Strict prohibitions on foreign controlling interest in real estate, capital, and intellectual property, for starters.
This is protectionism and it has literally nothing to do with communism. Those are two absolute different things that can coexist or not coexist.
Same relates to your other points.
Your rhetoric is eerily similar to protectionist points of Nazi Germany, a very non-communist state that was obsessed with domestic control and protecting domestic capitalist with the proclaimed idea of "capital belonging to all people of Germany", as opposed to "evil Jewish cartels".
Simply trapping the capital inside the country speaks little of what gets to the workers. And if we talk communism, ALL of the capital is directly owned by the collective of workers. Which is not China.