In fact, the direct symbols are nine planets, but not all the stars, but a star at a specific time. With the difference of yin and yang numbers and time, there are different direct symbols. This is because in the movable tray, one house is in charge of ten hours, and after ten hours, it moves to the next house. Take 60 Jiazi as an example, that is, a ten-day symbol, whose ten-day head (Jiaziwu, Jiaxuji, etc.). ) It is marked in the palaces of the site.
In fact, the direct symbols are nine planets, but not all the stars, but a star at a specific time. With the difference of yin and yang numbers and time, there are different direct symbols. This is because in the movable tray, one house is in charge of ten hours, and after ten hours, it moves to the next house. Take 60 Jiazi as an example, that is, a ten-day symbol, whose ten-day head (Jiaziwu, Jiaxuji, etc.). ) It is marked in the palaces of the site.
The direct envoy is eight doors, but it does not refer to all the doors in general, but refers to a certain door determined at a specific time, that is, the door adjacent to the palace where the head is located in the middle of the ten-day period.
Heavenly stems and earthly branches's judgment of time is simple. Ten branches and twelve branches are made into sixty basic units in turn, and the ancients used this as the serial number of year, month, day and time, which is called "the discipline of branches and branches".
The two cooperate with each other in a fixed order, forming the discipline of cadres and branches. In ancient China, heavenly stems and earthly branches was mainly used to mark days, and also to mark the moon, year and time.
As early as 2697 BC, when the Yellow Emperor, the ancestor of China, founded the country, he was ordered to explore the qi of heaven and earth and the five elements (water, fire and earth in Jin Mu), and launched A, B, C, D, E, Ji, Geng, Xin, Ren, Gui, and Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei and Shen. According to the records in Five Elements of Justice, the main branches and branches were created after great efforts. Big scraping "takes the five elements of love and builds it with a bucket machine." Party A and Party B use the name of the day as the basis, and the name of the month as the basis. There is something in the sky that uses the sky, and there is something in the ground that uses the moon. Yin and Yang are different, so there are branches and branches. "
In the China calendar, the time for the moon to orbit the earth once (29.5306 days) is regarded as January, and the time for the earth to orbit the sun once (365.438+09 days) is regarded as a year. In order to make the average number of days in a year consistent with the number of days in the tropical year, a leap month is set up. According to records, in the 6th century BC, China began to coordinate the lunar calendar with the solar calendar by the method of 19.
Heavenly stems and earthly branches is a symbol designed by the ancients to facilitate the 60-digit system when building calendars. For ancient China people, the existence of heavenly stems and earthly branches was as simple as Arabic numerals. Later, these symbols were applied to maps, directions and time (time axis and space axis), so these numbers were endowed with more and more meanings.
The ancients (Yellow Emperor) observed Wang Shuo's moon and found that the two moons were about 59 days. 1February is generally more than 354 days (similar to the length of a tropical year), so the ancients got the concept of 12 months in a year. In the collocation diary method (ten-day dry), the yin-yang calendar was produced and developed in heavenly stems and earthly branches; It should be more mature in Xia, Shang and Zhou Dynasties.
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It originated from the observation of astronomical phenomena in ancient times and is a kind of "river map"
The river map and Luo Shu produced by astronomical observation became valuable things for the emperors of the three dynasties. Hetu and Luoshu are simple in structure and are one of the cultural cornerstones of ancient China. Liao Ping, a scholar of Confucian classics in Qing Dynasty, made many textual researches on The Book of Songs, The Book of Changes and The Internal Classic, and confirmed that the theory of The Internal Classic originated from The Book of Changes, and the mathematical theory of The Book of Changes was taken from Heluo.
The river map consists of five elements, five elements, yin and yang, and images of heaven and earth. The schema takes white circles as yang, sky and odd numbers; Black dots are yin, earth and even numbers. And the combination of heaven and earth and five elements, and the combination of yin and yang and five elements, so the schema structure distribution is as follows:
One and six * * * live in the north, because the sky is full of water, and the ground is 60%; Two and seven are friends who live in the south, because the land is second only to inflammation, and the sky is 70%; Three and eight live in the east as friends, because the sky is full of trees and the land is 80%; Four or nine live in the west, and gold is born because of the land, and the sky is 90%; Five and ten are in the same place and live in the center, because they were born in five places and the land is 100%. The river map is drawn according to the five-star season. Five stars, called five latitudes in ancient times, are five planets in the sky. Wood is called the old star, fire is called the twinkling star, earth is called the town star, gold is called the white star and water is called the morning star. Five elements of operation, divided into 28 dormitories. Because its orbit is not far from the sun road, the ancients used it to mark the sun. The five stars generally appear in the Arctic sky in the order of wood, fire, earth, gold and water. Each star has a 72-day line, and the five stars circle 360 degrees. It can be seen that the river map is drawn by the five-star sky, which is also the source of the five elements. Because before the winter solstice of 1 1 month every year, Mercury can be seen in the north. When the winter weather comes, everything is dormant, and there are only ice, snow and water on the ground. This is how the concept of water travel was formed. After the summer solstice in July, Mars was seen in the south. It was summer weather and the ground was very hot, so the concept of fire line was formed. At the vernal equinox in March, Jupiter appeared in the east. Just as spring came, plants sprouted and grew. The so-called "spring comes to the world to know the vegetation", and this is how the concept of wooden walking is formed. In September and the autumnal equinox, Venus appears in the west. In ancient times, weapons were represented in many ways to show the season of autumn war, and everything was old and withered, which led to Jin Xing. See Saturn in May, which means that the wet earth is in the long summer season, and the wood, fire and gold water all take this as the midpoint. Observing the four seasons climate change caused by wood fire and gold water from the ground, the concept of soil travel is formed in this way.