"If killing monsters is the cause, then why didn't this happen when I killed them before?"
Lin Hui was intrigued. Strengthening the Sealing Spirit Array meant increasing his power, so naturally, he was interested.
"Let's test it."
Glancing at the Blood Rhinoceros on the ground, he simply began circling the nearby area.
Before long, he found two more Mist Zone monsters—two Mist Barbarians. One sword each, and they were finished.
But the green eye showed no change at all.
Lin Hui simply continued deeper into the Mist Zone and soon encountered another wandering barbarian, likewise at the dangerous level.
This barbarian monster was far larger than a Mist Barbarian, its brawny body standing over five meters tall like a small mountain. Its defenses were even stronger than the Blood Rhinoceros's, making it a monster extremely close to high-risk among the dangerous class.
It took Lin Hui three strikes to cut off its head, but Nine Eyes still showed no response.
"What's going on?" His brows furrowed tightly as he carefully recalled the differences between his earlier and later killings.
Then a flash of inspiration streaked through his mind.
"Wait!"
Holding Wish-Fulfilling in hand, he stared at the wandering barbarian's corpse, which was still twitching on the ground.
Pfft.
In a sudden motion, he thrust his sword into the barbarian's head, the tip plunging deep into its brain.
Hiss.
The next instant, Lin Hui discovered in delight that another crystal on Nine Eyes upon his shoulder had lit up. This was the third crystal!
"So that's it! This Sealing Spirit Array needs to feed on brain matter to charge up. No—maybe it's not that disgusting. The head is likely where a living creature's spirit resides. What it feeds on isn't brain matter, but the spirit of life!"
A string of guesses