Where are you getting domestic consumption numbers from? Anecdotally, everything in China is pretty awesome right now, everyone is buying heaps of stuff.
Discussion
Take into account that the Chinese population is shrinking and aging, and old people consume less.
And dead people consume the least.
Consumption still seems to be increasing though.
The population is shrinking but it's not disappearing and it's also becoming much richer.
You could probably wipe out 90% of the Chinese population and still consume more than the rest of the world combined.
The remainder seems to be buying gold, since real estate is a mess.
Way more seem to be buying shitcoins than buying gold.
Side note: real estate is intentionally being demonetized.
Especially real estate in Japan and the US.