Anyone who had stepped into the Divine Mountain knew of the might of the eight mountains. Lightning bolts fell, and they were turned into Way of the Heavenly Thunder. They brought about greater lightning powers in them. The attacks would grow even stronger next time.
As such, many who were out to withstand the might of the Heavenly Thunder at the Divine Mountain were unable to bear it toward the end.
Unless the one in question was compatible with the Infernal Thunder of Wutu, enabling the seeds to be planted and completely meld within their body, causing them to develop talents for training in the ways of the Infernal Thunder of Wutu. They would have then inherited one of the eight orthodoxies of the Way of the Heavenly Thunder of Wutu.
Even so, they would be unable to withstand strikes that were just too powerful. As the ordeal went on, the might grew to increasingly terrifying proportions.