ describe("JsonConfigStore", () => {
 
     expect(config).toEqual({
       motion: "default",
+      language: "zh-Hant",
       theme: "bone",
       color: "auto",
       timezone: "system",
@@ -33,6 +34,7 @@ describe("JsonConfigStore", () => {
   test("save then load round-trip with non-default cast settings", async () => {
     const custom: UserConfig = {
       motion: "brisk",
+      language: "en",
       theme: "bone",
       color: "never",
       timezone: "America/New_York",
@@ -57,6 +59,7 @@ describe("JsonConfigStore", () => {
     const config = await store.load();
     expect(config).toEqual({
       motion: "deep",
+      language: "zh-Hant",
       theme: "bone",
       color: "auto",
       timezone: "system",
@@ -94,4 +97,20 @@ describe("JsonConfigStore", () => {
     const b = await store.load();
     expect(b.taijituStyle).toBe("dense");
   });
+
+  test("load defaults invalid language values", async () => {
+    await writeFile(join(dir, "config.json"), JSON.stringify({ language: "klingon" }), "utf-8");
+    const loaded = await store.load();
+    expect(loaded.language).toBe("zh-Hant");
+  });
+
+  test("load accepts display language aliases from hand-edited config", async () => {
+    await writeFile(join(dir, "config.json"), JSON.stringify({ language: "简" }), "utf-8");
+    const simplified = await store.load();
+    expect(simplified.language).toBe("zh-Hans");
+
+    await writeFile(join(dir, "config.json"), JSON.stringify({ language: "EN" }), "utf-8");
+    const english = await store.load();
+    expect(english.language).toBe("en");
+  });
 });
diff --git a/packages/storage/src/__tests__/schema-shape.test.ts b/packages/storage/src/__tests__/schema-shape.test.ts
index 2053408..89dfd98 100644
--- a/packages/storage/src/__tests__/schema-shape.test.ts
+++ b/packages/storage/src/__tests__/schema-shape.test.ts
@@ -67,6 +67,7 @@ describe("schema shape — config", () => {
     const store = new JsonConfigStore(join(dir, "config.json"));
     const written: UserConfig = {
       motion: "brisk",
+      language: "en",
       theme: "cinnabar",
       color: "always",
       timezone: "America/Los_Angeles",
diff --git a/packages/storage/src/json/json-config.ts b/packages/storage/src/json/json-config.ts
index dacc076..fb3ea94 100644
--- a/packages/storage/src/json/json-config.ts
+++ b/packages/storage/src/json/json-config.ts
@@ -3,8 +3,19 @@ import type { UserConfig } from "../types.js";
 import type { ConfigStore } from "../config-store.js";
 import { atomicWriteJson } from "./atomic-write.js";
 
+const MOTION_OPTIONS = ["default", "brisk", "deep", "reduced"] as const;
+const LANGUAGE_OPTIONS = ["zh-Hans", "zh-Hant", "en"] as const;
+const THEME_OPTIONS = ["ink", "bone", "cinnabar", "jade", "river"] as const;
+const COLOR_OPTIONS = ["auto", "always", "never"] as const;
+const GLYPH_ANIM_OPTIONS = ["noise", "dots", "radial", "sand"] as const;
+const GLYPH_FONT_OPTIONS = ["kaiti", "libian", "heiti"] as const;
+const TAIJITU_STYLE_OPTIONS = ["dots", "dense"] as const;
+const CAST_METHOD_OPTIONS = ["coin", "yarrow"] as const;
+const CAST_MODE_OPTIONS = ["auto", "manual"] as const;
+
 const DEFAULT_CONFIG: UserConfig = {
   motion: "default",
+  language: "zh-Hant",
   theme: "bone",
   color: "auto",
   timezone: "system",
@@ -24,15 +35,98 @@ const LEGACY_CAST_MODE: Record<string, { method: UserConfig["castMethod"]; mode:
 };
 
 // Legacy theme names → current canonical names.
-const THEME_ALIASES: Record<string, string> = {
+const THEME_ALIASES: Record<string, UserConfig["theme"]> = {
   "temple-night": "cinnabar",
   "lantern": "cinnabar",
   "dawn": "bone",
 };
 
-const VALID_TAIJITU_STYLES = new Set(["dots", "dense"]);
-const VALID_CAST_METHODS = new Set(["coin", "yarrow"]);
-const VALID_CAST_MODES = new Set(["auto", "manual"]);
+// User-visible aliases are accepted for hand-edited config files; the CLI
+// writes stable BCP-47-ish values.
+const LANGUAGE_ALIASES: Record<string, UserConfig["language"]> = {
+  "简": "zh-Hans",
+  "簡": "zh-Hans",
+  "simplified": "zh-Hans",
+  "繁": "zh-Hant",
+  "traditional": "zh-Hant",
+  "EN": "en",
+  "english": "en",
+};
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+  return typeof value === "object" && value !== null && !Array.isArray(value);
+}
+
+function isOneOf<const T extends readonly string[]>(
+  options: T,
+  value: unknown,
+): value is T[number] {
+  return typeof value === "string" && options.includes(value as T[number]);
+}
+
+function stringValue(
+  record: Record<string, unknown>,
+  key: keyof UserConfig,
+): string | undefined {
+  const value = record[key];
+  return typeof value === "string" ? value : undefined;
+}
+
+function normalizeConfig(parsed: unknown): UserConfig {
+  const merged: UserConfig = { ...DEFAULT_CONFIG };
+  if (!isRecord(parsed)) return merged;
+
+  if (isOneOf(MOTION_OPTIONS, parsed.motion)) merged.motion = parsed.motion;
+
+  const rawLanguage = stringValue(parsed, "language");
+  if (isOneOf(LANGUAGE_OPTIONS, rawLanguage)) {
+    merged.language = rawLanguage;
+  } else if (rawLanguage && LANGUAGE_ALIASES[rawLanguage]) {
+    merged.language = LANGUAGE_ALIASES[rawLanguage];
+  }
+
+  const rawTheme = stringValue(parsed, "theme");
+  if (isOneOf(THEME_OPTIONS, rawTheme)) {
+    merged.theme = rawTheme;
+  } else if (rawTheme && THEME_ALIASES[rawTheme]) {
+    merged.theme = THEME_ALIASES[rawTheme];
+  }
+
+  if (isOneOf(COLOR_OPTIONS, parsed.color)) merged.color = parsed.color;
+  if (typeof parsed.timezone === "string") merged.timezone = parsed.timezone;
+  if (isOneOf(GLYPH_ANIM_OPTIONS, parsed.glyphAnim)) merged.glyphAnim = parsed.glyphAnim;
+  if (isOneOf(GLYPH_FONT_OPTIONS, parsed.glyphFont)) merged.glyphFont = parsed.glyphFont;
+
+  const rawTaijituStyle = stringValue(parsed, "taijituStyle");
+  if (isOneOf(TAIJITU_STYLE_OPTIONS, rawTaijituStyle)) {
+    merged.taijituStyle = rawTaijituStyle;
+  } else if (rawTaijituStyle) {
+    merged.taijituStyle = rawTaijituStyle.toLowerCase().includes("dense") ? "dense" : "dots";
+  }
+
+  const rawCastMethod = stringValue(parsed, "castMethod");
+  const rawCastMode = stringValue(parsed, "castMode");
+  if (rawCastMode && rawCastMethod === undefined) {
+    const split = LEGACY_CAST_MODE[rawCastMode];
+    if (split) {
+      merged.castMethod = split.method;
+      merged.castMode = split.mode;
+    }
+  } else {
+    if (isOneOf(CAST_METHOD_OPTIONS, rawCastMethod)) merged.castMethod = rawCastMethod;
+    if (isOneOf(CAST_MODE_OPTIONS, rawCastMode)) {
+      merged.castMode = rawCastMode;
+    } else if (rawCastMode) {
+      const split = LEGACY_CAST_MODE[rawCastMode];
+      if (split) {
+        merged.castMethod = split.method;
+        merged.castMode = split.mode;
+      }
+    }
+  }
+
+  return merged;
+}
 
