My mom went back last year. Said that on weekends theyd go eat in shenzen instead of hong kong because it was cheaper. And mainland chinese goes to hong kong to flaunt their money around with arrogance. Many are super rude as well. Also making real estate much much more expensive. Thus makes everything else more expensive. Not really worth going back.

Then you have the same problem as usa with anchor babies. Mainland chinese trying to sneak pregnancies in hong kong. To get government housing and what not.