Thousands of years have passed since the floating world, and the city of the future looks like a picture. However, there are undercurrents surging underneath, and the laws are strict. All living beings use numbers as their guide, and their souls are imprisoned in algorithms. Su Yuan, a scholar in the past and now a wanderer, carries a incomplete volume of ancient books in his arms and steps into the land of buildings and forests, determined to find the way to freedom. However, the city lord controls the world with the mysterious "Heavenly Mirror", and the people's hearts are confused. Old skills and new knowledge clash, and life and death are uncertain. Su Yuan wanders among numbers and talismans, gets acquainted with the hidden old clan, and conspires to break the mirror. The story writes the future with the pen of legend, full of ancient meaning: wise men fight against the law, chivalrous men ask people's hearts, can a thousand-year-old city see the light of day again because of one person's ambition?
