What was the earliest Jeff in ancient times?

The earliest use of literature to test is the tooth seal made by Zhou instead of the jade seal. There is such a record in "Li Zhouguan Chun Dian Rui": "Zhang Ya salutes and guards the soldiers." Zheng Sijia's note: "Answer blows with blows, if you send troops with bronze symbols today." Later, the amulet was no longer made of jade, but generally made of copper with relevant words written on it, which was divided into two parts, one for the court and the other for the war generals. When the imperial court needs to mobilize troops, the emissary must bring symbols to show his true identity, and the general will only accept the command of transferring troops after passing the verification of "He Fu". Because most of these military symbols are made in the shape of tigers, they are also called "tiger symbols". The new symbol of archaeological discovery is the bronze military symbol of Qin in the late Warring States period, and its text is as follows:

The symbol of Jia Bing is the King on the right and Xinyi on the left (place name, the conquered land of Wei). Anyone who (wears armor) and uses more than 50 soldiers, of course, knows Wang Fu and dares to do it. Although I don't know the rules, I will be beaten.

This inscription clearly shows that except for the special case of fire, all soldiers who send more than 50 people must use the bugle as evidence, and those who don't do so can't send troops. It can be seen that the military symbol, as a token of the transfer of troops, occupied a very important position in military activities at that time.

In addition to the tiger symbol used between the monarch and the general, there are also symbols between superiors and subordinates in the army. "Mozi's Order" states: "A general will make people keep his word. If the letter does not correspond to the number, Bo Chang (that is, a centurion, a grass-roots officer in the army) will stop it in order to listen to the general. " This symbol can't see the real thing now. Because there is a saying in "Zhuangzi" that "the symbol burns off the seal", it is estimated that it should be made of bamboo.