China is in serious trouble on a LOT of fronts.
Population collapse is only one.
Banking collapse is another problem they are facing. Credit crunch due to junk bonds used as collateral to issue more junk bonds for real estate ventures like an entire city of apartments....then due to bad social Credit scores people who are working lose everything due to not being able to pay bills or buy food....so people exit the banking systems altogether.
But dont worry....everything is fine in China....despite having no petroleum or coal or fuel of any sort.
The three gorges dam is also going to have to be torn apart and rebuilt as it's only capable of roughly a third to half of expected electricity generation it should.
Yeah....dont worry....everything is just fine and dandy in China
Then there's the military problems....they want a Coup against Xi Jinping.
Then there's the massive corruption with military equipment purchases and existing equipment that is incapable of working.