Historically, the center of scientific innovation shifted from Europe to the United States approximately a century ago, and is currently showing signs of transitioning towards China.
it doesn't seem like they're having any issue with it in the past 5-10 really. its not that hard to go to the mainland if you have science or engineering creds these days.
Except historically, China didn't propagate technology. It was used at the discretion of the emperor and held as a secret. They had moveable type before Gutenberg, but had a culture, government, and language that were all factors against its propagation. They had a navy second to none, but found the rest of the world not interesting (Confucian Conservatism is one theory) and dismantled it, nearly a century before Magellan's voyages. If anything, their knowledge leaked to the rest of the world as opposed to them leading it.
Today, China is playing Go with the world as their board. We have to start counting liberties on our groups; the late game is now.