Book 25 by Xuanyue Tang Dou'er

The heroine dies of illness in the modern world, and her soul transmigrates into the body of a wealthy young woman in the ancient kingdom of Linyu. She is already a bride of the Qin family, but the original owner was strangled to death on her wedding night, and the heroine’s soul takes her place. This is a world with many more men than women, where women enjoy a higher status and can have multiple husbands, while men are responsible for their wives’ chastity. The male lead, Qin Xiaoxian, is her husband, but the Qin family matriarch often makes things difficult for her. With numerous people, including her chamber companion Mo Ziqi, gathered around her, how will she write her own legendary story in this world?