Twenty minutes later.

On a hill near the garrison of the 6th Panzer Division of the 35th Army.

Xiao Yu sat cross-legged on a clearing at the top of the mountain, and his consciousness stretched out like mercury.

According to the information provided by Liu Wei, that secret underground base is just below this military camp!

In the barracks below, the lights were bright, and tanks and armored vehicles were galloping back and forth in the camp, apparently conducting night tactical training.

Double posts were added at the entrance of the barracks, and in this case, it was even more difficult to sneak into the heavily guarded troop garrison than to ascend to the sky.

But......

Xiao Yu's expression did not move at all, and his divine sense continued to extend underground......

Ten meters!

Twenty meters!

Thirty meters!

……

Fifty meters!

Xiao Yu found that a large amount of reinforced concrete was poured into the army camp fifty meters down, presumably to prevent the attack of the giant ground-penetrating bomb.

The consciousness continues to extend......

One hundred meters!

One hundred and fifty meters!

Two hundred meters!

……

Finally!

Two hundred and fifty meters underground, a huge underground base was revealed in Xiao Yu's mind.

Rao is Xiaoyu was mentally prepared in advance, but at this time, he couldn't help but be shocked in his heart, this underground base is a miracle, it is really unimaginable, how much manpower and material resources are required to build such a huge building in such a deep underground!

The entire underground base has about ten floors, and on the periphery of the base, a steel wall with a thickness of ten feet is poured into it, like a huge bank safe, which firmly protects the entire underground base.

In addition, Xiao Yu found that this layer of steel wall seemed to have the effect of weakening the divine sense, Rao was that he devoured the divine consciousness of the young man in gorgeous clothes, and the divine consciousness had increased greatly compared to before, but when he penetrated this steel wall, the loss was extremely great, and he could not continue to scan the inside of the base.

That's enough, though.

Xiao Yu retracted his sense, stood up from the ground, took out the ground compass from the storage bag, aimed at the ground, an earthy yellow light shot out from the ground compass, and a bottomless crack suddenly opened on the ground, Xiao Yu's mouth spewed out the 'green wing' flying sword, a ball of blue light flashed, and the person had already sunk into the crack on the ground.

With the help of the compass, Xiao Yu walked through the underground without hindrance, and after a while, he found the stratum where the underground base was located.

Outside the steel wall about the fifth floor or so, Xiao Yu stopped his figure.

According to the information provided by Liu Wei to himself, the freezer where the 'shadow' is stored should be placed on the fifth floor of the underground base, and he tried to scan it with his divine sense, but he still couldn't get the internal information smoothly, Xiao Yu's eyes narrowed slightly, and he took out the 'Golden Essence Cracked Empty Sword' from the storage bag.

Of all his magic weapons, this flying sword was the sharpest, and it was used to cut a hole in the ten-foot-thick steel wall that could accommodate his own entry and exit.

The pale golden energy in his body surged, and the 'Golden Essence Splitting Sky Sword' emitted a dazzling brilliance, and under Xiao Yu's urging, it slashed past the steel wall in front of him.

The material of this steel wall has obviously undergone special tempering, and it is extremely tough, even though Xiao Yu's 'Golden Essence Cracked Sky Sword' is extremely sharp, it took a full five minutes to drill a hole in this steel wall.

This time he urged the 'Golden Essence Splitting Sky Sword', which consumed a lot of pale golden energy in Xiao Yu's body, and during this time, he had to stop halfway to rest and use the high-grade spirit stone to replenish the lost energy.

Looking at the big hole in the steel wall in front of him, Xiao Yu did not rush in, but scanned it with his divine sense again.

Without the barrier of the steel wall, the divine sense easily penetrated into the interior of the underground base......

This floor is the size of two football fields, and the areas with different functions are clearly separated and orderly, although it is already two o'clock in the morning, but in the underground base, there are still many people in white overalls who are nervously busy, each doing their own work at hand.

Xiao Yu was patient and scanned the rooms one by one.

Finally!

In the northeast corner, a room of five or six hundred square meters was found, and in this room, more than a dozen silver freezers were impressively placed.

"This is it!"

Xiao Yu's heart jumped, and he wanted to scan it with his divine sense to see which person in the freezer was 'Shadow', but as soon as his divine sense touched the silver freezer, it immediately scattered and could not penetrate at all.

Obviously, the silver freezer is in operation, and it has an effect similar to electromagnetic interference.

Xiao Yu couldn't help but be a little disappointed in his heart, and just as he was about to retract his divine sense, he suddenly found that next to this room, there was a bigger room than this room.

In this room, there are seven huge wooden boxes side by side, the smallest one is also five or six meters long, and the largest one of them is obviously much larger than the others, and the length has reached ten meters!

Xiao Yu's heart moved, and faintly, he seemed to hear the contents of these wooden boxes calling to him.

"It's ......"

Xiao Yu's heart was shocked, and his divine sense scanned into a wooden box.

This time, there was nothing hindered, and the contents of the wooden box were clearly presented in front of his eyes.

It was a giant made entirely of metal, about seven meters long, with a ghostly glow all over its body, and its elbows, knees, shoulders and other key joints were equipped with hideous barbs, and on its head, there was a single horn half a meter long.

Although it lay there, one could still imagine how powerful it looked when it stood up.

"Thunder!"

Xiao Yu recognized at a glance that this metal giant was one of the high-level mecha in the underground base of the mysterious valley - 'Thunder'.

'Thunder' was a high-level melee mecha, and with his level back then, he naturally couldn't control it, but he was impressed when he saw a partner of the 'Heart Group' once drive it to defeat the siege of three mid-level mechs.

The Divine Sense continued to scan the other wooden boxes.

"Ice shuttle!"

"Hawkeye!"

"Meteorite!"

"Longbow!"

……

Familiar metal giants appeared in his mind, and familiar names crossed through his mind, as if opening one door to time and space after another, making him in a trance, reminding him of the days when he lived in the underground base. Although I was despised and bullied by my teammates back then, looking back now, those days were the most carefree time in my life.

And now, he is alive, and those people are gone forever.

When Xiao Yu's divine sense swept into the largest wooden box, his heart shook wildly, although he had already expected what would be contained in this wooden box, but when he saw it, he still couldn't control his thoughts.

It was a metal giant with a length of ten meters, and its appearance was extremely powerful, like a demon god-like metal giant, this metal giant was shining with blood-colored red light all over his body, and he didn't know if this red light was the material of the metal itself, or because he had killed too much and was contaminated with it, which made people shudder.

Its face, except for the part of its eyes, was completely obscured by metal visor, revealing a cold and mysterious aura, and Xiao Yu knew that when these eyes lit up, there would be only blood and killing left in this world. No one can stop it.

It was it back then, forcibly separating itself from the 'shadow'.

"God of Killing, we're meeting again......"

Xiao Yu took a long breath, withdrew his divine sense, and muttered with a complicated expression.