I saw the preview last night before Doctor Strange, and while it was hilarious that there is a random White guy in China (Matt Damon), apparently there to save them from invading dragons ... I didn't get the impression at all that Matt Damon was *supposed to be* a Chinese guy, haha. His character is clearly a White man who is, during the events of the movie, located in China...
So in other words, he has a role like Raymond Burr in Godzilla, King of the Monsters?
Haha, haven't seen that masterpiece, but I would compare it to The Last Samurai.