Between heaven and earth, a massive Undead Monarch stretched across, surrounded by darkness as thick as ink, like an insurmountable black barrier.
That darkness, like an overflowing sea, surged and spread across the land.
Wherever it reached, all things lost their color!
Fear permeated the air, and everyone's expression was solemn, a sense of tension like an invisible net tightly enveloping them.
Although the true face of the Undead Monarch was hidden in the darkness, making it difficult to discern.
The powerful oppressive aura it emitted made everyone clearly realize that this was an incomparably powerful monarch!
Black waves rolled in, a new wave of Undead System, fiercer and more threatening than ever before!
"Roar~~~!~!~!~!~!"
The Undead Monarch roared to the sky, its voice like rolling Thunder, sweeping in with a world-destroying momentum, shaking the city wall violently, as if it would collapse in the next second.
Under its command, a new Undead System attack began.
The boundary between life and death was infinitely narrowed at this moment; this was a decisive battle between the living and the dead!!
The battle erupted again, and everyone pushed themselves to their limits under the impact of the Undead System wave, almost exhausting the magic energy within their bodies.
This time, Servant-level undead were still endless, the number of Battle Commander-level undead increased significantly, and Commander-level undead also multiplied.
The Military Law Enforcer's pressure surged.
"Boom~~~Crack~~~!"
Jiang Yuan continuously slammed Ice Burst spells into the Undead System wave.
But the surging wave, like a greedy black hole, instantly devoured his attacks without leaving a trace.
Only by personally experiencing this desperate scene would one understand what powerlessness felt like, every effort seemed like a stone sinking into the sea, unable to stir up a single ripple.
But even so, the mages on the city wall still held their ground, selflessly protecting everything behind them!
They had long been accustomed to such battles, day after day.
Fortunately, the Undead Monarch in the distance seemed to have some reservations, remaining stationary and not stepping a single half-step onto the battlefield.
Jiang Yuan had never felt the night to be so long, as if imprisoned by endless darkness.
The defending Military Law Enforcer on the city wall had already rotated several shifts.
The city wall, winding like a giant dragon, still stood tall, but a few breaches had appeared, though fortunately, they were not serious.
After Jiang Yuan's Water System magic energy was depleted, he retreated to the rear for a short rest, and as soon as his magic energy recovered slightly, he immediately plunged back into the battle.
The high-intensity combat made his control over Water System magic increasingly proficient, and at the same time, it made him deeply realize the limitations of Water System magic in terms of offense.
If he had used Thunder magic, it would have been much easier.
However, exposing his Thunder ability just for an ordinary city defense battle would be more trouble than it was worth.
As long as Monarch-level undead did not participate in the battle, the victory of this defense battle would surely belong to humanity!
The long night finally passed.
The glorious sun rose, and dawn broke.
The moment the first ray of dawn shone upon the earth, all the undead retreated like a tide, leaving behind only devastation and a mess.
"Phew," Jiang Yuan let out a long breath.
It's finally over.
An entire night of highly intense combat; if he hadn't possessed strong mental power and exceptional physique, he would probably have had a headache for some time.
However, he gained a lot from the night.
Another large sum of spirit essence was added to his account!
"Hmm?" Jiang Yuan suddenly looked towards the location where the Three-Eyed Underworld General had been.
It was empty there.
"What the heck? Where did the Three-Eyed Underworld General go?"
Jiang Yuan was startled and quickly used Undead System Summoning to try and sense the Three-Eyed Underworld General's location.
Finally, he detected the Three-Eyed Underworld General's aura beneath the city wall.
Jiang Yuan leaned out and looked down from the city wall.
He saw countless undead shattered flesh and bones piled up, densely packed, making it impossible to see the Three-Eyed Underworld General's figure, only its approximate location could be determined.
But it didn't matter; he could just send it back to the Underworld.
Jiang Yuan activated his Undead System magic energy, but his brows gradually furrowed.
The Three-Eyed Underworld General was still slowly and continuously consuming his magic energy.
There was only one possibility for this situation—
The Three-Eyed Underworld General was still in the main plane, needing to rely on his magic energy to sustain its existence.
He couldn't send the Three-Eyed Underworld General back to the Underworld!
"What's wrong?" Qin Yun, who had finished fighting, walked over and asked.
Jiang Yuan turned his head: "I just tried to send the Three-Eyed Underworld General back to the Underworld, but it didn't work. It seems something is preventing its return."
Qin Yun's brows also furrowed tightly upon hearing this: "Where is the Three-Eyed Underworld General now?"
"It fell down." Jiang Yuan pointed to the towering pile of corpses outside the city.
"Let's go, I'll go with you to look outside the city." Qin Yun said, then pulled Jiang Yuan and quickly walked down the city wall.
Outside the city wall, after a night of fierce fighting, corpses lay everywhere, and a putrid smell rose into the sky, making one nauseous.
If these undead corpses were not cleared in time, the stench would drift into the city, severely affecting residents' lives and potentially even causing plagues, leading to greater disaster.
Therefore, as soon as the battle ended, the cleaners, who had been on standby, quickly came outside the city to begin clearing the battlefield.
As soon as Qin Yun and Jiang Yuan walked out of the city gate, a pungent stench assailed them.
Both instinctively covered their mouths and noses.
"Where is the Three-Eyed Underworld General's location?" Qin Yun asked.
Jiang Yuan concentrated and sensed for a moment: "Over here."
The two came to a pile of corpses several stories high.
The Three-Eyed Underworld General was in the center of this corpse pile, suppressed by layers of skeletons, unable to move.
Qin Yun found cleaners nearby and asked them to clear the corpse pile in this area first.
As the severed limbs and rotting flesh were slowly removed, the Three-Eyed Underworld General finally appeared before them.
But the sight before him made Jiang Yuan freeze; the originally majestic Three-Eyed Underworld General was now just a lonely skull.
Jiang Yuan was dumbfounded, lifting the Three-Eyed Underworld General's heavy skull, he blurted out: "Where did your body go?"
"Click-clack... Click-clack, click-clack, click-clack!"
The Three-Eyed Underworld General's jaw kept opening and closing.
Jiang Yuan quickly understood its meaning and said in shock: "Your body completely fell apart, and you don't even know where it's scattered???"
This was simply the most absurd thing Jiang Yuan had encountered recently.
Not only could the Three-Eyed Underworld General not return to the Underworld, but it was also just a white bone skull!
"Something's wrong, let me see its skull." Qin Yun had been observing for a long time and suddenly spoke.
Jiang Yuan held up the skull for Qin Yun to examine.
A moment later, Qin Yun looked up: "I might know what happened."
"What happened?"
Jiang Yuan was a little flustered; if the Three-Eyed Underworld General couldn't return to the Underworld, it would continuously absorb his magic energy.
Even if his Undead System magic energy was drained, it would passively continue to absorb to maintain its existence.
Then what it absorbed wouldn't be magic energy!
"Look at its third eye," Qin Yun reminded him.
Jiang Yuan focused his gaze.
The eye socket, which should have been empty, now contained a small wisp of eerie purple flame.
The flame was identical to the Three-Eyed Underworld General's own green ghost fire!