diff --git a/metagpt/environment/mgx/mgx_env.py b/metagpt/environment/mgx/mgx_env.py
index 53690f7d7..9ad8f5e7f 100644
--- a/metagpt/environment/mgx/mgx_env.py
+++ b/metagpt/environment/mgx/mgx_env.py
@@ -8,7 +8,7 @@ from metagpt.actions import (
     WriteTest,
 )
 from metagpt.actions.summarize_code import SummarizeCode
-from metagpt.const import AGENT, IMAGES, TEAMLEADER_NAME
+from metagpt.const import AGENT, IMAGES, MESSAGE_ROUTE_TO_ALL, TEAMLEADER_NAME
 from metagpt.environment.base_env import Environment
 from metagpt.logs import get_human_input
 from metagpt.roles import Architect, ProductManager, ProjectManager, Role
@@ -24,7 +24,12 @@ class MGXEnv(Environment, SerializationMixin):
 
     direct_chat_roles: set[str] = set()  # record direct chat: @role_name
 
+    is_public_chat: bool = True
+
     def _publish_message(self, message: Message, peekable: bool = True) -> bool:
+        if self.is_public_chat:
+            message.send_to.add(MESSAGE_ROUTE_TO_ALL)
+        message = self.move_message_info_to_content(message)
         return super().publish_message(message, peekable)
 
     def publish_message(self, message: Message, user_defined_recipient: str = "", publicer: str = "") -> bool:
@@ -81,9 +86,8 @@ class MGXEnv(Environment, SerializationMixin):
 
         else:
             # every regular message goes through team leader
-            message = self.move_message_info_to_content(message)
             message.send_to.add(tl.name)
-            tl.put_message(message)
+            self._publish_message(message)
 
         self.history.add(message)
 
@@ -122,9 +126,11 @@ class MGXEnv(Environment, SerializationMixin):
         if converted_msg.role not in ["system", "user", "assistant"]:
             converted_msg.role = "assistant"
         sent_from = converted_msg.metadata[AGENT] if AGENT in converted_msg.metadata else converted_msg.sent_from
-        converted_msg.content = (
-            f"[Message] from {sent_from or 'User'} to {converted_msg.send_to}: {converted_msg.content}"
-        )
+        if converted_msg.send_to == {MESSAGE_ROUTE_TO_ALL}:
+            send_to = TEAMLEADER_NAME
+        else:
+            send_to = ", ".join({role for role in converted_msg.send_to if role != MESSAGE_ROUTE_TO_ALL})
+        converted_msg.content = f"[Message] from {sent_from or 'User'} to {send_to}: {converted_msg.content}"
         return converted_msg
 
     def attach_images(self, message: Message) -> Message:
diff --git a/metagpt/roles/di/role_zero.py b/metagpt/roles/di/role_zero.py
index c284db702..7e09481b1 100644
--- a/metagpt/roles/di/role_zero.py
+++ b/metagpt/roles/di/role_zero.py
@@ -93,6 +93,7 @@ class RoleZero(Role):
     experience_retriever: Annotated[ExpRetriever, Field(exclude=True)] = DummyExpRetriever()
 
     # Others
+    observe_all_msg_from_buffer: bool = True
     command_rsp: str = ""  # the raw string containing the commands
     commands: list[dict] = []  # commands to be executed
     memory_k: int = 200  # number of memories (messages) to use as historical context
diff --git a/metagpt/roles/role.py b/metagpt/roles/role.py
index 5d1050464..f2ab60c4d 100644
--- a/metagpt/roles/role.py
+++ b/metagpt/roles/role.py
@@ -154,6 +154,7 @@ class Role(BaseRole, SerializationMixin, ContextMixin, BaseModel):
     # builtin variables
     recovered: bool = False  # to tag if a recovered role
     latest_observed_msg: Optional[Message] = None  # record the latest observed message when interrupted
+    observe_all_msg_from_buffer: bool = False  # whether to save all msgs from buffer to memory for role's awareness
 
     __hash__ = object.__hash__  # support Role as hashable type in `Environment.members`
 
@@ -171,7 +172,7 @@ class Role(BaseRole, SerializationMixin, ContextMixin, BaseModel):
         self._check_actions()
         self.llm.system_prompt = self._get_prefix()
         self.llm.cost_manager = self.context.cost_manager
-        self._watch(kwargs.pop("watch", [UserRequirement]))
+        self._watch(kwargs.pop("watch", []))
 
         if self.latest_observed_msg:
             self.recovered = True
@@ -396,7 +397,12 @@ class Role(BaseRole, SerializationMixin, ContextMixin, BaseModel):
         self.rc.news = [
             n for n in news if (n.cause_by in self.rc.watch or self.name in n.send_to) and n not in old_messages
         ]
-        self.rc.memory.add_batch(self.rc.news)  # only save messages of interest into memory
+        if self.observe_all_msg_from_buffer:
+            # save all new messages from the buffer into memory, the role may not react to them but can be aware of them
+            self.rc.memory.add_batch(news)
+        else:
+            # only save messages of interest into memory
+            self.rc.memory.add_batch(self.rc.news)
         self.latest_observed_msg = self.rc.news[-1] if self.rc.news else None  # record the latest observed msg
 
         # Design Rules: