《周书·列传·卷四十四》
乐炽闻知官军到来，将栈道全部烧掉，据守直谷，贺若敦的军队无法前进。
炽闻官军至，乃烧绝栈道，据守直谷，敦众不得前。
When Le Zhi heard that the imperial army was coming, he burned down the entire棧道, and defended Zhigu. He Ruodun's army could not advance.