China has roughly .4 AC units per person while the USA has roughly 1 AC unit per person. You are simultaneously arguing everyone should have an AC, and that China should stop expanding their usage of AC.

I'd argue everyone should have an AC if they need one (probably China needs more than they have.) But we shouldn't build any more fossil fuel extraction, people who need AC should figure out how to do it with batteries and renewable energy. (Nuclear is fine, if it makes sense economically.) We don't need population control, we just need to add sufficiently large taxes on things we want less of. AC isn't a thing we want less of, it's carbon emissions.