You're the one who wants to marry a mistress, and I'm marrying someone else, yet you still

In her past life, Xie Wanru raised her stepson and served her in-laws with utmost care, yet Shen Nian'an and his stepson slaughtered her entire family, ultimately poisoning her to death. Reborn, she refuses even the position of mistress of a noble household; she will make the Shen family suffer a hundred times, a thousand times, worse than she did! Everyone in Xuancheng says Xie Wanru is insane—how can a divorced woman survive? Will the Xie family still tolerate her? Yet, she pacifies the northern border, quells internal strife, and assists the crown prince in ascending the throne. Shen Nian'an is filled with regret. He thought Xie Wanru would still remember him as her husband, but instead, he sees this exceptionally handsome man standing beside her… The Third Prince, her white moonlight: If you change your mind and help me, I will grant you the position of Empress…