After Changing Her Marriage and Becoming a Stepmother, the Princess Raised a Baby and Tortured the Scum, so She Went Crazy.

[Daughter-in-law and concubine's house fight + twin births + marriage first, love later + being a stepmother] Mu Ningxi and her concubine Mu Yanyu were born as twins. In the previous life, Mu Ningxi's biological mother died early, and her marriage was casually assigned to the poor family's number one scholar who had just won the lottery. Mu Yanyu was promised to the noble Prince Xiang, and became the magnificent Princess Xiang. It's a pity that Mu Yanyu, a spoiled dog-meat dumpling, can't make it to the stage. Not long after he entered the palace, he treated King Xiang's children harshly, and was kicked out by the furious King Xiang. But Mu Ningxi's husband-in-law has been promoted all the way, and Mu Ningxi kindly wants to win over Mu Yanyu. However, Mu Yanyu threw a bucket of boiling oil down on his head and cut his throat with a dagger. In a new life, Mu Ningxi will pay back the heart-piercing pain that boiling oil seeps through her skin and soaks into her body ten thousand times! Mu Ningxi returns to the eve of her marriage. Mu Yanyu, who was also reborn, was planning to marry the top scholar from a poor family. Mu Ningxi happily agreed to change the marriage. She wanted to see if Mu Yanyu, this loser, could get married and rise to prominence!