Northwest University's study room is also free in summer, so the facilities are normal, so forget about wifi. What do you need wifi for self-study? Most university libraries can't get in without campus cards. Basically, many of them are rented in the university town in summer, and there are supporting facilities around them, so they go to Northwest University for self-study.

As for whether other colleges and universities nearby can open, they were closed before, and it is not clear now. Just ask any classmate.