Regarding realms, some readers said that using First Realm, Second Realm, and so on wasn't very good.
First, my apologies.
From here on, I'll try not to write it that way and will use the realm names instead.
Next, here's an overall introduction to this book's cultivation realms:
First Realm: Blood Bone Realm
Second Realm: Spirit Vein Realm
Third Realm: Soul Palace Realm
Fourth Realm: Dao Foundation Realm
Fifth Realm: Inscription Realm
Sixth Realm: World Condensation Realm
Seventh Realm: Cave Profound Realm
Eighth Realm: Void Nether Realm
Ninth Realm: Saint Realm
Tenth Realm: Dao Source Realm
These are the realms that have appeared so far. I haven't specifically written about the rest yet, so I won't list them. They'll gradually be revealed in the story.