About Sanya: Sanya, located at the southernmost tip of Hainan Island, is China's only international tropical coastal resort. Sanya Tourism: Sanya is surrounded by mountains in the north and the sea in the south. The mountains, sea and river are naturally integrated. Many hills also provide the commanding heights of the sea, river bay and urban landscape. Sanya has clear water, high visibility and moderate water temperature. It is suitable for swimming all year round. There are two rivers in the east and west passing through the city. The mangroves that grow naturally on both sides of the river are evergreen and full of vitality. They are famous habitats of egrets. Beautiful natural scenery and excellent ecological environment have created a beautiful paradise for people, tourism and vacation in Sanya.