A friend and I went and saw the movie.Neither of us understand Chinese,though we think tjat although it was portrayed in a Cantonese spoken setting.,the female lead spoke Mandarin in places.That looks like Scott Adkins. a British actor and martial artist. He has done many films in Hong Kong and the UK, specialty being the bad guy.
Seriously , This is the best chinese animated movie trailer i saw in a while. And look at the likes ratio. Most of the chinese movie trailer don't get that much likes in youtube. They definately stepped up the game.Here's a Chinese trailer:
From what I can gather, this seems to be a prequel to the Legend of White Snake.