Contact relevant departments of Sun Yat-sen University in advance to provide the identity information of visitors. Visitors who want to visit Sun Yat-sen University can contact the relevant departments of Sun Yat-sen University in advance, such as the Youth League Committee and the Foreign Exchange Office of Sun Yat-sen University, explain the purpose and number of visitors, provide the identity information of the visitors, such as their names and ID numbers, and prepare relevant documents, such as ID cards and visitor cards. After being approved by the relevant departments of Sun Yat-sen University, they will go to Sun Yat-sen University at the designated time and place.