I NEED HELP REMEMBERING A MANHWA

OKAY SO LET ME EXPLAIN!! Basically it’s a historical one, I think it’s a Chinese one. This girls transmigrated from earth to like back in dynasty time, she is really really strong and she fights all the spirit animals and whatnot, and no one can beat her, but she’s a little slow, and doesn’t really use her brain. she loves sleeping and can’t cook at all until she meets a guy who was fighting a demon outside her house the spirit bunnies made, than he asked for her to be her master, she said no until she asked if he could cooked, he said yes than she said okay to being his master only so he can cook for her, and that’s when the adventures begins, they meet the other dude aswell. I hope someone remembers it