The Assassin Empress's Revenge

After the assassin Jiang Yunxi died alongside her enemy, she transmigrated into the body of a country girl. She unexpectedly learned that the poor girl, who was beaten and abused at every turn, was actually the daughter of a marquis. The woman who abused her, Granny Wang, had switched the girl's identity with her own daughter's. In a fit of rage, Jiang Yunxi set fire to Granny Wang's entire family and headed for the marquis's estate in the capital to reclaim her true identity...