On the Wedding Day, the Substitute Foolish Bride Wants a Divorce

On her wedding night, Su Qiannian, the legitimate daughter of the treasonous General Su Xiuyuan, is brutally whipped by Xu Hongyi, a servant in Prince Gu Wei’s residence. Having transmigrated from a modern hospital explosion into this body, Su Qiannian fights back, breaking Xu Hongyi’s leg and wrist before being interrupted by her husband, Gu Wei. Gu Wei, known as the God of Slaughter and the emperor’s only younger brother, is a cold, powerful prince who wields the imperial sword but suffers from a chronic, fatal illness. Despite his authority, he fails to protect his servant and instead orders Su Qiannian to be thrown into the back mountain, a place guarded by deadly snakes.

Instead of dying, Su Qiannian survives by killing the prince’s prized python, Xiaohua, and roasting it for food. When Gu Wei discovers her, he is enraged by the loss of his secret weapon but also shocked by her resilience and medical knowledge. She reveals that his current medication, administered by Imperial Physician Li, is actually a slow-acting poison containing Five-Flavors Suppressant Powder that is killing him. Gu Wei, though furious, is forced to acknowledge her value. He strikes a deal: she must cure his illness and remove the needles embedded in his brain, and in return, he will protect her title as Princess Consort and provide her with resources.

Su Qiannian establishes her dominance within the Prince’s residence by punishing Xu Hongyi and asserting her authority over the staff. She discovers that Gu Wei has needles embedded in his skull, a result of childhood assassination attempts, and begins the delicate process of removing them. Her medical skills far exceed those of the Imperial Medical Bureau, earning her a fragile respect from Gu Wei’s loyal subordinates, though they remain wary of her. Meanwhile, the Shen family, who orchestrated the swap of brides and disfigured Su Qiannian’s face with a potion, view her as a threat. Shen Qingqing, the cousin who stole Su Qiannian’s original engagement to the Crown Prince, plots against her from the shadows.

Gu Wei accompanies Su Qiannian to the Shen mansion to assert her status, where he physically stops Shen Zhengtian from striking her. This display of protection confuses the Shen family and strengthens Su Qiannian’s position. However, the political landscape is treacherous. The Eldest Prince, Gu Jingchen, who was originally betrothed to Su Qiannian before her disfigurement, visits the Prince’s residence with hidden agendas. He harbors resentment and desire, complicating the already tense dynamics between the royal brothers. Gu Wei, who suspects the Eldest Prince of plotting against him, keeps a close watch on Su Qiannian, ordering his men to follow her to ensure she does not fall into enemy hands.

As Su Qiannian continues her treatment, she uncovers deeper conspiracies involving the Second Prince and the poisoning of Gu Wei’s father. She learns that her own family’s treason charges may be part of a larger political maneuver. Her primary goal remains the exoneration of her father and the rescue of her family from exile in Jingzhou. To achieve this, she must first ensure Gu Wei’s survival, as he is the only one with the power to challenge the emperor and the royal factions. The narrative follows her strategic navigation of court politics, her ongoing medical battles with Gu Wei’s condition, and her relentless pursuit of justice for her family while maintaining a precarious alliance with the man she initially sought to escape.