Shen Shiyu, the daughter of a family of imperial doctors, witnessed her grandfather being falsely accused of "executing a noble concubine" to death on a palace wall when she was six years old. Shen Shiyu witnessed her father and brother's blood splattering with a guillotine at the age of fifteen for "collaborating with the enemy and treason." The word "slave" was branded on his left cheek and he became a criminal slave of the Huanyi Bureau. The cold water corroded his bones and the iron chains wore away his tendons. In the dark night, the mysterious old palace maid Cui used rotten leaves as a guide and taught her the secret of poisonous weeds: "Purple pearl leaves stop bleeding, sweet dill flowers kill people, and the way to survive lies in the hands of the King of Hell!"
Her fate suddenly changed. She used her skills to rescue a dying prince when he choked on food. She uncovered the plot of Liu Rumei, the legitimate daughter of the Liu family, to poison a child and frame Huimin Pharmacy. Hibernating in the darkness, she refined the strange medical method of "fighting poison with poison" - dove feather red vine mixed with podophyllum root powder, which eroded the golden thread plague poison of the Liu family's "immortality elixir"; desert snake bile mixed with bitter wattle juice, snatched the lives of hundreds of soldiers in the sea of blood at Blackstone Castle in northern Xinjiang!
Blood feud and plague intertwined. The Liu family colluded with King Zuoxian of Northern Di, burned beacons, and poisoned the water sources of the three towns, and framed the blame. Su Zhi Wen used Xuan Tie's heavy sword to cut open the way to life, and three hundred Phoenix Guards trampled on Duanhun Gorge to ambush them. On top of the Golden Palace, she dissected the body and examined the poison, and the podophyllum root juice poured out the golden thread entangled in the heart of the Queen Mother, revealing the truth about the "Eternal Life Pill" that corroded bones and killed people! The brass key to Jishitang's secret vault turned the world around, the iron evidence of official silver smashed Liu Mingtang's hypocritical mask, and the cold plum fragrance in Princess Fengyang's sleeves finally showed her fangs - the resentment of ten years of infertility is the mother seed of the Golden Thread Plague!
In the end, Shen Shi Yu dug out the poisonous mother and planted it in the ice cellar, and Su Zhiwen used the "Gui Chen" sword as his weapon. The Women's Medical Center was reborn, and the Xinglin Blood Edict was reduced to ashes. Deep in the palace, she smoothed the scars of the brand with her fingertips, held the general in her hand, and went to the mountains and rivers together safely.
