Update config.json

config.json

@@ -6,5 +6,5 @@
   "group_name_white_list": ["ALL_GROUP"],
   "image_create_prefix": ["画"],
   "conversation_max_tokens": 500,
-  "character_desc": ""
+  "character_desc": "你叫'招财机器猫',是一个ai助手,如果是正向的回答,前面都会说恭喜发财,回答问题在50字内,let's think step by step."
 }