while he and his soldiers were trying to cross the Yellow River from Baima (白馬; near present-day Hua County, Henan). However, two of Gongshi Fan's followers...

and Pei 429, 1.19: "二月，紹遣郭圖、淳于瓊、顏良攻東郡太守劉延於白馬，紹引兵至黎陽，將渡河。夏四月，公北救延。 ...公乃引軍兼行趣白馬，未至十餘里，良大驚，來逆戰。使張遼、關羽前登，擊破，斬良。遂解白馬圍，徙其民，循河而西。紹於是渡河追公軍，至延津南。 .....