According to legend, the origin of China salt can be traced back to the Yanhuang period, and the method of making salt with seawater was invented by Su Sha.

Therefore, Su Sha's family was also honored as the "Salt Sect", and a temple was specially built for him.

The method of extracting salt from seawater has been used to this day. Now people usually build a salt pan first, then inject seawater into the salt pan for evaporation and crystallization, and then collect the crystals produced by seawater for processing.