It used to be time-consuming and oil-consuming, with low output and high salt price. Thus, from the birth of salt, the royal family formulated the salt law.
brief introduction
In the Zhou Dynasty, officials in charge of salt administration were called "salt people". According to ancient records, when Emperor Yan (referring to Shennong), Su Sha was the first to make salt with seawater, which was called "Su Sha as edible salt" in history.
Li Zhoutian's Yan Guanren describes being in charge of salt administration and managing all kinds of salt affairs. Bitter salt and scattered salt should be used for sacrifice, special-shaped salt should be used for hospitality, and salt should be used for royal meals. Emperor Wu of the Han Dynasty enacted a salt law, monopolized official salt and prohibited private property.
The word "salt" originally meant "salt water boiled in a container". It is recorded in Shuowen that raw food is called brine and cooked food is called salt. Legend has it that there was a warlord named Su Sha in the era of the Yellow Emperor who boiled brine with seawater and fried it into blue, yellow, white, black and purple salt.