Two drones are piloted during the opening ceremony of the Xinwu District's creative aerial photography contest held on Sept 20, the first of its kind to take place in Wuxi, East China's Jiangsu province. [Photo/wxrb.com]

Air show by drones at the opening ceremony of the Xinwu District's creative aerial photography contest held on Sept 20, which was first of its kind to take place in Wuxi, East China's Jiangsu province. [Photo/wxrb.com]