I am not a sociologist, political scientist, or an economist. It appears that China is too big to govern and has become a diseconomy of scale. China has 160 cities with over 1-million people in them (US has 10 cities) and I think it's a miracle that the lights still work and they have running water. When you double the size of a plane it it becomes 4-times heavier (Observe what it takes to fly a B-52). The PRC seems…
China has historically been too big to govern. Few regimes over the last 2500 years have managed to hold any major portion of what is modern day China under a single rule for any amount of time. While the PRC may make token shows of aggression on the world stage, all of their arrows are really pointed inwards.
The trick is to find a "foreign aggressor" who's powerful enough to scare people into putting their internecine disputes aside, but not so powerful that they stomp your regime like a bug.