The first thing that made this obvious was the countless training weapons lining the walls.
Swords and Spears were the most common type of weapon but there was still an abundance of all sorts of weapons.
Sabers, shields, halberds, hammers. You name it; it was there.
The weapons were training weapons so they were naturally all wooden weapons but by looking closer you could see that several of the wooden weapons had different weights towards them marked above their head.
The purpose of this didn't even need to be said. The difficulty of wielding a sword that wielded 10kgs and 100kgs was obvious to anybody.
Besides all sorts of training weapons, you could see all sorts of training equipment in the place.
Looking at it like this, it wasn't too dissimilar from a modern day gym.
There were all sorts of free weights and bench presses spaced out in an orderly fashion.