Xu Yichen was unprepared for what he would encounter or discover, and in the eyes of the demon hunters, this was a somewhat risky operation.

In reality, he would never have entered an underground space that was clearly artificially excavated without knowing anything about the situation below and without adequate preparation.

But here, Xu Yichen is a demon hunter, and there is no one else who can complete this kind of task in his place.

The most important thing is that he is in a hurry.

Advancing along the narrow underground tunnel, Xu Yichen was far beyond ordinary people's perception, and vaguely felt that this tunnel used an insignificant angle to lead the two intruders to a deeper place underground.

What exactly is it that excavates this tunnel? After walking more than three hundred meters below, Xu Yichen was sure that with the power of mortals, it was impossible for them to spend manpower to build such a passage that was useless to ordinary people.

As the tunnel stretched downward, the height of the tunnel gradually increased, and the Demon Hunter was relieved that he could walk with his chest held high.

Before this, Xu Yichen had been thinking about how much combat effectiveness he could exert if he encountered an enemy in the narrow space before.

Demon hunters speculate that this may be some group of professionals who once lurked in the town, or where the organization dug up to hide something.

Because there are no traps in the entire tunnel, the occasional holes in the walls are vents used to keep the air flowing in the tunnel.

With his saliva-stained fingers, he could feel the flow of air, and Xu Yichen estimated that he was about fifteen meters underground at this time.

The straight tunnel had no turns, and it should have been at the edge of the camp at this point.

A somewhat decaying wooden door appeared in front of the two men.

What exactly is waiting for you inside?

Could it be that this thing caused the disappearance of the people who lived here?

What happened to the people who dug the tunnel in the first place?

At this time, on the ground, the young men standing guard on the improvised city wall gave an early warning, they lit the brazier beside them, and at the same time shouted loudly: "Something is approaching outside the city!" ”

Ted glanced at the heavily armored samurai who was guarding the entrance of the tunnel and said to the one-armed man, "You stay here, I'll go see what's going on!" ”

Giving Kasha a look, the two remaining pros in the camp hurried in the direction of the wall.

In that direction, the strange roar made the one-armed man feel a little bad, but when he saw Nangong Yujun's tall figure, he relaxed a little.

"If we have a problem that we can't solve, you're not going to sit idly by, are you?" The one-armed man asked tentatively, unsure of what kind of person he was.

In the days when he took on tasks all over the world, he had seen many professionals, some of whom could be called chivalrous and courageous, and some of whom could not be saved when they saw death, and their indifference to mortals was the more serious the higher-level professionals.

However, players in the Loess District have already taken over the burden of fighting against Chaos or other evils in the hands of the aborigines, and combat-type players have developed the habit of protecting mortals.

"There won't be any tragedy here until I fall." The voice of the black-armored warrior was a little dull when it came out of the helmet, but what he said made the one-armed man put his heart down: "The situation outside is not as bad as you think, if there is a real problem, I will support it in time." ”

As a player with a career level of up to level 8 and mastering extraordinary powers, this small town with a small area of not very large size, Nangong Yujun is confident that he can reach any corner within five seconds.

It may cause a lot of damage to public facilities, but the black armor samurai don't care about such minutiae.

Sending the situation outside to the demon hunters underground, Nangong Yujun focused his attention on the surrounding environment, in the dark night, you never know if the enemy that has been exposed is a decoy or not.

Where there is no sound, perhaps more dangerous.

The demon hunter who received the news was slowly pushing open the wooden door, and behind the door, a relatively spacious small room of about twenty square meters appeared in front of the two people.

"I don't feel the Void at all." Ephelal said to the Demon Hunter, "Unlike drinking your blood, this place seems unusually 'clean'!" ”

"Clean?" The Demon Hunter looked around—

A small round table with a few books that were no longer visible, a small oil lamp covered in dust, and an equally dirty chair.

A bookshelf had been randomly built out of wooden planks on the wall, but now it was broken, and the books that had fallen on the ground were already in tatters.

The main attraction is the several boxes piled up in the corners, one of which is in an open state and filled with blocks of bars of metal.

Xu Yichen picked up one of the pieces of metal, which was much lighter than he had imagined, and under the dust, it was similar to the color of silver metal, but it was far more lustrous than silver.

This is definitely not silver, and when exposed to the air for so long, silver will become tarnished and easily oxidize with some components in the air.

But the piece of metal in the hands of the demon hunter, after brushing off the dust, in the firelight, like a sword that had been dusted for many years, emitted a silver light.

Mithril!

This was the first word that came to Xu Yichen's mind, although he had never seen the metal of Mithril, but after hearing that the Pirate King Mama might have mastered a vein of Mithril, he discussed the nature of this metal with the dwarves Groin and Carpenter.

For example, good conductivity to magic, low density, high strength, etc.

Of course, at the level of a dwarf, Mithril is a metal that has only been seen from afar, and has never been fiddled with in person, and it is basically hearsay.

But with these descriptions alone, Angus Carpenter's eyes lit up.

"It's probably a metal that can't exist in reality, and it's a combination of the advantages of a myriad of materials, and I can't imagine what it would be like to exist in this metal." The black buddy immersed himself in his own world with a blurry look: "If I can study this metal thoroughly, maybe I can try to make it in reality!" ”

Of course, if Nangong Yujun heard this, he would definitely say, "You're late, brother, we've already done this work." ”

In Nangong Yujun's experimental armor, a large number of this metal was used as a conductive material.

