Krypton's Destiny to Slay Demons: from Jailer to Human Saint

He traveled through time and became a jailer at Chaotian Prison in the Great Yu Dynasty. His predecessor was beaten to death for stealing food from a death row prisoner. As soon as Gu Changsheng opened his eyes, he was faced with the sudden death of demon prisoners and only three months left to live. Fortunately, there is an extra volume in my mind [The Deduction System of Fragments of the Hundred Schools of Thoughts]. Is Confucianism incomplete? After ten years of slaying demons, [Haoran's Righteous Song] was instantly deduced! The military is incompetent? Killing hundreds of people will instantly complete the [Seven Ultimate Killings]! This is a world of demons and chaos, and it is also Gu Changsheng's path to eternal life. "Do you have a thousand years of cultivation? Sorry, I used your life force to fill the hole." From the heart-eating rat demon's "listening to the wind and positioning" to the thousand-faced fox demon's "charming transformation", to the ancient god's "supreme godhead". Gu Changsheng stood on the heavenly prison with his sword in hand, looking at the gods and Buddhas in the sky and sneered: "I heard that immortals enjoy endless lifespan. Today, Gu is borrowing the heads of all the immortals to prove my path to immortality!" Kill people, fill lives, deduce, invincible! This is the story of a jailer who kills all over the world!