《元史·列传·卷四十九》
奕见兴相貌非凡，将甥女嫁他为妻。至元十二年，丞相伯颜伐宋，至黄州，兴随奕出降，伯颜授兴为千户。
奕使隶麾下，且奇兴相貌，以甥女妻之。十二年，丞相伯颜伐宋，至黄州，兴从奕出降，伯颜承制授兴千户。
Yi saw that Xing had an extraordinary appearance and married his niece to him. In the twelfth year of the Yuan Dynasty, Prime Minister Boyan invaded the Song Dynasty and reached Huangzhou. Xing followed Yi in surrendering, and Boyan appointed Xing as a commander of 1,000 households.