What does 12 year mean?

According to the Gregorian calendar, the 12-year cycle refers to the earthly cycle in the traditional chronology of branches and branches in China. Twelve earthly branches: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Every twelve years, it will start again.

The year refers to the year. The second episode of China ballad information is Yaoshan bitter love song. At the end of the year, the abacus rang and it was still empty.