Well engineers and scientists already have solutions that are sadly not already put in place in China. A district heating company from the EU I worked for in C

Well engineers and scientists already have solutions that are sadly not already put in place in China. A district heating company from the EU I worked for in China replaced 19 coal plants with a single one in a smaller city in the north of China. So good engineering and management already exist for that, but the government owns all the existing plants and you can't replace them without their "OK". Same goes for cars. Chinese manufactured cars are not the most energy efficient, but mostly, there's lot of very old poorly made cars. Not the same very old as you'd get in other countries. Pretty horrible crap. The type of oil used there for cars is also decided by government standards. The current one is "not great".