
Captain of the flying team checks drones before taking off in Jixian County, north China's Shanxi Province, April 25, 2017. Over 50,000 mu (3,333 hectares) of apple trees will be sprayed pesticide with drones this year. (Xinhua/Cao Yang)

Captain of the flying team checks drones before taking off in Jixian County, north China's Shanxi Province, April 25, 2017. Over 50,000 mu (3,333 hectares) of apple trees will be sprayed pesticide with drones this year. (Xinhua/Cao Yang)