The main source of strength in this world comes from something that the human realm calls [Force]. Not everyone can feel or use force. Only people with talent could do so.. This talent is only found in about 1 out of every 100,000 humans. The talent is tested at the age of ten. Those who have any sort of talent are usually scooped up by their countries to be trained as officers in the military or other positions of power.
Below are the 9 known cultivation ranks in the human realm. (From weakest to strongest.)
Body Strengthening
Core Condensation
Core Refining
Elemental Siphoning
Elemental Cancelation
Aura Formation
Divine Aura
(Each of the ranks above has breakthrough points before they reach the next one. They are from level 1 to level 9. Level one being the weakest and level 9 being the strongest. Within that specific rank of course.
Each small level has even smaller breakthrough points. That being the initial, middle, upper, and peak stages of that specific level.)
Only people with cultivation talent can be mages as only they have the chance to harbor the organ needed to use magic. Mages use [Force] to power their magic spells. Finding a person with the organ necessary for magic is 1 out of 1,000 cultivators. Being harder to find also means that they are much stronger than normal cultivators.
Mages have a different basic classification system. Here is the ranking from weakest to strongest.
1st Circle Mage
2nd Circle Mage
3rd Circle Mage
4th Circle Mage
5th Circle Mage
6th Circle Mage
7th Circle Mage
8th Circle Mage
9th Circle Mage
There are smaller level within each rank that are also labeled as initial, middle, upper and peak stage.