With a serious expression, Liu Diewu began to explain, "For example, the No. 1 Cave, where you took part in the seed selection, is primarily home to Lower-Rank Apprentice demons. It's the best training ground for our Middle-Rank Apprentice students.
"The No. 2 Cave is mostly populated by Middle- and Upper-Rank Apprentice demons, and it's the usual training ground for our Upper-Rank Apprentice students.
"The No. 3 Cave covers a much larger area with more complex terrain, and numerous Black Iron-rank demons roam within. This makes it the most suitable combat training ground for our senior, Black Iron-rank students.
"Of course, aside from these Caves, the military academy also regularly issues various field combat missions with particularly generous rewards and correspondingly high levels of danger.
"For instance, I previously accepted a mission to clear out a Spatial Fragment."
"A Spatial Fragment?"
