Heavenly stems and earthly branches corresponds to twelve months.

The arrangement order is: a, b, c, d, e, f, g, Xin, n, d; Ground branch * * * twelve words.

Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu, Hai, Zi, Ugly Zheng, Two, Three, Four, Five, Six, Seven, Eight, Nine, October, November, December Yin, Mao and Chen are the spring of the lunar calendar, and everything sprouts and breeds in spring.

Note: The above contents are for reference only, so don't be superstitious.