《后汉书·列传·南匈奴列传》
阳嘉二年，宋汉升为太仆，朝廷任命乌桓校尉耿晔接任度辽将军。
阳嘉二年，汉迁太仆，以乌桓校尉耿晔代为度辽将军。
In the second year of Yangjia, Song Han was promoted to Minister of the Imperial Stables, and the imperial court appointed Geng Ye, the Commandant of the Wuhuan, as the General of Liaodong.