 export class JsonConfigStore implements ConfigStore {
   constructor(private readonly path: string) {}
@@ -40,54 +134,8 @@ export class JsonConfigStore implements ConfigStore {
   async load(): Promise<UserConfig> {
     try {
       const raw = await readFile(this.path, "utf-8");
-      // Widen castMethod + castMode to plain string for the normalization
-      // checks below — at runtime these can be anything (legacy values, hand
-      // edits) even though their UserConfig types are narrow unions.
-      const partial = JSON.parse(raw) as Omit<Partial<UserConfig>, "castMethod" | "castMode"> & {
-        glyphSize?: unknown;
-        castMethod?: string;
-        castMode?: string;
-      };
-      // Migrate legacy single-string castMode → castMethod + castMode pair.
-      // Old configs only had `castMode`; absence of `castMethod` is the tell.
-      if (partial.castMode && partial.castMethod === undefined) {
-        const split = LEGACY_CAST_MODE[partial.castMode];
-        if (split) {
-          partial.castMethod = split.method;
-          partial.castMode = split.mode;
-        }
-      }
-      // Defense-in-depth: a current-shaped file with both fields can still
-      // carry an out-of-domain value (legacy CLI writes, hand edits, future
-      // schema drift). Route any unknown castMode back through LEGACY_CAST_MODE
-      // when possible, or fall back to the default. Same idiom we already use
-      // for taijituStyle and theme below.
-      if (partial.castMode && !VALID_CAST_MODES.has(partial.castMode)) {
-        const split = LEGACY_CAST_MODE[partial.castMode];
-        if (split) {
-          partial.castMethod = split.method;
-          partial.castMode = split.mode;
-        } else {
-          partial.castMode = DEFAULT_CONFIG.castMode;
-        }
-      }
-      if (partial.castMethod && !VALID_CAST_METHODS.has(partial.castMethod)) {
-        partial.castMethod = DEFAULT_CONFIG.castMethod;
-      }
-      const merged = { ...DEFAULT_CONFIG, ...partial } as UserConfig;
-      // Drop removed glyphSize key from older configs.
-      delete (merged as { glyphSize?: unknown }).glyphSize;
-      // Migrate legacy taijituStyle values (yangDots/yinDots → dots, yangDense/yinDense → dense).
-      const style = merged.taijituStyle as string;
-      if (!VALID_TAIJITU_STYLES.has(style)) {
-        merged.taijituStyle = style.toLowerCase().includes("dense") ? "dense" : "dots";
-      }
-      // Migrate legacy theme names.
-      const aliased = THEME_ALIASES[merged.theme as string];
-      if (aliased) {
-        merged.theme = aliased as UserConfig["theme"];
-      }
-      return merged;
+      const parsed: unknown = JSON.parse(raw);
+      return normalizeConfig(parsed);
     } catch (err: unknown) {
       if ((err as NodeJS.ErrnoException).code === "ENOENT")
         return { ...DEFAULT_CONFIG };
diff --git a/packages/storage/src/schema-keys.ts b/packages/storage/src/schema-keys.ts
index 2d17368..92a5df6 100644
--- a/packages/storage/src/schema-keys.ts
+++ b/packages/storage/src/schema-keys.ts
@@ -15,6 +15,7 @@ export const SCHEMA_KEYS = {
   config: {
     required: [
       "motion",
+      "language",
       "theme",
       "color",
       "timezone",
diff --git a/packages/storage/src/types.ts b/packages/storage/src/types.ts
index 4ac72e1..22424a7 100644
--- a/packages/storage/src/types.ts
+++ b/packages/storage/src/types.ts
@@ -1,4 +1,5 @@
 import type { DailyCache } from "@iching/core";
+import type { DisplayLanguage } from "@iching/core";
 
 /** Re-export DailyCache as DailyCacheRecord for storage-layer naming */
 export type DailyCacheRecord = DailyCache;
@@ -6,6 +7,7 @@ export type DailyCacheRecord = DailyCache;
 /** User-facing configuration */
 export interface UserConfig {
   motion: "default" | "brisk" | "deep" | "reduced";
+  language: DisplayLanguage;
   theme: "ink" | "bone" | "cinnabar" | "jade" | "river";
   color: "auto" | "always" | "never";
   timezone: "system" | string;
diff --git a/packages/terminal/src/__tests__/detail-renderer.test.ts b/packages/terminal/src/__tests__/detail-renderer.test.ts
new file mode 100644
index 0000000..5c7494a
--- /dev/null
+++ b/packages/terminal/src/__tests__/detail-renderer.test.ts
@@ -0,0 +1,127 @@
+import { describe, test, expect } from "bun:test";
+import { DetailModel } from "../scenes/dict/detail-model.ts";
+import { buildContentLines, type ContentLine, type VoiceNode } from "../scenes/dict/detail-renderer.ts";
+
+/**
+ * U6 tests — detail-renderer expansion.
+ *
+ * Verifies the always-on additions (trigram catalogue, relations block with
+ * 序卦/雜卦 + 說卦 citations) and the gating behavior for the optional
+ * fields that U8 will backfill (卦辭, 小象傳). The legacy commentary
+ * sections must still render so existing hexagrams look unchanged from
+ * today.
+ */
+
+const WIDTH = 80;
+
+function findIndex(lines: ContentLine[], pred: (l: ContentLine) => boolean): number {
+  return lines.findIndex(pred);
+}
+
+function someText(lines: ContentLine[], substr: string): boolean {
+  return lines.some((l) => l.text.includes(substr));
+}
+
+describe("buildContentLines — always-on additions", () => {
+  test("renders compact 說卦 trigram catalogue under the trigram line", () => {
+    const model = new DetailModel(1); // 乾 over 乾
+    const lines = buildContentLines(model, WIDTH);
+    // 乾 catalogue: family=父, body=首, animal=馬, direction=西北
+    expect(someText(lines, "父")).toBe(true);
+    expect(someText(lines, "首")).toBe(true);
+    expect(someText(lines, "馬")).toBe(true);
+    expect(someText(lines, "西北")).toBe(true);
+  });
+
+  test("renders Relations header (renamed from Derived)", () => {
+    const model = new DetailModel(3);
+    const lines = buildContentLines(model, WIDTH);
+    expect(someText(lines, "Relations")).toBe(true);
+  });
+
+  test("annotates each derived row with [說卦 ch.N]", () => {
+    const model = new DetailModel(3);
+    const lines = buildContentLines(model, WIDTH);
+    // Each numeric derivation row (互卦/錯卦/綜卦/對角) should carry a 說卦 citation.
+    const derivedRows = lines.filter((l) => l.text.match(/(互卦|錯卦|綜卦|對角)/));
+    expect(derivedRows.length).toBeGreaterThanOrEqual(4);
+    for (const row of derivedRows) {
+      expect(row.text).toMatch(/\[說卦 ch\.\d+\]/);
+    }
+  });
+
+  test("renders 序卦 row with canonical text for hex 3 屯", () => {
+    const model = new DetailModel(3);
+    const lines = buildContentLines(model, WIDTH);
+    expect(someText(lines, "序卦")).toBe(true);
+    // 屯's 序卦 entry contains "故受之以"
+    expect(someText(lines, "故受之以")).toBe(true);
+  });
+
+  test("renders 雜卦 row with canonical text for hex 1 乾", () => {
+    const model = new DetailModel(1);
+    const lines = buildContentLines(model, WIDTH);
+    expect(someText(lines, "雜卦")).toBe(true);
+    // 乾's 雜卦 opening: 《乾》剛《坤》柔
+    expect(someText(lines, "剛")).toBe(true);
+    expect(someText(lines, "柔")).toBe(true);
+  });
+});
+
+describe("buildContentLines — 卦辭 + 小象傳 sections (U8 backfill)", () => {
+  test("renders 卦辭 section header + canonical text for hex 1 乾", () => {
+    const model = new DetailModel(1);
+    const lines = buildContentLines(model, WIDTH);
+    const gcHeaderRow = findIndex(lines, (l) => l.text === "卦辭");
+    expect(gcHeaderRow).toBeGreaterThan(-1);
+    // 乾's 卦辭: 元亨，利貞。 — must appear after the header.
+    expect(someText(lines, "元亨")).toBe(true);
+    expect(someText(lines, "利貞")).toBe(true);
+  });
+
+  test("yao block includes 小象傳 lines after each yaoEn entry for hex 3 屯", () => {
+    const model = new DetailModel(3);
+    const lines = buildContentLines(model, WIDTH);
+    // 屯's 小象 line 1: 雖磐桓，志行正也。
+    expect(someText(lines, "雖磐桓")).toBe(true);
+    expect(someText(lines, "志行正也")).toBe(true);
+  });
+});
+
+describe("buildContentLines — legacy sections preserved", () => {
+  test("includes the existing commentary section headers", () => {
+    const model = new DetailModel(1);
+    const lines = buildContentLines(model, WIDTH);
+    expect(someText(lines, "大象傳")).toBe(true);
+    expect(someText(lines, "彖傳")).toBe(true);
+    expect(someText(lines, "Image")).toBe(true);
+    expect(someText(lines, "Judgment")).toBe(true);
+    expect(someText(lines, "Wilhelm")).toBe(true);
+  });
+
+  test("includes 爻辭 line texts header for hexagrams with yao", () => {
+    const model = new DetailModel(1);
+    const lines = buildContentLines(model, WIDTH);
+    expect(someText(lines, "爻辭")).toBe(true);
+  });
+});
+
+describe("renderStackedVoices helper (scaffolded for U10)", () => {
+  // Exercise the helper directly to lock its contract before U10 wires it.
+
+  test("emits only the voices that have content", () => {
+    const lines: ContentLine[] = [];
+    // We can't import the helper directly (it's private), but we can exercise
+    // it via a synthetic Hexagram with gc populated and a custom buildModel
+    // path. For U6 the simpler proxy is testing through buildContentLines —
+    // gc-populated test path lives in U8. The contract proven here is purely
+    // structural: VoiceNode is exported and typeable.
+    const node: VoiceNode = {
+      zh: "元亨利貞",
+      modernEn: "supreme success through perseverance",
+    };
+    expect(node.zh).toBe("元亨利貞");
+    expect(node.modernEn).toBeDefined();
+    expect(node.leggeEn).toBeUndefined();
+  });
+});
diff --git a/packages/terminal/src/__tests__/detail-scene.test.ts b/packages/terminal/src/__tests__/detail-scene.test.ts
index 5eaff47..5edff80 100644
--- a/packages/terminal/src/__tests__/detail-scene.test.ts
+++ b/packages/terminal/src/__tests__/detail-scene.test.ts
@@ -79,6 +79,13 @@ describe("DetailScene", () => {
     expect(result.kw).toBeLessThanOrEqual(64);
   });
 
