diff --git a/src/chat/planner_actions/planner.py b/src/chat/planner_actions/planner.py
index e8ff72468..a1deb5698 100644
--- a/src/chat/planner_actions/planner.py
+++ b/src/chat/planner_actions/planner.py
@@ -35,7 +35,6 @@ def init_prompt():
 {mood_block}
 {time_block}
 {identity_block}
-你的核心任务是智能判断消息是否真正需要你的回应，避免强行插话或无意义的参与。只有当消息确实针对你或你能提供有价值的回应时才参与对话。
 
 {custom_prompt_block}
 {chat_context_description}，以下是具体的聊天内容
@@ -295,7 +294,7 @@ class ActionPlanner:
 
             chat_content_block, message_id_list = build_readable_messages_with_id(
                 messages=message_list_before_now,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 read_mark=self.last_obs_time_mark,
                 truncate=True,
                 show_actions=True,
diff --git a/src/chat/replyer/default_generator.py b/src/chat/replyer/default_generator.py
index 6104f8437..7c410ae74 100644
--- a/src/chat/replyer/default_generator.py
+++ b/src/chat/replyer/default_generator.py
@@ -598,7 +598,7 @@ class DefaultReplyer:
             all_dialogue_prompt_str = build_readable_messages(
                 latest_25_msgs,
                 replace_bot_name=True,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 truncate=True,
             )
             all_dialogue_prompt = f"所有用户的发言：\n{all_dialogue_prompt_str}"
@@ -606,33 +606,18 @@ class DefaultReplyer:
         # 构建核心对话 prompt
         core_dialogue_prompt = ""
         if core_dialogue_list:
-            # 检查最新五条消息中是否包含bot自己说的消息
-            latest_5_messages = core_dialogue_list[-5:] if len(core_dialogue_list) >= 5 else core_dialogue_list
-            has_bot_message = any(str(msg.get("user_id")) == bot_id for msg in latest_5_messages)
-            
-            # logger.info(f"最新五条消息：{latest_5_messages}")
-            # logger.info(f"最新五条消息中是否包含bot自己说的消息：{has_bot_message}")
-            
-            # 如果最新五条消息中不包含bot的消息，则返回空字符串
-            if not has_bot_message:
-                core_dialogue_prompt = ""
-            else:
-                core_dialogue_list = core_dialogue_list[-int(global_config.chat.max_context_size * 0.6) :]  # 限制消息数量
-                
-                core_dialogue_prompt_str = build_readable_messages(
-                    core_dialogue_list,
-                    replace_bot_name=True,
-                    merge_messages=False,
-                    timestamp_mode="normal_no_YMD",
-                    read_mark=0.0,
-                    truncate=True,
-                    show_actions=True,
-                )
-                core_dialogue_prompt = f"""--------------------------------
-这是你和{sender}的对话，你们正在交流中：
-{core_dialogue_prompt_str}
---------------------------------
-"""
+            core_dialogue_list = core_dialogue_list[-int(global_config.chat.max_context_size * 2) :]  # 限制消息数量
+
+            core_dialogue_prompt_str = build_readable_messages(
+                core_dialogue_list,
+                replace_bot_name=True,
+                merge_messages=False,
+                timestamp_mode="normal",
+                read_mark=0.0,
+                truncate=True,
+                show_actions=True,
+            )
+            core_dialogue_prompt = core_dialogue_prompt_str
 
         return core_dialogue_prompt, all_dialogue_prompt
 
@@ -897,7 +882,7 @@ class DefaultReplyer:
                 unified_message_list,
                 replace_bot_name=True,
                 merge_messages=False,
-                timestamp_mode="normal_no_YMD",
+                timestamp_mode="normal",
                 read_mark=0.0,
                 truncate=True,
                 show_actions=True,
diff --git a/src/config/official_configs.py b/src/config/official_configs.py
index 0b7122f6c..aa0d33da5 100644
--- a/src/config/official_configs.py
+++ b/src/config/official_configs.py
@@ -220,6 +220,14 @@ class ChatConfig(ConfigBase):
     
     planner_custom_prompt_content: str = ""
     """决策器自定义提示词内容，仅在planner_custom_prompt_enable为True时生效"""
+    
+    timestamp_display_mode: Literal["normal", "normal_no_YMD", "relative"] = "normal_no_YMD"
+    """
+    消息时间戳显示模式：
+    - normal: 完整日期时间格式 (YYYY-MM-DD HH:MM:SS)
+    - normal_no_YMD: 仅显示时间 (HH:MM:SS)
+    - relative: 相对时间格式 (几分钟前/几小时前等)
+    """
 
     def get_current_talk_frequency(self, chat_stream_id: Optional[str] = None) -> float:
         """