《史记·七十列传·卫将军骠骑列传》
这年秋天，卫青当车骑将军，从雁门出塞，率领三万骑兵攻打匈奴，斩杀敌人几千人。
其秋，青为车骑将军，出雁门，三万骑击匈奴，斩首虏数千人。
In the autumn of that year, Wei Qing became general of chariots and cavalry, led 30,000 cavalry from Yanmen out of the pass to attack the Xiongnu, and killed thousands of the enemy.