Stem-branch dating is essentially our ancestors' summary of the relationship between the movement of celestial bodies in the universe and the influence of planets on everything on the earth, which enables human beings to conform to the laws of nature and control their own destiny with them.
Generally speaking, the ancients thought that there were ten kinds of heavenly stems: A (Ji m:), B (yǐ), C (bǐng), D(Dρng), E (w ǐ), Ji (jǐ), G (gēng), Xin (xρn). Husband is still dry, strong and yang; The wood branch is weak in yin. So generally speaking, A, B, C, D and E are yang, while self, gram, symplectic, nonyl and decyl are yin.
There are twelve earthly branches: Zi (zǐ), chǐu(chǐu), Yin (yín), Mao (m ǐ o), shēn (s chén), Si (s ǐ), Wu (w ǐ) and Wei (w ǐ i). As most people here know, this is the Chinese zodiac in China. It is also the standard used by the ancients to time.
In the second year of Han and Yuan Dynasties (AD 85), the chronology of cadres and branches was adopted for the first time, and the court ordered the implementation of the chronology of cadres and branches throughout the country. Since then, the chronology of the main branches has been fixed and has continued to this day without confusion. So how to calculate the chronology of cadres and branches? Why is 2020 the Year of the Boxer Rebellion?
According to the arrangement of ancient heavenly stems and earthly branches, there are the following combinations:
Starting from the heavenly stems and continuing from the earthly branches, through calculation, the minimum common multiple of 10 and 12 is 60, so 60 years is a cycle.
So how to know the year of a certain year accurately according to the chronology of cadres and branches?
B.C.
Annual stem = 8-N(N￠8) or 8-N+ 10(N≧8), N= number of years divided by 10 remainder = number of digits of years.
Annual branch = 10-n (n
Gongyuanhou
Annual drought = n-3 (n > 3) or N-3+ 10(N≤3), where N= the remainder of the year divided by 10 = the single digits of the year.
Annual branch = n-3 (n > 3) or N-3+ 12(N≤3), where N= the number of years divided by 12.
For example, what year is 2020?
10-3=7。 So we got a Geng on the seventh day.
Then calculate the ground branch. When 2020 is divided by 12, the remainder is 4. 4-3= 1。 So the first number of earthly branches is children.
From the above calculation, it can be concluded that 2020 is the year of boxer.
So what year is 1993?
3-3+ 10 = 10, so Tiangan is sunflower.
The earthly branch is actually a Chinese zodiac, belonging to a chicken, so the earthy branch is unitary. Of course, the calculation is the same. 1993 divided by 12 is 1, 1-3+ 12= 10. So you got the unitary.
Although less and less people mention heavenly stems and earthly branches now, it can be seen in many historical books, such as the Treaty of Xin and Chou, the Reform Movement of 1898 and so on. In my opinion, people nowadays are so superstitious that they blindly follow western culture and pay little attention to their own cultural traditions. There must be a lot of wisdom to learn from the development of China's traditional culture.