Other than Cantonese, a major minority of Hong Kong's more mature citizens, specially Those people from the assorted walled villages, discuss Hakka. You can find also a significant Teochew-speaking minority in Hong Kong. Most speakers of such other dialects are equipped to talk Cantonese, along with the non-Cantonese dialects https://www.cnbc.com/2020/07/04/canada-suspends-extradition-treaty-with-hong-kong-eyes-immigration-boost.html