After flying over the deathly silent gray grassland for nearly half an hour, the unchanging dim scenery around them resembled a frozen oil painting. Only the soundless swaying gray grass beneath their feet proved that they were indeed moving forward.
This kind of deathly silence was itself a form of mental oppression.
Ordinary creatures entering it would likely have long since collapsed under the strain.
Fortunately, Su Bai and the other two were genuine Deity Transformation Cultivators.
Deity Transformation Cultivators were terrifying beings who had cultivated Primordial Spirits. Naturally, they would not be affected by a mere illusion.
Although Su Bai's Primordial Spirit had its senses restricted by the interference of the illusion, as a peak Cultivator with multiple talents, he was particularly sensitive to certain covert stares.
He clearly sensed that deep within this seemingly empty gray grassland, quite a few conscious entities lay in ambush.
Like shadows beneath an undercurrent, they silently peered at the intruders with curiosity and vigilance—and perhaps a trace of imperceptible malice.
These consciousnesses did not seem to belong to corporeal creatures. They were more like beings born from some illusory law derived from this illusion itself, or perhaps natives of the Phantom Sea skilled in illusions and concealment.
Yet whenever those covert stares drew close enough to touch the soft silver halo emitted by the Phantom Sea Invitation Letter, they immediately recoiled as though burned.
Some even conveyed faint ripples of terror before vanishing completely, never to appear again.
Clearly, this "Phantom Sea Invitation Letter," jointly issued by the Dream Tapir Clan and other top tribes of the Mirage Tower Phantom Kingdom, possessed extraordinary deterrence here.
It was not merely a pass; it also represented the "temporary protection" granted to its holder by those powerful forces.
Offending several top tribes at once was