The former site of Sun Yat-sen University is not allowed to enter or leave at will. The South Campus and East Campus of Sun Yat-sen University issued an "exorbitant order", requiring that in principle, no one can enter except teachers, students, alumni and staff. And you must carry valid certificates such as ID card, student ID card and all-in-one card. The security department of Sun Yat-sen University said that the "purchase restriction order" explicitly prohibits "tourists" from entering, that is to say, people who enter the campus for walking and sightseeing are prohibited from entering in the future.