To be clear, I'm not making accusations about Vietnam, I was just thinking about it and found it a little strange.
I can think of some fairly plausible reasons, but just because those reasons are plausible doesn't mean they're actually correct, so I was wondering if anybody had a more concrete historical and materialist understanding of the situation.
After spending a month in Vietnam, the locals are pissed at China's relentless aggression.
VS North Korea loving China.
It's probably that simple, but I'm far from an expert in this field.