Mo Xiaoyan's Story of Conquering Demons

I, Mo Xiaoyan, am the number one demon master in the world today, determined to kill all demons and monsters. It's a pity that there are no demons for me to kill, and no ghosts for me to kill! I finally found a monster, but was beaten into a space crack. The unlucky one has become the third young lady of the general's palace, and will soon give it to a romantic prince...