What's a Language Barrier? These shows don't know

Languages:  Mandarin, Korean

Yuan Jun Cheng's mother is from Korea... and I believe the character was raised there too? Anyway whether because he feels more comfortable or to spite his father, he speaks only in Korean (I mean his actor is Korean so that probably helps >.<). He speaks to his family in Korean as well as others, including Lin Xun who, for his part, although he understands and can speak Korean, only speaks Mandarin anyway (although he did speak some in the beginning before finding out Jun Cheng understands Mandarin perfectly.

Languages: English, Korean

Ok... I give this one a pass. She has no idea what their saying aside from the basics we all picked up after watching for a while. She just has semi-real life subtitles to help her. Don't remember what they hear though >.<

Languages: *deep breath* Korean, English, French, Spanish, Chinese, Nigerian Pidgin, German, Danish, Tagalog, Russian, and possibly more...

It isn't so much as these characters are multi-lingual (though some do know words in another language), but that society has advanced enough that everyone can have a in ear live translator. This opens up the possibility for this movie to have a dizzying array of languages, and boy do they take advantage of it it's beautiful. The show quickly, but thoroughly enough introduce you to this bit of tech just long enough for you to understand but not take away from the movie. It's done so well I love this use of future tech I can't gush enough about hearing THAT many beautiful languages in a movie. <3

Languages: Korean, English, Chinese

Placed in a POW camp with people who speak these 3 languages, two of our characters find even with the Chinese/Korean language barrier, they seem to actually understand each other?

Languages: Korean, Mandarin, Japanese, English

Basically the members of CROSSGENE each speak their native tongue. So we have everyone perfectly understanding; Korean, Chinese, Japanese, as well as English added by a little girl later.

Languages: Korean, Vietnamese(?)

This show tries to get away with futuristically wonderful ear translators that ONLY our reporter has.

HONORARY MENTION

... Modern Korean and past Korean might as well be different languages with how many new words have been added or other words have been changed. You might even need to make a dictionary with how much the Queen's vocabulary changed after Bong Hwan took over her body.