I urge you to share the fact that Chinese Communist Party is infamous for using racism as a mean to strengthen their political grip. The Chinese nationalism brainwashing is much less effective when it comes to people of different race and skin tones thus people who aren't Han Chinese are often being heavily censored and treated as inferior being. You can read more about how the Uighur and Tibetan are being oppressed in mainland China, not to mention how racist their state media and people are towards Black people. I can't imagine how the CCP would treat ethnic minority in Hong Kong any better.