There is an idiom: biāo, also known as biāo. The original refers to going separate ways. The latter metaphors go their separate ways and do their own things because of their different interests and goals.
"Wei Shu Hejian Gongqi Biography": "Luoyang I am rich, I should go separate ways." From now on, you can go your separate ways. “
If you don't agree with each other, what does it have to do with the yangbi? What is a "stirrup"?
A stirrup is a harness. According to the Modern Chinese Dictionary, "the two ends of the horse's chew are exposed outside the mouth." ”

In the previous exhibition "Tracing Civilization - New China Henan Archaeology Seventy Years Exhibition" held at the Zhengzhou Museum, the two cultural relics on display were "stirrups".
This is the "stirrup" of the middle western Zhou Dynasty, which is placed on both sides of the horse's mouth, fixed the horse's leash (horse chew), and connected to the horse reins. Such a placement, may not be clear to everyone.
This is how the stirrup and the horsebit are matched.
These two horsebits are placed in the horse's mouth, with stirrups on either side.
This is a schematic diagram of a saddle of the Tang Dynasty, and we can find a "stirrup" next to the horse's mouth.
The left and right reins of the horse are connected to the stirrup, and people riding and driving are pulled by the reins to control the direction of the horse's head, thus controlling the direction of the horse's forward movement.
Before the invention of the automobile, horses had always been people's close companions and means of transportation, and people with some economic strength would raise horses, and people would travel or ride horses or ride horse-drawn carriages. For thousands of years, horses have been closely related to people's lives. Therefore, words, words, and idioms related to horses also abound.
Now, although the horse fades out of the lives of the vast majority of people, but the idiom related to the horse is still familiar to us, parting ways, we can feel the rider on the horse's back, a word is not harmonious, I pull the right reins, you pull the left reins, so the reins drive the "stirrup", the mow drives the horse's head, the horse's head hisses in two directions, the boy goes north, the little girl goes south, and from then on, two wide.