Middle school students participate in an earthquake relief drill in Jinghong City of Xishuangbanna Dai Autonomous Region, southwest China's Yunnan Province, May 12, 2013, the country's Disaster Prevention and Reduction Day. [Xinhua]

Middle school students participate in an earthquake relief drill in Jinghong City of Xishuangbanna Dai Autonomous Region, southwest China's Yunnan Province, May 12, 2013, the country's Disaster Prevention and Reduction Day. [Xinhua]

Middle school students participate in an earthquake relief drill in Jinghong City of Xishuangbanna Dai Autonomous Region, southwest China's Yunnan Province, May 12, 2013, the country's Disaster Prevention and Reduction Day. [Xinhua]

Middle school students participate in an earthquake relief drill in Jinghong City of Xishuangbanna Dai Autonomous Region, southwest China's Yunnan Province, May 12, 2013, the country's Disaster Prevention and Reduction Day. [Xinhua]