Another interesting question is this can WSJN Cheng Xiao hold a conversation in Mainland Cantonese with Hong Kong Cantonese speaker like NCT Lucas or Loona Vivi or not? *Keep in mind Hong Kong Cantonese has some words that were taken from British English due to Hong Kong being a British colony*
In fact she is from Guangdong which most of the people there speak Cantonese. Even to this day we refer cantonese language or hong kong language as “guangdong hua” in mandarin.