In the universe of IBC there is a great deal of separation. The realms are split and sealed by the great enemies of the Righteous Path in order to prevent the rise of anyone who could challenge them. The realms are as follows:
Lower Realms: The contients of the Lower Worlds, broken down by who controls the region.
Lower Worlds: The planets that constitute the region of space that have been locked together by the Demonic Path. Typically have much sparser Qi and much weaker World Dao laws that are easier to break.
Upper Realms: The regions of space that have been bound together by the lock of the Demonic Path. These regions typically contain multiple Lower World regions and many Great Worlds.
Great Worlds: These are the worlds present in the Upper Realms. They are typically much larger than a Lower World's planets and have significantly denser Qi and stronger World Dao laws.
Divine Realms: These are the regions of the Heavenly Dao. These realms are beyond the ability of the Demonic Path to seal and are host to the greatest martial dynasties. The worlds within this realm are full of the most powerful Heavenly Dao laws and are difficult to fly in unless you've broken into a Large Success Xiantian realm cultivation. Those who are capable of being born and surviving the Heavenly Dao in the Divine Realm are all absolute geniuses beyond compare. Those whose potential is lacking will begin to be suffocated by the untamed and heavy Heavenly Qi in the Divine Realms as soon as they can detect and manipulate it. If they don't go down to the Upper Realms before they awaken this ability their meridians will break the moment this wild Qi enters them, ending their martial road and destroying their future. The many Upper Realms are scattered throughout the Divine Realms, accessible through space tunnels that allow you to travel to a lower order at any cultivation, but cannot be traveled through in reverse without the strength to defy the Dao that supports them.
Divine Worlds: These are the worlds of the Divine Realms. They are possessed of the highest order of laws and the greatest density of Heavenly Qi. The great sects of the Righteous and Demonic paths live on these worlds and go to war with eachother to control everything beneath them.