Desalination - Kaien (English spelling) Xiè yán

Japanese: 解塩 - かいえん（英語表記）Xiè yán

Granular salt produced from a salt pond in the southwestern tip of Shanxi Province, China. The salt pond spans the three counties of Xie, Yuncheng, and Anyi, measuring 5km north to south and 40km east to west. It can be said that the Yellow River civilization was supported by the salt produced here. The highly saline water from the pond is sprayed onto salt fields built around it, and the salt crystallizes using the strong winds that blow, especially from summer to autumn. After the late Tang Dynasty, as the salt monopoly system was established, facilities were put in place and salt workers were organized into groups called keiko. Demand in Henan and Shaanxi was met by dissolved salt for generations to come.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

中国，山西省南西端の塩池から産出する顆粒（かりゆう）状の塩。塩池は解，運城，安邑の3県にまたがり，南北5km，東西40km。黄河文明はここから産する塩で支えられたともいえる。高濃度の塩分を含む池水を周囲に作った塩田に散布し，とくに夏から秋に吹く強風を利用して結晶させる。唐代後半以後，塩の専売制の定着とともに，設備も整えられ，製塩労働者は畦戸（けいこ）として組織された。河南，陝西の需要は，後世まで解塩でまかなった。

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

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