I'm in the Demon-Suppressing Division's Demon Burning Deduction

Using evil spirits as firewood, all kinds of dharma can be deduced. Tao Fu, a low-level clerk in the Huangting World Demon Suppression Department, faced the invasion of strange demons from the outside world. He was the only one to slay the demons with one sword, and then... Devour the true spirit and deduce Taoism. Based on the Huang Ting Dao method, he refined the supernatural powers of heretics and demons. He pushed every ordinary method to the extreme. From the "Qi-Entraining Technique", merged with the paper spirit demon's natal magic, transformed into the "True Method of Devouring Demons to Build Life"; "Fireball Technique" accommodates the original demonic fire of the earth vein corpse dragon, and finally becomes the "Hunyuan World-Destroying Dragon Flame"... As time goes by, Tao Fu suppresses the heavens by himself, ushering in the Huangting Era and the era of humanity conquering the heavens. His Tao is also widely spread in the world: "The most powerful Tao method is to make all enemies become fuel for my Tao."