A combination of pictures taken on Sept. 21, 2011 shows the Dujiatai sluice before discharging floodwater (Top) and after the discharge (Bottom) in Xiantao City, central China's Hubei Province. The Dujiatai sluice started discharging floodwater to the downstream of Hanjiang River at noon on Wednesday, a move to deal with the flood caused by the continuous rainfall since Sept. 16. (Xinhua/Hao Tongqian)