Complex sentence: Xi is himself considered a princeling; some also consider CCDI head Wang Qishan a princeling through his father-in-law, though the cohesiveness of the princelings as being a political faction with similar interests and policy preferences has not been well established.
Split into simpler sentences: Xi is himself considered a princeling; some also consider CCDI head Wang Qishan a princeling through his father-in-law. However, the cohesiveness of the princelings as being a political faction with similar interests and policy preferences has not been well established.