Sanya is a prefecture level city under the jurisdiction of Hainan. It is located at the southernmost end of Hainan Island, an international tourist city featuring tropical seaside scenery. China's seaside city is one of the best air quality cities in China and the most long-lived area in the country. It is called "Hawaii of the East", and Sanya is also a beloved city. There is the limpid sea water and the most beautiful beach in China.