Tourists appreciate the torrents gushing out from the Xiaolangdi Reservoir on the Yellow River, at the reservoir's viewing platform, in Jiyuan, central China's Henan Province, June 21, 2011. The Yellow River Flood Control and Drought Relief Headquarters launched on Sunday a 20-day operation to discharge water from three reservoirs, namely Wanjiazhai, Sanmenxia and Xiaolangdi, in a bid to clear up the sediment in the river. [Xinhua/Miao Qiunao]