Great Tang: Thirty Years of Slaying Demons in the Demon-Suppression Bureau

In a Tang Dynasty overrun by demons, with two sages ruling the court, Lin Zhao transmigrates into the body of an executioner serving a sentence. He gains the Justice System, which rewards him with the White Yang Diagram, the Great Five-Element Extinction Divine Light, the Great Sage Celestial Art, the Seventy-Two Earthly Fiend Transformations, the Thirty-Six Heavenly Star Transformations, the Five-Colored Divine Light... He becomes the founder of the cultivation path and the pinnacle of the world. Years later, when gods and demons from beyond the heavens descend, the Five-Colored Divine Light flashes across the sky. The empress gazes into the distance: So it was him who had always been protecting my dynasty.