Because domestic users use the unity.cn database to log in to unity hub, they need to open the official website of unity.cn in the browser that pops up when logging in to unity hub, log out of the original account, log in to another account, and then run unity hub login.
I have to complain about the unity hub login system. It is too poorly done. It is a bit similar to QQ login, but it is only half done. After QQ login, 2 accounts will be displayed on the page for you to choose, but it does not. You need to log in manually. Then run one-click login, and sometimes it takes up a certain amount of resources.