> Most Chinese people have no so much medical common sense

You are displaying your ignorance here, with this statement.

What is your quantification of "most"? Is it 75%? 90%? 95%? or 99%?

Do you know "most" Chinese people? There are 1.4 billion people in China. Can you even fathom that number? Have you ever been to China? Do you even speak the language to make such a judgment?

Let's be scientific here.

The reality is that only a handful of people need to get infected, and they will transmit the virus to others. At which point, it gets out of control.

The lockdown is necessary to limit the transmission. To starve out the virus. It needs human hosts to breed and to propagate itself. And this probably serves as a more cautionary approach, to tell people to maintain their distance away from others.

The likely result of this, is that the central China government will clamp down on wet markets, which may have been the breeding ground of such viruses.