There were two experimenters who had advanced to Great Knight status, one of whom was always a Great Knight, Orkot.
In fact, among the first batch of testers, he was the only one who survived, and he had not yet used the cave factors.
The other was a novice Knight named Abner—essentially, he could be treated as an ordinary person.
Orkot first practiced the Nameless Breathing Skill, then retrained the Giant Mountain Breathing Method to the Great Knight stage.
The main reason Abner was able to advance to Great Knight so quickly was due to the cave factors.
The cave factors, specifically extracted by Colin, were astonishingly effective in aiding the practice of the Giant Mountain Breathing Method.
Abner, whose talent was initially mediocre, succeeded in advancing to Great Knight in just half a year, a speed that could rival Colin's initial rapid advancement with the aid of Golden Paper!
In the silvery-white room, Colin was checking on Abner and Orkot one by one.