From kidnapping children to extend one's lifespan, to hunting and killing strangers to cut off their limbs, from taking people’s facial features and viscera to collect money, to mesmerizing spiritual thoughts to control others and concealing artifacts to suppress demons—there are thirty-six sinister techniques in the realm of occult arts. Blood and flesh serve as materials, and lives are mere ingredients. Each technique is filled with eerie and unpredictable phenomena. However, let me share with you my thirty years of experience as a wandering sorcerer. I can assure you that amidst a thousand sinister arts, the greatest evil lies not in the techniques themselves but in the human heart.