Shiosho - Ensho

…A monopoly law developed during the Song Dynasty in China. There were two types of monopoly: the official sales method, in which government agencies sold to consumers, and the commercial method, in which sales were entrusted to merchants. In the commercial method, merchants were required to purchase government-issued promissory notes (such as salt and tea leaves) and, in exchange for the promissory notes, were given monopoly goods and a monopoly license at the production site, and were allowed to sell within a designated area. This monopoly method was called the promissory note method. …

*Some of the terminology explanations that refer to "Shiosho" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…中国の宋代に発達した専売法。専売の方式には政府機関の手で消費者への販売を行う官売法と商人に販売をまかせる通商法とがあり，通商法では商人に政府発行の手形(塩鈔，茶引（ちやいん）など)を買わせ，手形と引き替えに生産地で専売品と専売許可証とを渡し，所定の地域内で販売させていた。この専売方式を鈔法という。…

※「塩鈔」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報