I Use My Ordinary Mind to Prove the Devil's Way

An accidental outdoor adventure allowed Zhang Xu to see another side of the world. Returning to modern society, his best friend died because of him. He acted righteously to eliminate demons, but he personally created a bloody evildoer! The world is undergoing drastic changes and there are many sects. How will he deal with the major forces? The immortal path is ethereal and filled with treacherous shadows. How can he dispel the fog that covers the sky?