 "Dangui" was also called "dang-jeogori" (당저고리), "dang-jeoksam" (당적삼), or "dang-hansam" (당한삼).It is theorised "dangui" dates back to the Korean Three Kingdoms period (57 BC - 668 AD) when a clothing system of China was introduced to Korea.The letter, "dang" () refers to Chinese Tang Dynasty (618 – 907), so "dangui" may have been adapted from its clothing along with other ceremonial robes such as "hwarot" and "wonsam".