In his previous life, Wu Li was a loyal but naive eunuch in the Royal Horse Guards. He accidentally obtained the "Secret Map of Kunyu" which marked overseas silver mountains and shipping routes. He wanted to present the map to open up the sea and strengthen the country. However, he was framed by Liu Jin, the chief official of the Lit Supervisor of Dongchang. He was accused of "liaison with foreign barbarians" and was executed late. The map was also taken away. After being reborn three days before he obtained the secret map, Wu Li's heart was filled with chills, and he was immediately swallowed up by endless hatred and cold reason. In this life, he is no longer a pawn to be exploited. Relying on the foreknowledge of Liu Jin's conspiracy, the direction of the court situation, and even the maritime crisis in the coming decades, he is determined to use this picture as a blade and the deep palace as a chessboard to make a huge gamble of revenge and redemption. He wanted to take advantage of the information gap to reverse the layout and work step by step before Liu Jin's network closed. He made friends with capable officials and generals whom he missed in his previous life, gained the trust of key figures, planted the seeds of opening up the sea in the emperor's heart, and finally nailed Liu Jin and his party members to the pillar of shame of treason and corruption with irrefutable evidence in the court. This is not only to avenge oneself, but also to reverse the national destiny of the Ming Dynasty, which is stuck in self-reliance and lost sea power. Between the turbulence of the palace and the coming wave of the Age of Discovery, a reborn eunuch will move the lever of history.
