As soon as things are much more complicated now, reverse engineering in hi-tech sector might be just a little easier than building own product.
These Russian engines is a good example. They are absolete ‘70s tech and Chinese still unable to reproduce it just like they couldn’t build it from kits they got earlier so they switched to buy it assembled.
Reverse engineering is a form of copyright enfringement of intellectual property. China and India never invent anything, they copy everything, they steal anything that they can get their hands on, be it computer code or jet engines. Outsourcing will kill the outsourcer.