The pandemic evolved today is mush more transmittable then before. The way they were doing that dose not work any more. China is still a poor country - per capital. They do the best they can. Can they do better? Sure!!!
without isolation, those people will most likely die earlier. the government maybe make a mistake in term of strategy: using right vaccine. But again they want to develop their own solution. Probably now they should move to right vacccine to mitigate the death. Even NK survives without vaccine. I believe the pandamic in China should be gone now.
It is hard to say wrong or right.