Hey hey, I know the novel you are looking for is "Turning a Rabbit into a Demon". It's about Liu Shui-qing taking in a stupid rabbit and nurturing it into a human form. Just as he was about to make his move, it was snatched away by someone else. The story of the stupid rabbit turning into the young girl Ren Yubai, fighting with the evil dragon for many years, and finally getting married with Shui Liuqing. The dragon wanted the rabbit to be his butler. It was very interesting, right? I hope you like my recommendation. Muah ~