"Copper right" is a common metal object in ancient times, which was later commonly known as why?

Copper right, as the name implies, is the right of copper. Weight, commonly known as weight, weight and weight, is a movable object hanging on the weighing beam. That is to say, it is used for weighing, called weighing instrument. Since the emergence of private humans.

With the system, there is the concept of weighing, and with the prototype object, it becomes the most primitive barter tool. According to records, it first appeared in the Eastern Zhou Dynasty. In the Han dynasty, power was called fatigue, and the people called it "male old man"

Li Guangting, a Qing man, said in Volume IV of Xiang and Yi: "The shopkeeper called him a lucky boy and a just old man." . Weigh the level, the level is fair. "Han Shu" said: "Those who have power are baht, two pounds, jun and stone, so they are called things and know the weight." At present, many collectors in China are committed to the collection of copper rights. It is an important member of the bronze family. At the same time, it is also a precious physical object for textual research, research on history, politics, economy, culture and measurement, and can also prove the ancient weights and measures and the history of bronze ware development in China.

Ancient rights were made of copper, iron, pottery, porcelain and stone. The shapes are rectangle, silver ingot, cylinder, oblate, gourd and drum, as well as animals, fruits and vegetables, mice, monkeys, sheep and toads. The weight varies from 20g to 1300g. By the way, it is not only used as weighing instrument, but also used as mascot, ballast and so on. According to legend, when people move, they first move a heavy object (mostly ceramics and stones); When a house is built on the beam, it is hung on the beam, indicating "contentment"; It is also used to press the four corners of the curtain to make it flat.