Of course! Here are some secret realm names that may apply to your fantasy cultivation novel:
1. The Realm of Dreams
2. The Mysterious Realm
3. Immortality Realm
4. Spiritual Realm
5. Realm of Divine Hidden
6. Illusionary Realm
7. Virtual Realm
8. Secret Realm
9. Spiritual Mountain
10. Wonderland
These names can be used to describe your secret realm, depending on your settings , you can modify or combine them appropriately to suit your storyline.