Photo taken on May 21, 2021 shows a scene of the "drone soccer challenge" at the Drone World Congress 2021 and the Shenzhen International Unmanned Aerial Vehicles (UAV) Expo 2021 in Shenzhen of south China's Guangdong Province. The Drone World Congress 2021 and the Shenzhen International Unmanned Aerial Vehicles (UAV) Expo 2021 kicked off here on Friday. A total of 369 exhibitors have brought in more than 2,000 drone products for display. (Xinhua/Wang Feng)
