Open on weekends. Buildings will be closed in winter and summer vacations. Let no one live. You must submit an application form for staying in school in winter and summer vacation. There are reasonable reasons for you to stay, but it's annoying. The dormitory in the new century has no access control. Both the school and the South District have access control. You will not be able to enter if you leave late. You need a campus card to enter. Different house numbers are not universal. For example, if you live at No.20, your card can be recognized by Gate No.20, but it is invalid for other doors.