(250416) -- BEIJING, April 16, 2025 (Xinhua) -- This image provided by the Technology and Engineering Center for Space Utilization (CSU) of the Chinese Academy of Sciences (CAS) illustrates the three-satellite constellation based on the Distant Retrograde Orbit (DRO) in the Earth-moon region of space. TO GO WITH "China Focus: China builds three-satellite constellation in Earth-moon space" (Technology and Engineering Center for Space Utilization of the Chinese Academy of Sciences/Handout via Xinhua)