In my last job we literally had "classes" teaching us how to deal with Asian colleagues (specifically in China, but SK has the same culture) who would try to hide things and save-face at literally any corner possible; I remember my old boss' example of "when walking down a street in Beijing, if you ask somebody directions to a street that they don't know, they will adamantly indicate that they know and it's that way (a random direction) in order to not say they don't know the true direction. I didn't personally buy the classes and saw it as a generalization and racist (unsurprising, given the manager leading this class is born and bred in Poland; not exactly known for its diversity or.. external knowledge of the world or Asia; also the majority of the team had never left the country before so had no other viewpoint or angle to base these classes on), but it just confirmed my "trust but verify" approach to things.
The relevance of my story is that if I hacked or found some security issue with the Chinese colleagues, I was instructed to not in any circumstances communicate it in a way that may make them feel like it was an issue of theirs, that their code or infrastructure or whatever was hacked: it was _our_ fault for not telling them in advance that they can't do that specific action or whatever.