Reborn, I'm Hounded by a Mad Princess

Also known as Reborn, I Take a Laid-Back Approach to Palace Scheming, but the Mad Princess Won't Leave Me Alone

Qin Mingxuan, the legitimate daughter of a general's family, is reborn alongside her younger sister. In her previous life, she was tormented by her stepmother and younger sister, and nearly murdered by her own sister. This time, her sister avoids entering the palace, but Qin Mingxuan insists on going in to become a princess. She only wanted to lie flat and live like a lazy fish, but somehow she becomes the darling of the entire palace. Her scumbag father kneels and weeps as he begs forgiveness, while the mad princess comes by every day to have her style her hair and clothes. How did this palace struggle turn into a victory just by taking it easy?