A survivor is seen in debris in this photo taken in Beichuan County, Sichuan Province on May 13, 2008. More than sixty percent of buildings in the city collapsed during the tremor. [Photo: Xinhua]

A woman encourages her son trapped in debris in Mianzhu County on May 13, 2008. [Photo: Xinhua]

A woman cries as her son is trapped in debris in Mianzhu County on May 13, 2008. [Photo: Xinhua]

A woman cries next to her daughter whose body was found on May 13, 2008 in Mianzhu County, Sichuan Province. [Photo: Xinhua]

A girl is rescued out of debris in Mianzhu County, Sichuan Province on May 13, 2008. [Photo: Xinhua]

Soldiers tranfer seriously-injured villagers to safe area after a quake-triggered landslide reduced part of Beichuan town into debris on May 13, 2008. [Photo: Xinhua]

Truck cranes set off from Changsha, Central China's Hunan Province, to help the rescuing work in Sichuan Province on May 13, 2008. [Photo: Xinhua]

A rescue worker reacts as he searches for victims in the debris of a building after an earthquake in Dujiangyan May 13, 2008. China said on Tuesday an earthquake centred in the southwest province of Sichuan killed nearly 12,000 in that province alone, Xinhua news agency reported. [Photo: Agencies]

A woman cries as a soldier escorts her away from a collapsed building after an earthquake in Dujiangyan May 13, 2008. China said on Tuesday an earthquake centred in the southwest province of Sichuan killed nearly 12,000 in that province alone, Xinhua news agency reported. [Photo: Agencies]

Rescuers carry a pupil from the debris of a collapsed school building in Dujiangyan, Sichuan province May 13, 2008. China said on Tuesday an earthquake centred in the southwest province of Sichuan killed nearly 12,000 in that province alone, Xinhua news agency reported. [Photo: Agencies]

Editor: Yan