I thought we wanted to prevent imposing unnatural time standards? "China manages somehow" seems nowhere close to that.

The point of the article is that timezones solve practical problems that will keep existing if you remove timezones - no matter if you do it globally or only in one large geographic region.

People have a use for a time grid that is relative to when they're awake, and the article I linked to goes into great detail why. Don't worry about telephones, people can still interact without them.