American Express Membership Rewards - Plz help with AX pts 2b use on MU China Eastern

I've been wrecking my little brains trying to find a way of using AX pts to get a round trip Biz class ticket on MU China Eastern...from LAX to PVG ( Pudong)
Shanghai...
Any creative / indirect way of achieving this ? plz help . :confused:
Many thanks in advance.

Look into this:
160,000 MR pts = 80,000 Starwood points (until Aug 31) = 100,000 CX Asia Miles = 1 R/T MU LAX-->PVG business class ticket