Mortals, Invasion of Demon World

[Mortal flow, no system, no holy mother, no harem] Introduction: September is the fall, and there is already frost and snow. He is begging for warmth in front of a restaurant. The old man in green robe he meets becomes the little boy's guide to enter spiritual practice. After many years, the master passed away due to illness, and he no longer had any thoughts about him. "Zhang Han, take this thing and enter the immortal gate." … When the demon world invaded, his physical body was destroyed and he had no choice but to turn to the ghost path. The little boy who used to beg on the street has unknowingly become a senior and powerful person in the eyes of others.