diff --git a/gsuid_core/bot.py b/gsuid_core/bot.py
index f756a80..ee083df 100644
--- a/gsuid_core/bot.py
+++ b/gsuid_core/bot.py
@@ -25,8 +25,9 @@ class _Bot:
         target_id: Optional[str],
         bot_id: str,
         bot_self_id: str,
-        msg_id: str,
+        msg_id: str = '',
         at_sender: bool = False,
+        sender_id: str = '',
     ):
         if isinstance(message, Message):
             message = [message]
@@ -38,8 +39,8 @@ class _Bot:
         elif isinstance(message, bytes):
             message = [MessageSegment.image(message)]
 
-        if at_sender and target_id:
-            message.append(MessageSegment.at(target_id))
+        if at_sender and sender_id:
+            message.append(MessageSegment.at(sender_id))
 
         send = MessageSend(
             content=message,
@@ -84,6 +85,7 @@ class Bot:
             self.bot_self_id,
             self.ev.msg_id,
             at_sender,
+            self.ev.user_id,
         )
 
     async def target_send(
@@ -92,6 +94,7 @@ class Bot:
         target_type: Literal['group', 'direct', 'channel', 'sub_channel'],
         target_id: Optional[str],
         at_sender: bool = False,
+        sender_id: str = '',
     ):
         return await self.bot.target_send(
             message,
@@ -101,4 +104,5 @@ class Bot:
             self.ev.bot_self_id,
             self.ev.msg_id,
             at_sender,
+            sender_id,
         )
diff --git a/gsuid_core/segment.py b/gsuid_core/segment.py
index e067180..82adea2 100644
--- a/gsuid_core/segment.py
+++ b/gsuid_core/segment.py
@@ -58,8 +58,18 @@ class MessageSegment:
         return Message(type='node', data=msg_list)
 
     @staticmethod
-    def record(content: str) -> Message:
-        return Message(type='record', data=content)
+    def record(content: Union[str, bytes, Path]) -> Message:
+        if isinstance(content, bytes):
+            pass
+        elif isinstance(content, Path):
+            with open(str(content), 'rb') as fp:
+                content = fp.read()
+        else:
+            if content.startswith('base64://'):
+                return Message(type='image', data=content)
+            with open(content, 'rb') as fp:
+                content = fp.read()
+        return Message(type='record', data=f'base64://{content}')
 
     @staticmethod
     def file(content: Union[Path, str, bytes], file_name: str) -> Message: