Introduction to Beihai Wetland: Tengchong Beihai Wetland Reserve is located northwest of the county, 12.5 kilometers away from the city. It is one of the first 33 national key wetlands announced by the country in December 1994, and is also the only national wetland in Yunnan Province. Wetland protected area. The protected area covers an area of 162,900 square kilometers and the North Sea covers an area of 0.46 square kilometers.