The ten heavenly stems and the twelve earthly branches match each other in order, from Jiazi to Guihai, there are sixty combinations, called sixty Jiazi.

Heavenly Stems and Earthly Branches:

Heavenly Stems: A, B, C, D, Wu, Ji, Geng, Xin, Ren, Gui

Earthly Branches: Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai

Their arrangement is in order.

A cycle of stems and branches (sixty years) )

Jiazi Yi Chou Bing Yin Ding Mao Wu Chen Ji Si Geng Wu Xin Wei Ren Shen Gui You Jia Xu Yi Hai

Bing Zi Ding Chou Wu Yin Ji Mao Geng Chen Xin Si Ren Wu Gui Wei Jia Shen Yi You Bing Xu Dinghai

Wu Zi Ji Chou Geng Yin Mao Ren Chen Gui Si Jia Wu Yi Wei Bing Shen Ding You Wuxu Ji Hai

Geng Zi Xin Chou Ren Yin Guimao Jia Chen Yi Si Bing Wu Ding Wei Wu Shen Ji You Geng Xu Xinhai< /p>

Renzi Guichou Jiayin Yimao Bingchen Dingsi Wuwu Jiwei Geng Shen Xinyou Renxu Guihai

This cycle is called "Yijiazi", which is 60 years.