The Profound Extreme Mountain Range was vast beyond measure. According to the records, it spanned three to four hundred thousand li. Not only was there not the slightest trace of spiritual energy anywhere in this enormous region, but it was also shrouded in poisonous fog all year round.
Just these two points alone had already made the Profound Extreme Mountain Range an extremely dangerous place.
At this moment, five of the most top-tier Immortal Lord cultivators in the Immortal's Remnant Land had personally arrived before the Profound Extreme Mountain Range. They were immediately shaken to the core by the land before them.
For a hundred li around the edge of the vast, fog-shrouded region, not a single plant grew anymore. There was not even the slightest trace of life. Everything seemed utterly lifeless.
As they drew closer to the mountain range enveloped in fog, the peaks and rocks within sight gradually became black and savage-looking.
"Even though we are still dozens of li from the fog-shrouded region, such powerful corrosive force already exists in the air here. The poison within that fog must be unimaginably fierce. Fellow Daoist Pan, are you certain the Jade Emperor Umbrella can block that powerful poisonous fog?"
Gazing toward the land ahead, all of them wore dark and solemn expressions. After a moment, Bu An finally spoke.
"Fellow Daoist Bu, rest assured. The main material of this Jade Emperor Umbrella is not merely Primordial Stone. It also contains dozens of precious materials specifically capable of resisting various poisonous attributes. Although its offensive power is difficult to compare with powerful ancient treasures, it absolutely will not disappoint us when resisting attacks of various poisonous attributes."
After looking ahead for a long while, Pan Qingkang's handsome face also showed solemnity, but his words remained firm and steady.