Xiangshan is located in the central coastal area of Zhejiang Province, surrounded by the sea on three sides, with a long coastline, a vast shallow sea beach area, an average annual seawater salinity of 30.8, long sunshine hours, rich wind resources, and excellent conditions for sea salt drying. It is one of the three major salt-producing counties in Zhejiang Province. Xiangshan has a long history of salt drying. In the Tang Dynasty, salt was fried by traditional methods. In the Song Dynasty, there were methods of scraping mud and pouring brine and pouring ash to make brine, and boiling and crystallizing. The Yuan people called salt drying "bo". Starting from the Jiaqing period of the Qing Dynasty, the board drying method was introduced from Zhoushan for crystallization, and the tank drying method was introduced in the late Qing Dynasty, which became a major change in the salt production process. After the 1960s, the flat beach drying method was successfully tested, new technologies were adopted, and machines gradually replaced manual operations, and the traditional salt drying technique finally withdrew from the stage of history. It uses seawater as the basic raw material, and uses the seashore beach and its salty mud (or artificially made mixed ash soil), combined with sunlight and wind evaporation, and makes brine through manual labor such as pouring and pouring, and then naturally crystallizes into raw salt through fire frying or sun drying, wind energy, etc. The entire process has more than 10 steps, all of which are manual operations, but contain rich scientific and technological genes. It is an intangible cultural heritage with historical and cultural value. The main value of salt-drying skills is reflected in several aspects, including historical value, cultural value, technological value and economic value. It is a skill that seems simple in terms of processing technology requirements, but it reflects human wisdom. At the same time, it is related to factors such as climate and season, and is natural. It is a necessity for people's lives, an important raw material for industrial use, and an indispensable part of scientific and technological progress. It also involves people's employment, regional industries, and social and economic benefits. Information source: Ningbo Cultural Center (Ningbo Exhibition Hall Ningbo Intangible Cultural Heritage Protection Center) (No pictures yet, welcome to provide.) Information source: Ningbo Cultural Center (Ningbo Exhibition Hall Ningbo Intangible Cultural Heritage Protection Center) (No pictures yet, welcome to provide.)