The GP may have been pointing out that many people in China still have hard feelings over WWII atrocities. I have a Japanese friend who pretended to be Korean

The GP may have been pointing out that many people in China still have hard feelings over WWII atrocities. I have a Japanese friend who pretended to be Korean when she was living in Beijing because of the hostility she experienced. I think the most blatant hostility she experienced was when her cover was blown because her mother (who can only understand Japanese) called while she was in a cab. The cabbie heard my friend speaking Japanese, and because of that pulled over and made my friend get out.