Another question. In the wikipedia chart of Korean measurements, 자 is listed as a Korean foot, or 30.3 cm. But in the sentence I'm trying to translate, it sounds like it should be a measure of volume, not length. The paragraph quotes a recipe for how to make jehotang (green plum tang) from a 1715 book. First the herbs are boiled down. "식거은 반드시 백단가루 2전과 사향 1자를 넣는다." "After cooling, be sure to add 7.5g of sandalwood powder and 1자 of deer musk." Any ideas? Thanks.