Traveling back to the early years of Zhenguan, Li Chengye became a refugee. Drought and family oppression came one after another. He relied on modern knowledge to fight drought and fight against corruption. Counterattack all the way from the bottom, use peasant wisdom to deconstruct the code of the prosperous Tang Dynasty, and start an epic showdown with the nobles to see how he can open up a path for the common people to become a powerful minister in this changing era.