Qingxiu, a modern young man who is blind but as clear as a mirror, accidentally travels across the Tang Dynasty. Although he is trapped in darkness, he can perceive the world with supernatural powers and is accompanied by a good wife. Using his future memories, he made popcorn, burned new bricks, built tiled houses, and led the poor mountain villages out of poverty and become rich. His brick-burning skills were recognized by Heaven and he was granted the title of Baron. The old village chief was actually an old servant of the Supreme Emperor, which attracted the attention of the retiring Li Yuan, who sent the Emperor to become his disciple incognito. Qingxiu had known the truth for a long time but pretended to be ignorant, and taught all the good strategies for governing the world to future generations. Finally, he was appreciated by two generations of emperors, but he declined the imperial invitation and returned to his hometown with only his beloved wife, creating a legend of a reclusive emperor in civilian clothes.
