When Li Shimin's Soul Transmigrated into Zhu Qizhen, the Ming Dynasty's God of War

In 649 AD, Li Shimin stands on Mount Zhongnan, reflecting on the merits and mistakes of his life and yearning to live again and build another age of prosperity. His soul drifts through the cracks in time for a hundred years, until it reaches 1449 AD, just as the Zhengtong Emperor of the Ming, Zhu Qizhen, is about to be captured by the Oirat at Tumu Fortress. Their souls unexpectedly merge, and Li Shimin is reborn in his body. With his full imperial intellect, the governing experience he gained during the Zhenguan era, and a vague understanding of later history, he will begin another legend in an entirely new age.