The so-called heavenly stems are ten words: nail, B, C, D, E, Ji, Ke, Xin, Ren and Gui, and the earthly branches are twelve words: Zi, Ugly, Yin, Mao, Chen, Si, Wei, Shen, You, Xu and Hai. In the arrangement and combination of branches, the heavenly stems start from "A" and the first word "Zi" of the earthly branches is taken in turn, and 60 groups of different branch combinations are obtained, which are called "One Jia Zi (60 years) and One Hua Jia". The lunar calendar is also called the lunar calendar, which can affect agricultural production. Some agricultural proverbs, such as "Xue Ruizhao has a good year" and "May 969, look up at the willows", have great accuracy. The lunar calendar takes the dry branch as the date of the year and month, and the dry branch is the core of the lunar calendar. For example, this year is when Shen Jianian, Jia Shumu, Shen Shujin, Jin Kemu and Jin Mu are at war and there is a disaster. Maybe we can contact this year. In other words, branches can affect agricultural production, agriculture belongs to plants, and people and plants belong to living things, so branches can also affect people's lives.
Heavenly stems and earthly branches belongs to Jin Mu's five elements of fire, water and soil, and the five elements generate water, and aquatic wood, where wood makes fire, fire generates soil, and soil generates gold, which goes on and on. Jin Kemu, wood-born soil, soil-born water, aquatic fire, fire-born gold, and so on. In this way, according to the five elements of prosperity to which the birth belongs, the prison is released, yin and yang are restrained, and the punishment is combined.
When a person takes the first breath of air after birth, his life is determined by the celestial movement at the time when the first breath of air is taken, that is, the yin and yang elements to which he belongs. Every moment he passed is his "luck", and the combination of "fate" and "luck" is his life. A person who knows the eight-character prediction can infer his fate according to his five-element change at each time. This is the "eight-character prediction".