Correct

甲子

/ jiǎzǐ /

Strokes

Definition

first year of the sixty-year cycle (where each year is numbered with one of the 10 heavenly stems 天干[tiān gān] and one of the 12 earthly branches 地支[dì zhī])/the sixty-year cycle

Example

As a Noun

sixty-year cycle (in traditional Chinese chronology)

As a Noun

first year in a sixty-year cycle