Workers set up prefab houses in quake-hit Yushu County, northwest China's Qinghai Province, April 17, 2010. Setting of prefab houses is underway for locals who became homeless after the 7.1-magnitude earthquake hit Yushu of Qinghai Province on Wednesday. [Xinhua]

Three locals stand outside a prefab house being set up in quake-hit Yushu County, northwest China's Qinghai Province, April 17, 2010. Setting of prefab houses is underway for locals who became homeless after the 7.1-magnitude earthquake hit Yushu of Qinghai Province on Wednesday. [Xinhua]