When is the lunar year and the solar year? When is the vernal equinox when the sun shines on the moon in a sunny year?

Refers to the combination in which heavenly stems and earthly branches is negative or positive in the calendar.

For example, Jiazi Year, Bingyin Month, Jiazi Day and Bingyin Year are the four pillars of pure yang, that is, when the sun shines in the Yang year; The year of B-Chou, the first month, the second day of B-Chou, and the first day of B-Chou are pure yin four pillars, that is, when the moon is cloudy and the sky is cloudy in a cloudy year. There is no saying that yin divides yang. In ancient times, only time and instant were not accurate enough.

Ten-day-dried traditional Chinese medicines include A (ji ǐ), B (yǐ), C (bǐng), D (D (dīng), E (w ǐ), Ji (jǐ), G (gēng), Xin(xěn) and Ren (rén Among them, A, C, E, G and N are yang dryness, while B, D, J, Xin and Gui are yin dryness.

Neutron, Ugly, Yin, Mao, Chen, Wu, Wei, Shen, You. Among them, Zi, Yin, Chen, Wu, Shen and Xu are Yang branches, while Ugliness, Mao, Si, Wei, You and Hai are Yin branches.

When a year is sunny, the moon is sunny and the sun is sunny, it means that heavenly stems and earthly branches collocation is positive. The same is true of the genus Yin.

Extended data

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.

In addition, the way of timing the trunk and branch started at least from the lunar calendar, and was added to the yin and yang calendars formulated by various dynasties so far, and the two calendars were used at the same time.

The marking time of trunks and branches has been used in ancient China without interruption. Therefore, it is very helpful to learn history and it is easy to calculate historical time. Such as "Feng Wanzhen": "Xianfeng Gengshen, British and French Coalition forces invaded the White Sea." Xianfeng, the year of the emperor; Geng Shen, the year of dry support.

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.

The heavenly stems of A, C, E, G and N, and the earthly branches of Zi, Yin, Chen, Wu, Shen and Xu 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.

Symbols such as heavenly stems and earthly branches are endowed with rich and mysterious cultural connotations, which are important materials for understanding the thinking habits and lifestyles of ancient China people.

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