+  test("s on derived opens the selected 說卦 chapter", () => {
+    const scene = new DetailScene(1);
+    scene.handleKey({ type: "tab" }, makeCtx()); // focus derived
+    const signal = scene.handleKey({ type: "char", char: "s" }, makeCtx());
+    expect(signal).toEqual({ type: "openShuoguaChapter", chapter: 3, op: "nuclear" });
+  });
+
   test("setHistory updates model", () => {
     const scene = new DetailScene(1);
     scene.setHistory(3, "2026-03-28");
diff --git a/packages/terminal/src/__tests__/settings-scene.test.ts b/packages/terminal/src/__tests__/settings-scene.test.ts
new file mode 100644
index 0000000..abd4ab5
--- /dev/null
+++ b/packages/terminal/src/__tests__/settings-scene.test.ts
@@ -0,0 +1,53 @@
+import { describe, expect, test } from "bun:test";
+import { SettingsScene } from "../scenes/settings/settings-scene.ts";
+import { CellBuffer } from "../render/buffer.ts";
+import type { SceneContext } from "../scene/types.ts";
+
+function makeCtx(cols = 80, rows = 24): SceneContext {
+  return { cols, rows, done: false, colorSupport: "none" };
+}
+
+function makeScene(language: "zh-Hans" | "zh-Hant" | "en" = "zh-Hant"): SettingsScene {
+  return new SettingsScene({
+    theme: "bone",
+    language,
+    taijituStyle: "dots",
+    glyphAnim: "dots",
+    glyphFont: "kaiti",
+    castMethod: "coin",
+    castMode: "auto",
+  });
+}
+
+function bufferText(buf: CellBuffer): string {
+  return Array.from({ length: buf.height }, (_, row) =>
+    buf.getRow(row).map((cell) => cell.char).join(""),
+  ).join("\n");
+}
+
+describe("SettingsScene language", () => {
+  test("preserves the initial language value", () => {
+    const scene = makeScene("en");
+    expect(scene.getValues().language).toBe("en");
+  });
+
+  test("renders compact language choices", () => {
+    const scene = makeScene();
+    const ctx = makeCtx();
+    const buf = CellBuffer.create(ctx.cols, ctx.rows);
+    scene.render(buf, ctx);
+    const text = bufferText(buf);
+    expect(text).toContain("Language");
+    expect(text).toContain("简");
+    expect(text).toContain("繁");
+    expect(text).toContain("EN");
+  });
+
+  test("left/right changes the language row", () => {
+    const scene = makeScene("zh-Hant");
+    const ctx = makeCtx();
+    scene.handleKey({ type: "arrow", direction: "down" }, ctx);
+    scene.handleKey({ type: "arrow", direction: "right" }, ctx);
+    expect(scene.getValues().language).toBe("en");
+  });
+});
diff --git a/packages/terminal/src/__tests__/shuogua-chapter-scene.test.ts b/packages/terminal/src/__tests__/shuogua-chapter-scene.test.ts
new file mode 100644
index 0000000..43234d8
--- /dev/null
+++ b/packages/terminal/src/__tests__/shuogua-chapter-scene.test.ts
@@ -0,0 +1,72 @@
+import { describe, test, expect } from "bun:test";
+import { ShuoGuaChapterScene } from "../scenes/dict/shuogua-chapter-scene.ts";
+import { CellBuffer } from "../render/buffer.ts";
+import type { SceneContext } from "../scene/types.ts";
+
+function makeCtx(cols = 80, rows = 24): SceneContext {
+  return { cols, rows, done: false, colorSupport: "none" as any };
+}
+
+function bufferText(buf: CellBuffer): string {
+  return Array.from({ length: buf.height }, (_, row) =>
+    buf.getRow(row).map((cell) => cell.char).join(""),
+  ).join("\n");
+}
+
+describe("ShuoGuaChapterScene", () => {
+  test("constructs for a cited chapter", () => {
+    const scene = new ShuoGuaChapterScene(3);
+    expect(scene.getChapter()).toBe(3);
+  });
+
+  test("preserves the selected derivation op", () => {
+    const scene = new ShuoGuaChapterScene(3, "nuclear");
+    expect(scene.getOp()).toBe("nuclear");
+  });
+
+  test("clamps invalid chapter numbers to the available 說卦 range", () => {
+    expect(new ShuoGuaChapterScene(0).getChapter()).toBe(1);
+    expect(new ShuoGuaChapterScene(99).getChapter()).toBe(11);
+  });
+
+  test("render does not crash", () => {
+    const scene = new ShuoGuaChapterScene(6);
+    const ctx = makeCtx();
+    scene.enter(ctx);
+    scene.render(CellBuffer.create(80, 24), ctx);
+    expect(true).toBe(true);
+  });
+
+  test("renders canonical text, working translation, and derivation relevance", () => {
+    const scene = new ShuoGuaChapterScene(3, "nuclear");
+    const ctx = makeCtx(96, 40);
+    const buf = CellBuffer.create(ctx.cols, ctx.rows);
+    scene.enter(ctx);
+    scene.render(buf, ctx);
+    const text = bufferText(buf);
+    expect(text).toContain("Canonical");
+    expect(text).toContain("天地定位");
+    expect(text).toContain("Working translation");
+    expect(text).toContain("Heaven and earth settle their positions");
+    expect(text).toContain("Why this citation matters");
+    expect(text).toContain("inner line structure");
+  });
+
+  test("renders trigram table rows for catalogue chapters", () => {
+    const scene = new ShuoGuaChapterScene(7, "becoming");
+    const ctx = makeCtx(96, 40);
+    const buf = CellBuffer.create(ctx.cols, ctx.rows);
+    scene.enter(ctx);
+    scene.render(buf, ctx);
+    const text = bufferText(buf);
+    expect(text).toContain("Trigram table");
+    expect(text).toContain("☰ 乾 健 / strength");
+    expect(text).toContain("☱ 兌 說 / joy");
+  });
+
+  test("escape and q return back", () => {
+    const scene = new ShuoGuaChapterScene(2);
+    expect(scene.handleKey({ type: "escape" }, makeCtx())).toEqual({ type: "back" });
+    expect(scene.handleKey({ type: "char", char: "q" }, makeCtx())).toEqual({ type: "back" });
+  });
+});
diff --git a/packages/terminal/src/index.ts b/packages/terminal/src/index.ts
index 8c0c039..4834d21 100644
--- a/packages/terminal/src/index.ts
+++ b/packages/terminal/src/index.ts
@@ -163,4 +163,5 @@ export { BrowseScene } from "./scenes/dict/browse-scene.ts";
 export { BrowseModel } from "./scenes/dict/browse-model.ts";
 export { DetailScene, type DetailGlyphConfig } from "./scenes/dict/detail-scene.ts";
 export { DetailModel } from "./scenes/dict/detail-model.ts";
+export { ShuoGuaChapterScene } from "./scenes/dict/shuogua-chapter-scene.ts";
 export { wordWrap } from "./scenes/dict/word-wrap.ts";
diff --git a/packages/terminal/src/scene/types.ts b/packages/terminal/src/scene/types.ts
index 4bd6589..4d07c7c 100644
--- a/packages/terminal/src/scene/types.ts
+++ b/packages/terminal/src/scene/types.ts
@@ -1,6 +1,6 @@
 // Scene interface — lifecycle contract for terminal scenes
 
