Stop It, My Yandere Prince! I'm a Pro at Taking Down Scumbags

After Gu Yunluo, Crown Princess of the Eastern Palace, died, she was reborn in the body of her half-sister, Gu Nanyan, becoming the first person in history to keep vigil over her own coffin. What? She still had an unfulfilled wish? How come she didn’t know about it? If they want to make trouble in my mourning hall, they’d better ask whether I’ll allow it! If you can’t lift the coffin, then don’t bother. Just smash it on the ground and be done with it! Want to climb to the top over my dead body? How about a package deal: ruined reputation, infertility, and no children? Wait, what’s with you, my lovesick prince? I just want to quietly take down some scumbags and get revenge. Why are you everywhere I go? The lovesick Prince Fu Yanxue: Ever heard that it’s easier to invite a god than to send one away? You think I’m someone you can use whenever you want and toss aside whenever you please?