It is said that in reality, there are already laboratories experimentally synthesizing this metal.

The scientists of New China studied the order of this metal from the atomic level, and made a one-to-one replica of it out of nothing.

This is all thanks to the first batch of science officers to enter the game, many of whom have become high-level spellcasters, and as pure researchers, these people are quite obsessed with spell research.

They optimized the existing spell model and created a spell that could be used to observe microscopic matter in a native way, allowing scientists to observe matter more directly.

After two months of discussion, the Anti-Intelligence Committee finally concluded that this kind of research and development work would not have a positive impact on the existence of the Void, and at the same time, the Green Skins in the north did not produce corresponding changes.

Eventually, the spell was promoted.

And now, in front of the Demon Hunter, there is a whole chest, suspected to be Mithril metal.

Who was the former owner of this place? The doubts in Xu Yichen's heart became even greater.

In front of the Demon Hunter, in addition to the chest filled with mysterious metal, there are three chests that have not been opened.

Two of the chests had no extra protection on them, and were locked with a simple lock, apparently the former owner of the place was confident in his secret hut and sure that no one would find it.

So he didn't carry out any superfluous anti-theft measures.

The Demon Hunter directly pulled off one of the locks and opened the second chest.

The box was filled with parchment, full of intricate formulas and patterns, and the notes were a little scribbled, but the handwriting was the same person's handwriting.

Xu Yichen picked up a few of them, these parchments were thicker than he expected, not only very soft, but also extremely tough.

Even after being thrown into this unknown underground space for an unknown number of years, the handwriting on it still remains clear.

"This is paper made from the skin of a bipedal wyvern." Ephilar picked up one of them, his voice a little hurried: "High-level spellcasters sometimes use this material as the material for magic scrolls. ”

"These aren't magic scrolls." The Demon Hunter had never used a magic scroll, but he had seen it from his teacher, and it was the same type of thing as the Soul Breaker he had used before.

What he had in his hands now was just notes, without a trace of magical power.

The value of the magic scroll, depending on the level of magic recorded on it, can range from 100 gold to 5,000 gold in the market.

Higher levels of magic, which ordinary scrolls cannot withstand, are usually stored in more precious things, such as scrolls made of dragon skin, or perfectly structured gems.

And this kind of paper made of the skin of a bipedal wyvern, which is worth a lot of money, is obviously regarded as ordinary paper to record essays.

"I think these things once belonged to a powerful spellcaster." The silver-haired witch rummaged through the dragonskin paper in the box and said to the demon hunters, "They are the only ones who have so much precious metal to store. ”

"It's not like a spellcaster's territory." Xu Yichen casually opened the third box: "I thought they all lived in the tower." ”

The third box contained several sealed glass containers, in which tissues of unknown organisms were soaked.

In one of the jars, there is an eye the size of a fist, along with the part of the stalk at the back.

After being irradiated by the light, it shook a few times like a living thing, and the whole eye was like a goldfish, changing direction in the container, avoiding the light from shining directly on the pupil.

"It's more like someone infiltrated that mage's lab and stole it all." The Demon Hunter gave a more plausible explanation.

Remember Carpenter saying that there was a dark wizard tower nearby, and maybe someone had remembered the fortune of that spellcaster decades ago?

Then, in a small and inconspicuous nearby village, a very secret treasure room was dug inconspicuously.

Then he waited for a suitable opportunity and sneaked into the mage tower and stole enough wealth, such as the things in front of him.

Xu Yichen knew that Yang Yuefan had done this kind of thing, but he believed that it was because the mage tower didn't have too many alarm measures at all, and it was completely to deal with the war.

This also explains why the people of this small village have since disappeared.

From the fact that these 'stolen goods' have been forgotten here, it can be estimated that eighty percent of the original thieves were found at the door, and perhaps the villagers here have been turned into burial objects in the anger of the mage.

However, there are too many doubts in this inference, the truth has long been covered up in time, and Xu Yichen plans to wait for the future to have a spellcaster in the battle group, and then let him study these documents.

In front of him, there was the last box, and the smallest one.

But this box is made entirely of metal, and it is full of patterns that do not know the meaning, and there are no interlocking heads.

Fortunately, the previous owner seemed to have thought about opening this box, which saved Xu Yichen a lot of trouble.

A pried edge was in the corner of the box, and judging by the surrounding traces, the previous owner used a lot of means to open the box, but at the moment before success, he gave up.

Maybe the 'lost owner' just came to the door?

Thinking so, Xu Yichen inserted his long sword into the gap, and then pried the box open with force.

A few hundred kilometers away from this small village, by the sea, in a huge tower built on the edge of a cliff, suddenly there was a commotion.

A complex machine the size of a truck, originally in a state of silence, as if suddenly activated by something, countless gear levers began to move inside.

With a neat jet, the machine let out a roar, and a tall figure in a black robe, an obsidian mask, and a staff suddenly appeared in the room.

The black-robed mage's face hidden under the mask was invisible, but judging by the frequency of his back and forth steps, it seemed to be very anxious.

As the movement of the machine became faster and faster, a carved picture gradually appeared in front of the mage.

The three-dimensional photographs carve out the trees, then the swamps, and the ugly ghosts on them.

Then there was the simple city wall, and the young militia with nervous expressions on it, and then the tall figure of Nangong Yujun also appeared in the sculpture, but only half of it had time to carve, and the machine seemed to suddenly lose power and stopped.

Meanwhile, in the basement, the Demon Hunter slammed the box shut.