The interior of the Five Emperors' Tower is dry and clean, yes, the words used to describe a mountain cave can apply here. It doesn't seem particularly sacred or special, no peculiarities at all, rather like a massive grotto, vast and empty within, with rock walls lacking the anticipated brilliance and instead appearing plain and unremarkable.
One could say it's utterly unmatched when compared to its legendary reputation before the Ancient Times. Perhaps this is a return to simplicity, a nearly primitive cave, and that is precisely why it can be compared to the Tri-Emperor Mirror—this is the Five Emperors' Tower!
Xiao Chen was almost entranced, staring at the five carved maps on the stone wall, motionless, his mind detached from the flesh, completely immersed in the five carved maps ahead.