What does turtle hair mean? Where is it used?

If you want to know Guimao, you must first know heavenly stems and earthly branches. What is heavenly stems and earthly branches? Heavenly stems and earthly branches, also referred to as the main branch, was an ancient observation of astronomical phenomena in China. It can be divided into ten heavenly stems and twelve earthly branches. Simplified ten-day tasks are: a, b, c, d, e, f, g, f, n, d; Simplify the twelve branches into Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai. Ten heavenly stems and twelve earthly branches dominate the yang branch and the yin branch according to the yang, forming sixty jiazi, and so on, forming the heavenly stem era method. Guimao is essentially one of the main branches, ranking 40th in a main branch cycle.

Heavenly stems and earthly branches's Midland Branch is the most intuitive to the five elements. Among the five elements, the twelve earthly branches correspond to the twelve zodiac signs: the offspring belong to the sunny water, and the north; Ugly-cattle belong to the soil, the center; Yin —— Populus davidiana, East; Hairy rabbits belong to the shade wood, the east; Chenlong belongs to Yang soil, in the middle; (4)-snakes are yin fire, south; Noon-the horse belongs to yang fire, south; Wei-sheep belongs to yin soil, in the middle; Shen-monkey, west; Unitary-chicken belongs to yin gold, western; Xu-the dog belongs to yang soil, ring; The sea pig belongs to Yin water, north.

Heavenly stems and earthly branches's influence on astronomical observation and solar terms. Ancient ancestors looked up to astronomy and discovered the Big Dipper after a long period of observation. People can decide the season according to the direction pointed by the Big Dipper bucket handle: bucket handle points to the east, and spring will come; The barrel handle points to the south, and summer is here; The handle of the bucket points to the west, and autumn is here; The handle of the barrel points to the north, and winter is coming. Of course, December can also be determined according to the different positions of the twelve dates indicated by bucket handle and the Big Dipper. Using 60 years as a cycle to represent calendar year, calendar month, calendar day and calendar is also a unique chronological method in China.

Heavenly stems and earthly branches also had a great influence on Feng Shui, numerology, Confucianism and Chinese medicine. Our ancestors endowed heavenly stems and earthly branches with mysterious cultural color, and there are endless contents waiting for us to explore.