Strongest Abandoned Son

A brief description of the Strongest Abandoned Son manga:

Ye Mo woke up and suddenly realized the world around him had changed. He came to Earth in modern times, where people are experiencing an acute lack of spirituality. A good-looking teacher from his past world was nowhere to be found. Later on, Eu Moe learned that the teacher had transformed himself into a young man’s body and that he had been left by his clan for an unknown reason…