Zero Covid probably isn't going anywhere soon. China's convergence prospects will be greatly damaged by adhering to the policy for years to come, but apparently this is a price many people are willing to pay,.
What sort of convergence are we talking here? You mean the zenith of the nation or...?
I would say it is impossible to predict where the Chinese zenith will be. Its the sort of thing you'd realize decades after the fact but would be simply speculative to talk about now.
If China had not focused on treating covid patients, would the resources really be useful enough to outweigh not just losing more lives, but also keep in mind the global economy is not exactly in high demand mode right now either.
Sustain 6%+ growth with a 30 trillion economy to me looks like a pipe dream. There's not enough gdp in the world to drive growth like that. Forget poverty reduction at home, you need poverty reduction of the entire third world + make them captive markets slated towards industrialization while having China reap all the benefits. Then maybe you can sustain another decade(s) of extreme growth.
The world is entering a phase of bloc confrontation, this is a period where everyone will contract or at least be slowed down. To win, China just need to contract less than America, while maintaining a world leading tech sector that slowly sprints past the US one as US keeps isolating itself and driving away researchers due to political interference.