The paper used for printing banknotes is Sichuan paper, which was discovered by the official in charge of banknotes. This kind of paper is bright and white, which is very durable. The process of paper is also very complicated, and it is generally difficult to forge, unless counterfeiters can get Sichuan paper, which is forbidden to buy, which greatly limits the behavior of counterfeiters.

There were many patterns on ancient paper money, just like today's paper money, and the printing process was very complicated. The patterns of paper money include houses, flowers and birds, figures, etc., or with famous calligraphy and painting. Most of the banknotes in the Qing Dynasty are printed with dragons, and the pictures are very complicated, so it is difficult for counterfeiters to copy them successfully.

The earliest paper money in ancient times was issued by the people, but the ancient paper money must be officially recognized when printed and used. The official will record the money received in the passbook, and you can use it only after you sign it. In the process of issuing paper money, the court will leave a seal for each provincial and county bank, and the people will leave another seal when they use the money. Although the procedure is complicated, it can prevent fraud.

There were too many counterfeiters in ancient times, so the government should change paper tickets in time. If you want to change the paper ticket, you have to change the floating board and reprint it. The printing of paper tickets also has certain requirements. Some are printed with wooden blocks, and some will be replaced with copper plates. Generally, the service life does not exceed one year.

Cryptography is a method to prevent authenticity in Qing Dynasty. The password replacement speed is particularly fast, and the anti-counterfeiting effect is also very good. Many banks change their passwords several times a year, which can perfectly prevent fraud.

There are many ways for modern people to distinguish authenticity. Sometimes they use money detectors, sometimes they touch them with their hands, and sometimes they look at the security line in the sun. There are many ways. In ancient times, many people didn't have the skills to distinguish the authenticity of banknotes, so they set up money detectors in local governments, who were responsible for distinguishing the authenticity of banknotes, just like bank staff, popularizing relevant knowledge and charging appropriate handling fees.

Extended data:

The earliest paper money in history is called "Jiaozi", which appeared in Sichuan folk and is also the earliest paper money in the world! At first, people didn't care about paper money. At first, it was only used as a stub, which was very portable. Later, it was found to be very useful, so it began to be used for trading and gradually became popular.

After learning about this, the government of the Northern Song Dynasty began to carry out policy reform and printed and distributed a large number of banknotes, including Jiaozi, Yin Qian, Guanzi and Huizi. Of course, every era is inseparable from counterfeiting, and the Song Dynasty is no exception.

At that time, there were many counterfeiting gangs specializing in counterfeiting banknotes, and the number was large. In the Song Dynasty, only the first official institution in charge of issuing paper money in the world was established, called Yizhou Jiaozi Office, and all other printing institutions were fake.

At that time, the Song government was very upset. In order to crack down on counterfeit goods, it has imposed severe criminal laws to punish those who make counterfeit goods. Severe punishment and severe laws continued until the Qing Dynasty, which really put an end to forgery.

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