Jiang Tan, a hepatobiliary surgeon, after working continuously for 72 hours, opened her eyes and transformed into the daughter of a criminal in the ancient exile team. Good news: She survived. Bad news: The start is plague + frontier battlefield, which can be called hell difficulty. The only medical equipment is an... Ancestral butcher knife left behind by her father. Seeing the gloom and mist in the wounded barracks, the soldiers with severed arms and legs could only wait for death, Jiang Tan silently put on a homemade mask and picked up the knife that had been sterilized with boiling water. Debridement, suturing, amputation, replantation... When she used an embroidery needle and catgut to perfectly sew up the general's chopped-up abdomen, the entire military camp exploded. "Damn, witchcraft! Can you still live after your intestines have come out?!" "She is Hua Tuo alive, a miraculous medical fairy!" From then on, Jiang Tan became the Dinghai deity of the northern military camp. Broken leg? Take it! Hit by a poisonous arrow? Release the serum! Got smallpox? Isolation! Get cowpox! She created an "earth substitute" for penicillin, created an ancient version of blood transfusion, and even drew human anatomy diagrams, which shocked the entire hospital. A certain young prince, who was known for his coldness and never trusted anyone, after being pulled back from hell, silently protected her behind him, and handed her a sharpened lancet with red ears: "Dr. Jiang is indispensable in the army." Jiang Tan: "Thank you, but you are blocking my light." The young prince: "..." This is the story of a modern surgeon who used a knife in ancient times to cut a path to heaven from a pile of dead people, and by the way saved a future overlord.