He Came from Jiuyou

There is no doubt that this is a time-travel and rebirth system fantasy. The protagonist is a ghost emperor who is admired by billions of ghosts. Unfortunately, he is trapped in a trap and survives from the ghost world through the living world to the earth. Inexplicably, he obtains a guidance system for cultivating immortals that claims to be invincible in the living world. There is no fairy start, no invincibility system, let alone the routine of a dragon-slaying knife in Novice Village. The whole world is grand, with many cultivation systems and many system settings. The protagonist almost goes to the two universes of the fairy world, the two crossings of the underworld, and the nine universes of the living world, starting from the earth. Try to fill in every foreshadowing as much as possible, and explain both long-term and branch lines as clearly as possible. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.