A modern-day man from the 21st century transmigrates into Li Qian, the disgraced crown prince of the Great Qian Dynasty. Framed by the royal family, he voluntarily severs all ties and goes into exile in remote Ningyuan County. He uses modern knowledge to make stinky tofu to feed the locals, builds tractors and excavators for infrastructure construction, and paves asphalt roads, transforming the barren county into a prosperous paradise. During a nationwide drought, he anonymously donates grain to save the imperial court. When the capital falls, he defeats the invading army with modern firearms. In the end, the remorseful emperor abdicates. Amid public pleas, Li Qian ascends the throne and leads the Great Qian Dynasty toward modernization.
