What's the meaning of Arabia and circle?

1.？ The world is round? It can be called a summary of heaven and earth by modern people. The ancients thought? Where is the sky round? The ancients thought that the earth would always be square, because they walked on it and could see the surrounding sky. They think it is round, so they have it? Where is the sky round? This conjecture.

The ancients took it for granted that the sky was round and the earth was square because they didn't know the earth. The sky covers the earth, which is supported by four pillars. They dream of fairy tales. People say that the sky is round and the earth is square, because people at that time did not understand this truth.

Modern people have proved that the sky is not round but infinite. The earth is round. Therefore, it is called the square of heaven and the circle of the earth.