Ask the teacher how to arrange 60 Jia Zi heavenly stems and earthly branches in the Book of Heluo.

Heavenly stems and earthly branches, referred to as Ganzhi for short, is used to arrange year numbers and dates in the summer calendar.

Tiangan is: A, B, C, D, E, G, Xin, Ren and Gui, also called Tiangan; The earthly branches are: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai, also known as the Twelve Earthly Branches. Branches are still divided into yin and yang: A, C, E, G, Ren for yang dryness, B, D, Ji, Xin, classified as yin dryness; Zi, Yin, Chen, Wu, Shen and Xu are the Yang branches, while Ugliness, Mao, Si, Wei, You and Hai are the Yin branches. A heavenly stem and a terrestrial branch are arranged in pairs, with the heavenly stem in front and the terrestrial branch behind, the heavenly stem from the nail, the terrestrial branch from the child, the yang stem with the yang branch, and the yin stem with the yin branch (the yang stem without the yin branch and the yin stem without the yang branch). Sixty combinations are called "Sixty Jia Zi". In the past, people in China used to recycle calendar year, calendar month, calendar day and calendar time.

1 .jiazi 2. Ugly B 3 Bing Yin 4. Ding Mao 5. Chen Wu 6. Keith 7. Wu Geng 8. Xin Wei

9. Ren Shen 10. Gui You 1 1. JOE 12. Yihai 13. Bing Zi 14. Ding Chou 15. Wuyin 16. Ji.

17. Chen Geng 18. Xinsi 19. Renwu 20. Guiwei 2 1. Shen Jia 22. Yiyou 23. Xu Bing 24. Ding hai.

25. Wu Zi 26. Ugly 27. Geng Yin 28. Xinmao 29. Yan Chen 30. Your company 3 1. Wu Jia 32. the Kingdom of Wei（220-265 A.D）

33. bing Shen 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. Ji You 47. Geng Xu 48. Xinhai

49. Renzi. Guichou 5 1. Good news 52. Mao yi 53. Chen Bing 54. Butyl 55. Five, five, six Not yet.

57. Geng Shen 58. Heart has 59. Ren Xu 60. Guihai