-import type { Cast } from "@iching/core";
+import type { Cast, DerivedType } from "@iching/core";
 import type { CellBuffer } from "../render/buffer.ts";
 import type { KeyEvent } from "../input/key-parser.ts";
 import type { ColorSupport } from "../color/detect.ts";
@@ -35,6 +35,7 @@ export type SceneSignal =
   | { type: "openSettings" }      // open the settings editor
   // Cast / dictionary navigation
   | { type: "openDetail"; kw: number }
+  | { type: "openShuoguaChapter"; chapter: number; op?: DerivedType }
   | { type: "openJournalReading"; key: string }
   // Inner-flow events
   | { type: "intentionConfirmed" } // intention input completed
diff --git a/packages/terminal/src/scenes/dict/detail-model.ts b/packages/terminal/src/scenes/dict/detail-model.ts
index f15099f..ee7ad68 100644
--- a/packages/terminal/src/scenes/dict/detail-model.ts
+++ b/packages/terminal/src/scenes/dict/detail-model.ts
@@ -1,11 +1,17 @@
 // DetailModel — scroll position, focused section, selected derived link
 
-import { type HexagramDetail, type GlyphEntry, buildHexagramDetail } from "@iching/core";
+import {
+  type HexagramDetail,
+  type GlyphEntry,
+  type DerivedType,
+  buildHexagramDetail,
+} from "@iching/core";
 import type { GlyphAnimator } from "../../glyph-anim/types.ts";
 
 export type DetailFocus = "content" | "derived";
 
 export interface DerivedLink {
+  op: DerivedType;
   label: string;
   labelCn: string;
   kw: number;
@@ -59,6 +65,7 @@ export class DetailModel {
     const d = this.detail;
     this.derivedLinks = [
       {
+        op: "nuclear",
         label: "Nuclear",
         labelCn: "互卦",
         kw: d.nuclear.kw,
@@ -67,6 +74,7 @@ export class DetailModel {
         ename: d.nuclear.gua.ename,
       },
       {
+        op: "polarity",
         label: "Polarity",
         labelCn: "錯卦",
         kw: d.polarity.kw,
@@ -75,6 +83,7 @@ export class DetailModel {
         ename: d.polarity.gua.ename,
       },
       {
+        op: "mirror",
         label: "Mirror",
         labelCn: "綜卦",
         kw: d.mirror.kw,
@@ -83,6 +92,7 @@ export class DetailModel {
         ename: d.mirror.gua.ename,
       },
       {
+        op: "diagonal",
         label: "Diagonal",
         labelCn: "對角",
         kw: d.diagonal.kw,
@@ -121,4 +131,17 @@ export class DetailModel {
   selectedDerivedKW(): number {
     return this.derivedLinks[this.derivedCursor].kw;
   }
+
+  selectedShuoguaChapter(): number | undefined {
+    const op = this.derivedLinks[this.derivedCursor].op;
+    return this.detail.connections.shuoguaCitations.find(
+      (citation) => citation.op === op,
+    )?.chapter;
+  }
+
+  selectedShuoguaCitation(): { chapter: number; op: DerivedType } | undefined {
+    const op = this.derivedLinks[this.derivedCursor].op;
+    const chapter = this.selectedShuoguaChapter();
+    return chapter === undefined ? undefined : { chapter, op };
+  }
 }
diff --git a/packages/terminal/src/scenes/dict/detail-renderer.ts b/packages/terminal/src/scenes/dict/detail-renderer.ts
index bd46833..133089d 100644
--- a/packages/terminal/src/scenes/dict/detail-renderer.ts
+++ b/packages/terminal/src/scenes/dict/detail-renderer.ts
@@ -2,9 +2,9 @@
 
 import type { CellBuffer } from "../../render/buffer.ts";
 import type { SceneContext } from "../../scene/types.ts";
-import type { DetailModel, DerivedLink } from "./detail-model.ts";
+import type { DetailModel } from "./detail-model.ts";
 import { getTheme } from "../../color/theme.ts";
-import { stringWidth, centerPad } from "../../layout/measure.ts";
+import { centerPad } from "../../layout/measure.ts";
 import { wordWrap } from "./word-wrap.ts";
 import { GLYPHS } from "../../glyphs.ts";
 
@@ -19,121 +19,233 @@ export interface ContentLine {
   dim?: boolean;
 }
 
-/** Build all content lines for the detail view */
-export function buildContentLines(model: DetailModel, width: number): ContentLine[] {
-  const t = getTheme();
-  const lines: ContentLine[] = [];
-  const gua = model.detail.gua;
-  const textWidth = width - PADDING * 2;
+/**
+ * A multi-voice text node — canonical zh plus zero or more English voices.
+ * Used by the stacked-voice renderer for 卦辭 and similar surfaces that
+ * stack a zh canonical row above one or more dim English voices.
+ */
+export interface VoiceNode {
+  zh?: string;
+  modernEn?: string;
+  wilhelmEn?: string;
+  leggeEn?: string;
+}
 
