But i think you're missing the obvious point.
Given everything we know, have seen from this new virus, how contagious it is, its incubation period, etc. a virus that made its worldwide debut during flu season, and could easily in the earliest stages be confused with the flu in its various forms, the Chinese gov. actions to shutdown the country and isolate Wuhan, were almost prescient, as if they knew in the earliest days, as this virus spread, exactly what they were dealing with.
And with a new virus there were no widespread tests to ID victims. Yet China shutdown Wuhan immediately.
I think you've missed a lot of the reports about the early stages of the virus in China. The virus turned up in December in Wuhan. Doctors noticed that some flu patients were developing severe pneumonia. They ran tests and discovered that it wasn't any kind of normal flu. Ran more tests and found it was a novel coronavirus. Word was passed up official channels, and the national gov't didn't want this to get out. I think they expected this to be pretty containable like SARS in 2003 (8K total infections). Late December, a few doctors in Wuhan and others tried to get word out about the new coronavirus and possibility of an epidemic and they were silenced/punished.
China actually knew it was a novel coronavirus and dawdled with that info for 3 or 4 weeks. At the time they didn't know it was highly contagious, and apparently believed it was just linked to one outbreak at a fish market and could be controlled with contact tracing and isolation and medical treatment of a few hundred. They also apparently hoped that it related to animal transmission and human-to-human transmission would be rare.
A couple of things forced China's hand. One a case turned up in Thailand circa Jan 12, with links to Wuhan making it clear that this was contagious and had already spread pretty far. And Chinese New Year was set to begin when roughly 300M Chinese travel all over the nation and abroad.
That's only when the gov't kicked into high gear with lockdowns and such, around Jan 23, after they had known about the novel coronavirus for nearly one month. China acted too late in Wuhan and Hubei which is why there were over 60K cases there. The PRC did take strong controllability measures after that -- contact tracing, isolation, quarantine, treatment, masks -- which are pretty standard practice.
Here's some timeline:
mid-Dec 2019 -- a new type of pneumonia is reported in Wuhan
Dec 31 China reported to the World Health Organization (WHO) cases of pneumonia in Wuhan, Hubei Province, China, caused by a novel coronavirus
Jan 3 CDC Director Redfield spoke with China's CFDA
Jan 7 China sequences the COVID-19 virus genome
Jan 10 China shares the novel coronavirus genome with the WHO
Jan 11 1st COVID-19 death (in Wuhan)
Jan 11 CDC has the genome and begins preparing its (bungled) test
Jan 13 1st case outside China (Thailand)
Jan 16 German Co. has a COVID-19 test that the WHO adopts
Jan 20 the national PRC Gov't takes over
Jan 23 Wuhan is locked down
Basically, China wasted 3 weeks between when they knew it was a novel coronavirus and when they implemented a lockdown. Which is why they wound up with around 60K cases in Hubei (nearly 50K of those in Wuhan).
Much like the US, if they had acted just a few weeks earlier, they could have stopped most of the transmission. China delayed and dawdled and wound up with a big outbreak in Wuhan only contained by pretty drastic measures.