Nianhu Lake of Daqiao Township, Huize County, is a province-level nature reserve dedicated to black-necked cranes. It is 50 km from the county seat of Huize, and is 2,500 meters above sea level, covering a water area of 13.5 sq km. Thanks to the well-preserved wetlands nearby, it has been am ideal winter habitat for migratory birds, especially black-necked cranes