《元史·列传·卷三十六》
元振说： 宋朝权臣当国，赏罚无一定规章，对有功者往往设计排斥，所以将士们离心离德；且刘整不是南方人而居泸南要地，其形势与李全何异。刘整表示愿降，无可怀疑。 
元振曰： 宋权臣当国，赏罚无章，有功者往往以计除之，是以将士离心；且整本非南人，而居泸南重地，事势与李全何异，整此举无可疑者。 
Yuan Zhen said: The minister in power in the Song Dynasty is in power, and there are no fixed rules for rewards and punishments. Those who have made meritorious service are often designed to be excluded, so the soldiers and generals are alienated; Liu Zheng is not a southerner but lives in the important place of Lu'nan. The situation is no different from that of Li Quan. Liu Zheng expressed his willingness to surrender, which is beyond doubt.