diff --git a/.github/workflows/eval-functions.yml b/.github/workflows/eval-functions.yml
index 796b66c..4fe99a2 100644
--- a/.github/workflows/eval-functions.yml
+++ b/.github/workflows/eval-functions.yml
@@ -104,12 +104,12 @@ jobs:
           mkdir -p eval-results
           EVAL_ERRORS=0
 
-          echo "Running explainText evaluation..."
-          genkit eval:flow explainText \
-            --input datasets/explain-chinese.json \
-            --evaluators=custom/chineseTextPresent,custom/validPinyinFormat,custom/outputStructureValid,custom/grammarExplanationQuality \
-            --batchSize 10 \
-            --output eval-results/explain-chinese-results.json || { echo "⚠️ explainText evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
+          # echo "Running explainText evaluation..."
+          # genkit eval:flow explainText \
+          #   --input datasets/explain-chinese.json \
+          #   --evaluators=custom/chineseTextPresent,custom/validPinyinFormat,custom/outputStructureValid,custom/grammarExplanationQuality \
+          #   --batchSize 10 \
+          #   --output eval-results/explain-chinese-results.json || { echo "⚠️ explainText evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
 
           echo "Running explainEnglish evaluation..."
           genkit eval:flow explainEnglish \
@@ -118,26 +118,26 @@ jobs:
             --batchSize 10 \
             --output eval-results/explain-english-results.json || { echo "⚠️ explainEnglish evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
 
-          echo "Running generateChineseSentences evaluation..."
-          genkit eval:flow generateChineseSentences \
-            --input datasets/generate-chinese-sentences.json \
-            --evaluators=custom/chineseTextPresent,custom/validPinyinFormat,custom/outputStructureValid,custom/sentenceGenerationQuality \
-            --batchSize 10 \
-            --output eval-results/generate-sentences-results.json || { echo "⚠️ generateChineseSentences evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
-
-          echo "Running analyzeCollocation evaluation..."
-          genkit eval:flow analyzeCollocation \
-            --input datasets/analyze-collocation.json \
-            --evaluators=custom/chineseTextPresent,custom/englishTranslationPresent,custom/outputStructureValid \
-            --batchSize 10 \
-            --output eval-results/collocation-results.json || { echo "⚠️ analyzeCollocation evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
-
-          echo "Running explainWordInContext evaluation..."
-          genkit eval:flow explainWordInContext \
-            --input datasets/explain-word-in-context.json \
-            --evaluators=custom/chineseTextPresent,custom/englishTranslationPresent,custom/outputStructureValid \
-            --batchSize 10 \
-            --output eval-results/word-context-results.json || { echo "⚠️ explainWordInContext evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
+          # echo "Running generateChineseSentences evaluation..."
+          # genkit eval:flow generateChineseSentences \
+          #   --input datasets/generate-chinese-sentences.json \
+          #   --evaluators=custom/chineseTextPresent,custom/validPinyinFormat,custom/outputStructureValid,custom/sentenceGenerationQuality \
+          #   --batchSize 10 \
+          #   --output eval-results/generate-sentences-results.json || { echo "⚠️ generateChineseSentences evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
+
+          # echo "Running analyzeCollocation evaluation..."
+          # genkit eval:flow analyzeCollocation \
+          #   --input datasets/analyze-collocation.json \
+          #   --evaluators=custom/chineseTextPresent,custom/englishTranslationPresent,custom/outputStructureValid \
+          #   --batchSize 10 \
+          #   --output eval-results/collocation-results.json || { echo "⚠️ analyzeCollocation evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
+
+          # echo "Running explainWordInContext evaluation..."
+          # genkit eval:flow explainWordInContext \
+          #   --input datasets/explain-word-in-context.json \
+          #   --evaluators=custom/chineseTextPresent,custom/englishTranslationPresent,custom/outputStructureValid \
+          #   --batchSize 10 \
+          #   --output eval-results/word-context-results.json || { echo "⚠️ explainWordInContext evaluation had errors"; EVAL_ERRORS=$((EVAL_ERRORS+1)); }
 
           if [ $EVAL_ERRORS -gt 0 ]; then
             echo "⚠️ $EVAL_ERRORS evaluation(s) had errors - check results for details"
diff --git a/functions/prompts/explain-english.prompt b/functions/prompts/explain-english.prompt
index f92836b..6dac2f8 100644
--- a/functions/prompts/explain-english.prompt
+++ b/functions/prompts/explain-english.prompt
@@ -7,7 +7,16 @@ output:
   schema: EnglishExplanationSchema
 ---
 {{role "system"}}
-You are a helpful Chinese teacher for speakers of English who want to learn Chinese. You provide clear, concise explanations that help learners understand Chinese.
+You are an expert Chinese language tutor. You have thoroughly studied the Chinese Grammar Wiki and HSK Standard Course textbooks, and you use their terminology and teaching approaches.
+
+Prioritize accuracy over comprehensiveness — only explain what you are confident about.
+Keep your explanations focused and practical for a language learner.
+
+CRITICAL REQUIREMENTS:
+1. Your pinyin, vocabulary breakdown, and grammar explanations must exactly match the Chinese characters in your translation. Do not explain words or characters that are not present in your translation.
+2. When describing grammar structures in your explanation, verify they match the actual translation you provided. Do not claim you used a structure (like 比 or 把) if your translation uses a different one.
+3. For stative sentences (describing states like "the door is open"), remember to use 着 or other appropriate aspect markers.
+
 {{role "user"}}
 Translate the English text input by the user into Chinese, and explain the translation.