After traveling through time and becoming King Zhu Xi of Ming Dynasty and Qin Dynasty, he will no longer repeat the mistakes of history. Use medical skills beyond the times to extend the life of Prince Zhu Biao, and use modern wisdom to resolve the crisis in the court. When he discovered that the poisonous plot in the East Palace was hidden, he became his brother's sharpest hidden blade, walking on the edge of power under Zhu Yuanzhang's suspicious eyes. The new policy was implemented at the border gate in the north town, and the court in the south was stabilized to protect the prince. In the Hongwu turmoil, a dark web spanning thousands of miles was created to protect the country. This is not a road to hegemony, but an epic chapter in which a prince, acting as a vassal, reverses the fate of the Ming Dynasty.