Yes, they exist. But that is another can of worms now, isn't it? Where are the asian humans from? Black people? Okay. Tanaris or Stranglethorn. Southsea pirates.
But the only analogy for asia is Pandaria, and the first time a human set foot on it was 4 in game years ago.
WoW doesn't really have it's own Akavir, Othard or Cantha.
Of course this is WoW so might as well say "fuck lore, gameplay first"