A flame-spurting drone is seen during a demonstration in Chongqing, southwest China, Jan. 16, 2019. The drone was developed by Chongqing's Yongchuan company of the State Grid corporation to help clear harmful obstacles hanging on overhead wires. (Xinhua/Liu Chan)
A flame-spurting drone destroys a hornet's nest on a wire pole in Xiaokan Village of Chongqing, southwest China, Jan. 16, 2019. The drone was developed by Chongqing's Yongchuan company of the State Grid corporation to help clear harmful obstacles hanging on overhead wires. (Xinhua/Liu Chan)
A flame-spurting drone destroys a hornet's nest on a wire pole in Xiaokan Village of Chongqing, southwest China, Jan. 16, 2019. The drone was developed by Chongqing's Yongchuan company of the State Grid corporation to help clear harmful obstacles hanging on overhead wires. (Xinhua/Liu Chan)