Generally, it depends on whether it is really unbearable. If you really can't stand it, change your dormitory or go out and share it with others. If you don't think it gets in your way. Just show your attitude. I just don't like his lack of quality. But don't expect the other person to change just because you said a word or two. That's almost impossible. Everyone's behavior pattern, as long as it is not painful for them, is hardly aware of the need to change.