High school student Zheng Shaopeng fell asleep in a history class. When he woke up, he found that he had arrived at the Danzhu Dynasty in the history book and transformed into the poor scholar Yang Lin. At first, Yang Lin could not adapt to ancient life, but as he used modern thinking to develop some small inventions, Yang Lin became popular and loved by the villagers, and he gradually found his own sense of belonging. In an era of internal and external troubles, Yang Lin experienced wars and witnessed the sufferings of the people. He relied on his wisdom and ability to win a place in the court, and gradually led the Danzhu Dynasty to curb corrupt officials internally and defend against powerful enemies externally. With scientific and technological progress, The road to a powerful nation by breaking through superstition.