I don't think China's manufacturing dominance is threatened by this. The world is at standstill. Nobody is currently in a position to take advantage. Plus China is WAY more aggressive at containing this than anyone else. If anything this might bolster their manufacturing dominance.China is lying because their manufacturing dominance literally lies in balance.
How do I know, I work for a manufacturing company that I'm 100% positive you have in your house right now, that has significant operations in Asia and it has been speculated whether or not we ramp back up to the previous levels of production.
There's literally tens of trillions of dollars at stake. I would lie too.