File photo taken on March 20, 2013 shows an aerial view of Siyan Township of Lushan County in Yan'an City, southwest China's Sichuan Province. A 7.0-magnitude earthquake hit Lushan County at 8:02 a.m. Beijing Time (0002 GMT) on Saturday, according to the China Earthquake Networks Center (CENC). The epicenter, with a depth of 13 kilometers, was monitored at 30.3 degrees north latitude and 103.0 degrees east longitude. (Xinhua/Jiang Hongjing)

File photo taken on March 20, 2013 shows an aerial view of Longmen Township of Lushan County in Yan'an City, southwest China's Sichuan Province. A 7.0-magnitude earthquake hit Lushan County at 8:02 a.m. Beijing Time (0002 GMT) on Saturday, according to the China Earthquake Networks Center (CENC). The epicenter, with a depth of 13 kilometers, was monitored at 30.3 degrees north latitude and 103.0 degrees east longitude. (Xinhua/Jiang Hongjing)