The demon souls at the Void Insight Realm secretly hunted Sand Demons, gathering wu earth energy wherever they went.
After killing the Sand Demons, they swiftly departed and moved elsewhere.
The wu earth energy contained in an ordinary Sand Demon was only a fist-sized clump.
Even after hunting over a thousand ordinary Sand Demons, the amount of wu earth energy they obtained was still limited.
Little did they know that the demon souls' hunt for Sand Demons had brought disaster upon the many cultivators in the Sand Demon Realm.
The Sand Demons' core consciousnesses hid within the yellow sand and were rarely killed.
When they ambushed cultivators, they lost only some energy at most.
As long as they burrowed deep underground and absorbed some wu earth energy, they could quickly recover.
But the demon souls destroyed the Sand Demons' core consciousnesses and took their wu earth energy. This was death in the truest sense.
For a species like the Sand Demons, this was enough to strike fear into them.
When the more powerful Sand Demons saw their companions being killed one after another and their numbers steadily dwindling, their fury naturally soared to the heavens.
Unable to find the true culprits, they simply attacked every cultivator in the Sand Demon Realm, intent on carrying out a sweeping purge.
The smaller groups of cultivators with mediocre strength were the first to be wiped out.
The larger, more powerful groups of cultivators erected formation barriers and joined forces to resist.
Boom! Boom! Boom!
An enormous Sand Demon, a thousand zhang tall, unleashed attacks that relentlessly battered the formation barrier.
Vast numbers of ordinary Sand Demons also unleashed all manner of attacks, surrounding this group of cultivators from every direction.
Among these cultivators was a human immortal incarnation holding the fort.
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