async def command(chat_attrs: ChatAttribute, args: List):
            if not args:
                await quick_reply(chat_attrs, 'Empty keyword list')
                return False

            old_keywords = set(self.config.Keyword)
            new_keywords = set(args)

            exists_keywords = old_keywords & new_keywords
            added_keywords = new_keywords - exists_keywords
            if added_keywords:
                self.config.Keyword = list(old_keywords | new_keywords)
                UMRConfig.save_config()
                if exists_keywords:
                    await quick_reply(
                        chat_attrs,
                        f'Success, added keywords: {", ".join(added_keywords)}\n'
                        f'exists keywords: {", ".join(exists_keywords)}')
                await quick_reply(
                    chat_attrs,
                    f'Success, added keywords: {", ".join(added_keywords)}')
            else:
                await quick_reply(
                    chat_attrs,
                    f'All keyword exists: {", ".join(exists_keywords)}')
 async def command(chat_attrs: ChatAttribute, args: List):
     if not chat_attrs.reply_to:
         await quick_reply(
             chat_attrs,
             'Message not specified, please reply to a message')
         return False
     reply_chat_attrs = chat_attrs.reply_to
     if not reply_chat_attrs.forward_from:  # definitely not a channel
         await quick_reply(chat_attrs, 'Message is not a forward')
         return False
     if reply_chat_attrs.forward_from.chat_id >= 0:
         await quick_reply(chat_attrs, 'Message is not from channel')
         return False
     channel_id = reply_chat_attrs.forward_from.chat_id
     if channel_id in self.config.ChatID:
         await quick_reply(chat_attrs, 'Channel already exists')
     else:
         self.config.ChatID.append(
             reply_chat_attrs.forward_from.chat_id)
         UMRConfig.save_config()
         await quick_reply(
             chat_attrs,
             f'Success, added channel {reply_chat_attrs.forward_from.name}'
         )