Su Wanting, a doctor of modern medicine, has just finished repairing the ancient medical books left by her mother. Her fingertips touched the Hotan jade plaque hidden in the medical book. Her vision went dark. When she woke up again, she was the concubine of Dingbei Hou Mansion in the Great Yan Dynasty - the Su Wanting who was poisoned by her aunt Li Shi and could not live for 24 hours.
In a leaky house, she took out the fragments of "Lin's Medical Classics" hidden under her pillow (which her mother had given to the original owner before she died). She used her modern knowledge of microbiology to identify the dried bones as saprophytic fungal spores, and relied on the original owner's vague memory to find the complete medical book in the secret room of the Buddhist temple. The moment she drank the extract of Coptis chinensis and Honeysuckle, her aunt, Mrs. Li, kicked in the door and saw the "dead" concubine wiping the medicine residue from the corner of her mouth. She smiled very coldly and said, "Auntie, this poison is not cruel enough."
In order to save the concubine who was "adulterated" by the Li family, Su Wanting stopped the seventh prince Zhao Chengrui who was going to the Hou Mansion for an unannounced visit - the fringe prince who was rumored to have "a blocked heart and would not live to be thirty". She heard his premature ventricular beats with a stethoscope modified from a jade brand, and placed her fingertips on the acupuncture points on his wrists: "I will help you cure your heart disease, and you will help me settle my concubine's affairs for three years." Zhao Chengrui pinched the contract she handed over, and the sarcasm in his eyes turned to scrutiny: "If you can't cure it?" She smiled: "Then I will die with you."
But when the emperor wanted to destroy the Hou Mansion because of "Dingbei Hou's collaboration with the enemy", and when the queen sent someone to assassinate Zhao Chengrui, Su Wanting stood on the city wall, looking at Zhao Chengrui below, holding a jade sign in her hand: "Do you want the world, or do you want me?" Zhao Chengrui got on his horse and drew the sword from his waist: "What I want is to guard the world with you."
