《北齐书·列传·卷二十一》
武帝西遁，昂率五百骑兵以加倍的速度追赶，抵达崤陕，没有赶上，就回来了。
武帝西遁，昂率五百骑倍道兼行，至于崤陕，不及而还。
Emperor Wu fled to the west, and Ang led 500 cavalry to chase him at double speed. He reached Xiao and Shan, did not catch up, and returned.