Dongzhai Port mangrove forest is the most important green landscape and ecological protection barrier in Haikou, growing China's largest area, the most complete variety, the most complete preservation of mangrove forest, known as "Haikou's kidney". Many tourists choose to visit the mangrove forest in Dongzhai Port Nature Reserve, take a cruise or walk on the plank road, observe the mangrove ecosystem and plants up close, and experience the unique mangrove ecological landscape.