What is the principle of calculating things in Zhouyi?

Quite a complicated question:) I don't understand!

Principles of Zhouyi

Zhouyi has four basic contents: image, number, reason and industry. The content of science, first of all, is the philosophical principle. Please refer to the section of the Book of Changes for this part. The philosophical thought of Zhouyi had a great influence on later generations, especially its view on the formation of the universe, which later became the basis of China's world view. To reveal the contents of the Book of Changes, we must have a profound philosophical foundation.

Principles of astronomy. "The second part" said: "The ancient people, including the king of the family, looked up at the sky and looked down at Dharma. They look at the culture of birds and beasts, see whether the land is suitable or not, and take it far and near, which leads to gossip. " It can be seen that gossip is based on astronomical phenomena, geographical suitability and so on. Celestial phenomena refer to the movement of celestial bodies. When people in Han Dynasty talk about Zhouyi, they are often associated with astronomical phenomena, and regard astronomy at that time as one of the basic principles of Zhouyi. Besides the sun and the moon, the most obvious movement of celestial bodies is the movement of stars. Our ancestors lived in the middle and lower reaches of the Yellow River. According to modern astronomical knowledge, it is near the 36th latitude line. Polaris is located directly above the North Pole (slightly tilted). Standing at 36 degrees north latitude to observe Polaris, which is 36 degrees higher than the northern horizon and relatively stable. Draw a circle with a radius of 36 degrees on the celestial body, which is the visible sky. In the visible sky, due to the rotation of the earth, the rings on Sunday can be observed in different seasons. This ring is what the ancients called twenty-eight nights. Twenty-eight nights around the North Pole, forming the coordinates of celestial bodies, which is still useful for modern people's observation. It is centered on Polaris. Polaris, as the ancients said, is Beichen. People think that it is motionless in the center, and it is the Emperor of Heaven, sometimes called Taiyi and Taiyi. If you compare it to the center of a clock, its hands are the Big Dipper. Shu Tian, Tian Xuan, Tianfeng and Tianquan in the Beidou are like spoon heads, which are called Dou Kui or Xuan Yan, and Yuheng, Kaiyang and Yaoguang are like spoon handles, which are called bucket handle. Dou Kui's first two stars are in a straight line with the North Pole, and the whole Big Dipper revolves around the North Pole. Twenty-eight huts are like scales on the clock face, arranged on the great circumference of the celestial body. Dongqisu is the horn, health, surname, room, heart, tail and dustpan, just like the black dragon. The seven nights in the north are fighting, cows, women, emptiness, danger, rooms and walls, like turtles and snakes. The seven places in the west are Kui, Lou, Wei, Ang and Bi He, just like the white tiger. The seven nights in the south are wells, ghosts, willows, stars, Zhang, wings and birds, like Suzaku. The barrel handle rotates clockwise, and the sun and the moon rotate counterclockwise in coordinate observation. Coupled with the operation of the five elements of gold, wood, water, fire and earth, this is the general outline of the operation of celestial bodies. We are used to the 360-degree circle and regard the circle of Zhouyi as the movement of the celestial disk. According to the running laws of the sky, the earth, the sun and the moon, to be precise, a circle is 365V4 degrees. The ancients made calendars according to the movements of the sun, the moon and the stars. Among these documents, Xia is the oldest, followed by Yao Dian. There are some records in Guanzi in the Spring and Autumn Period, followed by Book of Rites and Moon Order. The Spring and Autumn Annals of Lushi in the Qin Dynasty also contains the Moon Order. During the reign of Emperor Wu of the Han Dynasty, Ba County fell into the calendar, pushed forward the front steps and carved it. In the first year of Tai Chu, Jiazi was designated as the winter solstice day to observe the cold and heat, and the famous taichu calendar was formulated. But these records are all after Yao. There is no literature to prove what the Fu era was like. We can only infer from heredity. Generally speaking, the calendar in the Spring and Autumn Period is an ancient seasonal calendar. The length of a tropical year is 365 1/4 days, and 7 leap months are inserted in 19 solar years. Because the age is 1/4 days, it is named calendar. This calendar was in the late Spring and Autumn Period, and it was already the most advanced calendar at that time.

