Teachers and students must show campus cards or work permits (student cards) when entering the campus; Other people who live on campus, go to school on business, visit relatives and friends must accept the inquiry and registration of school administrators and confirm their identity before entering the school; Off-campus vehicles adopt an appointment system, and all off-campus vehicles that have not made an appointment are refused admission. At the same time, in order to facilitate the control of students entering the three campuses and effectively carry out epidemic prevention and control work, the entrance passage of Ximen Pedestrian, the entrance passage of Nanmen Pedestrian, the exit passage of the North Gate of Jiuli Campus, and the entrance and exit passages of Dongmen and Innovation Building will be closed from now on; Xidamen Pedestrian Exit Passage, Nandamen Pedestrian Exit Passage and Beidamen Pedestrian Entrance Passage remain open; Pedestrian entrances to and from the campus, such as the South Gate Pedestrian Entrance Passage, the West Gate Pedestrian Exit Passage, the North Gate (Wind Tunnel Gate) Pedestrian Exit Passage, and the Hongzhezhai Small Gate, are closed; Dongdaemun Pedestrian Entrance Passage, Nandaemun Pedestrian Exit Passage, Xidaemun Pedestrian Entrance Passage, Beimen Pedestrian Entrance Passage (Wind Tunnel Gate) and Xiermen Pedestrian Exit Passage remain open.