08: 00 to 1 1: 00, 14: 00 to 17: 00, 18: 00-2 1: 00. According to the announcement issued by the Academic Affairs Office of Tianjin Urban Construction University, the opening hours are: 08: 00-11:00 every day; 14:00- 17:00; 18:00-2 1:00。 Opening place: the classrooms on the first floor of the west and east facilities (10 1- 106 classrooms) are opened in advance, and the use is adjusted according to the number of self-learners. Open on demand. On the premise of meeting the requirements of prevention and control, try to save the cost of epidemic prevention and adjust the number of study rooms as needed.