I Have a Wanjie Chat Group

This is the first time for a new writer to write, so please forgive me for any mistakes. Introduction: The protagonist travels to a world where spiritual energy is revived, awakens the chat ** system, and has a brother who controls his sister. Question*: Can anyone explain what this is? This is the first time I encounter this situation. Naruto: I don't know Cang Yue:………… **Master: Calm down, this is a Wanjie Chat**, which allows different people to chat together This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.