You can spend the night outside, but every time you spend the night outside, there will be files in the school dormitory. Of course, if your school dormitory is not equipped with electronic access control system, forget it. Generally speaking, however, staying out at night is not allowed, especially in recent years, when the epidemic situation is particularly serious, universities have become more strict with students. If it's only one or two special circumstances, it's ok, but if it's too many times, the school system will find your problems, from talking and asking, to recording a record and expelling you from school. It will greatly affect your future joining the party and work. Therefore, under normal circumstances, it is better not to go home.