Twenty-eight hotels originated very early. Originally, it was the 28 groups of stars (or constellations) used by the ancients to observe the running coordinates of the sun, the moon and the five stars. The ancients believed that the positions of the stars were unchangeable, and constellations could be used to explain the positions of the sun, the moon and the five stars. After long-term observation, the ancients chose 28 stars near the equator of the ecliptic as coordinates. Because they revolve around the sun, the moon and the five stars, they are very similar to the places where the sun, the moon and the five stars live, so they are called twenty-eight lodgings. The ancients also divided twenty-eight lodgings into four palaces, east, south, west and north, with seven lodgings in each palace. Each palace imagines its seven dwellings as an animal, and considers it as "the four souls of heaven and square". The seven nights of the East Palace Black Dragon are Jiao, Kang, Bian, Fang, Xin, Wei and Ji; The seven nights that Nangong Suzaku belongs to are: well, ghost, willow, star, Zhang, wing and bird; The seven nights that Xigong White Tiger belongs to are: Kui, Lou, Stomach, Ang, Bi, Gou and Shen; Gong Bei Xuanwu (tortoise and snake) belongs to seven nights: fighting, ox, female, emptiness, danger, house and wall.
Twenty-eight Hostels are not only the coordinates of the five-star position of the sun, the moon and some of them are the observation objects for the ancients to determine the age and season. For example, when you feel dizzy for the first time, staying in the south is the first month of spring, staying in the south is May in summer, and so on. Twenty-eight nights revolve around the astronomical phenomena, which are in charge of four astronomical phenomena, namely, east, west, north and south, to divide the alternation of day and night, cold and heat, and the change of yin number. Over time, 28 stars have been given different meanings of good and bad luck, which is another important theoretical basis for the ancients to choose the date.
The saying of Twenty-eight Hostels exists not only in China, but also in ancient Indian, ancient Rome and other ancient cultural countries, but with different names and meanings. Twenty-eight nights take turns to be on duty, which breaks the origin of good and bad luck. It is difficult to study it in detail now. This method has been adopted in the almanac of the Southern Song Dynasty. Later, folk warlocks matched 28 kinds of animals, further developing the connotation of 28 stars for good or ill luck. It records the good and bad luck of 28 species of animals in 28 places in detail, and attaches a popular book of auspicious day selection in the form of popular songs for your reference.
Corner, room, heart and tail dustpan (seven nights in the East)
Virtual Dangerous Wall for Bullfighting Women (Seven Nights in the North)
Queyrau's stomach is full of ginseng (seven nights in the west)
Ghost Well, Liu Xing, Zhang Yi (Seven Nights in the South)