《宋史·本纪·卷四十五》
秋七月初四，蜀帅俞兴奏报沪州守臣刘整率所部士兵投降元朝，由俞兴构隙致变。
秋七月甲子，蜀帅俞兴奏守泸州刘整率所部兵北降，由兴构隙致变也。
In early July, military governor of Sichuan Yu Xing submitted a report to the throne, stating that the prefect of Huzhou, Liu Zheng, led his troops to surrender to the Yuan Dynasty, with Yu Xing himself conspiring and causing the incident.