Questions about the theory of Hun Tian, ??Turtle Tuo, and round sky and square earth

Let me tell you! Note that this is purely handwritten by me, so I must rate it as the best!

Huntian theory goes a step further than Gaitian theory. It believes that the sky is not a hemisphere, but a whole sphere, with the earth inside it, just like the yolk of an egg is inside an egg. However, the Huntian theory does not believe that the "celestial sphere" is the limit of the universe. It believes that there are other worlds outside the "celestial sphere", which is what Zhang Heng said: "Those who pass by here may not know it. Those who do not know it may know it. , that is, the universe. The surface of the universe is infinite, and the end of the universe is infinite." However, if the sky is round, the sky that people see will be a curved surface, so this theory is rejected.

The theory that the sky is round and the earth is square is actually similar to the theory of the muddy sky. The sky cannot be round, so if the earth were square, Magellan's circumnavigation would not have been successful.

The Turtle Tuo theory is simply made up out of nothing. Is the earth really on four elephants, and the elephant is standing on a turtle with a snake wrapped around it? ! How is it possible? Think about it with your toes. . .