Will jet engines never be made in China? Don't bet against them. There's no guarantee that the legacy of the Cold War technology race will continue to subsidize western jet engine development.
There are reasons to think this subsidized moat will hold for a while: geared turbofan engines will deliver another increment in efficiency that passenger airlines can't ignore. Until that technology step is commoditized, the incumbent jet engine makers are relatively safe.
Lot technological development in China in the last two decades was result of US and European companies outsourcing manufacturing to China and most importantly, sharing know-how with Chinese companies.
I recommend the book "How China Captured Apple" by Patrick McGee
https://www.thewirechina.com/2025/05/25/patrick-mcgee-on-how...
This outsourcing development path for jet engines in China is not possible because ITAR.
https://precisionam.com/articles/precision-machining/itar-re...
https://aircraft.zone/navigating-the-rules-a-guide-to-u-s-ex...