I must say that Hong Kongers are bullies who channel their hatred covertly with passive aggression and psychological manipulation, especially towards non-Cantonese speaking Asians. What I find to be especially revulsive is their irrational animosity towards mainlanders.
Britain gave you liberty, and what have Hong Kongers done with that liberty? Continue to act Chinese by speaking Cantonese and adhering to Chinese culture whilst indulging in Great Britain's rule of law, expectations of polite conduct, and the economic successes of capitalism. Now that Britain has handed over Hong Kong back to China, Hong Kongers beg and cry for independence since reunification with Britain seems no longer possible, just so they can keep speaking a CHINESE DIALECT, write to each other in CHINESE CHARACTERS (the Cantonese language has a few special characters, but aside from that their sentences are no different from Mandarin), and govern themselves just like how any person in Guangdong province would. Hong Kongers have transformed Vancouver and Richmond of British Columbia into bustling Chinese enclaves where in certain areas, there is more Chinese than English.
Now what does this mean? It means that Hong Kongers are just as Chinese as their mainland counterparts from a personality standpoint. They act with manners for the sole purpose of maintaining their "face" and nothing else, because they would not dare to act as uncivilized as their mainland brethren for the fear of losing face. Similarly, the greed and money worship in China is more or less the same in Hong Kong. Having already covered personality, on a sociological level, hong kongers act with a collectivistic mindset and there is an expectation to unquestionably defer to authority just like in China. This might be the case like anywhere else where you are a foreigner, but the hong kongers I have encountered show blatant favouritism towards their fellow cantonese speakers, as the last Hong Kong boss I had would frequently give his cantonese-speaking staff more responsibility, more hours, and more pay raise, while the foreigners who have far more seniority and experience are relegated to less desirable and prestigious positions.
Envious Hong Kongers are only content when they put non-Cantonese into a lower social class, in terms of wealth, status, and culture. Hence they will do everything in their power to ensure that you lose face and are brought down to a social standing that is far beneath them. They let their feelings of envy towards mainland Chinese fester as they indulge in the schadenfreude of causing mainland Chinese to lose face through public shaming.