I see you think too high of yourself.
look, Samsung sends 700 engineers to Vietnam. They will teach how to operate the new factory that will produce displays for Samsung and Apple phones. Ok, display Factory is a complex thing, but garment factory? Or plastic tool factory?
If you contruct a machine that makes simple things but require hightech engineers to operate it then you made something wrong.
https://mobile.reuters.com/article/amp/idUSKBN20X08H
34,000 chinese nationals work in Vietnam.
I don’t think they are all engineers.