String of cash coins (currency unit) in the context of "Traditional Chinese"

Fiat money is a type of government-issued currency, authorized by government regulation to be legal tender. Typically, fiat currency is not backed by a precious metal, such as gold or silver, nor by any other tangible asset or commodity. Since the end of the Bretton Woods system in 1976 by the Jamaica Accords, all the major currencies in the world are fiat money.

Fiat money generally does not have intrinsic value and does not have use value. It has value only because the individuals who use it (as a unit of account or, in the case of currency, a medium of exchange) agree on its value. They trust that it will be accepted by merchants and other people as a means of payment for liabilities.

Jiaozi (Chinese: 交子) was a form of promissory note which appeared around the 11th century in the Sichuan capital of Chengdu, China. Numismatists regard it as the first paper money in history, a development of the Chinese Song Dynasty (960–1279 CE). Early Jiaozi notes did not have standard denominations but were denominated according to the needs of the purchaser and ranged from 500 wén to 5 guàn. The government office that issued these notes or the Jiaozi wu (Chinese: 交子務) demanded a payment or exchange fee (Chinese: 紙墨費) of 30 wén per guàn exchanged from coins to banknote. The Jiaozi were usually issued biannually.

In the region of Liang-Huai (Chinese: 兩淮) these banknotes were referred to as Huaijiao (淮交) and were introduced in 1136. Still, their circulation stopped quickly after their introduction. Generally the lower the denominations of the Jiaozi the more popular they became, and as the government was initially unable to regulate their production properly, their existence eventually led to undesirably high inflation rate.