I Tied Him Up, He Stole My Heart

Three years of mourning end and Wu Mengtian is handed a book of rules for proper women by her fiance's household. His mistress has been an open secret the whole time, and the people around her are waiting for the moment she is made a fool of. Her attempt to break the engagement is blocked. So she goes and takes a young cultivator, cold and good looking, and brings him back with her to answer every piece of gossip aimed at her. Women have no reason to tolerate men having multiple wives, she says. The cultivator turns out to be sharp and calculating, and starts feeding her strategies for the fights she is in. He is also the crown prince. She has now damaged the discipline he had spent his life keeping, and his answer is that the path is supposed to follow the heart, and in this life what he wants is her.