It's ugly. Tilly pouted.

Roland smiled awkwardly and politely, and if the words of the Four Kingdoms were distorted like earthworms, then the devil's were more complicated, so much so that they looked a little like witchcraft symbols. Coupled with the fact that he had copied it entirely from memory, and he was not very skilled at every stroke, it made the overall perception even more messy, and God knows if Hekzod could read what these words meant.

He also questioned Vakiris, but was categorically refuted.

She believes that it is more feasible for humans to imitate it, both to prove that she has not yet been lost in the realm of consciousness, and to show her own predicament, which is the only way to convey the message. If you directly copy her handwriting, it is easy to be suspected by the cautious Hekzod of fraud, after all, she can send a handwritten letter, why not just leave the realm of consciousness?

"And what's on the letter?"

"Let the Lord of the Sky Vault try to avoid the next frontal battlefield, so this letter needs to be sent to the devil by the General Staff. ”

"Brother, are you alright?" Tilly said with a shocked expression, "How could the enemy Maharaja listen to you?"

"It won't take much effort to try anyway......" Roland pretended to be indifferent, "what if it happens?"

In fact, he also asked Nightmare about this question, and the answer was that the lifespan of high-ranking devils was often hundreds of years, during which time their habits and culture would change considerably, so that the writing would leave a distinct personal imprint, which was more reliable than any coat of arms or insignia.

According to Roland's understanding, it is probably similar to seeing the Martian text and thinking of the post-90s.

"Alright," Tilly reluctantly put away the letterhead, "since it's your request." ”

Just as she was about to say goodbye, the phone in the North Slope Lab on her desk suddenly rang.

Roland lifted the microphone, and the caller was none other than Anna.

After listening to what the other party said, he raised the corners of his mouth slightly, and motioned to Tilly, "Don't rush today, rest in the castle for the night." I happen to have something new for you. ”

......

In the lab, Tilly sees what Roland calls a "revolutionary" new product, two small square wooden boxes.

It is not an exaggeration to say that they are boxes, not only can you see obvious cover gaps and loose pages on the side, but the overall size is also about 30 centimeters, which seems to be directly carried in the hand, this size is very different from those amazing mechanical creations before, and even with a little less momentum.

The only difference between them and other normal chests is that they are covered in a shiny metal plate with knobs and buttons on the front.

"It's ......"

"Mobile radio station. "It's the equivalent of a reduced telegraph tower, and the advantage is that it can transmit sound directly, at a much closer distance, of course." ”

"I see...... Wait," Tilly was stunned for a moment, and she looked at Roland, "This is the new communication tool you talked about earlier?"

Although the other party had drawn a large pie to her a long time ago, she did not expect the final product to be so delicate! Even if it could be loaded on a plane, it should take up most of the belly space. After all, the volume of the tower project is there, and it is already incredible that it can be reduced to the level of the Tianhuo.

As if sensing her doubts, Roland reached out and opened the lid of the wooden box.

Clusters of interlaced wiring and components appeared before her, and while she didn't understand how they worked, Tilly realized that they were fundamentally different from the mechanics of the past.

"It can be regarded as the world's first real electronic device, and the electric motor, light, telephone and transmitter of the previous era also used electric current, but in essence it was simply converted into other forms of electrical energy and released. "And it has an independent circuit system, which can control the current with current, which is equivalent to replacing the gears, screws and bearings with the electronic signals themselves, which is now quite large." ”

"Are you blaming me for not being good enough?" Anna glanced at him.

"Ahem...... Of course not," Roland coughed twice, "It's that the design bureau's drawings are not sophisticated enough. ”

"Thanks to Sister Anna's busy work late into the night every day, the test samples can be successful so quickly," Lucia added as an assistant, "The main thing is that the vacuum must be maintained in the tube, and many devices must be stuffed, and it is difficult to guarantee the success rate without black fire." ”

The core of the radio station is the electron tube that integrates amplification, detection, and oscillation, and it is also a sign that mankind has entered the electronic age, as Roland naturally knows how high the threshold is, as evidenced by the pile of shiny scrap outside the North Slope laboratory. What's more, it was difficult for him to give instructions on electricity as before, and most of the content had to be explored slowly by Anna herself.

It also turned out that the devolution of the shortwave radio station he had conceived before was just a beautiful fantasy, and Anna's focus would inevitably be on the large bomber, and it would be nice to take the time to make an electron tube that could satisfy the air knights.

"Can I try it?" Tilly asked impatiently.

"Absolutely. Anna smiled and nodded.

After a while, the three of them were talking to each other inside and outside the laboratory, and the room was filled with a cheerful atmosphere for a while.

Thanks to the extremely clean electromagnetic background of this era, the ground contact range of the radio prototype can easily reach more than two kilometers, and it will undoubtedly be farther in the air. Although the radio station will be visibly interfered with when the spark transmitter communicates, except for the extremely urgent message, the dispatcher can choose to send the telegram at a fixed time to stagger the air knight's action, and there is not much conflict between the two.

In Roland's eyes, the successful development of the radio station is even more important to the air knights than the newly developed 20-millimeter cannon, and real-time communication will greatly expand the range of activities of the flight formation, so that all kinds of air combat tactics have room to play. With close and precise cooperation, the team's combat strength will be improved as a whole. It can be said that the air knights who can do this can be regarded as a real air force.

Tilly apparently saw this too, and after ending the experience with a lingering attitude, the urging on her lips changed from a dedicated machine to more radios.

Early the next morning, she boarded the Phoenix with two prototypes.

As the orange-red figure disappeared into the white sky, the dawn light suddenly pierced the clouds, casting thousands of soft bands of light.

The Demon Moon, which lasted for nearly four months, has finally come to an end.

At the same time, the red moon hanging overhead also disappeared in an instant, as if it had never existed.

However, Roland knew that this did not mean the end of the battle of divine will.

Hundreds of years ago, the devil would erect an obelisk when the red moon shone on the earth, and waited for it to grow into a towering pillar. Only after gaining a foothold will they launch a full-fledged attack.

It is often at this moment that the battle of fate reveals its true face.

Now, humanity is standing at the same level again.

But this time, their faces are very different from the past.

He believes that history will not repeat itself.

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