I am getting the 3.05am flight from Shanghai to HKG and then departing 10 hours later to Vancouver.
I presume I can get my boarding pass in PVG and on arrival walk straight to immigration and out?
However is it possible to go to a lounge and drop off my laptop bag before going to Central?
I intend to do christmas shopping, can I check in another bag once getting to check-in again? I am flying biz class.

Thank you.