diff --git a/src/Chat.py b/src/Chat.py
index f03a03a..d6f3a13 100644
--- a/src/Chat.py
+++ b/src/Chat.py
@@ -190,25 +190,6 @@ def init_new_chat():
                 use_container_width=True,
                 on_click=init_new_chat,
             )
-        # if new_chat:
-        #     # avoid rerun for new random email,no use clear()
-        #     keys_to_delete = [
-        #         "selected_chat_id",
-        #         "timestamp",
-        #         "first_run",
-        #         "messages",
-        #         "xata_history",
-        #         "uploaded_files",
-        #         "faiss_db",
-        #     ]
-        #     for key in keys_to_delete:
-        #         try:
-        #             del st.session_state[key]
-        #         except:
-        #             pass
-
-        #     del new_chat
-        #     st.rerun()
 
         with col_delete:
 
@@ -234,23 +215,6 @@ def delete_chat():
                 use_container_width=True,
                 on_click=delete_chat,
             )
-        # if delete_chat:
-        #     delete_chat_history(st.session_state["selected_chat_id"])
-        #     # avoid rerun for new random email, no use clear()
-        #     del st.session_state["selected_chat_id"]
-        #     del st.session_state["timestamp"]
-        #     del st.session_state["first_run"]
-        #     del st.session_state["messages"]
-        #     del st.session_state["xata_history"]
-        #     try:
-        #         del st.session_state["uploaded_files"]
-        #     except:
-        #         pass
-        #     try:
-        #         del st.session_state["faiss_db"]
-        #     except:
-        #         pass
-        #     st.rerun()
 
         if "first_run" not in st.session_state:
             timestamp = time.time()
diff --git a/src/utils.py b/src/utils.py
index 30b77e5..b1976a0 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -1360,12 +1360,12 @@ def your_function():
     # to show chat history on ui
     if "messages" not in st.session_state or len(st.session_state["messages"]) == 1:
         if "subscription" in st.session_state:
-            welcome_message = ui.chat_ai_welcome.format(
+            welcome_message_text = ui.chat_ai_welcome.format(
                 username=st.session_state["username"].split("@")[0],
                 subscription=st.session_state["subsription"],
             )
         else:
-            welcome_message = ui.chat_ai_welcome.format(
+            welcome_message_text = ui.chat_ai_welcome.format(
                 username="there", subscription="free"
             )
 
@@ -1373,7 +1373,7 @@ def your_function():
             {
                 "role": "assistant",
                 "avatar": ui.chat_ai_avatar,
-                "content": welcome_message,
+                "content": welcome_message_text,
             }
         ]
 
@@ -1542,14 +1542,24 @@ def initialize_messages(history):
     Exceptions:
         - Exceptions that may propagate from the `convert_history_to_message` function.
     """
-    # 将历史消息转换为消息格式
+    # convert history to message
     messages = [convert_history_to_message(message) for message in history]
 
-    # 在最前面加入欢迎消息
+    if "subscription" in st.session_state:
+        welcome_message_text = ui.chat_ai_welcome.format(
+            username=st.session_state["username"].split("@")[0],
+            subscription=st.session_state["subsription"],
+        )
+    else:
+        welcome_message_text = ui.chat_ai_welcome.format(
+            username="there", subscription="free"
+        )
+
+    # add welcome message
     welcome_message = {
         "role": "assistant",
         "avatar": ui.chat_ai_avatar,
-        "content": ui.chat_ai_welcome,
+        "content": welcome_message_text,
     }
     messages.insert(0, welcome_message)