In the twenty-fourth year of Hongwu's reign, war broke out in northern Xinjiang. One hundred thousand Tatar cavalry besieged Datong, and the civil and military forces of the Manchu Dynasty were as silent as a cicada. Zhu Yuntong, who traveled through time, pretended to be weak and idle all year round, and was despised by both the government and the public. In the face of the court's pushback, opponents' difficulties, and the suspicion of officials, he no longer remained silent. He concluded that the great unity was safe. He provided detailed evidence about the generals and the true situation of food and grass, breaking the court's dilemma. From then on, he counterattacked step by step, reversing the fate of himself and the Ming Dynasty.