Shanghai Puyuan School has adopted a closed management mode. During the period of closed management, universities are not allowed to carry out cross-campus exchanges and gathering activities, the school is strictly school gate management, entering the school personnel must be submitted to Shanghai within 48 hours of the 2 times the nucleic acid test negative report (interval of 24 hours), strict verification of identity, testing body temperature, check the health code and trip code. Personnel leaving the school must leave the school in accordance with the application. The movement of people on campus should be staggered by area, level, time and peak to avoid gathering of people. Teachers, students and staff are required to undergo a weekly nucleic acid test.