The first five Heavens of the Highest Firmament were all about the five elements. Each time the court's Lords reached a layer, they were attacked by the environment and by physical manifestations created from said environment. The climbing process was smooth, but not as smooth as the Heavenly Wolf Khan had expected.
The sixth Heaven was a world of the Five Elements, perfectly combining the advantages of the previous five floors. More importantly, the elemental creatures of that layer were already waiting for their arrival. As soon as the Tribunal Lords appeared, the guardians activated an array that beautifully displayed the working relationship of the five elements, catching the Tribunal Lords off guard; they had to put in a decent amount of effort to escape. From that moment on, they were even more careful, which was the right choice since every guardian in each layer was already prepared for a confrontation.
