There are five islands in the lake, namely, Haixin Hill, Gucha Hill, Bird Island, Haixi Hill, and Sand Island. Of them, the Bird Island is the most famous one. Reputed as a kingdom of birds, the island is 10 m above the lake water, covering an area of 0.11 sq. km. Various kinds of birds roost here, including gull, wild goose, swan, crane, and the rare black neck crane.