Traveling to Hainan, I came to Sanya, strolling around the city center at night, seeing a river, and asking the locals that it is called "Sanya River." The Sanya River is located in the south of Sanya City, composed of three rivers of Liuluoshui, Shuiyuxi and Banling Water, with Liuluoshui as the mainstream, three rivers converging, injecting Sanya Port into the sea. The reason why it is called the Sanya River is because it is divided into the East River and the West River when it is close to the sea entrance, and the shape of the sea is "sloping", and the Sanya River is also the most closely related "mother river" in Sanya city life.