I don't think they have a skilled enough workforce, it is more mundane factory work.
They are already doing pretty advanced work. Everyone likes to think of China as a nation of factories producing goods designed in Europe, Japan, and the US. The truth is, they're developing quite a bit in house now, and are coming up incredibly fast in some sectors.
Look at companies like Huawei, they're the second biggest name in telecoms, and 90% of their R&D happens in China.
PetroChina is primarily staffed with Chinese geologists and engineers.
They are producing some amazing economists and financial managers, there are some brilliant minds working at ICBC and BOC...
Lots of software is produced in China now.
Quite a bit of Pharma coming out of China as well.
Home grown high speed trains, about to start building commercial jets, have been building their own military equipment for some time, have been launching (and shooting down) satellites for years...
I think they're pretty happy with the "factories that make stuffed animals" view that quite a few people in the world have of them.