So this is just to clarify the levels and have all the information in one place.
Spiritual Essence is found in every living being except for animals for some unknown and unexplained reason. However, animals have the capacity to become Half-Corrupted or Corrupted beasts also depending on some unknown(for now) factor.
People who are naturally able to manipulate Spiritual Essence have the capacity to become cultivators as they are able to gather the Spiritual Essence of their surroundings and pull it into themselves.
Each level of cultivation has a total of four subsections: Entry, Middle, Late and Peak.
So far the stages of cultivation to become an Immortal are:
-Body Strengthening
-Opening Meridians
-Cycling Essence
-Core Forming
-Spiritual Warrior
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-Immortal