www.toureast.com has JL Biz special to HK quite often. Right now there is YVR-HKG for CAD$3700 until March 31, then you can just buy a ticket HKG to PVG. Not sure if they run the same special in the Summer.

I flew twice this year with a partner and both times we used 2 for 1 offer by Plat. AmEx, works out to be approx. $7000 for both. Once through AC (aeroplan Plat AmEX) YYZ - PVG, once through JL JFK - PVG.