Firefighters prepare to take part in a forest fire drill, which is aimed at forest fire prevention in the coming spring, at Paichazi Village in Longhua county, North China's Hebei Province, March 11, 2014. (Xinhua/Wang Xiao)

Firefighters battle the blaze during a forest fire drill, which is aimed at forest fire prevention in the coming spring, at Paichazi Village in Longhua county, North China's Hebei Province, March 11, 2014. (Xinhua/Wang Xiao)

A firefighter battles the blaze during a forest fire drill, which is aimed at forest fire prevention in the coming spring, at Paichazi Village in Longhua county, North China's Hebei Province, March 11, 2014. (Xinhua/Wang Xiao)

Firefighters battle the blaze during a forest fire drill, which is aimed at forest fire prevention in the coming spring, at Paichazi Village in Longhua county, North China's Hebei Province, March 11, 2014. (Xinhua/Wang Xiao)

A firefighter battles the blaze during a forest fire drill, which is aimed at forest fire prevention in the coming spring, at Paichazi Village in Longhua county, North China's Hebei Province, March 11, 2014. (Xinhua/Wang Xiao)