Qin Guan was raised by his master Guan Shanyue since he was a child. Twelve years later, he was sold to the Nan family in Qingzhou as a son-in-law as compensation. When he first entered the Nan family, he begged for charcoal for his frail wife Nanrou, punched Hu Liu, the steward of the Internal Affairs Bureau, and accidentally activated the small black tower left by his master. In order to heal Nan Rou, he went deep into the Valley of Ten Thousand Demons and killed the third-level tiger demon with one stick. From then on, he started his counterattack of "violent reasoning".
