I have no idea what this is, and I can't read Chinese. But I think this is one of the coolest original pieces of art I've seen of this type of character, y'know? It might be a version of the Oni, a Japanese mythological demon-ogre-thing
Fire Spirit by *thiago-almeida on deviantART. Potential primitive spellwarrior or variant kensai I am a massive fan of the use of energy flowing off a characters body and/or weapon and it forming into a shape, or just a smoke effect.