The Prison Guard of Great Heng

In this world, there are Confucianism, Daoism, Buddhism, Legalism, witchcraft and curses, demons, and monsters. Zhong Xu is a prison guard at the great prison in the southern part of Hengjing, the capital of Great Heng. Three months ago, he was a modern-day corporate drone staying up late to work overtime. Then he opened his eyes and found himself watching death-row inmates in a prison. A prison guard's duties: patrol the cells, light the lamps, watch the condemned. Zhong Xu's duties: solve cases, rise through the ranks, cultivate. With a pair of discerning eyes, he can spot the flaws in any spell in the world. With the Manual of Criminal Law, he cultivates by delivering justice. Solve a case, gain a rank, advance a level in cultivation, and transform himself completely.