What are the five elements of Shihai?

The combination of Yin-Yang and Five Elements Theory became the theory of ancient people to explain various natural and life phenomena. Divination and fortune telling are activities to predict the future. In ancient times when productivity was low, it was more difficult to grasp personal destiny and want to know more. The theory of yin-yang and five elements is used to explain a person's fate. One of the main methods is to use the date of birth to calculate fate. The so-called birthday is the year, month, day and time of birth expressed by heavenly stems and earthly branches. In the pre-Qin period, people only used heavenly stems and earthly branches to remember the days. Later, heavenly stems and earthly branches could be used to remember the days, months and days. There are ten heavenly ways: A, B, C, D, E, G, Xin, Man and Ghost. There are twelve branches: Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. The combination of the two can produce sixty units, which are called sixties. The year, month, day and time of birth are combined by heaven and earth, and there are just eight words, so it is called birth, and the fortuneteller also calls it the four pillars of human beings. There are also five elements in a birthday. In the sky, A and B belong to wood, C and D belong to fire, E and E belong to soil, G and Xin belong to gold, and Ren and Gui belong to water. Among the twelve earthly branches, Yin and Mao belong to wood, four or five belong to fire, Shen and You belong to gold, Hai and Zi belong to water, Chen, Shu and Ugly, but they don't belong to earth. In this way, according to the date of birth, you can calculate what is missing in your life. The ancients believed that fate would flourish only if the five elements were possessed.