Li Si gently pressed his right hand against the illusory wall before him, his brow slightly furrowed.
The transparent wall felt like an icy, smooth plane to the touch, unbelievably hard.
Even when Li Si suddenly exerted force, he could not budge it in the slightest.
After a moment of silence, Li Si controlled his magic power and seeped it into the wall before him.
But just as before, the magic power Li Si poured into it vanished completely, as though there were an Abyss Behemoth Maw before him.
Li Si's avatar poured more than half of its magic power into it, yet the transparent wall showed no reaction at all. Only then did he stop.
This should have been the work of the Legendary Mage Ihaileisi?
Li Si stroked his chin and carefully examined the illusory wall before him.
This should have been a special Concealment magic array, capable of absorbing magic power and spell effects below its tolerance limit.
That was why Li Si's detection spell had received no feedback earlier.
Still, the effects of this Concealment magic array were truly remarkable. Even Teacher Stephens did not have a spell with similar effects.
Sure enough, there were still many wondrous spells in this world that Li Si did not understand. At present, he had merely glimpsed a corner of it.
When faced with this type of Concealment magic array, the simplest method was to unleash an attack beyond its tolerance limit and make it collapse on its own.
But Li Si could not use that method right now.
It was obvious enough that this Concealment magic array was very likely the handiwork of the Legendary Mage Ihaileisi. To break through and destroy it would require at least Legendary-level power.
With Li Si's current strength, it was nearly impossible.