King Han's Favored Little Princess

In her previous life, she was Liu Xuanya, the charming lady of Kou Chen Company. She was engaged to her father's partner's son Li Mingyu since childhood, but she didn't expect that Li Mingyu actually liked someone else and kept it secret from both parents. Later, he abandoned her at the engagement party to welcome his Bai Yueguang home, and Bai Yueguang framed him and said that he caused her to have a miscarriage. Bai Yueguang hired someone to hit her to death. She was unwilling to give up her soul. Traveling to another world, she became Murong Xuanxuan, the legitimate daughter of the Duke of Zhenguo, and married Shangguan Han, the uncle of the current emperor. This cheap husband doted on her to the core and made no sense in matters related to her. The emperor turned out to be his fiancé Li Mingyu in the previous life, and the imperial concubine was Bai Yueguang in the previous life. They started to fight each other when they met. What should they do in this life?