(Beijing, March 21) On the fourth day of the "Good Luck Beijing" 2008 Water Polo China Open held at Ying Tung Natatorium, China defeated Guangdong Derun (CGD) 17-11 in the men's preliminary round Group A Match 7 and the scores of the four periods were 4:2, 4:2, 4:2 and 5:5.