Time Travel: the Poisonous Concubine

In the first life, she was a Cinderella who came from a small county town, and he was a rich young man from a superior family who had returned from studying abroad. They missed each other due to a strange combination of circumstances; in the second life, she was the carefree eldest daughter of the general's mansion, and he was the ruthless and cunning Prince Rui. In order to help When her brother achieved great success, he did not hesitate to kill his loyal friends; in order to avenge his father and brother, she did not hesitate to die with him on the night of flowers and candles in the wedding room; in the third life, she, who carries the memories of the first life, and he, who has the memories of the second life, can they endure all the hardships and build a good relationship in this life?