Because realistically the only reason you'd ever have a foreigner in a piece of media is either
1. Exotic cultures 'n shiet or
2. The fact that they are of X country is pertinent to the story, so it's a story about James Bond teaming up with a Russian to take down the Kremlin / using KGB expertise or something
The first is irrelevant in anime because Chinese culture (in the form of cuisine, clothing, language, art, poetry, etc.) is for the most part not exotic to the Japanese, even in its ancient form.
The second doesn't really work unless they specifically have a story about toppling China, which I don't think anyone really wants to touch.
That leaves the third, and it explains why every Chinese girl in anime nearly without exception has hair buns and wears a China dress on a daily basis, and just about every Chinese character can TETSUZANKOU a fucking planetoid.
I mean the only time you generally have foreigners in anime, period, is one of the above scenarios. That, or it's a story about postapoc (in which China generally is a sidenote) or international stuff (in which China is rarely anything but the demons because come on it's Japan it's like America writing about Nazis).>>154809919>>154809472>>154809204
Both the PRC and the RoC agree that there's only one China, the problem is that both sides insist they're the only China. Now obviously, one of them has the distinct advantage of a UN permanent seat, widespread international recognition, and far more economic / political / military might, so it's no wonder you rarely hear anything about Taiwan going for reunification.>>154816943
China isn't 'big' enough because there's rarely a need for someone to be Chinese. Someone being British is an excuse for him to be a dandy old man. Someone being German is an excuse for him to be Frederich III. Someone being Chinese...really gives nothing because a nip works just as well 99% of the time, be it cooking, martial arts, or nerd-ness.