Suspected that the Milky Way has fallen for nine days! How on earth did the ancients know about the Milky Way?

According to reports, in this primitive religious relic in the middle of 4000 BC, the third group of relics symbolizing Tianyu world, there are many mussels with stars symbolizing the Milky Way. [Poetry Analysis] Under the sunshine, the white smoke rising from the incense burner peak turned into purple clouds, and the waterfall hung like a huge white practice between mountains and rivers. The waterfall fell into the air like a cloud 3,000 feet away, like a galaxy falling from the sky. The Milky Way here refers to the glistening silver that fell from the sky like a river in Kuya for nine days, which can make Li Bai not addicted to the meat forest wine pool. Why not?

Everything in history is recorded and known, which fully illustrates the problem. We read the Tang poem "Flying down three thousands of feet, suspecting that the Milky Way has set for nine days", which affirmed the ancients' extensive understanding of the Milky Way. Today's children don't even know how beautiful the night sky was at that time, and even think it was painted by a god! Of course, I don't know how spectacular the Milky Way is shining in the bright night sky! Therefore, it is not surprising that they ask questions like this. However, understanding the knowledge of the Milky Way should be a modern thing. For example, how many stars it consists of, the position of the solar system in the Milky Way, and how many galaxies similar to the solar system exist in the Milky Way. Only modern astronomical instruments can perceive this knowledge.

What the ancients didn't know was the relationship between the moon, the earth, the sun and silver, that is, the moon revolves around the earth, the earth revolves around the sun, and the sun revolves around the center of the Milky Way. These laws of motion cannot be mastered yet. Don't underestimate the wisdom and observation of the ancients. Many things that we think are modern inventions were actually used by our ancestors thousands of years ago, such as matcha cakes, cheese, vernier calipers and vises ... In fact, Li Bai may not believe that the water of Tianhe will pour into the world. I just find it incredible. Don't poems like "Lonely smoke in the desert, the Yellow River sets the yen" express the same feeling?