Citizens gather outside their apartments to avoid aftershocks of the earthquake in Chengdu, capital of Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chengdu felt the earthquake. (Xinhua/Li Qiaoqiao)

Citizens gather outside their apartments to avoid aftershocks of the earthquake in Chengdu, capital of Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chengdu felt the earthquake. (Xinhua/Li Qiaoqiao)

A fissure is seen on a wall of the restaurant, possibly caused by a quake, in Shifang, Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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/Liu Jinhai)

 A woman holds her child outside her apartment to avoid aftershocks of a quake, in Chengdu, capital of Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chengdu felt the earthquake. (Xinhua/Li Qiaoqiao)

 Citizens gather outside their apartments to avoid aftershocks of a quake, in Chengdu, capital of Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chengdu felt the earthquake. (Xinhua/Li Qiaoqiao)

 Citizens rush to run from their apartments to avoid aftershocks of an earthquake, in Chongqing, adjacent to Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chongqing felt the earthquake. (Xinhua/Luo Guojia)

 Citizens rush to run from their apartments to avoid aftershocks of an earthquake, in Chongqing, adjacent to Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chongqing felt the earthquake. (Xinhua/Luo Guojia)

 Citizens gather outside their apartments to avoid aftershocks of an earthquake, in Chongqing, adjacent to Southwest China's Sichuan Province, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of Sichuan Province at 8:02 am 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. Residents in Chongqing felt the earthquake. (Xinhua/Li Jian)

 Citizens wearing pajamas gather outside their apartments to avoid aftershocks of an earthquake, in Chongqing, Southwest China, April 20, 2013. A 7.0-magnitude earthquake hit Lushan County of neighboring Sichuan Province, also in southwest China, at 8:02 am 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. Residents in Chongqing also felt the earthquake. (Xinhua/Chen Cheng)