《元史·本纪·卷九》
高丽国王王忄甚派遣他的大臣、署理秘书寺的朱悦前来奏告，他改名为 贝春 。
高丽国王王愖遣其臣判秘书寺朱悦，来告更名睶。
King Wang of Goryeo sent his minister and acting minister of the Secretary Temple, Zhu Yue, to report that his name had been changed to Bei Chun.