My son was born in Hong Kong and now is 19 years old. He came here since he was five. He is a Canadian citizen holding a Canadian passport. He is planning to travel to Hong Kong and China in the coming months.

Questions are:
1) Can he apply for Hong Kong Permanent Identity Card and HKSAR Passport here in Vancouver.
2) If he apply for China visa, is it for one time only or for a specified period of time.

Thanks!