Ten days' work

"A, B, C, D, E, B, G, A, B, C, B" is called ten-day work.

In China calendar, Yin and Yang are the main branches, Yin naturally refers to the moon, Yang refers to the sun, and the main branch refers to heavenly stems and earthly branches. Heavenly stems: A, B, P, D, E, G, N, N branches: Zi Chou Yin Mao, Tatsumi, did not apply for a visit at noon. In order, heavenly stems and earthly branches takes one word each to form a calendar year, such as Jiazi Year and Ugly Year. After 60 years, I returned to the starting point, so 60 years is called Jiazi. So 60 years old is also called 60 years old.

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In the ancient imperial era, there was the embryonic form of Ganzhi calendar and Nian. "Ganzhi" was called "Sui" in ancient times (photo). According to the records of Pangu Wang Biao and Three Meetings, "the name of the first emperor is named after the name of the branch, and the age is determined."

Ten days later, I said, "To meet, to be enlightened, to be gentle, to be strong, to be brave, to be cruel, to be stamped, to emphasize light, to be mysterious and to be sunny"; Twelve places support: Paitige, Shan Yu, Xu Zhi, Dahuang, Tang Dun, Qi Xie, Jitan, Zuo Meng, Mao Yan, Dayuanxian, Dilemma, and Chifenruo. "Year" takes 60 Jiazi (chronology of branches and branches) as the operation cycle. "Easy cohesion" comes into being at the age of 30.

Taiping Yulan Volume 17 quoted Ming Shi as saying: "The older you get, the more you get. More and more limited, more and more years, and then more and more, more and more, more and more. " "Kaiyuan Zhan Jing" Volume 67 quoted Lie Hong of Huainan as saying, "It is too early to fight. (Note:) If you are old, it will be twelve days more. " Biography of the White Tiger is one year old, so it is also.

Shuowen: "Age: Jupiter also. Twenty-eight nights come, telling yin and yang all over, once in December, from the sound of footsteps. " Biography of Huang San: "King Mudd of Heaven, taken at the age of". Wan Minying, a famous historian in Ming Dynasty, confirmed that the drought calendar was invented in the era of Emperor Wu of Han Dynasty according to the records of ancient documents in China, and it was recorded in detail in his book "Three Boys' Meeting".

Heavenly stems and earthly branches's invention had a far-reaching impact, and it was used in calendar, arithmetic, calculation, naming, etc. (Zi Tongzhijian, the official history compiled in the Northern Song Dynasty, used this set of official terms to record the years).

Baidu Encyclopedia-heavenly stems and earthly branches