Buan, the moon, is the transformed second sun and one of the most consequential beings in Bunun myth. When the ancestral hunters shot one of the two scorching suns in the eye, it fell, dimmed, and became the moon, giving the world its first night and the rhythm of day and dark. Rather than remaining an enemy, the wounded sun-become-moon made a pact with the people: it handed them millet seeds and taught them to plant, weed, harvest, and store by the changing shape of the moon, founding the lunar agricultural calendar for which the Bunun became renowned among Taiwan's indigenous peoples, with each lunar month carrying its own ceremonies and taboos. In thanks the Bunun offer the moon strips of cloth (tapaha) to wipe its bleeding eye, said to be visible as the dark markings on the full moon. The moon is thus the divine teacher of ritual and agriculture, the celestial author of the Bunun ceremonial year.