Why had Ye Han come to that conclusion?
Because after arriving in the Wild Ancient Land, Ye Han had discovered that the only way to reach it was through the Wild Sea Region.
Moreover, the Heaven and Earth Spiritual Energy in the Wild Ancient Land carried a peculiar wild desolate aura. When ordinary cultivators tried to absorb and refine it, they also took in that aura, which had a significant negative effect on their cultivation techniques.
On top of that, the aura that permeated the Wild Ancient Land year-round exerted an extremely powerful suppression on cultivators' divine sense. Even with divine sense as powerful as Ye Han's, once he entered the Wild Ancient Land, he could sense only a little over a tenth of his normal range.
What was even more frightening was that, because the Heaven and Earth Spiritual Energy here contained that peculiar wild desolate aura, cultivators could not draw upon it to strengthen their treasures and divine abilities.
What did that mean?
It meant that once cultivators reached the Spirit Transformation Stage, the power of their treasures, divine abilities, and secret methods was quite limited if they relied solely on the spell power they had cultivated themselves.
Only by drawing upon and absorbing Heaven and Earth Spiritual Energy could they unleash the full power of their treasures, divine abilities, secret methods, and so on.
The stronger the cultivator, the wider the range from which they could draw Heaven and Earth Spiritual Energy!
But in the Wild Ancient Land, they could not draw upon that Heaven and Earth Spiritual Energy, because the wild desolate aura would disrupt the spell matrices of their spell divine abilities, throwing their spells and treasure abilities into chaos and triggering uncontrollable consequences.
For example, if Ye Han wanted to deploy a sword formation