All equipment, cultivation techniques, and life skills in this game are divided into five tiers.
That is, the classic white, green, blue, purple, and orange.
However, the terminology differs.
Equipment:
Common (white), Fine (green), Excellent (blue), Epic (purple), Legendary (orange).
Some might think that "Fine" should be blue and "Excellent" should be green, as that is indeed how World of Warcraft sets it up. However, when the author was a child, a score of 80 or above was considered "Fine," while 90 or above was "Excellent." Subconsciously, I felt that "Fine" was inferior to "Excellent," so I set it up the opposite way from World of Warcraft.
Therefore, I hereby clarify: Fine is green, and Excellent is blue.
Additionally, there is a very rare type of equipment—Top-tier (blue-purple). These are generally Epic equipment that has been damaged or Excellent equipment that has been upgraded, such as [Damaged Nether Soul Iron Armor (Chestplate/Top-tier)] and [Damaged Ghost General Iron Halberd (Spear/Top-tier)].
These two should originally have been Epic-tier, but because they are damaged, they have been downgraded by half a tier. Such equipment is relatively rare, so I am noting it here.
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, while most combat techniques have varying requirements for learning, they generally do not display a grade, such as Whirlwind Slash, One Cut Two Pieces, Lazy Donkey Roll, Kite Flip, and Overlord Rod Throwing Style.
They are simply combat techniques.