This mirror, with its design of a dragon rising from waves, a cassia tree, and a pavilion, represents one of the major types produced during the Goryeo period. The design was influenced by Chinese mirrors of the Jin dynasty that depict the Tang dynasty emperor Minghuang (Xuanzong) journeying to the moon at the time of the mid-autumn festival. This fantastic journey was made possible by the power of a Daoist master and his magical bamboo cane. Upon reaching the moon, the two men met celestial fairies and divine maidens. The story was remade in popular drama and, along with many other aspects of Chinese culture, entered Korea through numerous cross-cultural interactions and diplomatic exchanges in northeast Asia that occurred during this period.