The deepest part of the third layer of the Body Tempering Tower.
The space here was exceptionally dim, with layers upon layers of black thunderclouds.
Bolts of lightning tore across the sky like enormous flood dragons, their terrifying thunderous might making heaven and earth tremble.
At this moment, several figures stood in the air amid the raging lightning. They were Zong Lin, Han Yue, Tian Feng, and the others.
In the distance, the thunderclouds seemed to have gathered into a cloud platform tens of thousands of feet wide.
Behind the cloud platform, countless streaks of light swept across the sky like meteors.
As Zong Lin and the others watched those meteor-like lights, their expressions could not help but turn grave.
They could all sense that drops of liquid shimmering with lightning were gathered within those meteoric streaks.
"Is that... Lightning Marrow?"
Lightning Marrow was something born only when the power of lightning between heaven and earth had condensed to a certain degree. It possessed miraculous effects for cleansing the marrow and reshaping the bones, and it could also refine one's body. Its value was in no way inferior to Blood Spirit Mud.
The greed in Zong Lin and the others' eyes grew even stronger.
The Lightning Marrow lay behind the Thundercloud Platform. Clearly, to obtain it, they would have to pass through this platform.
And this was the barrier leading to the Fourth Layer.
Only by breaking through this place could one enter the Fourth Layer of the Body Tempering Tower!
Zong Lin and the others looked beyond the Thundercloud Platform. There, five lightning Cushions about ten feet wide gleamed.
Those five lightning Cushions represented the slots for entering the Fourth Layer.
In other words, half the people would be eliminated on this Thundercloud Platform.
Such rules were truly cruel.