Lock the door at 23: 30. According to relevant public information, student dormitories (apartments) open at 6 am every day and lock at 23: 30 pm (9: 30 pm every winter and summer vacation). The power supply time of college students' dormitory is from 6: 00 to 24: 00 every day from Monday to Friday, and from 0: 00 to 24: 00 every day on Saturday and Sunday (that is, all-night power supply is implemented on Friday and Saturday, and power supply is from 6: 00 to 24: 00 at other times); The power supply time of postgraduate dormitory is from 0: 00 to 24: 00 every day.