The protagonist, Lin Mu, travels through time to a rundown farmer's household on the outskirts of Bianjing. Use basic chemical knowledge (purified refined salt, local brewing) and marketing concepts ("limited edition", "brand story") to earn your first pot of gold. After opening up the situation with unique products, we use modern management and logistics thinking to optimize efficiency. The prototype of "money order" was invented to solve the problem of trust in remote transactions. While cooperating with tea merchants and silk merchants in the south of the Yangtze River, he encountered local powerful siege. The protagonist unites small and medium-sized businessmen to build alliances based on concepts such as "industry standards" and "futures trading" to break up monopolies. This is not only a personal history of fortune, but also an "epic collision between modern commercial civilization and farming empire thinking." Every success and setback of the protagonist should trigger deep thinking about the limitations of the system, technology and the times.