Officers and soldiers of the Chinese People's Liberation Army work in a rescue operation in the rubbles of destroyed houses in Yushu County, northwest China's Qinghai Province, April 14, 2010. About 400 people have died and 10,000 others were injured after a 7.1-magnitude earthquake hit Yushu early on Wednesday. [Xinhua]

A military plane carrying recsuers from southwest China's Sichuan Province flies to the quake area in Yushu County, northwest China's Qinghai Province, in this picture taken on the plane, April 14, 2010. The plane transported 52 Sichuan rescuers and their equipment to Yushu on Wednesday. [Xinhua]