If it's self-study, that is, going to the study room, you can do it at eight in the morning and close at ten in the evening. If you want to go to the borrowing room, you'd better go after nine o'clock in the morning. The borrowing room on the third floor is open until 9: 30 pm, and other borrowing rooms are closed at 5 pm. Note: the borrowing time is 9:00- 1 1:30, and in the afternoon 1:30-4:30 (senior bubble librarian of polytechnic university).