Step Sister's Son, Concubine Daughter Rises

Song Tanyin is the illegitimate daughter of the Song family. Five years ago, she was framed and abandoned by her clan. Five years later, she is sent to the Marquis's mansion to become the birth tool for the eldest sister. To protect herself, she endures and schemes, gradually winning the Marquis's heart. In the end, she avenge her greatest enemy and transforms into the respected Lady of the Commander of the Imperial Guard.