The old campus of Chongqing University is open to citizens and tourists on weekends. They can visit the campus. However, private vehicles can't directly enter the old campus of Chongqing University, so they need to choose other modes of transportation to arrive on weekends and abide by the parking regulations. When entering the campus, you should keep civilized behavior, abide by the relevant order requirements, do not litter, and do not destroy public facilities at will.