Syngman Rhee brought it upon himself by refusing to surrender to Kim Il sung and massacring Korean civilians for criticizing him.
Chinese are the opposite of conformist. Chinese are the most unruly and difficult to manage people in the world. In the absence of strong government, Chinese are like scattered sand. That is why the throne has been in contention basically nonstop since the Qin dynasty. Sun Yatsen: 《建国方略·民权初步序》:“中国四万万之众等于一盘散沙,此岂天生而然耶。”
There's plenty of people waiting in the wings. If there's one thing that China does not lack, it is politicians. The Politburo needs to create an environment where harmful actions are politically impossible, rather than an environment where harmful actions are rewarded. An individual successor is meaningless if their actions cannot be constrained to be beneficial. Nobody is perfect.
Japanese are actually conformist and that's why their throne has not been in contest since Emperor Kinmei. Just because Chinese and Japanese are both East Asians that use Chinese characters does not mean we're the same. In Japan they will act like they have an absolute monarch whether they actually have one or not.
Look how hard it had been to replace Wang Yi as Foreign Minister and it wasn’t for the lack of people wanting that position.
You want someone who will stand up to party elders. Someone who is simply groomed and does what they say is precisely what I’m worried about. Eventually they become captured by inner circle’s private interests and intrigue like court eunuchs did in the past rather than being someone who had to fight their way to the top and win acceptance like Xi did is ideal.
Of course China is less conformist than Japan as Japan is probably the most collectivist culture in the world. However Japan is also Confucian like China which has social rigidity and duties thrust upon citizens. All societies are conformist by nature as you need laws and social norms to keep it functioning.
With development it’s like the Yin and the Yang. Go too far in one area and you need the opposite to balance it out.
History is filled with countless great leaders who had one bad successor to ruin everything. They need to be ruthless and bold yet not fair and moral. It’s always been a very hard thing to find the right leader throughout history, more so in times of plenty and success, just as times of chaos, heroes tends to arise.
There are always trade offs in every political systems, and because of how China is structured it needs to be acutely aware of its disadvantages and be proactive and avoid them.
Do we know who might succeed Xi yet?