Staff members work at the landing site of the return capsule of China's Chang'e-5 probe in Siziwang Banner, north China's Inner Mongolia Autonomous Region, on Dec. 17, 2020. The return capsule of China's Chang'e-5 probe touched down on Earth in the early hours of Thursday, bringing back the country's first samples collected from the moon, as well as the world's freshest lunar samples in over 40 years. (Xinhua/Lian Zhen)
