From the information obtained by Haoren, it has been learned that this Lu Renyi has a high talent for electromagnetic research, and he was originally an assistant to several other old professors, but by virtue of his own time to study electromagnetic theory, he was actually promoted to a high-level electromagnetic researcher earlier than those professors.

The plasma grenade was developed based on his suggestion, and of course, as the level of the surrounding monsters increases, the low-yield plasma grenade becomes more and more limited.

After Lei Jun disappeared, Lu Renyi didn't know anything about Haoren, and he hid quietly until the Spider Empress was eliminated and the news of the construction of Hope City spread throughout Jinling City.

"This kid is really smart, according to the improved type of plasma mine he proposed, it will be very effective as a defensive barrier, and a plasma mine will be placed on the perimeter of the insulated city wall, tsk, it feels too cruel to think about it." Qin Yang was so emotional.

"Plasma mines, isn't that thing very stable, if it doesn't blow up the enemy, it won't be fun to blow up your own people." Haoren questioned.

"So it's an improved type, there is really no way to stabilize this thing, even with Lu Renyi's talent, there is no way to solve it, unless you find a complete version of the drawing, but Lu Renyi took a workaround, reducing the amount and volume of plasma, and reducing the plasma mine to half of the original, the power is smaller, but it is more stable. I've had people test it a lot of times, and it's basically fine. ”

Qin Yang looked very appreciative of Lu Renyi and paused. Then he asked, "Is there anything you are looking for him?" Now the plasma mines near Hope City are being laid, but he is indispensable. ”

Haoren smiled: "Don't worry, I won't let him go to Hunan Province with me, not to mention that the teleportation boots can't teleport two people." ”

Lu Renyi was soon called to a separate room in the castle, he and Haoren met for the first time, surprised by Haoren's youth, Haoren was also even more surprised by Lu Renyi's youth, and sure enough, as Qin Yang said, he was a young man with extremely high talent!

Time is pressing, and Haoren doesn't talk nonsense. Straight to the point, he said, "Then I want to know." Do you know anything about electromagnetic shields? ”

"Electromagnetic shields? The main means of defense in the early stage of mechanical civilization was to use electromagnetic force as protection, and the attack and defense ability against the material system was extremely high, but the defense against the energy system was relatively low. Of course. Electromagnetism as a means of early rise of mechanical civilization. In fact, it is a relatively outdated thing. According to my understanding, mechanical civilization is divided into the early, middle and late stages, and the initial period is dominated by electromagnetic forces. The middle period is dominated by energy, and as for the later period, there is no clear information at present, and I am afraid that the prehistoric mechanical civilization was not able to reach the late stage and was destroyed by darkness, but I personally estimate that the later mechanical civilization should be based on space. ”

When it comes to electromagnetism, Lu Renyi's eyes lit up and he talked eloquently, Haoren just clicked on a random question, and he babbled a lot of words, Haoren and Qin Yang listened to it with relish, of course, Haoren did not forget his main topic.

"Ahem, it seems that you do know a lot, what I want to know is very simple, how can you sneak into the electromagnetic shield without alarming others?"

"Sneak in?" Lu Renyi frowned and pondered silently for a long time.

After a long time, he couldn't get an answer, Haoren was slightly disappointed, but he didn't blame it, even if electromagnetism was an early technology of mechanical civilization, it was impossible for a human being to fully master it now, and if he couldn't sneak in, he could only storm the city of Hunan Province, and was about to get up and comfort a few words.

Lu Renyi suddenly raised his head and said slowly: "It's not impossible to sneak in, as long as you use an electromagnetic jammer." ”

"Very well, is it simple to make an electromagnetic jammer?"

Lu Renyi pondered Haoren's intentions and explained simply: "It's not simple, this thing consumes too much energy, but if it's just a small electromagnetic jammer that interferes with local areas for a short time, then it's okay to create a one-time consumable." ”

"Consumables? How many resources are needed to manufacture? Qin Yang asked.

"Well, if we really want to make it, we have enough materials at the moment, but because of this, the laying of plasma mines will be delayed for at least a month or so."

"So long! And that's just consumables! Qin Yang's eyes widened, he was in charge of the general coordination aspect, and naturally knew how difficult it was to collect materials from Jinling City, which was currently in ruins.

Lu Renyi smiled slightly bitterly: "This can't be helped, according to what I know, in the mechanical civilization, all defensive items consume more resources than offensive ones." ”

The two of them set their eyes on Hao Ren and waited for his final decision.

"Build one for me, how long will it take?" Haoren said.

"Consumables only need to be used once, so the manufacturing accuracy requirements in all aspects are very low, and they can be completed quickly, well, if you rush to work, four or five hours!"

"Then it's trouble!"

