First, the currency of primitive society In the ancient primitive society of China, due to the development of farming civilization, not only the problem of food was solved, but also the problem of food and clothing was solved. At that time, the earliest cloth and silk products appeared, because every household had them, so they were also circulated as money. During the Spring and Autumn Period, the State of Qi minted a knife-shaped coin, which was named knife coin. Because of the constant fighting around Qi State, knife coins were circulated to other countries. Shells and coins were used as money in primitive society in China, and the history of shells as money can be traced back to more than 3800 years ago.
Second, the currency of feudal society After Qin Shihuang destroyed the six countries, he unified the Central Plains, established the first feudal dynasty, and unified the monetary system. Moreover, with the improvement of metal smelting technology in Qin State, metal currency appeared. There are two kinds of money in the Qin Dynasty, one is gold, and the other is copper coins, also called half-taels. From then on, it was established that all the circulating currencies in the past dynasties were metal currencies. Song Dynasty is a special period. Because the economy of Song Dynasty was extremely prosperous, it was not only inconvenient but also unsafe to carry a lot of metal with you, so the first kind of paper money was born in Song Dynasty, named Jiaozi.
Third, historical significance Money has played an important economic role in the history of our country. The existence of currency has promoted the development of world trade, thus promoting the country's economic prosperity. Moreover, the social mode of production has also produced different currencies. We can look at the economy, politics and culture of the era in which money is located through money, which is more conducive to our understanding of history.