In the first year of Chongzhen in the Ming Dynasty, professor Chen Ke died unexpectedly, and his soul traveled into the body of Chongzhen Emperor Zhu Youjian, who was hanged on Meishan Mountain - the same body he had when he ascended the throne at the age of seventeen. The dragon's chair is not yet warm, and the imperial case is already piled with urgent memorials from nine sides. They are even more shocked to find that the Nanyang Pearl presented by Qi Meng, the chief eunuch of the Supervisor of Ceremonies, contains arsenic. At the critical moment of life and death, a golden seal and jade inscription suddenly appeared in his eyes: "The mountains and rivers of the country are revealed, and the loyalties and traitors of the ministers and workers can be distinguished." - A "heavenly book" that only the emperor can see is quietly rewriting the fate of the dynasty. He took in Donglin's abandoned son Yu Qian, whose governance shocked both the government and the public, but was criticized for being "loyal to the country but not the emperor"; he pulled out the Jinyi Guards and secretly staked the army soldiers, and the secret notes in his sleeve revealed the shocking injustice of the bloody battle of the Hunhe River in the seventh year of the Apocalypse; he rescued Shen Xiaoyue, a civilian girl who criticized the imperial power, and the blood-stained genealogy in her arms actually pointed to the jade ultimatum that disappeared on the night of Emperor Taichang's sudden death...