Paper money began to appear in the Northern Song Dynasty, because merchants at that time mainly used silver in their transactions. However, silver is heavier. If it is a big business, the journey is long, and it is difficult to carry it with you, so paper money appeared, then it was called jiaozi. Since it is a silver certificate, someone will definitely find a way to fake it. How does the court crack down on counterfeiting? At that time, the government stipulated that coins could only be made of special paper, which is very similar to what we are doing now. This kind of paper is very smooth, which is completely different from the paper used by ordinary people in the market. It is specially used by the state to make jiaozi, which is not eaten by ordinary people, and is not allowed by the people. If found, will hell to pay.
Despite the use of special paper, there are still a large number of counterfeit money, so the government continues to improve anti-counterfeiting technology. Later, I gave up woodcut directly and adopted bronze seal. Although the manufacturing cost is relatively high, it increases the difficulty of anti-counterfeiting. After the new coins are issued, the government will also popularize some anti-counterfeiting knowledge to help people identify the authenticity of coins.