An aerial picture shows the Chagan Lake ecological waterfront project in Songyuan city, Northeast China's Jilin province. Chagan Lake is one of the 10 biggest freshwater lakes in China. In recent years, the ecological environment of the lake has been enhanced with the implementation of water quality improvement projects. The lake has now started developing into a national 5A scenic spot. [Photo/cnjiwang.com]

A flock of black swans are photographed on Chagan Lake in Jilin province. In the first half of 2020, Chagan Lake implemented 11 water quality improvement projects, including those for ecological restoration and water treatment, adjustments to the plant life around the lake, and wetland vegetation restoration. [Photo/cnjiwang.com]

Wild geese settle on Chagan Lake. Following the environmental improvements made to the lake, it has become a new habitat for birds. [Photo/cnjiwang.com]

An aerial photo of an ecological waterfront project under construction along the banks of Chagan Lake [Photo/cnjiwang.com]