Aerial photo taken on Nov. 30, 2016 shows the Songgang wharf of Danjiangkou Reservoir in Xichuan County, central China's Henan Province. The central route of China's south-to-north water diversion project has supplied water to about 42 million people since December of 2014. A total of 6.09 billion cubic meters of water has been delivered to Beijing and Tianjin municipalities and the provinces of Hebei and Henan. (Photo/Xinhua)
