I was having this discussion the other day with someone...
you do realise that the boys will probably face even more backlash from Chinese fans if they decide to change it up and go full korean when the original song is in Chinese
Exactly. They were heavily criticized by Chinese fans for saying "Lunar New Year" in English on Bubble instead of calling it Chinese New Year and doing the greeting in Chinese. They are literally damned if they do, damned if they don't.
Honestly from what I've seen they are handling the comeback well. They seem to do be doing the Chinese version on two/three music shows and the Korean version on two/three music shows. If they don't want to hear the Chinese version on Music Bank then just wait for the Korean version on Inkigayo.