was never pervasive
Proof?
It was a private tech industry thing, occurring within the relevant special economic zones. The same NATOpedia entry you posted: https://en.wikipedia.org/wiki/996_working_hour_system#Companies_involved
and the state cracked down on it years ago.
Proof?
Again, the same NATOpedia entry you posted.
All states don’t have it, actually. None of the Eurozone states do, for instance, and the US didn’t until 1971.
You don’t seem to be engaging with the content I’ve posted, but here’s one by Gabriel Rockhill anyway: How The Left Should Analyze the Rise of a Multipolar World, China, Russia & BRICS