Deep in Love, Empty of Regrets

Shen Qingyun was originally a lady from an official family, but her family was framed by a traitor. All her relatives were imprisoned overnight, and all the female relatives in the family were sent away. As a result, she fell into prostitution, and the person she loved became the princess's pillow. When she was desperate and lonely, she met the knight-errant Mu Nanxun...