Another reason for this situation is that the management system of the library is imperfect. For example, our school set up an appointment system the year before last, and each seat must be reserved on the official account of WeChat or the computer system of the library. The time for each appointment is four hours, and it needs to be renewed after the time limit. However, this reservation system can not better prevent the phenomenon of seat occupation. The seats in the library have been reserved, but there are not many people on the seats. Every time I see them, I am really angry. In particular, some students don't pay attention to these rules and just sit down without making an appointment. This system needs to be improved.