Rebirth of the Supreme Immortal Demon

Tan Cheng, a kid from Earth, traveled through the fairy world after his death and became an ordinary mortal. I originally wanted to be a scholar all my life, but unexpectedly, I accidentally entered the path of immortality and embarked on the path of cultivating immortals... One thought becomes an immortal, one thought becomes a devil, immortality and devil, only in one thought in the heart...