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)
