Is it better to speak Mandarin or Cantonese when traveling and shopping in Hong Kong?

Since the return of Hong Kong from 65438 to 0997, the recognition of Putonghua in Hong Kong has been greatly enhanced, and most Hong Kong residents have mastered Putonghua to a certain level. Most taxi drivers and salesmen can communicate in Mandarin.

So you can use Cantonese or Mandarin in Hong Kong.