In ancient times, China attached great importance to the Big Dipper. In The Passage of Shi Gan, "The Big Dipper is called the Seven Houses, a vassal of heaven, and also an emperor car." The emperor sat on the Big Dipper and inspected the four directions, and it was cold and hot at four o'clock. Take the change of Beidou bucket handle direction as one of the signs to judge the season. 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.
2) Nandou Six Stars:
The names of the six stars in China Nandou are Dousu I, Dousu II, Dousu III, Dousu IV, Dousu V and Dousu VI, which are arranged in the shape of the Big Dipper. In ancient times, it was called Nandou Six Stars and was famous for its appearance. This area belongs to Dousu in 28 hotels.
Six stars are also called six lang [lang]:
Chang Zheng's textual research on history: "This star ... may be the six stars of Beidou", "The Khitans were afraid of it, so they called it the six stars of Beidou Yang Yanlang", and later the word "lang" evolved into "lang" and "six stars of Beidou" was simplified to "six stars".
Yang Yanlang-Yang Liulang, Yang Jiajiang;