-  // Large glyph placeholder rows (scrolls with content)
-  if (model.glyphEntry) {
-    // Reserve rows for the glyph - render pass fills them in
-    for (let r = 0; r < model.glyphEntry.height; r++) {
-      lines.push({ text: "", _glyphRow: r } as ContentLine & { _glyphRow: number });
-    }
-    lines.push({ text: "" }); // spacer after glyph
+type Theme = ReturnType<typeof getTheme>;
+type ContentStyle = Omit<ContentLine, "text">;
+type Gua = DetailModel["detail"]["gua"];
+type Structure = DetailModel["detail"]["structure"];
+
+// ─── shared helpers ──────────────────────────────────────────────────────────
+
+/**
+ * Wrap `text` to `textWidth` and push each wrapped row onto `lines` with the
+ * given style. Compresses the `wordWrap` + `for` + `push` pattern that
+ * appears across every per-section helper below.
+ */
+function pushWrapped(
+  lines: ContentLine[],
+  textWidth: number,
+  text: string,
+  style: ContentStyle,
+): void {
+  for (const wl of wordWrap(text, textWidth)) {
+    lines.push({ text: wl, ...style });
   }
+}
 
-  // Header — centered name (omit Unicode symbol when glyph present)
+/**
+ * Render a translation-voice stack: canonical zh + each populated English
+ * voice in fixed order (modern → wilhelm-flavored → legge). Each voice row
+ * only emits when its content exists, so future lineages plug in without
+ * touching call sites. Empty input emits nothing.
+ */
+function renderStackedVoices(
+  lines: ContentLine[],
+  textWidth: number,
+  t: Theme,
+  node: VoiceNode,
+): void {
+  if (node.zh) pushWrapped(lines, textWidth, node.zh, { fg: t.primary });
+  if (node.modernEn) pushWrapped(lines, textWidth, node.modernEn, { fg: t.secondary });
+  if (node.wilhelmEn) pushWrapped(lines, textWidth, node.wilhelmEn, { fg: t.secondary, dim: true });
+  if (node.leggeEn) pushWrapped(lines, textWidth, node.leggeEn, { fg: t.secondary, dim: true });
+}
+
+// ─── per-section builders ────────────────────────────────────────────────────
+
+/** Reserve rows for the large glyph; the render pass fills them in. */
+function renderGlyphPlaceholder(lines: ContentLine[], model: DetailModel): void {
+  if (!model.glyphEntry) return;
+  for (let r = 0; r < model.glyphEntry.height; r++) {
+    lines.push({ text: "", _glyphRow: r } as ContentLine & { _glyphRow: number });
+  }
+  lines.push({ text: "" });
+}
+
+/** Centered name + pinyin + ename. Omits the Unicode symbol when a large glyph is present. */
+function renderHeader(lines: ContentLine[], model: DetailModel, textWidth: number, t: Theme): void {
+  const gua = model.detail.gua;
   const headerText = model.glyphEntry
     ? `${gua.n} ${gua.p}`
     : `${gua.u} ${gua.n} ${gua.p}`;
-  lines.push({
-    text: centerPad(headerText, textWidth),
-    fg: t.primary,
-    bold: true,
-  });
-  lines.push({
-    text: centerPad(gua.ename, textWidth),
-    fg: t.accent,
-  });
+  lines.push({ text: centerPad(headerText, textWidth), fg: t.primary, bold: true });
+  lines.push({ text: centerPad(gua.ename, textWidth), fg: t.accent });
   lines.push({ text: "" });
+}
 
-  // Line diagram (top to bottom: line 6 down to line 1)
+/** Yang/yin glyph stack rendered top-to-bottom (line 6 down to line 1) with a gap between trigrams. */
+function renderLineDiagram(lines: ContentLine[], gua: Gua, textWidth: number, t: Theme): void {
   for (let i = 5; i >= 0; i--) {
     const lineChar = gua.l[i] === 1 ? GLYPHS.yangFinal : GLYPHS.yinFinal;
     lines.push({ text: centerPad(lineChar, textWidth), fg: t.primary });
-    // Add gap between upper and lower trigrams (after line 4, before line 3)
-    if (i === 3) {
-      lines.push({ text: "" });
-    }
+    if (i === 3) lines.push({ text: "" });
   }
   lines.push({ text: "" });
+}
 
-  // Trigram info
-  const s = model.detail.structure;
+/** Trigram info line + compact 說卦 catalogue (always when both trigrams have assoc populated). */
+function renderTrigramCatalogue(
+  lines: ContentLine[],
+  s: Structure,
+  textWidth: number,
+  t: Theme,
+): void {
   const trigramLine = `${s.upper.sym} ${s.upper.n} ${s.upper.img} above  ${s.lower.sym} ${s.lower.n} ${s.lower.img}`;
-  lines.push({
-    text: centerPad(trigramLine, textWidth),
-    fg: t.secondary,
-  });
+  lines.push({ text: centerPad(trigramLine, textWidth), fg: t.secondary });
+  if (s.upper.assoc && s.lower.assoc) {
+    const upperCat = `${s.upper.assoc.family} ${s.upper.assoc.body} ${s.upper.assoc.animal} ${s.upper.assoc.direction}`;
+    const lowerCat = `${s.lower.assoc.family} ${s.lower.assoc.body} ${s.lower.assoc.animal} ${s.lower.assoc.direction}`;
+    lines.push({
+      text: centerPad(`${upperCat}  ·  ${lowerCat}`, textWidth),
+      fg: t.tertiary,
+      dim: true,
+    });
+  }
+}
 
-  // Separator
-  lines.push({ text: "" });
-  lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
+/** 卦辭 (root oracle). Gated on `gua.gc` presence. */
+function renderCanonicalOracle(lines: ContentLine[], gua: Gua, textWidth: number, t: Theme): void {
+  if (!gua.gc) return;
+  lines.push({ text: "卦辭", fg: t.accent, bold: true });
+  renderStackedVoices(lines, textWidth, t, { zh: gua.gc, leggeEn: gua.gcEn });
   lines.push({ text: "" });
+}
 
-  // Commentary sections
-  const sections: [string, string][] = [
-    ["大象傳", gua.dx],
-    ["彖傳", gua.tu],
-    ["Image", gua.en],
-    ["Judgment", gua.te],
-    ["Wilhelm", gua.w],
+/**
+ * 大象傳 / 彖傳 / Image / Judgment / Wilhelm — each with an optional Legge
+ * sibling row when applicable. The Judgment section deliberately has no
+ * Legge sibling because Legge translates 卦辭 (already shown above), not
+ * 彖傳 (which is what `gua.te` renders).
+ */
+function renderCommentarySections(lines: ContentLine[], gua: Gua, textWidth: number, t: Theme): void {
+  type Section = { label: string; text: string; legge?: string };
+  const sections: Section[] = [
+    { label: "大象傳", text: gua.dx },
+    { label: "彖傳", text: gua.tu },
+    { label: "Image", text: gua.en, legge: gua.legge?.image },
+    { label: "Judgment", text: gua.te },
+    { label: "Wilhelm", text: gua.w },
   ];
-
-  for (const [label, text] of sections) {
-    lines.push({ text: label, fg: t.accent, bold: true });
-    const wrapped = wordWrap(text, textWidth);
-    for (const wl of wrapped) {
-      lines.push({ text: wl, fg: t.secondary });
-    }
+  for (const section of sections) {
+    lines.push({ text: section.label, fg: t.accent, bold: true });
+    pushWrapped(lines, textWidth, section.text, { fg: t.secondary });
+    if (section.legge) pushWrapped(lines, textWidth, section.legge, { fg: t.secondary, dim: true });
     lines.push({ text: "" });
   }
+}
 
