Uncle Long's Dragon God System

He had a dream in which he swallowed an earthworm, and then he transmigrated.

He awakened the Dragon Lord’s Dragon God System, but the Dragon Lord was a bit temperamental, his mood constantly changing, and he was always calling him an idiot...

This is a world of immortals and gods everywhere, a world of immortal martial arts: the Blue Star Immortal Realm.

By chance, he entered a mysterious library and unexpectedly discovered an ancient secret manual...