Nothing? China is solving the problem on their own. They already make substantially less carbon per person that most of the west. If we want to be like China it's a simple proposition: be OK with Manhattan project level investments in power transmission from places that have lots of renewables to places that need renewables.

Climate is determined by total CO2 output, not per capita.

That’s a real problem, because China, and all the poor countries in Asia and Africa aren’t going to stop increasing their CO2 output per capita until they reach western standards of living.