After Rebirth, I Became the Mistress of the Hou Mansion

In her previous life, she was pushed to hell by her close relatives and died for her younger sister; in this life, she returned with full-level medical skills and family secrets, vowing to make all betrayers pay with their blood, but she found that the sick and sick prince who looked on coldly in her previous life was her only variable. Online revenge of two businessmen + family industry business war + contract: marriage first, love later