This was a cumulonimbus cloud. On Earth, its cloud base would generally be around 400 to 1,000 meters high.
Feng Wu was not sure whether the cumulonimbus clouds in the arena differed from those on Earth, so he did not dare guarantee that there was definitely something wrong with this cloud layer.
But one thing was certain: they had wasted far too much time within the clouds.
That was also why he was suspicious. But after all, this was not Earth, so he did not speak too definitively. The two continued climbing upward. Ou Zhizi had clearly grown anxious and began climbing with all his strength regardless of his stamina expenditure, the frequency with which he swung his grappling hooks greatly increasing.
Ou Zhizi used grappling hooks attached to iron chains. With every swing, he could carve into the mountainside above. Given Ou Zhizi's strength, as long as there was a point to leverage against, one pull of his arm would send him shooting upward. Then he would swing out the hook in his other hand, while the one he had thrown before was reeled straight back in.
His climbing method consumed tremendous strength, but if one's power was great enough and one's explosive force astonishing enough, its efficiency would be extremely high.
Feng Wu climbed upward with all his might, yet Ou Zhizi gradually left him behind. In the end, he was the only one still climbing alone through the clouds.
The fierce wind and fine rain soaked the mountain wall. Feng Wu had no choice but to alter his hands, giving his palms immense adhesion and even lengthening his fingers considerably.
A normal adult man's fingers were only around eight to fifteen centimeters long, depending mainly on his build.
Feng Wu's fingers had originally been roughly twelve centimeters