Cleaning up upper reaches of Yangtze River

Aerial photo taken on March 13, 2018 shows the Jinsha River in Tibetan Autonomous Prefecture of Deqen, southwest China's Yunnan Province. To keep Yangtze River clean and beautiful, efforts to restore ecological environment have been taken in the upper reaches of Yangtze River in Yunnan Province in recent years. (Xinhua/Lin Yiguang)