All equipment, martial arts techniques, and life skills in this game are divided into five tiers.
That is, the classic white, green, blue, purple, and orange.
However, the naming conventions differ.
Equipment:
Common (white), Fine (green), Excellent (blue), Epic (purple), Legendary (orange).
Some people might think Fine is blue and Excellent is green, and World of Warcraft certainly sets it up that way, but when the author was a child, a score of 80 or above was considered "fine" and 90 or above was considered "excellent," so subconsciously the author felt that fine was inferior to excellent, which is why the settings are the reverse of World of Warcraft.
Therefore, this is a special note that Fine is green and Excellent is blue.
Additionally, there is a very rare type of equipment—Supreme (blue-purple)—which is generally produced when Epic equipment is damaged or Excellent equipment is advanced, such as [Damaged Nether Soul Iron Armor (Chest Armor/Supreme)] and [Damaged Ghost General Iron Halberd (Spear/Supreme)].
These two should originally have been Epic tier, but because they were damaged, they dropped by half a tier. Such equipment is relatively rare, hence this special explanation.
Professional Skills:
Entry Level (white), Proficient Level (green), Expert Level (blue), Master Level (purple), Grandmaster Level (orange).
Martial Arts Skills:
Elementary Martial Skill (white), Intermediate Martial Skill (green), Advanced Martial Skill (blue), Rare Marvelous Skill (purple), Peerless Divine Skill (orange).
Furthermore, although most combat techniques have varying requirements for learning, they generally do not display a grade, such as Whirlwind Slash, Cleave in Two, Lazy Donkey Roll, Kite Flip, and Overlord Rod Throwing Style.
They are simply combat techniques.