Their 0-Covid-Strategy (just as the one from NZ) has worked extremely well up to Delta.
I do believe the mRNA vaccinations are somewhat better than old-school vaccinations, though, and I certainly agree with others that it would be better to push mRNA much more. It's not "experimental" anymore, and those that claim so are clearly in the Dotard camp.
Now, with Omicron, it's my opinion they should shift towards "living with Covid", but that's entirely up to them.
With vaccines + available treatments against covid + the much less dangerous omicron (less doesn't mean zero) variant, the 0-covid-strategy imho has run it's course.
But till Omicron/Vaccines (ie, till fall 2021) it was clearly a superior strategy to the western approach (can't call that a strategy) "hey, let's do some half-arsed lockdowns that don't really work, but strangle the economy just enough, annoy everyone, and not lead anywhere, and still result in millions death"
So yeah, 2022 isn't 2020/2021 anymore, and I hope the PRC will eventually adapt. Guess they're having a good look onto other Asian countries like Singapore who now are "living with it" - super-high vaccination rate + omicron = looking good.