According to the Han people, another principle of Zhouyi is to accept the armor. Judging from the hexagrams in the Book of Changes, it is a fact that people have recorded the sun with heavenly stems. However, it is more reasonable to say how to match gossip. About the principle of Na Jia, the books that can be seen now began to appear in Fang Jing's product algorithm, but Fang Jing did not explain it. His practice is to use eight diagrams to match the ten-day dry divination, use Arun to match the dry divination, use Yi Gui to match Kun divination, use Geng to match the shock divination, use Xin to match the cross divination, use C to match the people divination, use self-nature to match the divination, and use E to match the divination. Wei Boyang explained the principle of this collocation with the image of the moon in Qi. He said: "It was cool on the third day, and it was shocked by the west. It was closed on the 8 th and wound flat like a rope. After fifteen years of work, my body is full of oriental flavor. Help Chu and rabbit spirit, the sun and the moon are bright. If you watch the divination festival, the rabbit will vomit up. The seventh and eighth roads have been completed with low twists and turns. /kloc-after 0/6, I wrote "New Pingming". Before the people marched straight south, the last quarter was twenty-three. On the 20th, Kun Yi lost a friend in the Northeast. The festival is full of Zen and harmony, and the body is revived. I will fix Party A and Party B, and I will keep doing it. " He divided the change of the moon into six steps in a month. On the third day, Yueya first spit out as "cool"; The eighth day is the first quarter moon, which is called "the first quarter moon is as flat as a rope"; The fifteenth is the full moon, which is called "full"; Sixteen is that the full moon begins to fade; Twenty-three is the last quarter moon; Thirty is the moon; The first day is a new moon. According to the orientation of heavenly stems, hexagrams and eight diagrams match. The divination is like the first spit of the moon bud, and the moon appears in the west of the boxer at night, so the divination matches the boxer. The divination is like the first quarter moon, and the eighth jathyapple appears on the south side of Ding, so it matches Ding. All three paintings are real, just like the full moon. 15 jathyapple flashed in the east (side), so dry hexagrams with armour. The hexagrams become empty, just like the moon that began to fade on 16. On the morning of 16, the moon receded from the west (west), so the hexagrams are in harmony with Xin. Gen hexagrams are like the moon buds in the lower chord, equivalent to the moon on the 23rd. On the morning of 23rd, the moon receded in the south of C, so people should get C .. Kun's three hexagrams are all empty, like a dark moon. On the 30th, the bright moon was in the sky, and the east was not seen, so Kun matched B. In the first half of the month, the image was taken according to the formula of the moon rising, and in the second half, the image was taken according to the formula of the moon disappearing, and the principle of the rising and falling of the sun and the moon was taken. As for Ren, because in the north, the sun and the moon meet once in January in the north, so Ren is dry and Ren is Kun. Wuji is middle earth, Wuji is yang earth and Wuji is yin earth. Kande sticks hexagrams (Kansan), so Kande matches E; From Kun hexagrams (from three), so from yourself. The so-called "July 8 th Road has been completed" means that after July 15 th and 15 th, the full moon and the road to growth have come to an end. "Twisted low" means that the moon begins to darken and descend. "Unification after the 16th turn" means that it begins to decline again after the 16th turn.

Regarding Najia's theory, it should also be noted that Wei Boyang believes that "Li Kan" is the purpose of Gankun, that is to say, Gankun is the noumenon of Yin and Yang, Li Kan is the role of Yin and Yang, and Li Gan is the sun, showing detachment; Kun is the Taiyin, which is manifested on the ridge. Therefore, it is the day to leave, because it is the sun; Take Kan as the month, because Kan is lunar. According to the order of natural movement, every year is the beginning of the sun (actually, the earth goes around the sun once); The moon starts every month (actually, the moon goes around the earth once), so the sun and the moon meet once a month. The ancients applied this conclusion from observing astronomical phenomena to the Book of Changes, which was not invented.

You can also see the principle of the five elements theory in Zhouyi. Although it is not as strong as the Han people say, there are still some attributes of the five elements, such as soil is soil, yellow, soil loves crops, sweet taste and so on. This part of the content and the principles such as Chen's delivery and twelve statutes are not shown much in the hexagrams, so I won't introduce them in detail. If you want to know, please refer to Zhu Zhen's Yi Zhuan Tu.