Beginning realms: (Barren lands)
1. Mortal Realm (Strength equal to F-rank)
2. Spirit Gathering Realm ( E-rank)
3. Qi Refining Realm (D-rank)
4. Foundation Building Realm (C-rank)
5. Core Formation Realm (B-rank)
6. Nascent Soul Realm (A-rank)
7. Soul Transformation Realm (S-rank)
Lower world: (will be introduced after the 50th floor is climbed)
8. Spirit severing Realm
9. Divine Ascension Realm
10. Heavenly Tribulation Realm
11. Immortal Ascension Realm
More will come as the story progresses.