Rescuers work on the debris in Yushu County, northwest China's Qinghai Province, April 15, 2010. Joint efforts of the nationwide forces have been put into effect after a 7.1-magnitude earthquake hit Yushu early on Wednesday. [Xinhua]

Rescuers from China's Sichuan Province work on the debris in Yushu County, northwest China's Qinghai Province, April 14, 2010. The death toll of China's Qinghai 7.1-magnitude earthquake rose to 589 as of 1:20 a.m. Thursday, according to the local quake-relief headquarters. [Xinhua]