The moon is the nearest celestial body to the earth, but how to fly from the earth to the moon is not a simple problem. Although Apollo astronauts have already landed on the moon more than 30 years ago, today's human return to the moon cannot simply repeat Apollo. The way to land on the moon. Because the return of humans to the moon today is more complicated and difficult than that of Apollo, not only did more people fly to the moon than Apollo, but also people did not simply conduct expeditions and expeditions after reaching the moon. It is to build a base on the moon, to comprehensively develop and use the moon, and to work and live on the moon for a long time. The text is intended to explain:. ["Man's mission to return to the moon is even more difficult.", 'The environment for humans to return to the moon is more complicated.', 'The purpose of human landing on the moon is to open up new living spaces.', 'Human development and use of the moon is yet to come.']