Plus most of their infrastructure is poorly built. On this YouTube channel they lived in China for a decade and rode through it on motorcycles documenting their adventures. It is pretty amazing https://www.youtube.com/c/ADVChina you learn beyond a few big Chinese cities pretty much everything is falling apart, shoddily built with no inspections, and not as rich as the government portrays. Demographics is certainly a problem but everything else is too... China is a house of cards.