The levels in cultivation:
J - Novice
I - Beginner
H - Practitioner
G - Expert
F - Master
E - Grandmaster
D - Hero
C - Champion
B - King
A - Emperor
S - Saint
Z - Divine
Y - Sovereign
X - Overgod
In each of this levels their is also three sub-levels: inferior, medial, and superior. For example, J - Inferior Novice, JJ - Medial Novice, JJJ - Superior Novice.
Grading system of weapons/artifacts/techniques/etc:
J - Mortal
I - Profound
H - Earth
G - Spiritual
F - King
E - Emperor
D - Epic
C - Legendary
B - Ancient
A - Saint
S - Heaven
Z - Divine
Y - Sovereign
X - Overgod
In each of this grades their are also five tiers: low-tier, mid-tier, and high-tier. For example, J - Low-tier Mortal weapon, JJ - Mid-tier Mortal weapon, and JJJ - High-tier Mortal weapon.
Ranking system for monsters will be:
I - Herald
H - Guardian
G - Crusader
F - Archon
E - ???
D - ???
C - ???
B - ???
A - ???
S - ???
Z - ???
Y - ???
X - ???
In each rank has are divided into 5 stars.