Sanya, Hainan Province, is located in a tropical maritime monsoon climate zone, with abundant rainfall and good overall permeability.
With the rapid expansion of the city and relatively extensive management, Sanya’s urban ecology has been severely damaged, and many problems such as poor urban drainage, water logging during typhoon season, and deterioration of the water environment have gradually emerged, affecting Sanya’s image as an excellent tourist city.
Sanya City takes the improvement of the ecological environment as a goal. After more than three years of sponge pilot construction, the quality of the water environment has been greatly improved, and the city’s ability to deal with typhoon and heavy rainfall has been significantly enhanced.