Force distribution is an extremely complex matter, and Duke couldn't control this process.

This caused a flow change in the force distribution within the rock layers during his absorption of the mineral veins here, leading to a cave-in elsewhere.

Those hiding deep in the front tunnel had to come out after discovering the cave-in.

By this time, Duke had already refined nearly a ton of Golden Scale Celestial Iron, surrounded by countless sand grains glistening with metallic luster.

He stared intently at the front of the tunnel, and as the footsteps gradually approached, the figures of these people became visible.

It was a squad of Green-skinned Orcs, six in number, wearing simple leather armor, with swords and other weapons in their hands.

Judging from their attire, they were likely former guards of Moon Shadow City, probably escaping here amidst the war.

This tunnel was quite hidden, probably making them think it was safe to hide here, which is why they ran to this place.

But unexpectedly, a sudden cave-in occurred here, and upon rushing out, they saw Duke.

Seeing Duke, a surge of anger welled up inside the six Orcs, a fury filled with extreme hatred.

They immediately recognized Duke as one of the intruders from another plane, as neither his appearance nor attire matched the natives of the Beastman Plane.

It was these foreign invaders who occupied their homeland and slaughtered their kin.

In seeing Duke, how could these Orcs not be angry? Seeing that Duke was alone, with no particularly strong aura around him, they immediately charged at him, brandishing their weapons, intending to cut Duke into pieces to vent their pent-up frustration.

Duke sensed the aura of these Orcs; none of them were first-level beings, with the strongest only comparable to advanced magical beasts.

"Just perfect for a test," he said, surrounded by yellow and black sand.

Even after a ton of Golden Scale Celestial Iron had reinforced it, the sand was not much, less than a cubic meter.

Due to the narrow tunnel and the burly nature of these Orcs, only one could dash forward at a time.

The Orc leading the charge held a long knife, muscles bulging, and swung the blade toward Duke's neck.

Duke stood still, unmoving, as the surrounding yellow sand surged forward, tightly wrapping the Orc.

The sand acted like a gigantic hand, firmly immobilizing the Orc.

Despite the Orc's strong physique and power, it was unable to break free from the sand's grasp.

With a slight clench of Duke's palm, the sand constricting the Orc began to shrink, transmitting a colossal compressive force onto the bound Orc.

The Orc withstood the pressure for only a moment before the bones within its body began to fracture extensively, the sound of breaking bones echoing continuously, with internal organs also shattering under the immense pressure.

The Orc instantly spewed blood, with blood seeping out from all over its body.

After sustaining such grievous injuries, the Orc died on the spot, experiencing sudden death.

Duke manipulated the sand as easily as crushing an insect, effortlessly killing an Orc comparable to an advanced magical beast.

He had not yet conducted experiments to measure precise data, but from the effects demonstrated just now, it could be estimated that the strength of the Gravity Yellow Sand had surpassed thirty degrees.

Previously, the strength of Gravity Yellow Sand generally hovered around nineteen degrees, reaching a maximum of twenty-three degrees with the infusion of magic power.

But even without fully infusing magic power now, the strength of the Gravity Yellow Sand had already reached thirty degrees.

This is the strength of the sand after absorbing Golden Scale Celestial Iron, resulting in a qualitative leap for this magic.

The sand within the Yellow Sand Crystal, enhanced by Golden Scale Celestial Iron, could also house more magic power.

Duke felt that the upgraded sand could contain an extremely high amount of magic power; even by infusing all his magic power, he couldn't reach its upper limit.

After a quick calculation, he found that if he infused all his magic power into the sand grains now, the strength of Gravity Yellow Sand could even exceed forty degrees.

And this was just the beginning of the magic metal absorption, allowing for such an improvement, with further advancements possible later on.

Even the sand with already enhanced quality could continue to improve.

However, Duke needed to first increase the amount of sand, letting more sand devour the magic metal, requiring at least five tons of such sand refined for daily combat needs.

Once he gathered five tons of magic-metal-enhanced sand grains, Duke could consider whether to continue using the magic metal to refine more sand or to further enhance the existing magic-metal sand grains.

As Duke pondered these matters, he retracted the sand binding the Orcs, keeping it circulating around him.

He hadn't moved throughout the entire process, standing still, not even sparing a glance at the Orcs.

The remaining five Orcs were subdued by Duke's display; they couldn't comprehend this kind of power.

But now, with no retreat as they met on a narrow path, their only chance of survival lay in desperately fighting forward.

Duke, controlling the sand as before, systematically eliminated the Orcs, while keeping some sand guarding around him for defense.

Seeing no hope of reaching Duke, one Orc threw its long knife, attempting to pierce Duke's heart.

However, sand quickly coalesced into a shield before Duke, blocking the flying knife.

This scene brought a trace of despair to the last two Orcs alive; they realized they couldn't contend with this enemy at all.

The bizarre sand abilities of the opponent left them helpless, the enemy not even needing to move a step from the original place to kill them all.

The last two Orcs exchanged a glance and turned to flee.

Knowing they didn't stand a chance, to continue fighting would be akin to sending themselves to death.

With a few forks behind in the tunnel, they could only split and run, hoping to find another way out within the tunnels.

Of course, Duke wouldn't let them escape. A long band of sand flew out like a toad's tongue, directly ensnaring a fleeing Orc.

Amidst cracking bone sounds, another corpse fell to the ground.

The last remaining Orc also failed to escape death, its speed no match for the flying sand, quickly being caught and eliminated.

The tunnel once again returned to peace, the humid air now mingling with the thick smell of blood; blood trickling along the ground's patches, gradually flowing into the depths of the tunnel, as if someone had drawn a long stroke using blood as ink.

Duke hurriedly continued absorbing Golden Scale Celestial Iron veins, realizing the structure here was becoming increasingly unstable, leaving him with little time.

The content of Golden Scale Celestial Iron in the ore was too low, even though the Yellow Sand Crystal could absorb it with utmost precision, the efficiency remained low.

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