Soon, Gowen arrived at the forefront of exploration of the ruins of the Dark Mountains under the leadership of Byron.

It is already located near the middle level of the ruins. It is the result of the hard work of the exploration team led by Byron for several consecutive days. It is connected to the upper area through a large staircase. It has a wider space and a tall roof to build such an extra wide space in the mountain. Since its builders have chosen this scale, it can only mean that this area requires such a large space.

All corridors are elevated, so are all doors and rooms.

Gao Wen picked up a map and used the light of the magic crystal held by Hetty next to him to view the route on the map. Knight Byron was very dedicated to drawing the area along the way. There were many straight corridors and rooms clearly visible on it. Some of the rooms or corridor forks were also marked with special marks to indicate that there were unknown objects or suspicious forks. Obviously, even after exploring for several days, Knight Byron and his party could not figure out what the scale of this amazing ruin was.

How crazy is this thing?

Now Gao Wen, Hetty, Amber, Byron and a large group of soldiers have come to that special room. Byron points to the cleared door and control mechanism in front of him: "Sir, our discovery is purely a lucky thing. This door was originally sealed, but it was probably because of the gap in disrepair that the airflow was discovered by us. The control device next to it should have been broken, and its recognition function has failed, and anyone can activate it."

"Can the creation of the Gondor Empire last for thousands of years..." Gao Wen sighed softly, "Say it out."

Byron nodded, took off his glove and stepped forward, and placed his hand on the metal device. A distorted sound came from the device: "Detection...sample tester...stable period...permitted to pass. The isolation door is being opened..."

Amid the squeaking mechanical operation, the ancient isolation door embedded in the wall slowly opened.

"As long as this happens, the door will open, and no matter whether there are people entering or leaving, the door will close itself within 5 minutes, or tap the pillar twice in a row, and the door will also close. In addition, there is the same device on the other side of the passage." Byron explained in detail.

Then two more soldiers stepped forward, and a similar sound was still heard in the device, and it was prompted that the isolation door had been opened.

It seems to identify anyone who touches the device as the so-called stable sample tester, and identity verification is useless.

But Gao Wen couldn't help but frown: he had deep thoughts about the words "sample tester" mentioned in the device.

"This thing can even speak!" Amber became interested in the device itself. She ran over and put her hands on the top of the metal pillar in a similar manner, and said enthusiastically, "I heard that elves and wizards also create a kind of witch who can talk, but I have never..."

"Detection...warning, ineligibility, non-identifiable target, channel closed, alarm activation."

Accompanied by this stiff and cold sound, the isolation door quickly closed again in a loud noise, leaving only a confusing amber standing next to the device: "Hey... I did nothing?!"

Gao Wen put his hand on the hilt of the Trailblazer Sword when the so-called alarm activation sounded, but after waiting for half a minute, he didn't hear anything else. Then he felt relieved: it seemed that most of the functions in this facility had been stopped, and the door in front of him might be operating independently, and it would not really emit any alarm.

Byron, Hedy and others were also startled by the sudden change. They pulled out their weapons and set off their posture as if they were facing a great enemy. Until they confirmed that no ancient mechanism trap was activated, Hedy breathed out and looked at the metal device in shock: "What's going on? Why can't amber be able to touch it?"

"Don't worry about this for now," Gao Wen stepped forward and pulled Amber aside, put his hands on the metal pillar, "Let's see if this thing can still be used."

As a result, the next second, the old access control device heard the sound of identity verification again, and the isolation door creaked and opened again.

"...Is this door more shameful!" Amber jumped up and down, "Why is it okay for anyone to touch it, I just touch it and close it?!"

"I probably guessed what happened..." Gao Wen frowned. From the several reactions of the access control, he boldly inferred some facts, "I'm afraid this verification device is not broken."

Amber looked disbelief: "Not broken? Why can anyone open it if it is not broken?"

"The security setting of this door may not be as high as I thought at the beginning. Its function is to ensure that the 'normal people' pass the door," Gao Wen said with a frown. "Do you still remember what Nicholas Egg once said? This facility has conducted research on suspected human experiments, so the 'sample tester' mentioned in the access control is almost the living person, and the so-called 'stability period'...is mostly the meaning of no mutation and other out-of-control situations. In other words, as long as you are a normal ordinary person, you can pass through this door."

"Then why can't I?" Amber stared, "I'm pretty normal!"

