The time traveler uses history as a sword to reshape the destiny of Dashun. Understanding the painful lessons of the Jiashen Incident, he skillfully maneuvered under Li Zicheng and united with Li Yan, Hong Niangzi and other innovative forces to implement the New Deal and improve military discipline in the desperate situation of the corruption of old generals and the pressure of the Qing army. Based on Guanzhong, we should deepen our roots and forge a pragmatic unification path that first determines the Central Plains and then plans for the south of the Yangtze River. This is a duel between knowledge and power. It is the dimensionality reduction and transformation of ancient troubled times by modern thinking. It is also an epic that changes destiny and rewrites the country.