Emirates is having super cheap ticket available from PEK/PVG.
eg PEK/PVG-JFK/SFO/LAX via DXB 4100 Chinese yuan.
PEK/PVG-MUC/CDG 300-450 USD
and many more.
if u are not member of its Frequent flyer program, u can put ur miles to UA, all class earn 100% Redeemable miles, but no Elite qualify miles.
Personally, I think signup for its skywards program is a better option.