Originally Posted by
christep
Eh? HRPs can be used "at any manned immigration checkpoint". I'm not sure how that could possibly be stated more clearly.
You'll need a passport of some sort to leave (and a visa for wherever you are flying to if you need one on that passport) otherwise the airline won't let you board.
Let me just state this. The millions of HKers who have a HRP who go to China absolutely DO NOT take anything other than a HRP to enter China whether they're taking a bus through Shenzhen Bay, or taking
any non-stop flight from HKG to China, or train, or ferry, or whatever.
[And of course, they use a HKID to leave and re-enter HK.]