The symbol of twenty-eight stars

Astronomers, Interpretation of National Pillars Ancient astronomers in China divided the stars visible in the sky into twenty-eight groups, called twenty-eight nights, which were divided into east, west, north and south for seven nights. The seven lodging places of Oriental Qinglong are horn, sound, hall (dο), house, heart, tail and dustpan; The seven nights in Xuanwu in the north are fighting, cattle, women, air, danger, houses and walls; The seven residences of Xibaihu are Kui, Lou, Wei, Chang (O), Bi, tapir (zē) and Shen (Shē n); South Suzaku's seven nights are well, ghost, willow, star, Zhang, wing and Zhu (zhěn). India, Persia and Arabia also had similar sayings in ancient times. For example, the Secret Biography of Heaven in contemporary Yin Qian: "The star of the celestial pole star in the early Thai period is self-contained, and the celestial pole star is also three major galaxies, namely, the solar system, the Milky Way and the Yuheng galaxy. Tianxing is the universe room of heaven and science. It is located in the galaxy of the Milky Way and contains 28 planets, namely, horn, horn, room, heart, tail, dustpan, bucket, cow, female, virtual, dangerous, room, wall, kui, building, stomach, fan, bi, donkey and ginseng. (Yin Qian's "The Secret Story of the Secret" for the first time) extended to 28 places [1] ("place", pinyin: XIU, medieval pinyin: siuh), one of China's ancient astronomical theories, also known as the Twenty-eighth Palace or the Twenty-eighth Star, which was divided into 28 regions by China in ancient times. Twenty-eight stars, also known as the Twenty-eight Palace or Twenty-eight Stars, divide the stars in the southern transit into twenty-eight groups, and the circle of stars distributed along the ecliptic or the celestial equator (the equator of the earth extends to the sky) is divided into four groups, also known as four elephants, four beasts, four-dimensional and four-dimensional gods, and each group has seven stars. Its origin is still not completely clear. At first, the ancients chose 28 stars to compare the movements of the sun, the moon, gold, wood, water, fire and earth as observation marks. The meaning of "lodge" is similar to the "palace" of the zodiac, which means constellation. Represents the position of the sun, the moon and five stars. In the Tang Dynasty, Twenty-eight Hostels became the main body of the twenty-eight celestial bodies, and these celestial bodies were still named after Twenty-eight Hostels. Different from Sanyuan, as a celestial body, Twenty-eight Hostels are mainly used to divide the ownership of star officials. Twenty-eight huts are arranged from west to east, which is the same as the sun and the moon: