What period of time did bartering and currency trading begin in ancient times?

Currency transactions originated 4,000 years ago. China has been using money for 4,000 years and was one of the first countries in the world to use money.? The earliest currency was natural sea shells. China is one of the earliest countries in the world to use money, including China is also the earliest country to invent paper money, the earliest paper money was the Jiaotzu, which was invented in the Song Dynasty.

Money is a product of the development of commodity production and exchange. Initially, human society lived a pure natural economy life, without commodities, without exchange. With the increase in productivity, gradually produced a social division of labor, both the emergence of surplus material goods, but also the demand for material goods, so there is exchange. First, it was an occasional exchange of goods, mutual exchange of goods, trading and retreat; followed by frequent exchange of goods, a more fixed time and place, more participants,

exchange of goods is more abundant. The frequency of exchange, resulting in some of the commodities we all need, or most of them can be accepted out of the medium of exchange can be fixed expression of the value of other commodities. These special commodities, often called natural money or commodity money,they do not yet have the full function of money, can only be regarded as the germ of money. The two types of money in the budding period took shape in the Neolithic period 7,000-4,000 years ago, which corresponds roughly to the age of Shennong, Huangdi, Tangyao, and Yu and Shun in the legends of ancient history.

China, as the first country in the world to produce money, was not only the earliest in the development of monetary transactions but also the first country in the world to invent paper money. From the goods and goods transactions to the goods and currency transactions experienced a long time, and eventually developed to today's mobile payment, can be said to have undergone a radical change.