It's a tale of treasure and adventure. Human beings live on the earth, but humans know very little about the earth, stepping on the footprints of trilobite fossils, the remains of giants, aerial aerial views of ancient times, the continent of Antarctica covered by glaciers, the starry sky maps described on ancient murals, etc., whether prehistoric civilizations really existed on the earth. Exploring the starry sky is an eternal dream of mankind. On a clear night, whenever we look up, we see a sky full of stars. Since ancient times, the starry sky has aroused countless human imaginations with its incomparable vastness, depth, beauty and mystery. The famous American science fiction television series "StarTrek" has this short but meaningful inscription: Starry Sky, the Last Frontier.