Undercurrents Surge

The destruction wrought by Xingtian's axe was devastating.

Thunder's tail whip this time had used all its strength, but its power was even less than a normal tail attack!

"Roar!"

Accompanied by Thunder's miserable roar, Yu Xiao could feel the opponent trying to wrench its tail free from his grasp!

"Hmph, trying to escape!"

A silver chain sword drilled out from under Xingtian's arm, coiling around Thunder's massive tail like a venomous snake!

Immediately after, Xingtian plunged its great axe into the shallow sea, grabbed the massive tail with both hands, and began relentlessly pulling Thunder towards itself!

Thunder, lying in the water, wailed incessantly. Its remaining beast claws flailed on the sea surface, but it couldn't find anything to grip!

No matter how Thunder struggled, the speed at which it was dragged towards Xingtian did not diminish in the slightest.

In just ten passes, Xingtian had already dragged Thunder's enormous body in front of itself!

Only then did Xingtian finally release its hands and retract the chain sword.

THUMP!

But what followed was Xingtian's massive foot stomping on its tail!

Even though Xingtian had changed its stance, Thunder was powerless to break free—it had exhausted all its strength in its struggles.

And Xingtian picked up the great axe stuck in the shallows again, raising it above its head!

[Overload Mode Activated]

As the system prompt sounded, the power core on Xingtian's chest transformed from a low hum to a frenzied roar!

The crimson light gradually turned blood red!

Yu Xiao could feel every muscle unit in his body yearning to unleash that surging power!

The scorching sea breeze, the endless mountains of corpses, the shattered mechs, and the mournful cries of Thunder under Xingtian's feet.

He was no longer that old, first-generation mech.

BANG!

This strike pierced stone and split clouds, shaking the earth!

The black great axe deeply embedded itself into Thunder's skull, its sharp edge piercing directly out from Thunder's chin!

"DIE!"

Yu Xiao roared, his hands gripping the black axe handle tightly, dragging the axe along Thunder's hardened spine all the way to its tail!

Flesh, scales, and bone turned into viscous debris that seeped into the sea under the great axe's cut!

Thunder's majestic, mountain-like body was split in two by Xingtian!

WHIRRR!

As Xingtian withdrew the great axe from Thunder's corpse, the heavens and earth seemed to resonate with him!

On the Truth, everyone was shocked and excited by the scene before them!

Xingtian had defeated a Level 4 monster in a one-on-one fight!

This was a feat humanity had never accomplished before!

[Detected unique target kill: Thunder. System has sent equipment module "Black Armor" to your mailbox.]

[Detected increase in your reputation. Mech Soul level has been upgraded to: Level 2.]

"Mailbox?"

Just as the system prompt popped up, Yu Xiao felt something appear within his power core.

Indeed, after Yu Xiao closed his eyes, he saw the information regarding "Black Armor."

[Module Name: Black Armor]

[Module Source: Defeated unique target - Thunder]

[Module Description: The scales from the monster Thunder are extremely light and can cover the mech's surface in a living state. Their toughness is comparable to pure artificial giant force alloy. When Black Armor receives a physical attack, it will reflect 30% of the kinetic energy of that attack back to the attacker.]

[Note: Equipping Black Armor will automatically replace the mech's currently equipped external armor. The replaced armor will not be returned.]

After reading the description, Yu Xiao unhesitatingly released "Black Armor" from his power core—his heavy armor was already in tatters.

The black fluid once again seeped out from the power core, completely enveloping Xingtian's chassis. Yu Xiao could also feel that his original armor had been completely destroyed by this fluid, replaced by a "organ" that Yu Xiao could control covering the surface of his chassis!

In just a few seconds, the black fluid retreated back into Xingtian's power core, and Xingtian's previously damaged armor was completely replaced by a layer of thick, dense black scales!

When Yu Xiao opened his eyes again, he could even feel his scales "breathing"!

Now he was certain that his strength was sufficient to contend with these Level 4 monsters.

But when Yu Xiao's gaze turned towards the distant sea zone, he found that the other two Level 4 monsters showed no movement at all!

The Siren and the Avenger stood as if they were two sculptures, maintaining an extremely bizarre upright posture.

In fact, from the moment Xingtian began battling Thunder, Yu Xiao had kept an eye on the other two Level 4 monsters. But until he killed Thunder, the Siren and the Avenger had shown no intention of moving.

Now, the entire coastline was plunged into an oppressive, deathly silence.

On the True Will, many technicians had noticed this phenomenon, but at the time, everyone's attention was focused on the battle between Xingtian and Xunlei, so they temporarily ignored it.

But now, the Sea Monster and the Avenger had completely disappeared from the energy radar!

This could only mean one thing.

The Sea Monster and the Avenger were dead.

"Dr. Yuan, what should we do now?" The adjutant voiced the question in everyone else's mind. "All the monsters are dead, but the energy fluctuations are still spreading."

Yuan Zhen shifted his gaze from the battlefield below to the digital model, which was about to be completed in thirty seconds.

"Wait a little longer."

On the shore, Xingtian stood guard next to Xunlei's corpse, holding a giant axe.

Yu Xiao had also sensed that the other two Level 4 monsters were dead.

But how had they died?

All the monsters that had appeared had been killed, but why hadn't the largest Level 5 energy source shown itself yet?

Why had the Alliance not issued any warnings or reactions to such a large-scale monster migration?

A myriad of questions flooded Yu Xiao's mind. He had a vague sense that something was wrong, but he couldn't connect the clues.

Drip!

Xingtian suddenly looked down at Xunlei at his feet!

Dark green beast blood was flowing into the sea.

It was only then that Yu Xiao suddenly remembered a conversation he had overheard when he first transmigrated, a question a newly recruited maintenance apprentice had asked Old Yu.

"Why are we spending so much money to build mechs to fight monsters? Isn't using nuclear bombs more convenient?"

"Kid, how can you not know this? What did you learn in your induction training!" Old Yu's expression was very serious. "Monster blood itself is a highly unstable energy form. Once you attack it with a high-energy weapon, the unstable beast blood will become a powerful catalyst, amplifying the entire reaction by hundreds or even thousands of times!"

"Ah! Then if we used nuclear bombs, wouldn't that..." the apprentice's eyes widened.

"Why do you think the city clusters in the Hain country, which was the first to be attacked by monsters, disappeared overnight?"

Cold sweat beaded on the apprentice's forehead, and he decided not to ask any further questions.

A strong sense of unease welled up in Yu Xiao's heart. He immediately controlled Xingtian to turn around and look at the sea of corpses and blood on the shore!

All the beast blood was flowing in only one direction.

The deep sea zone!