A boy drinks water after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

A staff member from Yunnan Construction Group adds direct drinkong water to a water tank in a temporary settlement after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

Water purification equipments are put into use to supply direct drinking water after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

A mineral water enterprise supplies direct drinking water to the affected people for free after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

Water purification equipments are put into use to supply direct drinking water after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

A mineral water enterprise supplies direct drinking water to the affected people for free after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

Water purification equipments are put into use to supply direct drinking water after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civillians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Huang Yong)

Officers and soldiers search for survivors after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civilians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Wang Ning)

A woman feeds a baby at a temporary settlement after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civilians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Lin Yiguang)

Officers and soldiers search for survivors after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civilians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Wang Ning)

The affected people prepare to eat supper at a temporary settlement after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civilians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Lin Yiguang)

The affected people rest at a temporary settlement after a 6.5-magnitude earthquake in Ludian County of Zhaotong, southwest China's Yunnan Province, Aug. 6, 2014. Disaster relief work is in progress after the earthquake struck Yunnan on Sunday afternoon. Civilians in temporary settlements within areas that are most severely affected have already had access to fresh meal and potable water. (Xinhua/Lin Yiguang)