Rustle...
The instant this thought surfaced in Lin Mo's mind, the Azure Emperor's Pharmacopoeia within the spatial barrier began flipping again. Its pages seemed swept by a raging wind, blurring into a vast swath of afterimages.
Once, twice, three times...
The more Lin Mo watched, the brighter his eyes grew.
A formation!
As the pages of the Azure Emperor's Pharmacopoeia flipped, the medicinal herb illustrations within them faintly formed an enormous, exceedingly intricate formation diagram!
Using plants as formation bases, and the pages and the lines of the illustrations as formation patterns... it seems to be some kind of sealing formation!
Understanding soon dawned on Lin Mo.
Though the Basic Formation Diagram Guide that Cloud Crane High Person had given him years ago only covered low-grade formations, it classified every type of formation in meticulous detail.
In Lin Mo's eyes, the formation hidden within the Azure Emperor's Pharmacopoeia closely resembled the sealing formations mentioned in the Basic Formation Diagram Guide. It was simply far more complex, surpassing those basic formations by an unknowable number of times!
To unleash this grand formation's full power, I have to gather all four thousand six hundred kinds of spirit plants...
Lin Mo gathered his thoughts and stopped watching the Azure Emperor's Pharmacopoeia, unable to keep from smiling bitterly to himself.
As things stood, collecting every spirit plant was utterly impossible.
He might be able to find a way to obtain the spirit plants listed at the beginning, but it was hard to say whether the remaining four thousand-odd kinds even existed on the Divine Continent. Many might even belong to the Upper Realm. How could he possibly find them?
*I already understand every variation of this grand formation's patterns. Though I can't unleash its full power, I can substitute Azure Sun Vine tendrils for