On the True Profound Continent, the hierarchy of weapons is quite simple, known as Mortal Weapons, Artifacts, and Spiritual Artifacts, spanning these three main grades.
Whether it's Mortal Weapons, Artifacts, or Spiritual Artifacts, they are generally divided into Supreme, High, Mid, and Low Grades. There is absolutely no comparison between weapons of different grades. Even weapons of the same grade can vary greatly in power depending on their quality.
For example, two martial artists with the same martial skills, if one possesses a Low Grade Artifact and the other does not, the one with the Low Grade Artifact will surely win.
The Illusion Serpent King Armor on Ye Zhen, although impervious to water and fire and immune to swords and sabres, still belongs to the sequence of Mortal Weapons and is barely considered a Supreme Mortal Weapon.
However, even a Supreme Mortal Weapon is no match for an Artifact.