It is because China has a meritocratic system.

Maybe. I would like to think that is true but i don't have much evidence.

I think what we can see provably is that China is investing in the development of STEM contributors at the primary school level through advanced degrees and the central government is directing the economy to spend huge amounts on the work that they do.

I'm very curious about this because even tho we need to preserve democracy, some elements of meritocracy also seem needed. Obviously as Xi's latest purges show, there is some politics to it as well, but China does seem to do a fairly good job of meritocracy in the bureaucracy.