Zhang Erwa's Underworld Tales

Looks like I, Zhang Erwa, am a natural-born prodigy, destined to become a great leader of the underworld. If I’d lived in ancient times, I might even have become a legendary prime minister. A few months later Could it be that I, Zhang Erwa, am not the mastermind controlling the dark forces and ruling the underground kingdom, but instead a once-in-a-millennium fool, rarer than anyone else in the world?