《资治通鉴·后周纪·后周纪三》
不如去掉王号，自动归顺王公，王公必定用天子的命令授于您节度使之职，与中原的侯伯等同，岂不尊贵荣耀吗？ 
曷若去王号，自归于王公，王公必以天子之命授足下节度使，与中国侯伯等夷，岂不尊荣哉！ 
"Why not abandon your title of King and submit to the Duke, and the Duke will certainly award you the position of Prefect of the Circuit by order of the Emperor, which will place you at the same level as the marquesses and earls in the Central Plains. Would that not be an honor?"