Farmer applies 'helicopters' in crop pest control (2/4)
2014-10-16 10:07
Ecns.cn
Web Editor:Yao Lan
Ding Shuanghui (R) prepares to fly a drone in his contracted farmland in Changsha, Central China's Hunan province on October 15, 2014. [Photo: China News Service/ Yang Huafeng]
