It tells the story of a modern deliveryman named Zhao Feifan who accidentally traveled to the Qin Dynasty and became a mysterious figure next to Qin Shihuang. Relying on the vague memory of history and the thinking mode of modern people, Zhao Feifan skillfully maneuvered in the Qin court, trying not to change the historical trend, but also hoping to improve the people's livelihood under the harsh rule of the Qin Dynasty. He used the deliveryman's unique and efficient route planning ability to optimize government affairs processes for Qin Shihuang, used modern management knowledge to improve administrative efficiency, and even inadvertently promoted the emergence of certain technologies.