I think what Jonathan is highlighting is that the authorities have, in effect, eradicated the virus in Wuhan. I.e. even though the % people infected was possibly 0.2% of the population. The virus would die out naturally when the approx 70% of the population were infected (herd immunity). However, the Chinese government tested and isolated those infected/infectious, and traced their contacts (isolated where necessary) --- breaking transmission.
So it's a model of how to deal with the virus until you have a vaccine/at least not overwhelming your hospitals.