My Sister-In-Law Replaces the Champion? Reborn, I Marry a Cold-Faced Powerful Minister and Win.

[Double birth + marriage-swap brother-in-law + marriage first, love later + wife-chasing crematorium + miracle doctor vest + face-slapping and abuse] The substitute mistress wants to be with Li Paolu VS the dignified and powerful minister. The one who gets to the top first bows his head. - In his previous life, Suning Zhao made a mistake, spent all his dowry, and used all his connections to pave the way for the imperial examination and official career for the poor student Gu Changyan. Gu Changyan accidentally learned that the palace wanted Sun Ningzhao to marry Xiao Ci instead of his twin sister Suningyue, but she refused, causing Suningyue to die in depression. Little did they know that Gu Changyan had always cared about Sun Ningyue. Just because Suningyue gave him a few snacks and broken silver when he was young, he fell completely into paranoia and ignored Su Ningzhao's years of dedication and support, leaving her to die miserably amid endless humiliation and torture. The two had twins, and this time Gu Changyan took the lead in breaking up the marriage and would not marry anyone other than Suning Yue. She was forced to marry her brother-in-law and replace her sister as the mistress of the Xiao family. … As a nephew of the Queen Mother, Xiao Ci was a confidant of the Emperor, and held the power of the Royal Guards. He was the beloved of all the noble ladies in the capital. Even though he announced that he had a son and a daughter, he still could not stop the big families from wanting to marry each other. Su Ningzhao struggled every step of the way in the Xiao Mansion, fighting wits and courage with the two naughty children and Xiao Ci's adopted sister Bai Lian, and did not dare to relax at all. And Xiao Ci also discovered the clues about the marriage change, and kept it secret. As they got along, he became sincere and doted on Suning Zhao to heaven...