I don't know a lot about how the 996 culture came to be but it makes sense to me that is you're a country that is heavily invested in manufacturing goods you co

I don't know a lot about how the 996 culture came to be but it makes sense to me that is you're a country that is heavily invested in manufacturing goods you could enforce something like this and it would equal a boost in goods produced. But once a large portion or eventually a majority of your exports are high skill knowledge based work (like programming) then the returns will diminish as has been reported many times over the years. This may just be a natural change as China shifts its core export.