The movie is pretty good. I dont see any "whitewashing" or whatever
Its just two strangers that got involved in some war maybe the Crusades. Then somehow for unknown reasons they just ended up in China by weird luck at the wrong place and the wrong time where the Chinese were having a long fued against asteroid/meteor monsters.
I think the movie is great. Even though the women drummers could have helped out during the battle instead of banging on their stupid drums