What was the theory before the earth circle theory?

Di Ping said. The theory of earth circle was first put forward in ancient Greece. It is said that the earth was flat before it. The theory of earth circle was first put forward by Pythagoras, an ancient Greek mathematician, in the 6th century BC. He said that the earth is spherical, but he has no objective basis, just because he emotionally thinks that the sphere is the most beautiful in three-dimensional graphics.