After his soul enters the body of a man in a 1959 Siheyuan courtyard in the capital, Lin Aijun becomes an electrician at a steel mill and has to support his younger sister. He awakens a sign-in System that can read minds and has a temper of its own. He gets all the rice, pork, and sesame oil he could want, while keeping his supplies safe and living peacefully among neighbors who each have their own schemes.
