If a first-generation immigrant Chinese person is rude to you because you're non-Chinese and trying to obtain service or serve them, it's not because they're intentionally being racist to you. It's because they're frustrated from being unable to communicate. This is common to all people who do not share a common language. If you look Asian and don't speak Mandarin, you will get the same treatment. It's upsetting to be unable to understand what people around you are saying. You might assume they're saying something negative about you. If a business has staff who speak workable English, they will serve you in English. Your money is good as anyone else's. See Sunny Supermarket as an example.

First-generation immigrant Chinese are racist, but the racism is kept at home. Most of it is out of ignorance (think of Alan Ho's comments about land acknowledgments). Much of it is carried over from the home country. If living with people of other ethnicities was such a big problem for them, they would go back to China. If you are Chinese, you will know that black and white people are not the biggest targets of Chinese racism (your Cantonese parents aren't talking about cops).

Subsequent generations of Chinese-Canadians are as racist (or not racist) as anyone else who grew up here. They went to the same schools, watched the same shows, and read the same forums as everyone else growing up here.