Yanchi

　　Also known as Salt Lake or Silver Lake. Located at the southern foot of the Zhongtiao Mountain in Yuncheng City, by the Sushui River. It consists of Duck Pond, Salt Lake, and Nitrated Lake, covering a total area of 130 square kilometers. The salt produced here is made by sun-drying brine, resulting in a pure white color and high-quality taste, rich in various sodium and calcium substances. It is one of the nationally renowned salt production areas. The development of Yanchi Salt Lake dates back about 4,000 years, making it one of the oldest salt lakes in China. Legend has it that during the reign of Emperor Shun, people began harvesting naturally crystallized salt from the pools in summer. By the Spring and Autumn and Warring States periods, the basin had already gained fame. Liu Zongyuan described the scene of creating salt pans and channeling water for solar evaporation in his work "Jin Wen": “Ditches and ridges, fields and plots, crisscrossing and rotating, resembling farmland or gardens, with fish-scale-like patterns stretching endlessly, their boundaries beyond sight.” Today’s Yuncheng Salt Lake is an important source of various chemical raw materials in Shanxi Province. According to surveys, the salt reserves in the lake amount to 14.47 million tons, including 1.62 million tons of bluestone and 0.98 million tons of magnesium sulfate, bringing the total salt storage to 83.94 million tons. Currently, the annual production of six products, including table salt, sodium sulfide, and anhydrous sodium sulfate, reaches 360,000 tons. These products are exported to 24 provinces and cities across China, as well as to more than 10 countries and regions such as Sudan, Egypt, Iran, Iraq, Singapore, and Malaysia. Among them, the exports of anhydrous sodium sulfate and sodium sulfide account for 60% of the national total for these products.

　　1.62 million tons, 980,000 tons of magnesium sulfate, with a total salt storage of 83.94 million tons. The current annual production of six products—including table salt, sodium sulfide, and anhydrous sodium sulfate—is 360,000 tons. These products are exported to 24 provinces and cities across China, as well as to more than 10 countries and regions such as Sudan, Egypt, Iran, Iraq, Singapore, and Malaysia. Among them, the exports of anhydrous sodium sulfate and sodium sulfide account for 60% of the national total for these products.