Mirror, Korea, Three Kingdoms Period, 5th–6th century. Bronze, 11.4 cm. Brooklyn Museum, Gift of Dr. and Mrs. John P. Lyden, 2010.85.1. (Photo: Brooklyn Museum)

This thin cast bronze mirror has a perforated central boss from which to hang a cord. Framed in the center of the mirror are four mythical and auspicious animals: a dragon, a tiger, a deer, and a two-headed bird. The dragon, in addition to symbolizing the ruler, has the power to repel evil spirits and control natural phenomena such as floods and droughts. The tiger represents valor and courage as well as protection from disease. The deer is a symbol of longevity and friendship. The bird refers not merely to a prosperous future but to immortality itself, as the deceased might fly, symbolically, on its back to heaven.