-  // Line interpretations (爻辭)
-  if (gua.yao && gua.yao.length === 6) {
-    lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
-    lines.push({ text: "" });
-    lines.push({ text: "爻辭 Line Texts", fg: t.accent, bold: true });
+/**
+ * 爻辭 block — for each of 6 lines: zh + yaoEn + legge.lines[i] + 小象 zh.
+ * For hex 1 and 2, appends a trailing 用九 / 用六 section sourced from
+ * Legge's 7th line (zh is not in `gua.yao`, sized 6).
+ */
+function renderYaoBlock(
+  lines: ContentLine[],
+  gua: Gua,
+  kw: number,
+  textWidth: number,
+  t: Theme,
+): void {
+  if (!gua.yao || gua.yao.length !== 6) return;
+  lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
+  lines.push({ text: "" });
+  lines.push({ text: "爻辭 Line Texts", fg: t.accent, bold: true });
+  lines.push({ text: "" });
+
+  for (let i = 5; i >= 0; i--) {
+    pushWrapped(lines, textWidth, gua.yao[i], { fg: t.secondary });
+    if (gua.yaoEn?.[i]) pushWrapped(lines, textWidth, gua.yaoEn[i], { fg: t.tertiary });
+    if (gua.legge?.lines[i]) pushWrapped(lines, textWidth, gua.legge.lines[i], { fg: t.tertiary, dim: true });
+    // 小象傳 — zh only (Legge does not translate per-line 小象; Appendix II not in our pull).
+    if (gua.yaoXiao?.[i]) pushWrapped(lines, textWidth, gua.yaoXiao[i], { fg: t.tertiary, dim: true });
     lines.push({ text: "" });
+  }
 
-    // Display top-to-bottom (line 6 down to line 1) to match visual diagram
-    for (let i = 5; i >= 0; i--) {
-      // Chinese line text
-      const wrapped = wordWrap(gua.yao[i], textWidth);
-      for (const wl of wrapped) {
-        lines.push({ text: wl, fg: t.secondary });
-      }
-      // English translation
-      if (gua.yaoEn && gua.yaoEn[i]) {
-        const wrappedEn = wordWrap(gua.yaoEn[i], textWidth);
-        for (const wl of wrappedEn) {
-          lines.push({ text: wl, fg: t.tertiary });
-        }
-      }
-      lines.push({ text: "" });
+  if (gua.legge && gua.legge.lines.length > 6) {
+    const label = kw === 1 ? "用九" : kw === 2 ? "用六" : "用爻";
+    lines.push({ text: label, fg: t.accent, bold: true });
+    for (let j = 6; j < gua.legge.lines.length; j++) {
+      pushWrapped(lines, textWidth, gua.legge.lines[j], { fg: t.secondary, dim: true });
     }
+    lines.push({ text: "" });
   }
+}
 
-  // Separator before derived
+/**
+ * Relations block — numeric derivations with 說卦 chapter citations, then
+ * the text-bearing 序卦 (sequence) + 雜卦 (contrast) rows. xuGua /
+ * zaGuaPair are populated by buildConnections() for every valid hex 1..64.
+ */
+function renderRelationsBlock(
+  lines: ContentLine[],
+  model: DetailModel,
+  textWidth: number,
+  t: Theme,
+): void {
   lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
   lines.push({ text: "" });
+  lines.push({ text: "Relations", fg: t.accent, bold: true });
 
-  // Derived hexagrams
-  lines.push({ text: "Derived", fg: t.accent, bold: true });
+  const connections = model.detail.connections;
+  const citationByOp = new Map(
+    connections.shuoguaCitations.map((c) => [c.op, c.chapter]),
+  );
   for (let i = 0; i < model.derivedLinks.length; i++) {
     const link = model.derivedLinks[i];
     const isSelected = model.focus === "derived" && model.derivedCursor === i;
     const marker = isSelected ? ">" : " ";
+    const chapter = citationByOp.get(link.op);
+    const citation = chapter !== undefined ? `  [說卦 ch.${chapter}]` : "";
     lines.push({
-      text: `${marker} ${link.labelCn} ${link.label.padEnd(10)} ${link.symbol} ${link.name}  ${link.ename}`,
+      text: `${marker} ${link.labelCn} ${link.label.padEnd(10)} ${link.symbol} ${link.name}  ${link.ename}${citation}`,
       fg: isSelected ? t.primary : t.secondary,
     });
   }
+  if (connections.xuGua) {
+    lines.push({ text: "" });
+    pushWrapped(lines, textWidth, `序卦 ← ${connections.xuGua.text}`, { fg: t.secondary });
+    if (connections.xuGua.textEn) {
+      pushWrapped(lines, textWidth, connections.xuGua.textEn, { fg: t.tertiary, dim: true });
+    }
+  }
+  if (connections.zaGuaPair) {
+    const partners = connections.zaGuaPair.names.join(" · ");
+    const suffix = partners.length > 0 ? `  (${partners})` : "";
+    pushWrapped(lines, textWidth, `雜卦 ↔ ${connections.zaGuaPair.text}${suffix}`, { fg: t.secondary });
+    if (connections.zaGuaPair.textEn) {
+      pushWrapped(lines, textWidth, connections.zaGuaPair.textEn, { fg: t.tertiary, dim: true });
+    }
+  }
+}
 
-  // Locked pair
+/** Locked-pair badge + history line. */
+function renderFooterTrails(
+  lines: ContentLine[],
+  model: DetailModel,
+  textWidth: number,
+  t: Theme,
+): void {
   if (model.detail.isLocked && model.detail.lockedPartner) {
     lines.push({ text: "" });
     lines.push({
@@ -141,22 +253,45 @@ export function buildContentLines(model: DetailModel, width: number): ContentLin
       fg: t.tertiary,
     });
   }
-
   lines.push({ text: "" });
-
-  // Separator before history
   lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
-
-  // History
   const historyText =
     model.castCount > 0
       ? `Cast ${model.castCount} time${model.castCount !== 1 ? "s" : ""} (last: ${model.lastCastDate})`
       : "No history";
   lines.push({ text: historyText, fg: t.tertiary, dim: true });
+}
+
+// ─── orchestrator ────────────────────────────────────────────────────────────
+
+/** Build all content lines for the detail view. */
+export function buildContentLines(model: DetailModel, width: number): ContentLine[] {
+  const t = getTheme();
+  const lines: ContentLine[] = [];
+  const textWidth = width - PADDING * 2;
+  const gua = model.detail.gua;
+
+  renderGlyphPlaceholder(lines, model);
+  renderHeader(lines, model, textWidth, t);
+  renderLineDiagram(lines, gua, textWidth, t);
+  renderTrigramCatalogue(lines, model.detail.structure, textWidth, t);
+
+  // Separator before the commentary block.
+  lines.push({ text: "" });
+  lines.push({ text: "─".repeat(textWidth), fg: t.tertiary });
+  lines.push({ text: "" });
+
+  renderCanonicalOracle(lines, gua, textWidth, t);
+  renderCommentarySections(lines, gua, textWidth, t);
+  renderYaoBlock(lines, gua, model.detail.kw, textWidth, t);
+  renderRelationsBlock(lines, model, textWidth, t);
+  renderFooterTrails(lines, model, textWidth, t);
 
   return lines;
 }
 
+// ─── render pipeline ─────────────────────────────────────────────────────────
+
 /** Render the detail view */
 export function renderDetail(
   frame: CellBuffer,
@@ -192,7 +327,7 @@ export function renderDetail(
         const t = getTheme();
         const chars = [...(glyphEntry.rows[gr] ?? "")];
         for (let c = 0; c < chars.length; c++) {
-          if (chars[c] === "\u2800" || chars[c] === " ") continue;
+          if (chars[c] === "⠀" || chars[c] === " ") continue;
           frame.writeText(row, glyphCol + c, chars[c], { fg: t.primary });
         }
       }
@@ -238,7 +373,7 @@ function renderFooter(
 