Gao Wen looked at the guy up and down: "Are you a normal and ordinary human? Don't say it's normal and ordinary, are you a human?"

Amber's pointed ears shook: "...Okay, it makes sense."

The others also nodded thoughtfully. It seemed that Gao Wen's explanation was recognized by everyone, but Gao Wen himself fell into deep doubts after he finished speaking.

Is the situation really that simple? Is this door just to prevent the out-of-control test items from coming out? Will it have any other filtering mechanism?

For some reason, after hearing the stiff and cold sound of the access control system, he involuntarily felt an extremely weak but real sense of disgust and resistance in his heart. However, when he searched for memories, he could not find the source of this negative emotion at all.

But no matter what is behind the door, he must go in.

After confirming that Amber just couldn't use the verification device at the door, and that she followed someone else and did not touch any alarm, Gao Wen led the team into the space behind the door.

They passed through a corridor built of unknown metal materials. The metal columns arranged on both sides of the corridor made Gao Wen unable to help but think of sterilization or static electricity removal devices. At the end of the corridor was another open isolation door. Opposite the isolation door was a circular hall.

The hall is built with artificial materials. Although the white wall paint has been dusted and fallen off, it can still remind people of how bright and wide the entire space was in the past. A circle around the hall, you can see a large number of ancient magical devices arranged along the walls and connected by pipes or metal columns. Another part of the pipes extending from these devices gathered in the center of the hall: there were more than a dozen strange objects.

They have a metal base, and the base is a transparent tubular structure that looks like a biological culture tank. You can also see a heavy top cover at the top of the tubular structure. The top cover is engraved with runes and magic arrays, but all runes have been extinguished.

The scene in front of him that was indescribable whether it was magic or science fiction made Gao Wen a little dazed, but the scenes in Gowan Cecil's memory about the glorious period of the Gondor Empire quickly weakened his sense of incongruity.

Looking at the neatly arranged devices in front of him, Gao Wen could almost imagine the scene when these containers were filled with biomass solvents and soaked in test bodies. Around these containers were the imperial mages who were busy walking around. They recorded various parameters of the samples in the container, and occasionally used magic spells to stimulate the samples inside, and treated the "test bodies" of the same race as them in the container with a cold attitude that was almost inhuman.

Human experimentation was not a rare thing in the Gondor Empire back then, and it was even less rare in the Ansu Kingdom today.

"It's simply incredible..." Herty looked at the mysterious ancient magic devices with an almost fascinating expression. The neatly arranged runes and fine metal structures surprised her. "Such a complex rune combination form... such a tightly-sewn assembly... such a neat and uniform component... what did they do?!"

"These runes are piled up with the endless energy of the Deep Blue Well, regardless of the consumption of hard-hitting experimental data. These parts..." Gao Wen looked at the magical devices that already had a certain prototype of industrial products and sighed softly, "They require thousands of technical craftsmen, more than twenty basic workshops, a complete set of complex production processes and thousands of standard parameters, and a technical system supported by the entire empire."

Hetty was a little lost for a moment: "...have we actually left such advanced technology... We really couldn't save them back then?"

Gao Wen sighed: "At that time, Ansu's first generation of pioneers tried to restore these things in their lifetime, but the data we rescued was not enough to restore half of them. The industrial chain was broken, and a group of semi-literate people who ran out of the border studied the drawings for ten years and could not make up for one link. What's more, the conditions at that time did not allow anyone to do research at all. The first generation had to devote 90% of their energy to production work to ensure that the number of people who starved to death that year did not exceed the number of newborns..."

Speaking of this, he shook his head: "But more important than these, the more important reason is that we have lost the huge pure energy provided by the Deep Blue Well, which greatly reduces the operating requirements of many magic devices. If the same device is placed in other magical environments, it may not be able to operate at all. The most basic and simplest things are easy to say, but the more complex and advanced it is, the more thorough it will be scrapped after leaving the Deep Blue Well."

Amber suddenly felt a little touched when she listened to Gao Wen's words: "That's why do you value universality and applicability so much?"

"The industrialization of magic, supported by the deep blue well, is not really industrialization," Gao Wen said casually, saying something that everyone present may not understand, and then looked around with a smile, "Compared to this, let's see how many surprises this ancient test site has left us."

His eyes swept through the cultivation containers, consoles, magic bases and sensors that had been around for thousands of years, and finally landed on a nearby wall, his eyes couldn't help but condense.

There is a huge line of words written in the common language of ancient humans:
Chapter completed!