The conditions in the Blood River Secret Realm Inner Area were completely different from those at the Riverbank Edge.
First, the vegetation had returned to normal, and the view was wide open.
Moreover, the inner area stretched beyond the eye's reach. The search area was enormous, and the spirit medicines grew more scattered, requiring far more effort to find.
Across such a vast expanse, not only did one have to toil through the search, but finding spirit medicines along the way also required a bit of luck.
Some disciples with Wood Spirit Roots held a greater advantage in situations like this, where they searched for spirit medicines.
Although spirit medicines possessed different medicinal properties, at their core, they were still Wood Attribute spiritual objects.
They converted the Spiritual Energy around them into Wood spiritual energy before absorbing it.
Therefore, wherever spirit medicines grew, Wood Attribute Spiritual Energy was naturally more active.
Disciples with Wood Attribute Spirit Roots were more sensitive to Wood spiritual energy and could sense it over a wider range.
This was also the experience Su Bai had summed up during his search. He now possessed a Fire Wood Dual Attribute Spirit Root, which happened to include a Wood Spirit Root.
And because Su Bai had a Dual Attribute Spirit Root, his senses were affected only by Fire Attribute Spiritual Energy. Naturally, his perception of Wood Attribute Spiritual Energy was more accurate and clear.
Thus, Su Bai spread out his search through the surroundings, closing his eyes as he sensed.
Although the inner area was far from the riverbank, the energy seeping over from the Blood River was still considerable. The spirit medicines were inferior to those at the Riverbank Edge in grade, but they made up for it in quantity.
Very soon, Su Bai's diligent sensing bore