Dianchi Lake in Kunming was formed by tectonic collapse and is a tectonic lake.
There are two theories for the formation of Tianchi in Tianshan, Xinjiang: ancient ice erosion-terminal barrier lake and landslide and landslide barrier lake. No matter which type, it is a barrier lake.
Crescent Lake in Dunhuang, Gansu Province, is a typical wind-eroded lake. It is a lake formed by wind erosion of the depressions between dunes to the water surface, and is recharged by groundwater. Therefore, there is water in all seasons, and the water volume does not change much. The lake It is in the shape of a long and narrow crescent from north to south, about 100 meters long and 30 meters wide, hence the name Crescent Lake.