《资治通鉴·后周纪·后周纪三》
戊辰，后周世宗对侍从大臣说： 各道盗贼很多，讨伐搜捕终究不能绝迹，是由于历朝另外命令使臣巡视检查，致使藩镇主帅、州守县令都不再努力。
戊辰，帝谓侍臣曰： 诸道盗贼颇多，讨捕终不能绝，盖由累朝分命使臣巡检，致籓侯、守令皆不致力。
In Wucheng, Emperor Shizong of Later Zhou said to his attendant ministers, “There are many bandits in all circuits and although we have always sent out emissaries to patrol and examine, we have ultimately not been able to wipe them out. This is because the governors of the circuits and the governors of provinces and counties no longer exert themselves.”