《天工开物·上篇·作咸》
等到夏秋之交南风劲吹的时候，一夜之间就能凝结成盐，这种盐名叫 颗盐 ，也就是古书上所说的 大盐 。
待夏秋之交，南风大起，则一宵结成，名曰颗盐，即古志所谓大盐也。
When the south wind blows fiercely at the junction of summer and autumn, it can condense into salt overnight. This salt is called “Ke salt”, which is what the ancient books called “coarse salt”.