Are the security guards at Xiamen University on duty 24 hours a day?

Does the questioner want to ask "Are the security guards at the entrance of Xiamen University on duty 24 hours a day?" Yes. The security forces of Xiamen University are on duty 24 hours a day. They are responsible for maintaining public security and order inside and outside the campus, and inspecting and managing people and vehicles entering and exiting the campus. Security booths and guard rooms will be set up at the school gate and main entrances and exits. Security personnel will constantly patrol and monitor to ensure the safety of the campus. In addition, Xiamen University is also equipped with professional firefighting, security, medical and other rescue forces to respond to emergencies. Therefore, whenever you enter or leave the Xiamen University campus, you can feel the presence and service of security personnel.