A modern young man accidentally traveled through time and became Li Xuan, the ninth son of Emperor Taizong Li Shimin of the Tang Dynasty who was a genius but died young but has not been recorded in history. He never chose to be low-key and forbearing, but relied on a knowledge map that spanned a thousand years, regarded "investigating things to gain knowledge" as his creed, and used technology as a lever, determined to leverage the entire era and lead the giant ship of the Tang Dynasty to the top of the world.
