Chen Mo was reborn in the early years of Yongle, when there was a great disaster in the north, and Linhuang County was starved to death. Because his uprightness offended his superior, he was falsely accused of embezzling money to provide food for disaster relief, and was about to be executed. Memory fragments show that the real disaster relief grain was intercepted and sold privately by collusion between government and businessmen. Relying on the agricultural knowledge and initial activation of the system in his previous life, Chen Mo used the remaining prestige of the county magistrate and the refugees' extreme desire for food to plan a sophisticated "black eating black". And cleverly put the blame on bandits or hostile forces. Use the recaptured grain to temporarily stabilize people's hearts, gather the first batch of core refugees, repair and expand the county government granary, use "grain" as a weapon, a bargaining chip, and a lifeline, under the light and shadow of the Yongle era, leverage the power structure, reshape the world, and ultimately affect the national destiny.