Who really is this mr. Jiang? Why is he against baiye this much

Ikr. No matter how I kinda like suifeng and might want to ship their own relationship...but due to the fact of his bitchy acts, I really don't like him. He's a demon himself so y kill his own kind. I'm really waiting to know the story behind his acts

Yeah I wanted a relationship for them both too, but jiang is really sly and nasty I hope hell turn to better tho