Chronology of trunk and branch is a kind of chronology in ancient China. That is, the twelve branches of A, B, C, D, E, Ji, G, Xin, Ren and Gui are combined in chronological order. Such as Jia Zi and Yi Chou, will return to Jia Zi after 60 years. It goes on and on. The traditional chronology of our country still follows the chronology of cadres and branches.
China lunar calendar uses heavenly stems and earthly branches as the method to calculate the year, month, day and time, that is, each heavenly stems and earthly branches is paired in a certain order and is not repeated as the code of the year, month, day and time. Put a word in the front "heavenly stems" and a word in the back "earthly branches", thus forming a pair of stems and branches.
If "Tiangan" starts with "A" and "Dizhi" starts with "Zi", we can get: 1. Jiazi 2. Picnic 3. Bing Yin 4. Ding Mao 5. Chen Wu 6. Jiu Si 7. Wu Geng 8. Xinwei 9. Ren Shen 10.
1 1. JOE 12. Yihai 13. Bing Zi 14. Ding Chou 15. Wuyin 16. Nine one 17. Chen Geng 65438.
2 1. Shen Jia 22. Yiyou 23. Xu Bing 24. Ding hai 25. Woods 26. Ugly 27. Geng Yin 28. Xinmao 29. Yan Chen 30. Guisi
3 1. Wu Jia 32. A micro 33. Shen Bing 34. Dingyou 35. The reform movement of 1898. Jihai 37. Gengzi 38. Xin Chou 39. Ren Yin 40. Guimao.
4 1 .Chen Jia 42. Yisi 43. Bingwu 44. Ding Wei 45. Wu Shen 46. Youyou 47. Geng Xu 48. Xinhai 49. Renzi 50. Ugly.
5 1 .52 good news. Mao yi 53. Chen Bing 54. Ding si 55 Five, five, six Not 57. Geng Shen 58. Heart has 59. Ren Xu 60. Guihai.
These sixty pairs of trunk branches, the heavenly trunk goes through six cycles, and the earthly trunk goes through five cycles, which is exactly sixty, so it is called "sixty trunk branches". In this order, each year is represented by a pair of branches, and sixty years is a cycle, which is called "sixty flowers". For example, 1989 is already a year, and 1990 is the year of Gengwu; From Jiazi Year 1984 to Jiazi Year 2044. This chronology method is called "chronology of cadres and branches" and has been used ever since.
Twelve kinds of animals are matched with twelve earthly branches to form the Year of the Zodiac. (See the picture below) If the year of the main branch contains the word "zi", it is the year of the rat, and all the people born in this year are "rats"; The Year of the Ox is a year of ugliness, and all the people born in this year belong to the ox. And so on.
For example, the first year of the Year of the Rat in 60 years is the year of Jiazi, and the second year of the Year of the Rat after 10 is the year of Bingzi.