I have also been to the wet markets in two Chinese provinces (Yunnan & Shanghai [not a province, I guess]).

At least in the most dense regions of China that I observed, the state definitely at least seemed to have the ability to enforce some form of effective mandatory social isolation. Even in rural areas, the government seemed to be able to project authority using tech.

Sure, their squat toilets are a mess but I don’t think that really reflects the technological capabilities of the state.