Doctor Xiaocheng's counterattack and his life philosophy are based on 15+ real cases, allowing ordinary readers to learn medical common sense and professional doctors to see new ideas. Pay tribute to "The Good Doctor" and "Grey's Anatomy", different doctor stories, the same kindness of doctors. Liu Zhengliang, a doctor from Beipiao, was fired by the hospital because of problems with his flying knife surgery, so he had to return to his hometown, a small northeastern town. As a doctor who had made mistakes, he was assigned to the emergency department by the director of the Seventh Hospital based on the principle of cherishing talents. In this small town with a slow pace of life, mutual support between people and surging undercurrents, everyone seems to have an unknown past. They have witnessed the glory of this city and tasted the bitter consequences of its decline, but they have not stood still. This allows Liu Zhengliang, who was out of tune at first, to gradually integrate into it... This is a counterattack story of a doctor who made a mistake, and it is also a tragedy and comedy of ordinary Northeastern people's lives. Through medical diagnosis that brings joy and sorrow, the protagonist realizes his original intention of using very little money to treat the disease, and also conveys the life philosophy that life requires sub-optimal solutions.