Song of Sun and Moon - is the myth of a man and wife from the earthly world turning into the sun god and moon goddess, and it is assumed that the association between the sun and moon from the celestial world, and a man and woman from the human world, originated from the yin-yang thought that the sun and the moon are associated with water and fire of the terrestrial world, and the female and the male of the human world. This mytheme has been widely transmitted in Korean mythology, from the myth of Jumong and the legend of Husband Yeono and Wife Seo of Silla, and the folk tale, Brother Sun and Sister Moon.