According to wiki, a person's cultivation level can be separated into the 'Nine Mortal Realms' and 'Seven Divine Profound Realms'. Each realm goes from level 1 to 10 before they can advance to the next one, the 10th level of a realm is considered the peak of that realm. Once someone goes past level 10 of a realm but does not enter the next realm it can be considered 'Half-step' into the next realm. Divine Tribulation Realm has only 9 levels.
When one's profound strength grows, it essentially means that the density of the profound energy in their profound veins is growing, that their profound energy has become slightly more compressed. Once it reaches a certain level of compression, a fundamental change will occur, that is also when they enter a new realm.
1 Elementary Profound Realm
(初玄境) Strength, speed and senses above ordinary living beings.
2 Nascent Profound Realm
(入玄境) Profound Strength began to develop.
3 True Profound Realm
(真玄境)
4 Spirit Profound Realm
(灵玄境)
5 Earth Profound Realm
(地玄境)
6 Sky Profound Realm
(天玄境) Those who reach this realm can use Profound Floating Technique and fly in the skies unhindered.
7 Emperor Profound Realm
(王玄境) Those who reach this level are referred to as Thrones and can use the power of the Domain.
8 Tyrant Profound Realm
(霸玄境) Those who reach this level are referred to as Overlords.
9 Sovereign Profound Realm
(君玄境) Those who reach this level are referred to as Monarchs and can create their own Pocket Dimension for storage. This is the peak of mortal achievement.
Seven Divine Profound Realms (神玄七境)[3]
1 Divine Origin Realm
(神元境) Vital Energy Deification. Those who reach this level are referred to as Profound Gods by the cultivators from lower realms.
2 Divine Soul Realm
(神魂境) Soul Deification.
3 Divine Tribulation Realm
(神劫镜) In this realm, there is only the growth of profound strength. Because 60% cultivators perish in this realm while crossing the Divine Tribulation, this realm is also called Divine Perishing Realm (神陨镜).
4 Divine Spirit Realm
(神灵境) Spirit Deification.
5 Divine King Realm
(神王境) Can be called Realm King in some Low-Rank Star Realm.
6 Divine Sovereign Realm
(神君境) Can be called Realm King even in Middle-Rank Star Realm.
7 Divine Master Realm
(神主境) Can be called Realm King in High-Rank Star Realm. Is the closest to True God that humans can achieve.
Unknown
1 Divine Extinction Realm
(神灭境) Cultivators who made their way into this realm can be considered half step into True God.
2 Unknown 1B+
-Profound Entrances-
Altogether, a person can only have a total of Fifty-four Profound Entrances. An ordinary person is gifted with approximately ten open profound entrances while a person with high innate talent may be gifted with around fifteen open profound entrances. A person with twenty naturally opened profound entrances can be considered an exceptionally gifted talent. If one has more profound entrances opened, their cultivation of the profound, and their activation speed will increase. A practitioner with twenty opened profound entrances would undoubtedly cultivate and activate their profound strength twice as fast as a practitioner born with only ten opened profound entrances.
-Blood Essence-
Using blood essence is a way to temporary boost one's profound strength by a degree. However this is not something most people will do, mainly only in a true life or death situation. Once used blood essence is almost impossible to recover. After using blood essence, one's profound strength would drop by a huge amount. One's cultivation level could even drop. Using blood essence also exhausts one's life and future potential.
Copied from Against the Gods wiki. I do not own anything.