Earlier quoted context omitted.
That’s a breathtaking over simplification of their relationship. It’s a very complex and mildly antagonistic relationship while, yes, also having strong cultural and political influence. Your characterization is incredibly broad however and - taken as written - quite inaccurate
I've been living in Vietnam for over seven years now and spoken to countless locals about this and it's way more than mildly antagonistic.
But yeah, culturally speaking there’s a great animosity that’s true (while having strong ties as well, it’s a dichotomy)