《资治通鉴·隋纪·隋纪一》
原陈定州刺史吕子廓占据山洞，不接受隋军要他投降的命令，于是周法尚率军打败了吕子廓并杀了他。
定州刺史吕子廓，据山洞，不受命，法尚击斩之。
Lu Zikuo, the former governor of Chendingzhou, occupied the cave and refused to accept the Sui army's order to surrender, so Zhou Fashang led the army to defeat and kill Lu Zikuo.