diff --git a/nanobot/channels/feishu.py b/nanobot/channels/feishu.py
index 4abac85..161d31e 100644
--- a/nanobot/channels/feishu.py
+++ b/nanobot/channels/feishu.py
@@ -325,7 +325,13 @@ class FeishuChannel(BaseChannel):
             await asyncio.sleep(1)
     
     async def stop(self) -> None:
-        """Stop the Feishu bot."""
+        """
+        Stop the Feishu bot.
+
+        Notice: lark.ws.Client does not expose stop method， simply exiting the program will close the client.
+
+        Reference: https://github.com/larksuite/oapi-sdk-python/blob/v2_main/lark_oapi/ws/client.py#L86
+        """
         self._running = False
         logger.info("Feishu bot stopped")