Copper coins are used to make leaks on tea tables. The water outlet of the tea tray is made of copper coins, which can represent a round place and has a good meaning.
The moral of copper coins
It is an ancient currency. During the Spring and Autumn Period and the Warring States Period, with the development of commodity economy, the metal weighing currency that needs to be divided and identified in circulation gradually became unsuitable and was replaced by metal coins. Most ancient coins in China are cast in the form of copper alloy, and square hole coins are the most common ancient coins.
Because the issue time and circulation are much larger than other kinds of coins, the concepts of square hole money and ancient Chinese coins are often equivalent. Due to the close relationship between ancient copper coins and weights and measures, the circulation of bad coins is inevitable, and the weight of copper coins in past dynasties is very different. In order to facilitate understanding, we can calculate the theoretical standard weight of copper coins in previous dynasties according to the standard weight of previous dynasties.
The most common form of copper coins is small flat coins, that is, one penny, also known as flat coins. It is the smallest monetary unit in the era of using copper coins. Its diameter is about 2.4 to 2.5 centimeters and its weight is about 3 to 4 grams. There are two, three, five, ten, twenty, thirty, forty, fifty or even hundreds of thousands of dollars.