《宋史·列传·卷一百七十七》
又说 ：宋代接受五代分裂割据的教训，削除藩镇，建立郡县城邑，虽然一时完全革除了尾大不掉的弊端，但是国家因此渐趋削弱。
程元凤，字申甫，徽州人。绍定元年进士，调江陵府教授。
He also said: The Song Dynasty accepted the lesson of the Five Dynasties and Ten Kingdoms' division and division, abolished the vassal towns, and established county and county cities. Although the disadvantages of being too large to be removed were completely eliminated for a time, the country gradually weakened as a result.