There are ten branches: A, B, C, D, E, Ji, Geng, Xin, human, and ghost. There are twelve branches: Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. The combination of the two can produce 60 units, called 60 Jiazi.
The year, month, day, and hour of birth are represented by the heavenly stems and earthly branches respectively. There are exactly eight characters, so it is called a birth date. There are also five elements in a birth date. In ten days, A and B belong to wood, B and D belong to fire, Wu and Wu belong to earth, Geng and Xin belong to gold, and Ren and Gui belong to water.
Among the twelve earthly branches, Yin and Mao belong to wood, Wu and Wu belong to fire, Shen and You belong to metal, Hai and Zi belong to water, Chen, Shu and Chou belong to earth. This way, based on the date of birth, you can know what is missing in your life. The ancients believed that you must possess all five elements to make your life rich.
Extended information:
1. Five elements nomenclature.
Wood generates fire: if the father’s name is wood, the son’s name should be fire;
Fire generates earth: the father’s name belongs to fire, and the son’s name should belong to earth;
Original gold: If the father's name is native, the son's name should be gold;
Gold-born water: If the father's name is gold, then the son's name should be water:
Water produces wood; if the father's name is water, the son's name should be wood.
2. Five luck and six qi.
"Six Qi" refers to the six climate changes of wind, fire, heat, humidity, dryness and cold.
The "Five Movements" refer to the mutual progression of the five stages of wood, fire, earth, metal, and water.