Coming to the location of the level 2 dark demon, Gu Yu finally understood what the system meant by "strange location".

In front of you, there is a cave located on the stone wall!

The whole cave is more than five meters wide and six meters high, and the entrance and wall of the cave are made of wide strips of stone, which are unusually smooth and smooth, and are obviously excavated by hand.

"This is ......"

Gu Yu raised his eyebrows, and immediately squatted on the ground and picked up some dirt with his hands, and an old and rusty railroad track appeared!

At the same time, there was a dull buzz from inside the hole!

"It's this thing!" Gu Yu hurriedly got up and jumped to the side, and almost at the same time, a locomotive rushed out of the hole, and its huge body crashed towards him like a mountain.

"Is it parasitic on the head of the train!" While Gu Yu retreated, the psionic gun was already in his hand.

But I didn't want to, the locomotive didn't hit with a blow, and the huge body actually rolled over directly on its side, and countless pitch-black spikes poked out around it, like rolling logs from ancient wars.

"And this kind of operation? Electromagnetic net! ”

Gu Yu hurriedly mobilized his psychic power, controlled the positive and negative ions around him to form an electromagnetic bomb and launched it, hitting the train and exploding, envisioning it as an electromagnetic net to cover it.

Under the action of electromagnetic mesh stagnation, the tumbling body seemed to be stuck in a quagmire, and the speed slowed down a lot in an instant.

Taking advantage of this opportunity, the air cannon fired one after another, and under the effect of the electromagnetic network weakening the defense of the energy body, several holes were blown open in the shell of the train, and the fragments flew in all directions.

The dark demon seemed to be enraged, and the huge body kept tumbling, smashing the dirt and smoke billowing up, and the spikes shrouded Gu Yu like the tentacles of an octopus.

Gu Yu hurriedly took out the Evil Prison Knife to resist up and down, this B-level weapon is also very good, once it hits the spike, it will be slashed, and as the blade flies up and down, the close spikes are defeated one by one.

When he was almost exhausted, he stepped forward and used a thunderbolt strike to kill the dark demon.

Solving this threat, Gu Yu's eyes fell on the tunnel not far away.

Obviously, this is a tunnel for the train, so the Dark Demon often stays in it after it is parasitic on the head of the train, and in a sense, this tunnel has become a nest for the Level 2 Dark Demon.

"Do Dark Demons have nests too?" Gu Yu chuckled and shook his head: "Speaking of which, the dark demon should also belong to a kind of intelligent creature, but it is an energy body creature that is completely different from humans, and it is normal to find a nest." ”

"According to the rules of the game, there will be treasures in the monster's lair, right?" He suddenly thought of something else: "Then go in and have a look!" ”

At that moment, he stepped over and walked down the hole into the tunnel.

The tunnel was very long, and it was pitch black inside, Gu Yu turned on the flashlight function of the bracelet, and the screen immediately emitted a bright glow like a flashlight, illuminating the surroundings transparently.

After walking for about two hundred meters, the tunnel suddenly widened, and the rails on the ground branched out, dividing into several short branches, on which some abandoned train cars were parked.

In addition, there are some goods and machinery around it.

It seems that it used to be a small relay station for trains to park and unload, and the machinery around it had some simple repair equipment in addition to unloading and loading.

It's just an ordinary abandoned relay station, which is of no value under normal circumstances, but now, this place has been occupied by a dark demon for a long time, and all kinds of equipment and facilities in it have been infected by dark energy!

A smile appeared on the corner of Gu Yu's mouth, and with a thought, he opened the recharge system.

In her consciousness, the soft girl floated out all of a sudden, and let out a coquettish smile: "Young man, in that silent night, in that bright moonlight, have you ever thought of others and fantasized about others to appease your restless heart?" ”

Gu Yu rubbed his forehead helplessly: "Say human words!" ”

"Uh......" The soft girl restrained her smile and rolled her eyes in embarrassment: "What's the matter?" ”

Gu Yu breathed a sigh of relief and looked around: "Help me test whether these metals have value as materials!" ”

"Roger!" The soft girl responded, and then fell silent, it seemed that the system was detecting.

After a while, her soft voice sounded again: "A large number of C-grade metal materials that have been mutated by dark energy infection have been discovered, which contain a small amount of B-grade metal materials, and in addition, C-grade rune combinations have been discovered!" ”

"C-rank rune combination?" Gu Yu frowned slightly: "Forget it, don't worry about this for now!" Soft girl, recycle all the materials here! ”

"Boy!" Soft Girl giggled: "A large amount of materials have been contained in the backpack, and there is a serious lack of space to recover all of them. ”

"I'll rub!" Gu Yu was stunned for a moment: "What should I do then?" ”

"You can choose to expand the backpack capacity!" The soft girl's eyes flashed with a cunning brilliance: "Expand 100 cubic meters per 100 diamonds, do you need to expand now?" ”

"Daddy!" Gu Yu couldn't help but sigh: "Otherwise, what else can I do?" Then expand! ”

"Understood!" The soft girl responded, and then the backpack space shone up, and a large cloud of dazzling light erupted, as if the stars exploded.

"The virtual space has been successfully developed, and you currently have a backpack volume of 200 cubic meters! All metal materials in the vicinity have been successfully recycled! ”

After solving this matter, Gu Yu walked towards the rune combination that Soft Sister said.

When I came closer, I saw that a large pile of ores was placed here, which should have been the goods of the previous train, but now, these ores were also infected by dark energy, exuding a dark luster.

What is particularly striking is that on the largest pieces of ore, several lines of peculiar characters are engraved.

"Runes?" Gu Yu only knew a few of them, and he couldn't help frowning.

He clearly remembered that those characters had been seen in the Apocalypse's rune textbook.

Runes are a special symbol that appears after the invasion of the Dark Demons, and different runes are combined with different special stones to have different special effects, some can absorb energy, some can make metal tougher, some can stimulate the forces of nature, and so on.

For example, when I experienced V1 before, the D-level steel magic rune given by the system sealed a steel demon.

What's even more amazing is that if the runes are combined in some special sequences, they will burst out with terrifying power.

Through a long period of research, humans have learned the purpose and combination of some runes, and speculated that this may be the language of the dark demons, but there is no conclusive evidence to confirm this for the time being.

And now, a few strings of runes appeared in front of Gu Yu!

He took a closer look, and except for those few textbooks, the rest of the runes were unfamiliar, and it was impossible to decipher the information in them.

In desperation, I can only turn to the soft girl for help.