Be careful extrapolating based on China's current population and demographics. Too much of our armchair assessments of China's velocity is based on their meteoric rise on the backs of a historically large working-age population—a population that is now rapidly aging out of the workforce with nothing to replace it thanks to the one child policy. The US's demographics aren't stellar, but they're a lot better off than most of the developed world.
It remains to be seen how different 2010's China—with 90% of the population being under 60—is from 2050's China—with only 69% of the population being under 60.
It remains to be seen how different 2010's China—with 90% of the population being under 60—is from 2050's China—with only 69% of the population being under 60.
https://www.populationpyramid.net/china/2050/