I think I understand this, but I'd appreciate confirmation from someone who knows more.
This person was born in Hong Kong. Father is a British citizen, mother is Hong Kong Chinese, and they are married.
The person has a full British passport and a Hong Kong ID card. Are they also entitled to hold a HKSAR passport? I thought they were not, but checking the information on the Immigration Department website I think I was wrong:
Immigration Department FAQ say that you can apply for a HKSAR passport even though you hold a foreign passport (Q8).
Assuming that a HKSAR passport is issued, would they then be entitled to a "home return" permit (or whatever it is called) rather paying a king's ransom for a China visa?