From 0 to 9, which numbers are positive and which are negative?

Represented by positive numbers, it is 4, 5, 6, 7, 3, 2.

1 and 0,2,4,6,8 and 10 are all negative.

Using 1 instead of solid line for Yang and 0 instead of broken line for Yin, eight hexagrams become eight binary numbers, and the values of these binary numbers are Yang numbers, representing the relative amount of Yang in hexagrams. The dry divination is full yang divination, and the yang number is 7, the highest; Kun Gua is a full Yin Gua, and the Yang number is 0, the lowest. The figure shows the positive numbers of eight hexagrams. The yang number of hexagrams is the code name of hexagrams.

Yang adds up to 25, Yin adds up to 30, and Yin and Yang add up to 55. Therefore, the ancients said: "The number of heaven and earth is five out of fifty", that is, the number of heaven and earth is fifty-five. "Being a ghost is also a change". That is, the number of everything is just the number of heaven and earth.

Extended data:

Yin and Yang numbers and divination numbers are the basis of divination. The "image number" was originally included in the "magic number", and the earliest change was the magic number, which was complicated. It was difficult to distinguish between image number and magic number in Han dynasty, and it was not until Qing dynasty that a certain boundary was drawn. Generally, image number is regarded as a natural philosophy to explore the order of the universe, and magic number is regarded as a method to measure the fortunes of personnel. The number of objects and mathematics are mixed in later generations.

Deniers think that the "image number" as the mathematics school said deviates from the original meaning of Zhouyi and goes astray. Xu Chaochao, a supporter, thinks that the image number enriches the Yi-ology, which conforms to both the Zhouyi and the principle of the universe, and is a practical and scientific model of the universe. See "Imagism" and "Imagism".

Baidu Encyclopedia-Yang Shu