What does eight-character six-in-one mean?

The Liuhe mentioned in the eight characters represents a relationship between the twelve earthly branches, namely, rats and cows, tigers and pigs, rabbits and dogs, dragons and chickens, snakes and monkeys, horses and sheep.

Zodiac Liuhe: a mouse and a cow, a tiger and a pig, a rabbit and a dog, and a dragon and a chicken. Snakes and monkeys are one. Horse and sheep are one, which is the six-in-one of the twelve zodiac animals.

Corresponding to Liuhe are six reds: rat and horse, cow and sheep, tiger and monkey, rabbit and chicken, dragon and dog, snake and pig.

Among the twelve branches of the earth, Zi Ugly, Yin Haihe, Mao Xuhe, Chen Youhe, Si Shenhe and Wu Wei are incompatible. The relationship of collision is: collision between children and noon, ugliness and non-collision, collision between Yin and God, collision between Mao and You, collision between Chen and Xu, collision between Si and the sea.

Extended data:

The earthly branch is the core content of ancient astronomy in China and the most important symbol of ancient astronomy in China. Astronomy comes from the concrete observation of astronomical phenomena. Needless to say, the earthly branch originated from the ancient 28 stars, another expression of the year.

The invention of trunks and branches marked the emergence of the most primitive calendar, which was used to calculate the age by numbers. In the later inheritance, the name of the dry branch was simplified to one word in the era of the Yellow Emperor. There are records of contrast in Historical Records and Erya.

According to documents, heavenly stems and earthly branches existed in Archaean, in which the twelve earthly branches represent twelve different months, seasons and festivals every year. The emperor's invention had a far-reaching influence, and it is still used in calendar, number of tricks, calculation, naming and so on.