I'm the Real Princess, You're the Empress

Lin Yu, the genuine daughter of the Dingyuan Marquis Manor, was raised outside the family and met a tragic end after her return, framed by her adopted daughter and rejected by her mother. Upon rebirth, she vows never to repeat her past mistakes, leveraging the Empress's power to establish authority within the manor. After helping the manor avoid disaster, she successfully secures her match as the Crown Princess's wife and, under the guise of cooperation, successfully allies with the Crown Prince. Facing repeated schemes from her mother and adopted daughter, Lin Yu skillfully evades them, ultimately seeing the biased mother and daughter reap the consequences of their own actions. Lin Yu and the Crown Prince end up together; after the Crown Prince ascends the throne and passes away, Lin Yu takes over governance from behind the curtain, stabilizing the nation.