In all fairness, according to the article, the Chinese in the movie were apparently part of a coalition of countries (including Russia) that invade the US…on the other hand, all I’d seen and heard of the movie so far (including behind the scenes footage and ads) seemed to feature China pretty exclusively.
I can’t help but wonder if the “coalition” element was another addition in editing—some exposition that it’s a multinational invasion, but it just happens that the invasion sector the film takes place in is under North Korea’s jurisdiction, and we just happen to never see any other invaders. Maybe having someone from “high command” screaming over the radio in Russian, too. Stuff like that. If so, it’d be at least kind of clever.