Five baht is the longest-used currency in the history of coins in China, and it is also a kind of currency with weight as the unit, which has played a certain role in the 5,000-year history of currency development in China.

Founding ceremony, the Emperor of the Western Han Dynasty, began to issue five baht in the Central Plains in five years, which was the first of its kind in the Han Dynasty. Until the end of the Eastern Han Dynasty, except for some minor changes in the middle, during the 400 years between the Western Han Dynasty and the Eastern Han Dynasty, five baht money ruled the whole country.

Five baht money laid the tradition of China's square hole. This small copper coin has an outer circle and an inner circle, symbolizing heaven and earth. The characters are cast in five baht, and there is a seal script under it.

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During the inauguration of Emperor Wu of the Han Dynasty, faced with huge fiscal deficit, currency manipulation by wealthy businessmen and tycoons, and floods in kanto region, the central government decided to carry out currency reform.

At the beginning of the fourth year of Yuanshou, new platinum and leather coins were adopted. The so-called platinum is actually an alloy of silver and tin. The raw material of the leather coin is the skin of a white deer raised in the Royal Shanglinyuan. It is one foot long and one foot wide, with colorful pictures painted on it, and it costs 400,000 yuan.

At the same time, half of Wendi's money was destroyed, and another three baht of money was cast. Private casting of money is strictly prohibited. Because white gold coins are overvalued, three baht is light, easy to be treacherous, and stolen casting is still prevalent.

Therefore, Emperor Yuanshou of the Western Han Dynasty stopped issuing three and a half baht in five years, and used five baht for the first time. Because he ordered counties to cast money in the fifth year of Yuanshou, the first generation of five baht in history was called five baht in counties or five baht in Yuanshou.

The appearance of Five baht was another major monetary reform after Qin Shihuang unified China. This kind of money has matured, with profiles on both sides and profiles on the back, while it was three baht before five baht appeared.

Some faces and backs have no inner and outer profiles, which are easy to be stolen and ground, that is, copper slag is ground and cast for profit. The casting of five baht money has greatly avoided these disadvantages, and this advanced shape has been gradually improved through long-term exploration.

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