In many senses there's hubris in the western* view of China accomplishments: most of what western companies have created has had significant contribution by Chinese scientists or manufacturing, without which those companies would have nothing. If you look at the names of AI researchers there's a strong pattern even if some are currently plying their trade in the west.
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* I hate the term "western" because some "westeners" use it to separated what they think are "civilized" from "uncivilized", hence for them LATAM is not "western" even though everything about LATAM countries is western.
Really? How long has China been attempting to build their own jet engines? How long have they been attempting to build competitive CPUs?
History has shown withholding tech successfully keeps them at least a generation behind the west.
In some fields like CPUs they “make up for it” by just building larger clusters, but ultimately history does not show what you’re claiming. The only thing it shows is that we need to be even more diligent in protecting IP because a large portion of their catching up is a direct result of stealing the tech they were cut off from.
https://en.wikipedia.org/wiki/ACAE_CJ-1000A
https://en.wikipedia.org/wiki/Semiconductor_Manufacturing_In...
Huh? Did you read your own link? The jet engine that was shown at an aviation show as a non-functioning prototype in 2011, with hopes they'd have a functioning version by 2016, and in service by 2020 (it wasn't in service in 2020). Notice at the very top of your own article it says "still in development".
>CPU since 2000
That isn't remotely competitive, and at least a full generation behind.
Literally anyone can make a prototype jet engine. The metallurgy and process to make a functioning one is several orders of magnitude more difficult. Which is why... China still buys the vast, vast majority of their jet engines from Russia for military use. And their commercial passenger jets use engines from CFM.