In the fifteenth year of Hongwu's reign, the eight-year-old grandson Zhu Xiongying passed away. Zhu Yuanzhang sadly lost his beloved grandson, and the Ming Dynasty sadly lost his heir. Ten years later, Zhu Daniu, a blacksmith with immense strength and strange brain, appeared in a border town. He married a beautiful orphan girl who had fled famine, and gave birth to twins, a boy and a girl. He originally wanted to work steadily and farm. Until the remnants of the Northern Yuan Dynasty went south, robbed his wife of cured bacon, and smashed his son's rattle. Zhu Daniu was angry, picked up an 800-pound hammer, single-handedly charged into the 100,000-horse cavalry, and beat the Great Khan of Beiyuan. Zhu Yuanzhang paid a private visit incognito to seek the auspiciousness of the country. Looking at the reckless man who kicked Beiyuan Khan's head like a ball, he burst into tears: "Grandson, you are really not dead!" From then on, the Ming Dynasty gained a nuclear-powered war god, the great grandson, and the world gained a Ming Dynasty on which the sun never sets.