Even though Feng Yuan didn't thoroughly understand the specific situation of the Earth Maze, based on the spirit beasts they've encountered so far, he could basically determine that the Earth Maze increases in difficulty layer by layer, which indeed aligns with the needs of a trial.
Otherwise, encountering an insurmountable spirit beast like the Xuan Turtle right at the entrance would just be causing trouble.
Pressing down the pricked-up ears of the Fluffy Fire Wolfhound, Feng Yuan said irritably to Xiao Ji and the Fluffy Fire Wolfhound,
"Don't think about rushing straight to the bottom. What if you encounter enemies like the Xuan Turtle again? Moreover, normally, the mechanisms in Ancient Ruins shouldn't be that simple. Who knows what troublesome foes we might face later on."
