The original "Jiaozi Store" depositors delivered the cash to the shopkeeper, and the shopkeeper temporarily filled in the amount of cash deposited by the depositors on a paper roll and then returned it to the depositors. When the depositor withdraws the cash, he pays the shopkeeper an interest of 30p, that is, he pays a storage fee of 3%.

This kind of paper voucher that temporarily fills in the deposit amount is called "jiaozi". At this time, the "jiaozi" is the deposit and withdrawal voucher that needs the approval of public and private directors. This time is a check, because it plays the role of a check.

With the popularity of "Jiaozi", there have been shops set up by merchants to specialize in "Jiaozi", and it is necessary to pay a storage fee to use the exchange. However, some businessmen are mercenary and abuse customers' money, which leads to disputes.

So around shunfenyuan 1005, the prefect of Yizhou (that is, Chengdu) reorganized all the "Jiaozi" shops and unified more than ten wealthy businessmen, but there were still some disputes.

During the Shengyuan period in Song Renzong, Jiaozi was changed to be monopolized by the local government, and private ownership was prohibited. Establish Yizhou "Jiaozi Service Office" and issue "Guanjiaozi". There used to be a small street called Jiaozi Street by the Chengdufu River. It is said that it used to be jiaozi Street, which used to be the gathering place of jiaozi shops, but it was renamed because of its homophonic sound.

Extended data:

In the Northern Song Dynasty, Jiaozi printed bronze coupons and wrote "Treasure of the Great Song Dynasty" and "Treasure of the Great Song Dynasty" for Song Cheng. The forger was beheaded, and the captor was rewarded with silver for ten passes.

The words "the first year of Tiansheng", especially the words "the most popular paper money in the Song Dynasty", show that it is an out-and-out paper money, but it was really only used as a check before it was officially issued, in the early stage of the development of Jiaozi, because it can only be used if it is exchanged.

The appearance of "Jiaozi" facilitates business contacts and makes up for the shortage of cash, which is a great achievement in China's monetary history. In addition, Jiaozi, as the earliest banknote issued in China and even in the world, also occupies an important position in the history of printing and printmaking, which is of great significance to the study of printing technology of ancient banknotes in China.

Baidu Encyclopedia-jiaozi