University libraries are used for self-study. I think it's because after going to college, people may lose their yearning and expectation for teachers and will not choose classrooms for self-study after class. Naturally, when they need a very quiet environment to study, they will definitely choose the library first. And you will find that because there are a large number of books in the library, no matter what kind of knowledge problems you encounter in the learning process, you can find relevant books in time, which is convenient and fast.