《三国志·魏书·二公孙陶四张传》
张燕行为剽悍，动作敏捷迅速超过常人，所以队伍中都称他为 飞燕 。
燕剽捍捷速过人，故军中号曰飞燕。
Zhang Yan was brave and fierce, and his movements were agile and swift, far beyond that of ordinary people, so the people in his army called him "Flying Swallow".