Originally Posted by andrzej
I guess you missed this announcement:
The codeshare has started. AA is now codesharing on China Eastern flights from Shanghai to:
Beijing, 2x 320/AB6
Chongquing, 1x 310
Chengdu, 2x 340/737
Dalian, 1x 320
Shenyang, 1x 320
Shenzhen, 2x 320/321
Xi An, 1x 320
http://www.flyertalk.com/forum/showt...9&page=3&pp=15 
Glad to see MU has re-joined the AA fold (AA used to codeshare with MU on LAX-PVG). But unfortunately it doesn't appear to help the OP, since HFE isn't on the list. I was basing my info on
http://www.aa.com/apps/AAdvantage/Vi...msDetail.jhtml which currently doesn't list MU as a partner.
Note that you can earn NW miles (and even EQMs) on CZ, however. You should be able to earn DL miles, too. Not sure about DL MQMs.