You mean to buy things only on certain place such china, only in china.

Lots of difference between CBDC and crypto people who are using and shouldn't be compared of. It's obvious chinese people will use it as it somewhat required/forced to them by their government.

I don't think bitcoin failed to work like that, even bitcoin doesn't have enough value as $5, it was used already to buy things, food and etc. few years after its release.