It doesn't really matter what nationality or ethnicity you are, but if you communicate with the model in Chinese you might get better results from this model.

Then again, if they've misrepresented the strength of the model overall, there might be some other shenanigans with their results. The fact that their results show their model is worse than GPT-4.5 on 2 Chinese language benchmarks, while it's so much stronger on some of the others, is a bit weird.