I think that China's government is both more resilient and fragile than people believe. The CCP certainly seems to have the broad support of the masses, if not the support of the globe-trotting elite. With their highly centralized power and governance, they are well-positioned to tackle sharp crises like COVID, banking and financial crisis, protests and upheaval, etc. However, due to that false confidence and inflexibility, they are likely to kick the can down the road on all the long term problems they have (population decline, economic imbalances, too much debt, unproductive investments, poor consumption, etc)

The way they articulate their plan and attitude in the plenum seems to be a stay the course declaration. In that case, I would expect China to follow the path of many unsustainable models - to look strong and unbeatable for many more years than expected, then suddenly collapse when everyone least expects it.

In summary: I think China will stay the course and look like they are doing great for the next 5-10 years, hiding their internal deterioration with various measures, until the fundamentals just give out, maybe in the late 2020s. Maybe even earlier if they really ramp up spending in the military and trying to become self-reliant in all aspects of tech like semiconductors