In the following year of 650, the governor of Anato (Nagato) Province presented the emperor with a gift of a white pheasant which was interpreted as an auspicious omen, leading to the era name being changed from Taika (literally, Great Change) era to the new era name of Hakuchi (literally, white pheasant) era.
翌650年（大化6年）に穴門（長門国）国司から白い雉が献上されると、その祥瑞を説明して白雉と改元された。