Editing Cao Pi (section)

====Treatment of princes====
Since Cao Pi was still fearful and resentful of [[Cao Zhi]], he soon had the latter's fief reduced in size and had a number of his associates executed. [[Ding Yi (Han dynasty)|Ding Yi]], who was chief among Cao Zhi's strategists, had his whole clan exterminated as a result of assisting the latter in the past. In summary, under regulations established by Cao Pi, not only were the Wei princes (unlike princes of the Han dynasty) distanced from central politics, they also had minimal authority even in their own principalities and were restricted in many ways, particularly in the use of military force.