Five baht money was first cast in the period of Emperor Wu of the Western Han Dynasty. It went through Wang Mang's regime, the Eastern Han Dynasty, the Three Kingdoms, the Jin Dynasty, the Southern and Northern Dynasties and the Sui Dynasty, and was not abolished until the early years of the Tang Dynasty. It was used for 739 years. So what is the great charm of five baht to make it last forever? Emperor Wu of the Han Dynasty ordered the casting of five baht in order to completely solve the disadvantages of currency chaos and inflation that lasted from the end of Qin Dynasty to the beginning of Han Dynasty. At the beginning, five baht money was paid by counties, which was called county five baht money. However, the five baht money made in the county is short of weight and easy to be copied.

Emperor Wu of the Han Dynasty had to carry out reforms and created five baht, and one baht was worth five baht in the county. It didn't take long, however, to spend five baht. His actual value exceeded his own value and depreciated rapidly. Emperor Wu of the Han Dynasty had to order Shanglin Sanguan, who specialized in minting coins, to cast them. There are three famous officials and five baht in Shanglin, and the previous currency has been abolished, so it is not allowed to pass. This style of five baht money has always been used by Emperor Zhao and Emperor Xuan of Han Dynasty and won the hearts of the people.

The coverage of five baht money is centered on Guanzhong Plain, the ruling center of the Western Han Dynasty, radiating outward to the South China Sea, north to the Great Wall, east to the East China Sea and west to the Western Regions, which can be said to cover the whole territory of the Western Han Dynasty. And now it is found that five baht coins have been unearthed in Japan, North Korea, South Korea, Iran and other places, which shows the popularity of five baht coins. The five-baht coin in the Western Han Dynasty is modeled after the shape of the Qin Dynasty, with a round square hole and the word "five baht" cast on the front. The font is beautiful and slender, with a coin diameter of 2.5 cm and a weight of 3.5 grams. It is beautiful in appearance, moderate in weight and standardized in casting, and has won the favor of the general public. Therefore, the Western Han Dynasty established a monetary revenue and expenditure system with five baht as the core.

According to Hanshu, 28 billion pieces were made with five baht in the Western Han Dynasty. Shanglin three officials and five baht established the monetary standard. Coins are neat in shape and fine in workmanship. After testing, the copper content reaches 70% and the lead content reaches 20%. Reasonable proportion and stable physical properties. In the process of casting five baht coins, batching and casting are the two most important steps in the coin manufacturing process. The best of these two films is five baht, which has become the most successful currency in China's history. In the fourth year of Wude in the early Tang Dynasty, that is, in 62 1 year, five baht money was abolished, Kaiyuan Baotong money was cast, and five baht money began to withdraw from the historical stage. However, the five baht contributed a lot to the development of China's ancient economy.