A worker with the meteorological authority in Qingzhen city, Southwest 皇冠体育app's Guizhou province, loads a rocket that contains chemicals that spur precipitation before firing it to bring artificial rain to the drought-ravaged region, August 4, 2011. [Photo/CFP]

A rocket that contains chemicals that spur precipitation is fired into the sky to bring artificial rain to the drought-ravaged Qingzhen city, Southwest 皇冠体育app's Guizhou province, at midnight August 4, 2011. [Photo/CFP]