Heavenly stems and earthly branches's top secret songs in the eight-character formula are: one, two, three, four and fierce.
The eight characters, also called four pillars, are heavenly stems and earthly branches's eight characters found in the calendar, which represent the year, month, day and time of a person's birth with the heavenly stems and earthly branches of heaven and earth. It adds up to eight words. Eight-character is a method of pushing gold according to eight characters, and the approved months of eight characters are wrongly divided according to the twenty-four solar terms. For example, beginning of spring is still the year before, and beginning of spring is the New Year, which is not directly related to the lunar calendar. The two solar terms are one month, the window month is between beginning of spring and beginning of spring, the window month is between beginning of spring and Qingming, and so on.