None of the airlines listed above offers a decent FFP that's worth it's own forum. For the major carriers, there are often other airlines in the alliance that's worthy to bank the miles. For the regional carriers, I don't think enough flights are being taken by flyertalkers to the extent a heavy talk for group forums.
As Flyertalk being a heavy FFP/Miles discussion forum, I find a forum for China not needed. A sticky on FFP is more than enough.