Return to the Tang Dynasty and Fight the World

A white-collar otaku accidentally met Li Shimin, the king of Qin who came from time to time. After living together for a while, the two established a deep friendship. Soon after, he traveled back to the Tang Dynasty with the King of Qin Li Shimin, and used the knowledge of modern people to change history, develop the Tang Dynasty, help his brothers conquer the world, and ultimately build a powerful empire unparalleled in the world. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.