Twenty-eight stars is an area of twenty-eight stars divided by ancient astronomers in China to observe the movements of the sun, the moon and the five stars, which is used to explain the positions of the movements of the sun, the moon and the five stars. There are several stars every night. Four or five thousand years ago, China began astronomical observation and accumulated a large number of documents. The ancients always regarded everything in the world as a whole. They believe that the change of the starry sky is related to the good or ill luck of people on the ground, and personnel changes, disasters and weather can be predicted from the astronomical phenomena. So whether you study history, disasters, climate change, etc. Speaking of ancient documents, we will encounter astronomical records. Now, science has not only mastered the laws of motion of the five planets observed in ancient times, but also mastered the orbits of all nine planets, thousands of asteroids and many comets, and can calculate starry sky images at any time. Even people who don't know astronomy can quickly get the astronomical phenomena at any time around 4000 AD to verify historical records. The position of the planets is always inseparable from the vicinity of the ecliptic. Foreign countries use the zodiac to record, and China uses 28 nights. As an important part of China's traditional culture, it is widely used in ancient astronomy, religion, literature, astrology, geomantic omen, lucky selection and so on.
The names of the Twenty-eight Hostels are arranged from west to east as follows: Black Dragon Seven Hostels (Jiao, Kang, Bian, Fang, Xin, Wei and Ji); Seven nights in North Xuanwu (barrels, cows, women, emptiness, danger, houses and walls); Seven nights of western white tiger (kui, Lou, stomach, Chang, Bi, Gou, Shen); South Suzaku seven nights (well, ghost, willow, star, Zhang, wing, Zhu).
The 28 huts start from Kakuk and are arranged from west to east, in the same direction as the sun and the moon:
The East is called Qinglong: Jiao Mujiao Kang Jinlong Nyctereute Fang Ri Rabbit Heart Moon Fox Tail Fire Tiger Basket Water Leopard;
In the south, Suzaku is called: Muan Jing Ghost Golden Sheep, Liu Tu, Xingri Horse, Zhang Yuelu, Winged Fire Snake, Water Worm;
In the west, it is called the White Tiger: the Golden Dog of the Tiger Wood Wolf Tower, the Stomach Soil, the Pheasant, and Alnilam, the fire monkey of Bi Wu Yue Gou;
Xuanwu north said: unicorn, golden bull, female earth bat, virtual sun rat, fierce moon swallowing room fire, pig wall water.
(According to "Night Sailing Boat" edited by Zhang Dai in Ming Dynasty, Bi Shuiyu should be Bi Shuiyu's anti-dog radical, and the right one is the rest.)