Atlas stretched his limbs.
'As I climb, the inherent atmosphere of each floor becomes stronger. This is a mechanism in place so that stronger cultivators do not absolutely decimate the floors when they fight.'
They still had their strength, but it could not affect nearly as large of an area as it otherwise could. The Neutral Zones were the best places to see the extent of one's true strength, but the 11th Floor was something of an exception.
The maximum level of strength on this floor was, of course, the Earth Sage Realm, however, within the Earth Sage Realm one could use the height of one's power.
In other words, standing in this empty building, Atlas spread his qi knowing that it was the first time he was able to use his strength on a larger scale. A blanket of thinly spread qi flowed through the entire space. With the passing of several seconds, the qi heated up into a blaze that consumed the premises.