Slaying Demons and Exorcising Evil, Starting as a Prison Guard

After transmigrating to the Great Qian dynasty, Meng Chang became a jailer in the Demon Suppression Office. He thought he could scrape by for the rest of his life, but soon discovered that demons and monsters were everywhere, and the people were living in misery. Humans could only cling to demons and monsters to eke out a living. Then Meng Chang discovered that he had awakened a System. By killing those who had committed crimes, he could acquire their cultivation. He could then infuse that cultivation into his own martial arts. And so began a story of fighting violence with violence!