People's Liberation Army (PLA) soldiers walk past a truck loaded with corpses of earthquake victims being transported to the site of a mass cremation in the town of Gyegu in Yushu County, Qinghai province April 17, 2010. Tibetans cremated their dead on Saturday after a massive earthquake struck a remote part of China earlier in the week, killing more than 1,000 people and leaving thousands huddled in the cold in makeshift tents.

Chinese paramilitary policemen look for survivors under the debris of collapsed houses after an earthquake in Yushu, Qinghai province, April 16, 2010.

BEIJING - APRIL 14: Members of a rescue team board an aircraft bound for quake-ravaged Yushu at Nanyuan Airport on April 14, 2010 in Beijing, China.

YUSHU, CHINA - APRIL 15: Survivors of Qinghai's earthquake wait for being transferred to Xining for medical treatment at Batang Airport on April 15, 2010 in Yushu, Qinghai province of China. China's leaders have urged rescuers to make 'all-out efforts to save lives' as the death toll of Wednesday's Qinghai 7.1-magnitude earthquake rose to 617.

Medical personnel attend to an injured survivor who was rescued from the rubble of a collapsed building on April 15, 2010 after a 6.9-magnitude earthquake hit Yushu county in northwest China's Qinghai province on April 14. Rescuers with shovels and bare hands clawed through rubble to hunt for survivors of the quake in a remote area of China which killed over 600 people and made thousands homeless.

A team of Chinese pararmilitary police patrol in front of a damaged building in the earthquake-hit Jiegu town, Yushu, in west China's Qinghai province, Thursday, April 15, 2010. Rescue teams fought gusty winds and altitude sickness Thursday as survivors faced a second night outside in freezing weather after strong earthquakes left more than 600 dead and 9,000 hurt in a mountainous Tibetan area of western China.

Rescuers & residents search for survivors buried in the rubble of a collapsed buildings on April 15, 2010 after a 6.9-magnitude earthquake hit Yushu county in northwest China's Qinghai province on April 14.

The China International Search and Rescue Team arrives at Yushu airport. Soldiers and civilians used shovels and their bare hands to dig through collapsed buildings in search of survivors.

Injured survivors take refuge at Yushu airport, waiting for medical attention and transfer after the earthquake. China poured rescue crews and equipment into the mountainous Tibetan region Thursday in a bid to find survivors more than a day after strong earthquakes killed hundreds of