Perception of Jangsoo(漿水) in Koryo(高麗) Dynasty

This study is focused on Jangsoo(漿水) in Koryo Dynasty. In Koryo Dynasty, the record of Jangsoo is appeared firstly in the Samguk Sagi(三國史記) Kim, You-shin Yeuljun(金庾信列傳). But the definition of Jangsoo is not existed in this book. For appreciating about Jangsoo in Koryo Dynasty, we must search about other medical books that was published in Koryo Dynasty. Jangsoo is frequently appeared in medical books in China. But the record about import of Chinese medical books is not existed on Korean history records before the King Hyeonjong(顯宗) of Koryo Dynasty. The first record about import of Chinese medical books is Taepyeongseonghyebang(太平聖惠方) in the King Hyeonjong. But the definition of Jangsoo is not existed in this book, either. So we can not know about the perception of Jangsoo in Koryo(高麗) people in this times. Zhenglei Bencao(證類本草) is imported in Koryo before being written Hyangyakgugupbang(鄕藥救急方). Thers is the definition of Jangsoo in Zhenglei Bencao(證類本草). The definition of Jangsoo is boiled water of fermented millet porridge. Looking at medical books published in the Koryo Dynasty, such as Hyangyackukeupbang(鄕藥救急方)·Biyebaegyobang(備預百要方)·Samhwajahyangyakbang (三和子鄕藥方), we can see the perception of Jangsoo in the Koryo Dynasty. When the Koryo people accepted the Chinese medical book's prescription of eating Jangsoo, there were cases that they changed Jangsoo to water or soybean juice. When applying Jangsoo to the skin, they used boiled water of fermented millet porridge as prescribed in Chinese medical books. The reason of changing Jangsoo to water or soybean juice is two. The first reason is that the boiled water of fermented millet porridge is not made easily in emergency situation. The second reason is that Koryo people thought that the efficacy of Jangsoo was the same as that of water or soybean juice.