Earlier quoted context omitted.
Why do you say China is unstable? The US is talking about starting a war, had government shutdown issues recently, and has a president that is abrasive on foreign affairs. UK is dealing with brexit. China may have the issue with HK recently, but to an outsider, they look more stable. Of course, something like Japan or Australia seems better, but China isn't a terrible choice.
> Why do you say China is unstable? It's now a dictatorship, with a single man ruling for life. The history of dictatorships shows, for fundamental reasons, stability in the short term and chaos in the medium. (The fundamental reasons include not being able to back away from bad decisions, eliminating competent rivals, and as a result bumbling into crises that seem to escalate themselves.)
This is a cartoon take on China. Yes, China is led by a fairly Leninist party structure in nominal terms, but in terms of management China is relatively decentralised. Politically but in particular fiscally regional and local authorities manage day-to-day operations with significant leeway depending on the region, anything else would be unfeasible in a country with 1.4 billion people.
The bureaucratic nature of the Chinese state (which is really thousands of years old) makes comparisons to Western strongman dictatorships impossible. There's a reason the communist state has survived Mao, market reforms under Deng and now Xi, and it's not because it's run by some big brother figure who gets assassinated and then everything collapses.