This is because the place where salt was born prematurely in China is the distant Cubans in the middle and lower reaches of the Yangtze River. They were the first owners of saltworks and the first people in China who began to cure salt. Because there is the word "ba" in their names, people later called it salt, which became "salt bar".

In ancient times, China's land area was one of the largest in the world, and it was also a necessity for people's life. No one can live without salt, so ancient salt is also very important. Any ancient king paid special attention to salt. Because if you don't watch it carefully, many people will sell salt. In ancient times, only the imperial court could sell salt, and no private person could sell salt.

Although salt is small, it has a great effect. If it is controlled by private individuals, it will have a bad influence on the market and be very unfavorable to social stability. Official control will also stabilize at a certain level, and stabilizing the market will also stabilize society. The annual salt tax is an extremely important part of the national fiscal revenue and another important economic source for national development. Of course, no matter how the ancient kings controlled salt, there would be some salt merchants and salt sellers. The most important reason for this is that it is profitable to make a fuss about salt.

In some ancient works of China, we can also see the appearance of salt, and some ancient people also gave a good explanation of the role of salt, thinking that it also has the function of relieving pain and refreshing. But as far as we are concerned, there is almost no such influence, because the food we eat every day contains a lot of salt. If a person doesn't eat salt for a few days, he will surely become extremely weak.