You can't. According to relevant information, tourists are not allowed to set up tents on the beach for the night in Beihai Silver Beach. In order to protect the local environment and ensure the safety and order of tourists, the tourism department stipulates that camping on the beach is not allowed, but you can choose to stay in local hotels, homestays and other accommodation facilities, and you are not allowed to engage in some illegal acts on the beach, such as alcoholism, drug abuse, disturbing the people, barbecue and so on.