Complex sentence: He further restricted the roles his other brothers had in the imperial administration; in addition, unlike princes of the Han Dynasty, under regulations established by Cao Pi, Cao Wei princes had minimal authority even in their own principalities and were restricted in many ways.
Split into simpler sentences: He further restricted the roles his other brothers had in the imperial administration. In addition, under regulations established by Cao Pi, Cao Wei princes (unlike princes of the Han Dynasty) had minimal authority even in their own principalities and were restricted in many ways.