Highlights: Caohai Lake is located beside Weining County, about 2,000 meters above sea level. It is one of the three highland freshwater lakes in China. Its perennial water surface is as large as five of Hangzhou’s West Lakes. There are also more than 120 aquatic plants growing on the lake bed underneath, which provides sufficient food for more than forty species of fish. A large number of fish, shrimp, clams, snails and plankton provide plenty of food for more than 180 species of birds living here.