They are low, but they are also lowering. If the US wants any chance at all, it needs to strike as soon as possible, probably from the ROK or Taiwan (or a trifecta including Japan). China wins by advancing faster and faster, becoming a country that surpasses European living standards without any of the imperialism or den industrialization, while having a military the US can never hope to beat. That means they can't let off the gas for likely decades.

It's not a bad thing, though. They work ~47 hours a week on average, and their living conditions are constantly rising. I assume this number will gradually fall as well as they develop more and more. It won't likely be a button press, even if they lower the working hours legally it will still be based on objective material conditions from developed means of production.