《资治通鉴·唐纪·唐纪五十四》
加之，各镇既悬赏优厚，又刑罚严厉，所以各将领互相顾虑，彼此畏忌，都没有胆量率先发难，骄横的藩镇就是仗恃着这些，作为自己长远的计策。
加以购赏既重，刑诛又峻，是以诸将互相顾忌，莫敢先发，跋扈者恃此以为长策。
Additionally, the various towns both offer generous rewards and inflict severe punishments. So, the generals feel equal concern and fear toward each other. None has the courage to initiate an uprising. The arrogant vassal towns rely on this as their long-term strategy.