diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0efd7e8..e39bd53 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -43,6 +43,7 @@ jobs:
           COZE_JWT_AUTH_CLIENT_ID: ${{ secrets.COZE_JWT_AUTH_CLIENT_ID }}
           COZE_JWT_AUTH_PRIVATE_KEY: ${{ secrets.COZE_JWT_AUTH_PRIVATE_KEY }}
           COZE_JWT_AUTH_KEY_ID: ${{ secrets.COZE_JWT_AUTH_KEY_ID }}
+          COZE_BOT_ID_TRANSLATE: ${{ secrets.COZE_BOT_ID_TRANSLATE }}
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
 
diff --git a/cozepy/chat.py b/cozepy/chat.py
index 702df21..085f308 100644
--- a/cozepy/chat.py
+++ b/cozepy/chat.py
@@ -1,6 +1,6 @@
 import json
 from enum import Enum
-from typing import Dict, List, Iterator, Tuple
+from typing import Dict, List, Iterator, Tuple, Union
 
 from .auth import Auth
 from .model import Message, Chat, MessageResponse, CozeModel
@@ -118,7 +118,7 @@ def chat_v3(
         auto_save_history: bool = True,
         meta_data: Dict[str, str] = None,
         conversation_id: str = None,
-    ) -> Tuple[Chat, ChatIterator]:
+    ) -> Union[Chat, ChatIterator]:
         """
         Create a conversation.
         Conversation is an interaction between a bot and a user, including one or more messages.
diff --git a/cozepy/request.py b/cozepy/request.py
index 87ceabe..eedad80 100644
--- a/cozepy/request.py
+++ b/cozepy/request.py
@@ -1,4 +1,4 @@
-from typing import TYPE_CHECKING, Tuple, Optional, Iterator
+from typing import TYPE_CHECKING, Tuple, Optional, Iterator, Union
 
 import requests
 from requests import Response
@@ -37,7 +37,7 @@ def request(
         headers: dict = None,
         body: dict = None,
         stream: bool = False,
-    ) -> Tuple[T, Iterator[bytes]]:
+    ) -> Union[T, Iterator[bytes]]:
         """
         Send a request to the server.
         """
diff --git a/tests/test_chat.py b/tests/test_chat.py
new file mode 100644
index 0000000..9227d25
--- /dev/null
+++ b/tests/test_chat.py
@@ -0,0 +1,41 @@
+import os
+
+from cozepy import TokenAuth, Coze, COZE_CN_BASE_URL, Message, ChatIterator, Event
+from cozepy.auth import _random_hex
+
+
+def test_chat_v3_not_stream():
+    token = os.getenv("COZE_TOKEN").strip()
+    bot_id = os.getenv("COZE_BOT_ID_TRANSLATE").strip()
+
+    auth = TokenAuth(token)
+    cli = Coze(auth=auth, base_url=COZE_CN_BASE_URL)
+
+    chat = cli.chat.chat_v3(
+        bot_id=bot_id,
+        user_id=_random_hex(10),
+        additional_messages=[Message.user_text_message("Hi, how are you?")],
+        stream=False,
+    )
+    assert chat is not None
+    assert chat.id != ""
+
+
+def test_chat_v3_stream():
+    token = os.getenv("COZE_TOKEN").strip()
+    bot_id = os.getenv("COZE_BOT_ID_TRANSLATE").strip()
+
+    auth = TokenAuth(token)
+    cli = Coze(auth=auth, base_url=COZE_CN_BASE_URL)
+
+    chat_iter: ChatIterator = cli.chat.chat_v3(
+        bot_id=bot_id,
+        user_id=_random_hex(10),
+        additional_messages=[Message.user_text_message("Hi, how are you?")],
+        stream=True,
+    )
+    for item in chat_iter:
+        assert item is not None
+        assert item.event != ""
+        if item.event == Event.conversation_message_delta:
+            assert item.message.content != ""