Originally Posted by Albatross01
i have lots of points with Skyteam and AMEX.
Sorry, but you don't have points with SkyTeam. SkyTeam isn't a frequent flyer program, it's an alliance of carriers that have their own programs (or a shared program like Flying Blue). Rules for redemption are specific to the program in which you have your miles.
There are several ways to fly JFK-PEK or PVG in Business class on SkyTeam carriers.
China Eastern JFK-PVG non-stop
Delta several NYC airports (LGA/JFK/EWR/HPN) - Detroit - PVG or PEK
Delta JFK-Tokyo Narita-PVG or PEK
Korean Air JKF-ICN-PVG or PEK
Depending on the program one may also be able to fly:
Air France JFK-Paris - PEK or PVG
KLM JFK-Amsterdam - PVG or PEK