Dragonair is in Asiamiles. They are the only Asiamiles member not eligible for AA credit. I assume Japan Asia Airways, Deutsche BA and Qantas New Zealand (formerly Ansett NZ), which are all feeders for mainline oneWorld carriers are eligible for AA credit.

I heard some talk a while ago about mainland airlines like Air China and China Southern actively engaging the major alliances in discussions. All the mainland airlines are government owned, so the situation here is similar to Mexico where Aeromexico and Mexicana are in different alliances, yet code share on each other domestically.