You mean no business/factory is operating there anymore? If not, who is running the businesses, the people or robots?
Or what do you mean by "let's try China's lockdown"? Do you want your governments to be authoritarian/dictatorial, communist, to own everything, etc? What exactly do the supporters of Chinese style lockdown (unfortunately, I don't know what the country's lockdown style is) want?
The Chinese lockdown was a hit to the global economy.
It was a start of this crisis, now that Europe and the US is overgoing the same situation you are going to see a greater impact. We exchanged public health with an economic damage.