   const keys =
     model.focus === "derived"
-      ? "[↑↓] select  ·  [enter] open  ·  [tab] scroll  ·  [esc] back"
+      ? "[↑↓] select  ·  [enter] hex  ·  [s] chapter  ·  [tab] scroll  ·  [esc] back"
       : "[↑↓] scroll  ·  [tab] derived  ·  [enter] open  ·  [esc] back";
 
   const indicator =
diff --git a/packages/terminal/src/scenes/dict/detail-scene.ts b/packages/terminal/src/scenes/dict/detail-scene.ts
index 773efee..4741f3f 100644
--- a/packages/terminal/src/scenes/dict/detail-scene.ts
+++ b/packages/terminal/src/scenes/dict/detail-scene.ts
@@ -137,6 +137,11 @@ export class DetailScene implements Scene {
       const kw = this.model.selectedDerivedKW();
       return { type: "openDetail", kw };
     }
+
+    if (key.type === "char" && key.char === "s" && this.model.focus === "derived") {
+      const citation = this.model.selectedShuoguaCitation();
+      if (citation) return { type: "openShuoguaChapter", ...citation };
+    }
   }
 
   /** Expose model for testing */
diff --git a/packages/terminal/src/scenes/dict/shuogua-chapter-scene.ts b/packages/terminal/src/scenes/dict/shuogua-chapter-scene.ts
new file mode 100644
index 0000000..a294e82
--- /dev/null
+++ b/packages/terminal/src/scenes/dict/shuogua-chapter-scene.ts
@@ -0,0 +1,227 @@
+// ShuoGuaChapterScene — scrollable 說卦傳 chapter reader
+
+import {
+  DERIVED_LABELS,
+  SHUO_GUA,
+  SHUOGUA_DERIVATION_CONTEXT,
+  TRIGRAMS,
+  TRIGRAM_ASSOC_GLOSS_EN,
+  type DerivedType,
+} from "@iching/core";
+import type { Scene, SceneContext, SceneSignal } from "../../scene/types.ts";
+import type { CellBuffer } from "../../render/buffer.ts";
+import type { KeyEvent } from "../../input/key-parser.ts";
+import { getTheme } from "../../color/theme.ts";
+import { centerPad } from "../../layout/measure.ts";
+import { wordWrap } from "./word-wrap.ts";
+
+const FOOTER_ROWS = 2;
+const PADDING = 2;
+const TRIGRAM_ORDER = ["乾", "坤", "震", "巽", "坎", "離", "艮", "兌"] as const;
+
+type ContentLine = { text: string; fg?: string; bold?: boolean; dim?: boolean };
+type Theme = ReturnType<typeof getTheme>;
+
+export class ShuoGuaChapterScene implements Scene {
+  private readonly chapter: number;
+  private readonly op?: DerivedType;
+  private scrollOffset = 0;
+  private contentHeight = 0;
+  private viewportHeight = 20;
+
+  constructor(chapter: number, op?: DerivedType) {
+    this.chapter = Math.min(Math.max(Math.trunc(chapter), 1), SHUO_GUA.chapters.length);
+    this.op = op;
+  }
+
+  enter(ctx: SceneContext): void {
+    this.viewportHeight = ctx.rows - FOOTER_ROWS;
+    this.contentHeight = this.buildLines(ctx.cols).length;
+  }
+
+  update(_elapsed: number, _dt: number, _ctx: SceneContext): void {}
+
+  resize(cols: number, rows: number): void {
+    this.viewportHeight = rows - FOOTER_ROWS;
+    this.contentHeight = this.buildLines(cols).length;
+    this.scrollOffset = Math.min(this.scrollOffset, this.maxScroll());
+  }
+
+  render(frame: CellBuffer, ctx: SceneContext): void {
+    const lines = this.buildLines(ctx.cols);
+    this.contentHeight = lines.length;
+
+    const visibleEnd = Math.min(lines.length, this.scrollOffset + this.viewportHeight);
+    for (let i = this.scrollOffset; i < visibleEnd; i++) {
+      const row = i - this.scrollOffset;
+      const line = lines[i];
+      frame.writeText(row, PADDING, line.text, {
+        fg: line.fg,
+        bold: line.bold,
+        dim: line.dim,
+      });
+    }
+
+    this.renderFooter(frame, ctx);
+  }
+
+  handleKey(key: KeyEvent, _ctx: SceneContext): SceneSignal | void {
+    if (key.type === "char" && key.char === "q") return { type: "back" };
+    if (key.type === "ctrl" && key.char === "c") return { type: "exit" };
+    if (key.type === "escape" || key.type === "backspace") return { type: "back" };
+
+    if (key.type === "arrow") {
+      if (key.direction === "up") this.scrollUp();
+      if (key.direction === "down") this.scrollDown();
+      return;
+    }
+    if (key.type === "page") {
+      if (key.direction === "up") this.scrollUp(this.viewportHeight);
+      if (key.direction === "down") this.scrollDown(this.viewportHeight);
+      return;
+    }
+    if (key.type === "home") {
+      this.scrollOffset = 0;
+      return;
+    }
+    if (key.type === "end") {
+      this.scrollOffset = this.maxScroll();
+    }
+  }
+
+  getChapter(): number {
+    return this.chapter;
+  }
+
+  getOp(): DerivedType | undefined {
+    return this.op;
+  }
+
+  private scrollUp(n = 1): void {
+    this.scrollOffset = Math.max(0, this.scrollOffset - n);
+  }
+
+  private scrollDown(n = 1): void {
+    this.scrollOffset = Math.min(this.maxScroll(), this.scrollOffset + n);
+  }
+
+  private maxScroll(): number {
+    return Math.max(0, this.contentHeight - this.viewportHeight);
+  }
+
+  private buildLines(width: number): ContentLine[] {
+    const t = getTheme();
+    const textWidth = Math.max(1, width - PADDING * 2);
+    const chapter = SHUO_GUA.chapters[this.chapter - 1];
+    const lines: ContentLine[] = [
+      { text: centerPad(`說卦傳 ch.${this.chapter}`, textWidth), fg: t.primary, bold: true },
+      { text: centerPad("Discussion of the Trigrams", textWidth), fg: t.accent },
+      { text: "" },
+    ];
+
+    this.addSection(lines, textWidth, t, "Canonical", chapter?.text ?? "", { fg: t.secondary });
+    this.addSection(lines, textWidth, t, "Working translation", chapter?.modernEn ?? "", {
+      fg: t.secondary,
+      dim: true,
+    });
+    this.addRelevanceSection(lines, textWidth, t);
+    this.addTrigramTable(lines, textWidth, t);
+
+    return lines;
+  }
+
+  private addSection(
+    lines: ContentLine[],
+    textWidth: number,
+    t: Theme,
+    label: string,
+    text: string,
+    style: Omit<ContentLine, "text">,
+  ): void {
+    if (!text) return;
+    lines.push({ text: label, fg: t.accent, bold: true });
+    for (const row of wordWrap(text, textWidth)) {
+      lines.push({ text: row, ...style });
+    }
+    lines.push({ text: "" });
+  }
+
+  private addRelevanceSection(lines: ContentLine[], textWidth: number, t: Theme): void {
+    if (this.op) {
+      const context = SHUOGUA_DERIVATION_CONTEXT[this.op];
+      const heading = `Why this citation matters — ${DERIVED_LABELS[this.op]}`;
+      this.addSection(lines, textWidth, t, heading, context.relevance, { fg: t.secondary });
+      return;
+    }
+
+    const citedBy = Object.entries(SHUOGUA_DERIVATION_CONTEXT)
+      .filter(([, context]) => context.chapter === this.chapter)
+      .map(([op, context]) => `${DERIVED_LABELS[op as DerivedType]} — ${context.title}`);
+    if (citedBy.length === 0) return;
+
+    lines.push({ text: "Cited by", fg: t.accent, bold: true });
+    for (const row of citedBy) {
+      lines.push({ text: row, fg: t.secondary });
+    }
+    lines.push({ text: "" });
+  }
+
+  private addTrigramTable(lines: ContentLine[], textWidth: number, t: Theme): void {
+    const tableRows = this.trigramTableRows();
+    if (tableRows.length === 0) return;
+
+    lines.push({ text: "Trigram table", fg: t.accent, bold: true });
+    lines.push({ text: "Project glosses in English; canonical fields remain Chinese.", fg: t.tertiary, dim: true });
+    for (const row of tableRows) {
+      for (const wrapped of wordWrap(row, textWidth)) {
+        lines.push({ text: wrapped, fg: t.secondary });
+      }
+    }
+    lines.push({ text: "" });
+  }
+
+  private trigramTableRows(): string[] {
+    if (![5, 7, 8, 9, 10, 11].includes(this.chapter)) return [];
+
+    return TRIGRAM_ORDER.map((name) => {
+      const trigram = TRIGRAMS.find((t) => t.n === name);
+      const assoc = trigram?.assoc;
+      const gloss = TRIGRAM_ASSOC_GLOSS_EN[name];
+      const prefix = `${trigram?.sym ?? ""} ${name}`;
+
+      if (!assoc || !gloss) return prefix;
+
+      switch (this.chapter) {
+        case 5:
+          return `${prefix}  ${assoc.direction} / ${gloss.direction}  ${assoc.cosmologicalRole ?? ""}`.trim();
+        case 7:
+          return `${prefix}  ${assoc.attribute} / ${gloss.attribute}`;
+        case 8:
+          return `${prefix}  ${assoc.animal} / ${gloss.animal}`;
+        case 9:
+          return `${prefix}  ${assoc.body} / ${gloss.body}`;
+        case 10:
+          return `${prefix}  ${assoc.family} / ${gloss.family}`;
+        case 11:
+          return `${prefix}  ${assoc.extendedImages.join(" ")}`;
+        default:
+          return prefix;
+      }
+    });
+  }
+
+  private renderFooter(frame: CellBuffer, ctx: SceneContext): void {
+    const t = getTheme();
+    const sepRow = ctx.rows - 2;
+    const footerRow = ctx.rows - 1;
+    frame.writeText(sepRow, 0, "─".repeat(ctx.cols), { fg: t.tertiary });
+    frame.writeText(footerRow, 1, "[↑↓] scroll  ·  [esc] back", { fg: t.secondary });
+
+    if (this.contentHeight > this.viewportHeight) {
+      const indicator = `${Math.floor(this.scrollOffset / this.viewportHeight) + 1}/${Math.ceil(this.contentHeight / this.viewportHeight)}`;
+      frame.writeText(footerRow, ctx.cols - indicator.length - 1, indicator, {
+        fg: t.tertiary,
+      });
+    }
+  }
+}
diff --git a/packages/terminal/src/scenes/settings/settings-scene.ts b/packages/terminal/src/scenes/settings/settings-scene.ts
index cd302b9..a56e20d 100644
--- a/packages/terminal/src/scenes/settings/settings-scene.ts
+++ b/packages/terminal/src/scenes/settings/settings-scene.ts
@@ -4,7 +4,7 @@ import type { Scene, SceneContext, SceneSignal } from "../../scene/types.ts";
 import type { CellBuffer } from "../../render/buffer.ts";
 import type { KeyEvent } from "../../input/key-parser.ts";
 import type { GlyphAnimator, GlyphAnimStyle } from "../../glyph-anim/types.ts";
-import type { GlyphFont, GlyphSize } from "@iching/core";
+import type { DisplayLanguage, GlyphFont, GlyphSize } from "@iching/core";
 import type { TaijituStyle } from "../home/taijitu-render.ts";
 import { renderTaijitu } from "../home/taijitu-render.ts";
 import { createGlyphAnimator } from "../../glyph-anim/factory.ts";
@@ -22,6 +22,12 @@ import { LINE_WIDTH } from "../../glyphs.ts";
 
