changjianglizuzizhixianIntroduction：Introduction to Changjiang: The hometown of Chinese mango - Changjiang Li Autonomous County is located in the northwest of Hainan, facing the mountains and the sea. The county people's government is located in Shilu Town, 196 kilometers away from Haikou City, the provincial capital, 100 kilometers away from Yangpu Development Zone, 220 kilometers away from Sanya and 50 kilometers away from Bada Port. The county has a wide range of kilometers, the Haishu West Line Highway, the Huandao Expressway and the Yuehai Railway run through the whole territory, and the infrastructures such as water conservancy, electric power and communication are perfect. Changjiang is a typical tropical monsoon climate zone with an average annual temperature of 24.3 °C. There is no winter in the whole year. The seasons are like spring, the sunshine is sufficient, the annual average precipitation is 1676 mm, the ecological environment is good, the land is fertile, the water source is sufficient, and the famous fruit is developed. Tropical high-efficiency agriculture such as anti-season melons and vegetables has unique conditions.