10 minor ranks within each realm.

Early-Stage= rank 1 to 3

Middle-Stage= rank 4 to 6

Higher-Stage= rank 6 to 9

Peak-Stage= rank 10

Realms-

Elementary Profound Realm(150 years)

Nascent Profound Realm(300 years)

True Profound Realm(450-500 years)

Spirit Realm(1000 years)

Sky Realm(2000 years)

Ace Tribulation Realm(10000 years)

.

(I will update this as the story progresses.)