You mean the lounge (area) behind the second floor of the library, right? It costs a little to contract that place to a private person, but fortunately, things are very cheap, so I need two bottles of water.

This is a locker. It's on the second floor of the library, on the eighth and ninth floors. Take the student ID card to the reader service center on the right of the second floor of the library. 20 yuan/locker every semester, you should choose the locker in advance, remember the number, and then handle it in the past. When you're done, buy a lock and lock it.