Please explain your application in the afternoon.

Xinsi is one of the main branches, and the order is 18. The former is Chen Geng and the latter is Ren Wu. On the five elements of yin and yang, the sweetness of heaven's dryness belongs to yin's gold, and the fire of earth's branches belongs to yin's fire, which means that fire can win gold.

Guisi is one of the main branches, with a rank of thirty. The former is Ren Chen and the latter is Wu Jia. On the five elements of yin and yang, the heavenly stems belong to the water of yin, and the earthly branches belong to the fire of yin, which means that water is like fire.

Renwu is one of the main branches, and the order is 19. The former is Xin Si and the latter is Gui Wei. On the five elements of yin and yang, the heavenly stems belong to yang water, and the earthly branches belong to yang fire at noon, which means water is like fire.

Wu Shen is one of the main branches, with an order of 45. The former is Ding Wei and the latter is Ji You. On yin and yang and five elements, heavenly stems belong to the soil of yang, and earthly branches belong to the gold of yang, which is the birth of gold.

Birthday, or eight characters, is actually another way of saying the four pillars of Zhouyi. Four pillars refer to the time when a person was born, that is, year, month, day and hour. When people use "heavenly stem" and "earthly branch" to represent year, month, day and hour respectively, such as Jiazi Year, Shen Bingyue, Xin Ugly Day and Renyin Time. There are two words in each column and eight characters in four columns, so fortune telling is also called "measuring eight characters" According to the relationship between yin and yang attributes and the five elements of heaven and earth, it is inferred that human body is responsible and blessed. However, what I want to talk about here is not how to "measure eight characters", but how to calculate eight characters.