Lu Renyi quickly went out to prepare, and Qin Yang asked with some doubts: "What happened in Hunan Province, will electromagnetic jammers be used?" Could it be that the people there are mainly based on the development of mechanical civilization, and they have clashed with you? ”

"Human?" Haoren shook his head with a slightly wry smile: "The problem is, I don't know if it's a human being who occupies that city now!" ”

After briefly explaining the strange metal city in Hunan Province, Qin Yang was also so shocked that he couldn't speak for a long time, and finally came to his senses, rubbed his head, and said: "It's really a strange world, I feel that we still know too little information, fortunately you went to Hunan Province in advance, otherwise we will definitely be completely stunned if we really encounter similar problems in the future!" ”

It's a bit certain, nine out of ten of all these things that are currently shown in Hunan Province are the products of mechanical civilization, and the question is, is all this the remnants of mechanical civilization, or is it the mechanical technology mastered by the darkness?

Haoren rested for four or five hours, and when he woke up, Lu Renyi had already handed over the electromagnetic jammer to him and taught him how to use it.

The electromagnetic jammer looks like a half-human-tall iron box, with a few red and green buttons on the box, which is extremely simple, but it is relieved to think that this is a consumable that came out of the hurry.

The teleportation function of the teleportation boots was activated, and it appeared outside the metal city in Hunan Province again, and the moment it came out of the teleportation plane, Haoren's ears suddenly sounded with the sound of guns and cannons, and the flames were soaring into the sky not far away, and the sound of explosions came and went.

Haoren's first thought was, Gu Yingyue, that guy couldn't help it, and rushed up to attack alone? But it was quickly overruled, and she couldn't make such a big fuss alone.

"Haoren! This way! This way! ”

In the grass dozens of meters away, Gu Yingyue was showing half of her head, and waved her hand to this side, Haoren was clear, and rushed over with an arrow, and was ambushed in the tall grass with the girl.

"What the hell is going on?"

"As you can see, there was a fight." Gu Yingyue blinked her eyes and added, "It's been almost half an hour, it's almost over." ”

"I'm asking who fights with whom!"

Gu Yingyue replied: "I don't know, anyway, an hour ago, I was lying there bored, and suddenly I saw a group of people rushing up from the right side, intending to climb over the metal wall, they seemed to have some kind of special instrument, which could make the electromagnetic shield temporarily invalid, but within a few minutes, those tank robots rushed over and surrounded this group of people, and then, as you can see, a fierce battle." ”

"You didn't even go up to join in the fun."

Gu Yingyue snorted: "I can't tell who is friend or foe, how can I help, maybe I will be fired by people on both sides together, then I won't be wronged!" ”

Haoren nodded: "It's a bit of a brain, come with me." ”

"Well, well?" Gu Yingyue didn't take a few steps, she immediately stopped, and said suspiciously: "What are you going to do?" ”

"Dive in! Whoever that group is, they have done us a favor by drawing the attention of the guarding tanks. ”

Gu Yingyue reminded: "What about the electromagnetic shield? The instruments of the group were destroyed first at the beginning of the battle, and the electromagnetic shield has now been restored. ”

"Electromagnetic jammers, I have them too!" Haoren smiled and took out the iron box from the space package.

"Electromagnetic jammers?" Gu Yingyue tilted her head sideways and observed for a moment, but she couldn't understand this kind of thing, shrugged her shoulders, and muttered, "I hope you don't cheat me!" ”

"Stop talking nonsense! The battle over there is almost over, and if we don't go in, we're going to be discovered. ”

Both of them quickened their pace, and came to the foot of the city wall on the other side, Haoren first raised his fire wings and flew into the air with the iron box, put the electromagnetic jammer on the edge of the city wall, and pressed the red button according to Lu Renyi's teaching, and the iron box made a slight ziz sound, and a light-colored ripple radiated from the inside of the iron box, rippling around extremely quickly in a ripple shape.

The electromagnetic shield above the city wall immediately flickered and dimmed, and the electromagnetic energy seemed to have been disturbed in some way, and it was dimmed, and there was another ripple, and the electromagnetic shield finally disappeared silently, but the place where it disappeared was very small, only about a square of about one meter long, and although the electromagnetic shield in the other areas was also partially interfered with, it was not completely gone.

Haoren and Gu Yingyue cautiously passed through the narrow corridor one after another, and a few minutes later, a puff of green smoke came out of the iron box, the effect of electromagnetic interference dropped rapidly, and the electromagnetic shields around it surged over again, and in the blink of an eye, the iron box turned into a burst of sparks in the electromagnetism.

"It's really an inferior product!" Gu Yingyue didn't forget to mock a few words.

"It's already in the city, so don't talk this nonsense!" Haoren said angrily. (To be continued......)