Soldiers prensent wreaths during a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

 People attend a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

Soldiers attend a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

A national flag-raising ceremony is held at a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

A flower is presented to victims during a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

People attend a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

Soldiers attend a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)

Students attend a mourning ceremony to mark the first anniversary of the Lushan earthquake at the Longxing central school in Longmen Township of Lushan County, southwest China's Sichuan Province, April 20, 2014. The 7.0 magnitude earthquake hit Lushan on April 20, 2013, killing 196 people and injuring over 11,000 others. (Xinhua/Xue Yubin)