What do you mean it was built too many years ago?

Tai sui, the astrology founded in the era of the yellow emperor, is also called "taking pictures" At the age of 60, the running cycle is based on the branch and branch chronology of 60 Jiazi.

At the end of the Western Han Dynasty, Liu Xin sorted out twelve places where the old star stayed in the sky area according to ancient data, which were called "twelve times"; These "twelve times" are: Jixing, Xu Anbi, Xialou, Daliang, Shishen, Quail Head, Quail Fire, Quail Tail, Shouxing, Fire and Wood Analysis. Tai sui Shen corresponds to 60 Jia Zi, a total of 60, one on duty every year. Tai sui, who was on duty that year, was called "Tai sui", the son of heaven in the middle of the year, and was in charge of the good and bad luck of the world that year.

Monthly construction generally refers to twelve branches, such as Jian Zi, Jian Chou and Yin Jian. "Sword" represents the direction of the top of the bucket handle of the Big Dipper. In ancient astronomy, bucket handle and the Big Dipper were called "swords". Years old were divided into twelve days in the calendar, and bucket handle took turns to call them "December swords". December is a solar month based on 24 solar terms.

Extended data

The so-called "moon building" of the ancients is to connect the twelve months of a year with the twelve days in the sky. Twelve Chen is a concept of ancient astronomy, which divides the twelve days around the ecliptic (that is, the route of the sun moving once a year in the sky) into twelve equal parts, with twelve branches from east to west: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Twelve branches match December and are called "Building the Moon", "Building the Ugly Moon" and "Building silver moon".

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