Was the Great Wall of Wan Li built during Qin Shihuang's reign? What is the surname of Qin Shihuang and the origin of the Big Dipper?

1. Not completely completed ~~2. Commonly known as Ying Zheng, it was also called in Zhao's early years. Everyone agrees that this question is almost the same, as the ancients said. . . . . The position of the Big Dipper in the sky is different in different seasons. Therefore, ancient China people determined the four seasons according to its position change. "Shi Gan Jing Jing": "Beidou is called the Seven Houses, the Minister of the Emperor, and the Emperor Car." The emperor sat on the Big Dipper and inspected the four directions, and it was cold and hot at four o'clock. The ancient book "Guo Guanzi" records: "Dou Dong refers to human spring; Fighting in the south and fighting in the north, the world is summer; Fighting against the west means that the world is autumn; The northern war is the winter in the world. " In ancient times, Polaris was regarded as a symbol of God, and Beidou was the imperial chariot that God drove when he toured the world. A year begins in spring, when Beidou is in the east, and God begins to patrol from the east, so it is easy. Biography: "Emperor Jing", divination is in the east.