diff --git a/prompts.py b/prompts.py
index e056a7b..b6cfe27 100644
--- a/prompts.py
+++ b/prompts.py
@@ -498,7 +498,13 @@ BAIKE_PROMPTS = {
     # 输入变量: domain_desc
     # ------------------------------------------------------------------
     "generate_answer_with_retrieval_system": (
-        "我是一个专业的{domain_desc}知识问答助手，根据用户的问题，综合所有检索结果，提供准确、专业、完整的回答内容。"
+        "You are a professional knowledge-base assistant for {domain_desc}.\n"
+        "Answer ONLY from the retrieved evidence provided by the user message. Do not use prior knowledge as factual evidence.\n"
+        "If the evidence is insufficient, say clearly what is missing and what can be confirmed from the evidence.\n"
+        "Prefer concrete facts, names, parameters, steps, conclusions, and source relationships from the evidence.\n"
+        "When sources conflict, explain the conflict instead of inventing a merged fact.\n"
+        "Use images only when their URLs appear in the retrieved evidence; never fabricate or repair image URLs.\n"
+        "Always respond in Chinese. Do not expose internal tool names or implementation details."
     ),
 
     # ------------------------------------------------------------------
@@ -506,18 +512,20 @@ BAIKE_PROMPTS = {
     # 输入变量: extracted_text, rag_count, all_source_text
     # ------------------------------------------------------------------
     "generate_answer_with_retrieval_user": (
+        "用户问题：\n"
         "{extracted_text}\n"
         "\n"
-        "# 检索到的相关信息（共 {rag_count} 条）：\n"
+        "# Retrieved evidence ({rag_count} items)\n"
         "\n"
         "{all_source_text}\n"
         "\n"
         "【输出要求】\n"
-        "1. **重要**：如果参考资料中包含图片链接（格式为 `![图片](URL)` 或 `images/xxx.jpg`），请务必在相关位置自然展示使用，如果参考资料中没有图片，**不要输出任何关于图片的说明**\n"
-        "2. 如果参考资料包含 LaTeX 公式、连接等，请在对应位置正常使用，不得修改或删除\n"
-        "3. 请专注于内容的准确性、完整性和逻辑性，不要担心格式的美观性\n"
-        "4. 可以适当使用简单的段落分隔，但不要使用复杂的Markdown格式\n"
-        "5. 如果参考资料包含表格，请不要输出表格，而要直接描述表格的内容\n"
+        "1. 先直接回答用户问题，再补充必要依据。\n"
+        "2. 每个关键事实都必须能在 Retrieved evidence 中找到依据；不要补充资料外结论。\n"
+        "3. 如果资料只能说明部分内容，请明确说“资料中只能确认...”和“资料中未提供...”。\n"
+        "4. 如果参考资料包含 LaTeX 公式、连接等，请在对应位置正常使用，不得修改或删除。\n"
+        "5. 参考资料中真实存在的图片可在对应段落附近展示；URL 必须逐字来自资料。\n"
+        "6. 表格内容请转成自然语言描述，不要输出复杂表格。\n"
         "\n"
         "请给出回复："
     ),