During the Sung dynasty, salt was made from the water of sea, pond and well, among which "sea-salt" and "pond-salt" were particularly important in the amount produced. The "sea-salt" was produced along the seacoast from the Yangtze river to Canton, and that produced in the Liang che and Huai nan areas stands first on the list of its output and was colled "South-East Salt". This article is to make clear the method of making and marketing of it. Although boiling of the sea-water was common method of salt-making, the processing of it had local differences. For example, ash, instead of sand, was used in some area for being poured sea-water in order to raise its density. On the other hand, iron pans, instead of bamboo pans, were used in other area for boiling. As the result of such differences, the salt was different in color (white or light yellow) according to their area in which produced. Monopolized by the government, the salt had to be bought and stored by the government agency which was called "ting chang" or "chien". "Ting chong" was for selling to the merchant and was founded in many places according to its neccesity, but "chien" was set up on the location where the storing of salt was particularly needed to meet local scarecity. In the Liang che area, the salt bought and stored by the "ting chang" and "chien" was sold directly to the merchant for marketing. This fact shows that these government agencies played a role of connecting the producer ana the consumer. In the Huai nan area, on the contrary, the function of buying and selling was separated and different agencies took charge of them respectively. This means that the producer was more separated from the consumer than in the case of Liang che area. Such difference in the function of the government agencies in both areas explains the reason why : (1) illicit salt-making was popular in the Liang che area, (2) merchant producer were so active in the field of salt-making in the Liang che area in contrast to the government initiative in the industry under the strict monopoly system in the Huai nan area.
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