Cantonese remains alive and well among the city’s community of YouTube stars, despite fears the language is in decline due to the increasing influences of the mainland, cultural commentators say.

This Hongkonger, also known as Siu Hing-fung, has been branded a classic ‘toxic boy’ (duk naam) – a derogatory term used to describe post-90s youths – because of his nerdy appearance. But in a recent ...