Chinese and Vietnamese are super duper racist towards Japanese. When I still lived in America, I had a friend in San Diego who was engaged to a Vietnamese chick. My wife and I were visiting America and the four of us went out to dinner. We could not break the ice with her at all. Later when they got married, she laid down the law that she would permit him to watch anime, provided it was dubbed in English. He was like, "But the English acting sucks." She did not want that filthy Japanese language heard in her house. Funny because the Vietnamese language sounds like a goat choking on bubblegum. Japanese people don't seem to mind Chinese so much on a personal basis, but I have to say that the culture is completely inferior. They are crass, rude, arrogant, and can be pretty obnoxious. Several years ago, we caught a show on TV showing the problems with Chinese tourists. Men hopping the train cross guards after they go down to dash in front of trains. Women at a food stall helping themselves to dango on a skewer, not liking it, and handing the rest to the seller as if it was just a free sample. Parents just standing there as their child just climbs all over a statue. Etc etc etc.

Taiwanese are different, but it's because they are the smart people who were able to flee China as the US State Department handed the country over to the commies. Then the commies proceeded to line up the cultured, educated people in the streets and shot them in front of everyone.