1. Ten-day stems are pronounced as: A (ji ǐ), B (yǐ), C (bǐng), D(Dǐng), E (w ǐ), Ji (jǐ) and G(Gǐng) respectively.
Second, the twelve earthly branches are pronounced as: Zi (zǐ), chou (Chou), Yin (yín), Mao (m ǐ o), Chen (chén), Si (south), Wu (w), and Sheng (south).
Three. introduce
Heavenly stems and earthly branches, the main branch for short, originated from the observation of astronomical phenomena in ancient China. Ten heavenly stems and twelve earthly branches are collocated in turn to form sixty basic units, and they cooperate with each other in a fixed order to form the chronology of the stems and branches. Heavenly stems and earthly branches's invention had a far-reaching impact, and heavenly stems and earthly branches still uses it today, which is used in calendar, art, calculation, naming and so on.
Extended data
The Combination and Application of heavenly stems and earthly branches
I. Combination
The method of matching stems with branches is that the male stems are matched with the male branches, and the penis is matched with the female branches.
Starting from Jiazi, it is followed by Yi Chou, Bing Yin, Ding Mao, Chen Wu, Keith, Geng Wu, Xin Wei, Ren Shen, Gui You, Jia Xu, Yi Hai, Bing Zi, Ding Chou, Wu Yin, Ji Mao, Chen Geng, Xin Si, Ren Wu, Gui Wei, Shen Jia, Yi You, Bing Shu and Jia Shen.
Starting from Wu Jia, Yi Wei, Bing Shen, Ding You, Wu Shu, Ji Hai, Geng Zi, Xin Chou, Ren Yin, Gui Mao, Chen Jia, Yi Si, Wu Bing, Ding Wei, Wu Shen, Ji You, Geng Xu, Xinhai, Ren Zi, Gui Chou, Jia Yin, Yi Mao, Bing Chen and Ding Si.
The cycle of heavenly stems is ten, with ten hours, ten days, ten months and ten years as different cycles, which are repeated in an orderly manner and form a stable periodic law. The cycle of the underground branch is twelve, with twelve hours, twelve days, twelve months and twelve years as different cycles, which are repeated in an orderly manner and form a stable periodic law.
With the cooperation of heavenly stems and earthly branches, we created a cycle of 60 hours, 60 days, 60 months and 60 years, which was repeated in an orderly manner and formed a stable periodic law. Because the cycle of cooperation between stem and branch begins with heavenly stem "A" and earthly branch "Zi", people call this cycle with 60 as a process "Jia Zi".
Second, the application
1, used for calendar timing.
In ancient China, heavenly stems and earthly branches was mainly used to mark days, but also to mark months, years and hours. The twelve-year calendar was adopted in the Spring and Autumn Period and the Warring States Period, and the twelve-year calendar system was adopted in the Western Han Dynasty at the latest. At the end of the Western Han Dynasty, the official branch was used to record the years and months. After the Tang Dynasty, the names of the calendars of the Five Dynasties began to be marked with branches, and in the Northern Song Dynasty, the dates of the ten branches and twelve branches were combined with the calendar. So far, all the dates have been marked with dry branches. This is the official calendar (Jiazi calendar), which is a kind of solar calendar.
2. Used for ordinal number, rating and classification.
After the main ordinal function of heavenly stems and earthly branches was replaced by numbers such as one, two, three and four, people still used it as a general ordinal number. In particular, A, B, C and D can be used not only to list classified articles, but also to rate and classify things in daily life. In the nomenclature of organic chemistry, compounds with the number of carbon atoms 1- 10 are named after Rhizoma Dryopteris, such as methane (1 carbon atom), ethane (2 carbon atoms), propane (3 carbon atoms), etc ... Another example is ethylene (2 carbon atoms) and butene (4 carbon atoms).
3. Used in Confucianism, Neo-Confucianism, medicine, Feng Shui, Shu Shu and numerology.
In the theory of Yin-Yang and Five Elements, branches are divided into Yin-Yang, odd numbers belong to Yang and even numbers belong to Yin. A, C, E, G and N in the heavenly stems, and Zi, Yin, Chen, Wu, Shen and Xu in the earthly branches are yang numbers; The heavenly stems of B, D, Ji, Xin and Gui, and the earthly branches of Ugly, Mao, Si, Wei, You and Hai are all negative. On this basis, according to the theory of mutual restriction, the harmony, rise and fall, conflict and its birth and death of personnel are calculated.