That you cannot call capitalism any successful economic system. China proved that a protectionist model with colossal government intervention can successfully reduce poverty.

China proved that you can reduce poverty in spite of those things. There is precisely zero evidence that those policies have done anything to reduce poverty, and a mountain of evidence that those policies, in general, exacerbate poverty.

What do you think China did to reduce poverty?

I believe we mean "capitalism" as in capital is held by private owners in search of profit instead of owned by the state. Not necessarily free trade with other countries.

China has a sort of partial capitalism in that some big companies are 50% owned by the state.