diff --git a/src/plugins/PFC/chat_observer.py b/src/plugins/PFC/chat_observer.py
index 3576397d5..e66824a28 100644
--- a/src/plugins/PFC/chat_observer.py
+++ b/src/plugins/PFC/chat_observer.py
@@ -123,7 +123,11 @@ class ChatObserver:
         self.last_cold_chat_check = current_time
 
         # 判断是否冷场
-        is_cold = True if self.last_message_time is None else (current_time - self.last_message_time) > self.cold_chat_threshold
+        is_cold = (
+            True
+            if self.last_message_time is None
+            else (current_time - self.last_message_time) > self.cold_chat_threshold
+        )
 
         # 如果冷场状态发生变化，发送通知
         if is_cold != self.is_cold_chat_state: