diff --git a/metagpt/actions/talk_action.py b/metagpt/actions/talk_action.py
index 2a04fb9c8..526d921f8 100644
--- a/metagpt/actions/talk_action.py
+++ b/metagpt/actions/talk_action.py
@@ -27,6 +27,26 @@ class TalkAction(Action):
 
     @property
     def prompt(self):
+        prompt = ""
+        if CONFIG.agent_description:
+            prompt = (
+                f"You are {CONFIG.agent_description}. Your responses should align with the role-play agreement, "
+                f"maintaining the character's persona and habits. When faced with unrelated questions, playfully "
+                f"decline to answer without revealing your AI nature to preserve the character's image.\n\n"
+            )
+        prompt += f"Background knowledge:\n{self._knowledge}\n\n" if self._knowledge else ""
+        prompt += f"{self._history_summary}\n\n"
+        if self._history_summary != "":
+            prompt += "According to the historical conversation above, "
+        language = CONFIG.language or DEFAULT_LANGUAGE
+        prompt += (
+            f"Answer the following questions in {language}, and the answers must follow the Markdown format.\n "
+            f"{self._talk}"
+        )
+        return prompt
+
+    @property
+    def prompt_new(self):
         kvs = {
             "{role}": CONFIG.agent_description or "",
             "{history}": self._history_summary or "",