Lin Shen, a college student in the 21st century, travels through the Tang Dynasty and becomes a bullied merchant's son-in-law. With the bound "supermarket system", he started selling modern commodities such as matches and fish tofu, easily shocking Princess Changle and Li Shimin. From then on, he not only used lipstick to conquer the circle of ladies, used glass to ignite civilian consumption, but also used self-heating rice to solve the locust plague, and used modern military training methods to crush the rebels. From transforming agriculture to starting a currency war, from opening the Academy of Sciences to incorporating "Gewu" into the imperial examination, he started from a supermarket and gradually implanted modern technology and concepts into the Tang Dynasty, starting a counterattack legend from a son-in-law at the bottom to an unparalleled king of Chu.
