Dong Lingwei hates two things most in her life: quack doctors and evil people. The funny thing is that she had great medical skills, but her life was saved by the biggest evil man in the world - her adoptive father. Her adoptive father taught her how to recognize medicine, identify bones, and save lives and injuries, and he regarded her as a "little miracle doctor" who can help the world. Turning around, he handed her a poison-quenching silver needle and forced her to murder an important official in the court. He said: "Weier, your life is mine, and so is your medical skill. Now, use it to pave the way for me." Dong Lingwei crushed the silver needle, and the poisonous blood splashed burned her palms. She would rather destroy her own meridians than let her saving hands be stained with innocent blood. On the verge of death, she fell from a high cliff and everyone thought she was dead. Three years later, a mysterious heroine appeared in the world. She wields a lancet as thin as a cicada's wing and has extraordinary martial arts skills to treat various dissatisfactions. What's even more surprising is that she can make swords and shadows with one hand and bring back the dead with the other. Some people say she is a living Bodhisattva that the king of hell shakes his head upon seeing, while others say she is a Shura in sheep's clothing. Dong Lingwei is back. This time, she not only wants to save the person who deserves to be saved, but also kills the dog that deserves to be killed! Foster father, are you ready to face the retribution you have "taught" with your own hands? What you owe me, what you owe the world, I will take it back with my own hands, knife by knife!