The Marriage Exchange: Now I Marry for the Crown

Two sisters die and wake up years before it, with everything they lived through still in their heads. In the life they remember, Shen Wantang married a poor scholar who rose to become a powerful minister, and her elder sister Shen Mingxuan married Xiao Qingyuan, the heir of Prince Ning's household, and died there, after which Xiao Qingyuan gave up the world and took vows. In the second life Shen Mingxuan takes the scholar for herself. Her mother-in-law is on her constantly, the husband has contempt for women generally, and he ends up imprisoned over his own conduct. Shen Wantang goes into Prince Ning's household in her sister's place. The prince and his wife are good to her, while Xiao Qingyuan is cold with her from the start, since there is a girl he favours who has him well handled. Wantang takes that girl's schemes apart in front of him, more than once. He works out in the end what has been done to him and comes to Wantang to set things right between them, and she has no use for him. The thing she went into that house for is the position of mistress of it.