Engels cautiously looked around at this time, constantly observing the surrounding situation, and did not let go of any trace of wind and grass.

"Sister, what's the situation ahead?" Lei Li looked puzzled, looked at Ingels, and asked.

Engels stopped Lei Li and Amy from making rash moves, and the situation ahead was complicated, so it was not suitable to attack rashly.

"Don't worry, you two, let me investigate first." Engels said calmly to the two.

Lei Li looked at the fallen alien monster and breathed a sigh of relief.

"Huh? What is it? ”

As the alien monster fell, Lei Li let out a sound of surprise.

Lei Li and Amy fought hard for a while, and they couldn't hold on to the electromagnetic flower, and they didn't know what to do.

Lei Li listened to the words of the red wolf, and when he heard the red wolf say that there might be a disaster of death, Lei Li couldn't help but have a cold back, and asked the red wolf, "Master, is the matter so serious?" ”

The red wolf nodded at Lei Li, and then said, "Of course, do you know how precious the technology before the 'Great Destruction' was?" If the news leaks, I promise, there will be countless forces swarming towards you! ”

After listening to the red wolf's words, Lei Li couldn't help but break out in a cold sweat, and immediately nodded to the red wolf, and then said, "Master, I remember, I will keep this secret!" ”

After Lei Li finished speaking, the red wolf looked at Amy.

Amy saw the red wolf looking at her, and immediately said to the red wolf, "Uncle Wolf, don't worry, Brother Lei and I will be tight-lipped!" ”

Red Wolf heard both of them say this, and nodded in satisfaction to the two of them. Then the red wolf turned his head to look at Oguri again, and said to Oguri, "Little ghost, I don't need to tell you about the danger here!" If you lose the 'smart chip', it means that you will lose your life and become a pile of broken metal! Do you understand? ”

Oguri nodded solemnly to the red wolf, and then said, "I understand, uncle, don't worry!" ”

Hearing Oguri's assurance, the red wolf smiled and said, "Okay, then we'll leave here with you!" ”

As the red wolf's words fell, Xiao Li's face was instantly full of excitement, he didn't know how many days he had been here, and now he was going out, how could he not be happy?

The red wolf turned his head and looked at Lei Li, Amy, and Oguri, and said to the three, "Now that the chariot is in hand, it's time for us to leave!" ”

The three of them immediately nodded solemnly at the red wolf, and then said, "Okay, let's leave immediately!" ”

"Well, let's go!" After the red wolf finished speaking, he took the lead and walked out of the factory.

Lei Li and the three of them saw the red wolf walking out, and immediately followed the red wolf's footsteps.

In this way, the four of them returned according to the route they had come. Not long after walking, the four of them came to the place of the two mysterious big iron gates before!

The four of them looked beyond the big iron gate, and it began to get dark. Looking at the inside of the big iron gate, which was as bright as day, I couldn't help muttering again.

Lei Li turned his head, looked at the red wolf, and said to the red wolf, "Master, I am still wondering, there is no light source in this factory, but why can it be as bright as day?" ”

When the red wolf heard Lei Li's question, he also shook his head helplessly, and then said to Lei Li, "Little guy, I think I've seen a lot, but I've never seen this kind of thing!" I'm ashamed. ”

Seeing that the red wolf didn't know what was going on, Lei Li immediately let out a long sigh, and then shook his head.

However, just when Lei Li was depressed, he suddenly thought of Xiao Li, and then Lei Li looked at Xiao Li and asked Xiao Li, "Brother Xiao Li, you are the guardian of this factory, do you know what is going on?" ”

Hearing Lei Li ask himself, Xiao Li nodded to Lei Li, and then said, "Well, I really know that!" Hey. ”

When Lei Li heard Oguri's words, he instantly focused his eyes on Oguri, constantly looking at Oguri!

Red Wolf and Amy also looked straight at Oguri, and at this time, their eyes were full of disbelief.

Lei Li stared at Oguri for a long time, and then said to Oguri, "Brother Chestnut, tell us what's going on!" ”

Xiao Li smiled at the three of them, and then said to the three of them, "Hehe, it's actually not difficult, but this technique has been lost now, so you don't know how it works." ”

The red wolf looked at Oguri in surprise, and then asked Oguri, "Little ghost, what technique are you talking about?" ”

Oguri turned his head to look at the red wolf, and then said to the red wolf, "Look, the walls of this factory! ”

After listening to Oguri's words, several people all looked at the four walls of the factory, only to see that the wall was unusually smooth, and several people knocked on the wall, only to feel that the wall was unusually stiff!

Lei Li looked at the wall, and then said to Xiao Li, "Brother Xiao Li, this wall is unusually smooth, and also, this wall is extremely hard!" ”

After listening to Lei Li's words, Oguri looked at a few people with a smile on his face, and said to a few people, "The walls around this factory are made of 'heavy steel', which is why this is the case. ”

After listening to Oguri's words, the three of them all looked at Oguri blankly, not knowing what Oguri was talking about.

Xiao Li turned his head, saw the three of them look dazed, and continued, "The so-called 'heavy steel' is also a kind of steel, but it is much stronger than the hardness of ordinary steel, this kind of 'heavy steel' is produced in our period, and its principle is to add some special substances to it at the time of smelting to increase the hardness of steel!" ”

When the four of them heard Oguri's explanation, they also understood the meaning of "heavy steel" and immediately nodded to Oguri.

After a while, Lei Li asked Oguri again, "Brother Oguri, does what you said have anything to do with the question we asked?" ”

Hearing Lei Li's question, Xiao Li immediately smiled and said, "It's related, it's a big deal!" ”

Amy, who was in the back, asked with a puzzled face, "What you said has to do with the light in the factory?" ”

Oguri turned her head to look at Amy, then nodded at the three of them, and said loudly, "It's related!" Of course it does. ”

When the three of them heard Oguri's words, they immediately looked at Oguri in surprise, as if they were really waiting for Oguri's next move.

Xiao Li glanced over the three of them, and then said to the three of them, "Hehe, is the light source in the factory, it's these heavy steels!" ”

"Huh?" The three of them looked at Oguri, still full of puzzlement.

"The mystery of the glow of this 'heavy steel' lies in the added substance! When this 'heavy steel' is smelted, the added substances will be doped with some high-concentration phosphors, as we all know, phosphors will emit light, especially high-concentration phosphors! However, these phosphors were specially treated before they were added, so that the factory could still be as bright as day for so long! ”

The four of them listened to Oguri's story, and couldn't help but marvel again and again! This technology of smelting 'heavy steel' is probably already lost in the current world!

Lei Li looked at Oguri and said, "Brother Oguri, it seems that you are still an encyclopedia!" Hey. ”

Xiao Li touched the back of his head, smiled at Lei Lihan, and then said, "Brother Lei, hehe, I will follow you in the future!" How about making your encyclopedia? ”

Lei Li smiled at Oguri and said, "Okay, hehe!" ”