When I click on a Guild Member, the chat input box will display "PlayerName -RealmName -RealmName" and then I whisper to player, the system prompts: Not found online player named "PlayerName -RealmName -RealmName".When I hold down the SHIFT key and click on a Guild Member to invite him, the system prompts: you cannot invite the player from this realm.

Uhm, I need a guild to test that :D there is really twice the realmName ?

yep...

Can you just change the line 598 in the micromenu module to if not name:find('%u%U*-%u%U*') then to see if it still doubles the realm name ?

I tried but it still doesn't work.

The problem happens only with the Chinese locale ?

What about commenting the whole if block starting line 598 ... ?

According to the documentation this block should be useless

Sorry,I don't know.But I've changed the line 601 to name=name--.."-"..homeRealm. It is running correctly.

After I changed the line 601, I tried to whisper to myself and invite myself. Now everything is OK.