Why is QQ offline or online (mobile phone has been logged off or online)?

Ru Ru: 1: This is Super QQ. In fact, although she is not online, you can send her a message or convert it into a mobile message through the server.

2. It's the problem of QQ server, or it may be the programming problem of QQ program itself, not your business. I can't help it Your own QQ is offline. It will take several minutes or even ten or twenty minutes to display your offline status on the server.