Aerial photo taken on Sept. 17, 2022 shows a satellite assembly testing plant under construction at the Wenchang International Aerospace City in Wenchang, south China's Hainan Province. Focusing on the development of aerospace science and technology, the Wenchang International Aerospace City, one of the key industrial parks of Hainan free trade port, is undergoing construction in an orderly manner. [Photo by Pu Xiaoxu/Xinhua]