Why did criminals who were punished in ancient times put a sign on their backs? What was its function?

When we watch TV dramas, we often see ancient prisoners on death row with them before execution, and then many people come to watch them. Of course, there is another detail that some friends may have noticed, that is, before prisoners are taken to the execution ground, they will put a sign on their backs. So what does this sign do?

In fact, this brand is called Desperado, which originated in the Zhou Dynasty. In the Zhou Dynasty, this brand was called "Minggui", and its main function was to prevent the wrong person from being taken away or killed when he went to the execution ground. At that time, the name of the prisoner was written on this sign.

A red cross or red circle is often drawn on the name of a prisoner, so that this person can make it clear even when he goes to the underworld. Among them, there is another detail, that is, in the implementation process, everyone may have noticed that the sign will be pulled down and thrown on the ground, mainly to prove who killed people. This rule has been in use since the Zhou Dynasty. In the Qing dynasty, the sign behind it showed the prisoner's crime and proved that he deserved it.

In fact, this desperate card has another function, which is to warn future generations and tell people never to commit the same crime as criminals, otherwise, hehe, you all saw the end of this man. It can also be said that it is a lesson from the past, what is the role of killing chickens and monkeys! That's why they marched in the street before the execution, mainly to scare others and tell them to obey the law.

Well, do you know why people who were punished in ancient times put a sign behind their backs and then paraded around the streets to show them?