Promised to Be Concubine, Why Am I Emperor?

After suffering a miscarriage and dying with regret, Princess Xiangjun is reborn before entering the palace. Determined to seek revenge, she uses her wit to gain the trust of eunuch Gu Tingxue, entering the palace under the guise of a young lady from the Xu family. Within the harem, Xiangjun navigates the court among Emperor Zhou Qinghe, Empress Xue Jiaojiao, and others, leveraging her position to expose conspiracies. She uncovers a hidden connection between Gu Tingxue and the Empress Dowager, then allies with Gu to turn Empress Xue against the emperor. Together, they resolve crises including assassinations and natural disasters, gradually seizing control of the harem and the government. With the support of her allies, Xiangjun ultimately ends the emperor's rule, shattering conventions and transforming from a vengeful concubine into the regent who holds ultimate power, achieving a complete reversal of her destiny.