Residents take shelter in tents after a 7.8-magnitude quake, in Dujiangyan city of southwest China's Sichuan Province, Monday, May 12, 2008. The powerful earthquake toppled buildings, schools and chemical plants in central China on Monday, killing nearly 10,000 people and trapping untold numbers in mounds of concrete, steel and earth in the worst quake in three decades.  [Xinhua]