In the seventeenth year of Chongzhen, on the night when Meishan was about to be hanged, the soul of Tang Taizong Li Shimin passed through Zhu Youjian and took charge of the end of the country on the eve of the country's fall. Faced with Li Zicheng's troops approaching the city, the rebellion in the inner court, the corruption of nobles and the Qing army's eyes, he used iron-blooded methods to clean up the traitors and reorganize the army, reform the wealth, revive the firearms, first protect the capital, and then defeat the bandits, and then reverse the situation of the Liaodong war. Subsequently, the sea was opened for trade, education was established, the country was strengthened, and territory was expanded far away, which promoted the Ming Dynasty from the brink of collapse to the resurgence, and finally entered a new chapter of the prosperous age of the unification of the four seas.