A drone delivers a life buoy to a man in Wuhan, capital of central China's Hubei Province, May 12, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Cheng Min)

A drone burns off waste and sundries on the wire in Puyang, central China's Henan Province, March 17, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Gong Kedi)

A drone sprays pesticide in a field in Duchang County of Jiujiang City, east China's Jiangxi Province, July 2, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Fu Jianbin)

Workers check the transmission line with the help of a drone in Wuxi, east China's Jiangsu Province, Nov. 2, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Pan Zhengguang)

Visitors view a drone during an home appliance exhibition in Hefei, capital of east China's Anhui Province, Nov. 14, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Yang Xiaoyuan)

Photo taken on Aug. 2, 2015 shows an aerial view of the assembly site of the single-aperture spherical telescope "FAST" in Qiannan of southwest China's Guizhou Province. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Ou Dongqu)

Wang Tao, founder of Da-Jiang Innovations (DJI), controls a drone in his company in Shenzhen, south China's Guangdong Province, May 22, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Mao Siqian)

Photo taken on Jan. 1, 2016 shows an aerial view of the Mutianyu Great Wall in Beijing, capital of China. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Shen Bohan)

Photo taken on Sept. 9, 2015 shows a Gimball, a drone that has the function of crash-proof, at the 2015 New Leaders Meeting of the World Economic Forum in Dalian, northeast China's Liaoning Province. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Yang Qing)

A man tries a somatosensory-control drone in Beijing, capital of China, Nov. 13, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Wang Jianhua)

Aerial photo taken on Oct. 7, 2015 shows farmers picking tea leaves at Juyuan Village of Quanzhou City, southeast China's Fujian Province. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Zhang Jiuqiang)

The first experience center of Da-jiang Innovations (DJI) opens in Shenzhen, south China's Guangdong Province, Nov. 22, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Mao Siqian)

A drone monitors the fire during a drill in Shenyang, capital of northeast China's Liaoning Province, Aug. 25, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua)

Photo taken on Aug. 14, 2015 shows an aerial view of the warehouse blast site in Binhai New Area of north China's Tianjin Municipality. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua)

A drone sprays pesticide in a field in Duchang County of Jiujiang City, east China's Jiangxi Province, July 2, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Fu Jianbin)

The first drone squad of Xuanwu police station is founded in Nanjing, capital of east China's Jiangsu Province, July 14, 2015. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Li Xiang)

Photo taken on Dec. 28, 2015 shows excavators and bulldozers working at the landslide site at an industrial park in Shenzhen, south China's Guangdong Province. 2015 is the dawn of the drone age. Drone is no longer a high-tech military equipment, but also be used in photography, fire extinguishing, agricultural control and other private and commercial areas. (Xinhua/Lu Hanxin)