Lin Yu, a history college student, accidentally traveled back to ancient times and became a little emperor who faced difficulties. He was deeply involved in the power whirlpool as soon as he ascended the throne. The situation in the court was complicated and the undercurrents of various forces were surging. When neighboring countries invaded, the court had different opinions on sending troops. He paid private visits incognito to understand the public and military conditions. After returning to the palace, he rectified the army and checked and balanced the forces of all parties. He also encountered crises such as harem battles, natural disasters, and assassinations. Lin Yu relied on his wisdom and firm belief to implement reforms, develop the economy, and enhance national strength. He eventually governed the country into a prosperous and powerful era and became an emperor deeply loved by the people.