Staff members work on a tributary of the Yangtze River in Dianjiang County, southwest China's Chongqing, July 25, 2020. In recent years, Chongqing has continuously built up important ecological barriers in the upper reaches of the Yangtze River by strengthening ecological restoration. The ecological environment in the Chongqing section of the Yangtze River has been continuously improved. (Xinhua/Wang Quanchao)
