The soul of a modern courier penetrates into the body of a debt-ridden post office official in the Ming Dynasty. Starting from the renovation of a dilapidated post station, he used modern logistics concepts to integrate escort agencies, water transport, and caravans to create a huge private express delivery network spanning the two capitals and thirteen provinces of the Ming Dynasty. What he sent was not only goods, but also information, money, and even the support of people and the future of the empire.