Aerial photo taken on March 14, 2021 shows the construction site of Wenchang International Aerospace City in Wenchang, south China's Hainan Province. Workers have been busy completing road network in the aerospace city recently. Wenchang, a small city in Hainan known for its spacecraft launch center, aims to build itself into a platform for aerospace exchange and cooperation. (Xinhua/Pu Xiaoxu)