 const ANIM_OPTIONS: GlyphAnimStyle[] = ["dots", "noise", "radial", "sand"];
 const FONT_OPTIONS: GlyphFont[] = ["kaiti", "libian", "heiti"];
+const LANGUAGE_OPTIONS: DisplayLanguage[] = ["zh-Hans", "zh-Hant", "en"];
+const LANGUAGE_LABELS: Record<DisplayLanguage, string> = {
+  "zh-Hans": "简",
+  "zh-Hant": "繁",
+  en: "EN",
+};
 const TAIJITU_OPTIONS: TaijituStyle[] = ["dots", "dense"];
 const CAST_METHOD_OPTIONS = ["coin", "yarrow"] as const;
 const CAST_MODE_OPTIONS = ["auto", "manual"] as const;
@@ -34,6 +40,7 @@ interface SettingRow {
 
 export interface SettingsValues {
   theme: ThemeName;
+  language: DisplayLanguage;
   glyphAnim: GlyphAnimStyle;
   glyphFont: GlyphFont;
   taijituStyle: TaijituStyle;
@@ -94,6 +101,7 @@ export class SettingsScene implements Scene {
     this.values = { ...initial };
     this.rows = [
       { label: "Theme",           options: [...THEME_NAMES],         selected: Math.max(0, THEME_NAMES.indexOf(initial.theme)) },
+      { label: "Language",        options: LANGUAGE_OPTIONS.map((lang) => LANGUAGE_LABELS[lang]), selected: Math.max(0, LANGUAGE_OPTIONS.indexOf(initial.language)) },
       { label: "Taijitu",         options: [...TAIJITU_OPTIONS],     selected: Math.max(0, TAIJITU_OPTIONS.indexOf(initial.taijituStyle)) },
       { label: "Glyph Animation", options: [...ANIM_OPTIONS],        selected: Math.max(0, ANIM_OPTIONS.indexOf(initial.glyphAnim)) },
       { label: "Font",            options: [...FONT_OPTIONS],        selected: Math.max(0, FONT_OPTIONS.indexOf(initial.glyphFont)) },
@@ -106,11 +114,12 @@ export class SettingsScene implements Scene {
   getValues(): SettingsValues {
     return {
       theme: THEME_NAMES[this.rows[0].selected] ?? "bone",
-      taijituStyle: TAIJITU_OPTIONS[this.rows[1].selected] ?? "dots",
-      glyphAnim: ANIM_OPTIONS[this.rows[2].selected] ?? "dots",
-      glyphFont: FONT_OPTIONS[this.rows[3].selected] ?? "kaiti",
-      castMethod: CAST_METHOD_OPTIONS[this.rows[4].selected] ?? "coin",
-      castMode: CAST_MODE_OPTIONS[this.rows[5].selected] ?? "auto",
+      language: LANGUAGE_OPTIONS[this.rows[1].selected] ?? "zh-Hant",
+      taijituStyle: TAIJITU_OPTIONS[this.rows[2].selected] ?? "dots",
+      glyphAnim: ANIM_OPTIONS[this.rows[3].selected] ?? "dots",
+      glyphFont: FONT_OPTIONS[this.rows[4].selected] ?? "kaiti",
+      castMethod: CAST_METHOD_OPTIONS[this.rows[5].selected] ?? "coin",
+      castMode: CAST_MODE_OPTIONS[this.rows[6].selected] ?? "auto",
     };
   }