Mortals and Cultivators Achieve Enlightenment

He has been sweeping the floor at the bottom of the sect's library for hundreds of years, reading through all the scraps, miscellaneous notes, and even recipes that no one cares about. The senior brothers only knew that he was a good old man with no cultivation. Until the crisis of annihilation came, the mountain-protecting formation was shattered, and powerful enemies pressed on the territory. It turned out that what he was reading was not a book, but the rules of heaven and earth.