Recently, Tsinghua University, Peking University and other universities announced the restoration of alumni access rights, and some universities also allowed parents and off-campus personnel to apply for admission. After the implementation of "Class B and Class B management", what changes have taken place in the opening rules of universities? Can off-campus personnel still access the campus? To restore the access rights of alumni, parents can also visit the university. At present, Tsinghua University, Peking University, Renmin University of China, Beijing University of Science and Technology, Wuhan University, Harbin University of Engineering and other universities have successively issued notices: in combination with the adjustment of epidemic prevention and control policies and the actual situation of the campus, the university has restored the access rights of alumni to the campus headquarters without reservation. University alumni can enter the university on foot after showing their electronic alumni card, physical alumni card or valid ID card and being verified by the staff. Alumni without relevant certificates can apply for admission through the appointment process of the school unit. For parents and off-campus personnel, Southeast University specially stipulates that parents and other off-campus personnel who need to enter the school can apply on the antenna one day in advance, and obtain the approval of the person in charge of the relevant unit in the school. After the approval, the school code can be generated before entering the school. When leaving the school, the code scanning registration should be done. In addition, the Chinese University of Hong Kong (Shenzhen) recently issued a notice to cancel the application and approval system for admission of persons outside the white list and restore the pre-epidemic admission mode: visitors on weekdays can apply for admission in the official small procedures, fill in the visited department, the visited person and the reason for coming to the school; Visitors can enter the school after showing valid certificates and registering. The university is open to the public on weekends and legal holidays. During the opening of the campus, visitors must register at the gate with their valid certificates and accept the inspection of the security personnel. Xiao Liu, a sophomore student at the Chinese University of Hong Kong (Shenzhen), expressed great support for this. University campuses are very popular, but there are also coordination problems. University campuses have always been one of the favorite places for tourists outside the campus. Especially in the special periods such as the flower season, major universities have ushered in the peak period of tourists, and the coordination problem between campus and off-campus personnel has also become prominent. The reporter learned that when colleges and universities were opened to the public, it was stipulated that the student dormitory area, the family area of faculty and staff and the concentrated area of teaching and scientific research sites were non-open areas, and the library and gymnasium could be accessed. At present, although many colleges and universities have successively restored the access rights of alumni, they have not yet been fully open to the society. The staff of the Security Department of Wuhan University told China News Service that the school is not open to ordinary tourists at present. The visiting relatives and friends of the campus staff and students can contact the campus staff to enter the campus. Cui Lei, a 24-year-old undergraduate student at Wuhan University, told chinanews. com that Wuhan University had no access control before 2020 and could enter and leave freely. "Before Wuhan University, there was a real university without walls. At the front door was an open memorial archway. The school is located near the commercial street, and tourists often come to visit it." Every March is the season of cherry blossom in Wuhan, and it is also the time of the most tourists on campus. Cui Lei said that during this period, tourists who came to take pictures of Wuhan University were often seen. While the school was appreciated and recognized by everyone, there were also some problems. On campus, there is a famous Cherry Blossom Avenue from the student dormitory to the teaching building