Let's talk about the stars and the Big Dipper.

Level: On April 9th, 2007, there were seven bright stars arranged in a barrel shape in the northern sky. We often call them the Big Dipper. The names of these seven bright stars are: Shu Tian, Tian Xuan, Tianji, Tian Quan, Yuheng, Kaiyang and Yaoguang. The first four stars are called "Dou Kui" or "Xuan Ji"; The last three stars are called "bucket" and "bucket handle". These seven stars are α, β, γ, δ, ε, ζ, η in Ursa major, and the other six stars are all second-class except the celestial force δ. The line connecting Tian Xuan β and Shu Tian α is about five times longer, and Polaris can be found. Therefore, beta and alpha stars are also called "Polaris". According to the four directions of east, west, north and south, the 28 stars are divided into four groups (1), namely, Qisujiao, Kang, Di, Fang, Xin, Wei, Bai (2), Qisudou, Niu, female, Xu, Wei, Fang and Bi (3), Qi and Xibaihu. The three walls (Taiwei Wall, Weizi Wall and Shi Tian Wall) at 28 nights were the standard for dividing celestial bodies in ancient China, while the ancient west also divided the orbit of the sun into twelve regions, which coincided with the east. The western zodiac signs are the so-called twelve constellations. However, in the west, humanity is the main factor, so intriguing romantic stories are developed, while in the east, animals are closely related through the combination with nature. The ancients used 28 stars as a symbol to measure the position and movement of the sun and the moon, so ancient books said that the moon was at the end of the sky (that is, the moon was attached to the end of the sky), Mars stayed in Antares (that is, Mars was in the heart), and the sky was too white to eat (that is, Venus covered the eternal night). Twenty-eight stars are not only the coordinates for observing the five-star positions of the sun, the moon and the sun, but some of them are the observation objects determined by the ancients throughout the year. For example, in the pre-Qin period, the ancients thought that when you first fainted, your heart would be in the south, that is, in May of summer, and staying in the south was the first month of spring.