Will the Tencent server save records during QQ chat?

If the other party is offline, the message you sent will be retained on the server for about a month (it will be deleted by default if it is not online for a long time), and the message will be received when the other party comes online. When both parties are online, the messages sent by both parties are first uploaded to the server for retrieval (such as sensitive words and sentences) and then transmitted to the client. In fact, large files also follow the UDP protocol, but the files will not be retrieved (except for individual suffix names).

That’s basically it