"It's so ugly." Tilly curled her lips.

Roland smiled awkwardly and politely. If the words of the Four Kingdoms are twisted like earthworms, then the devil's is more complicated, so that it looks a bit like a witchcraft symbol. In addition, he copied it entirely through memory, and was not very skillful in every stroke, which made the overall feeling even more messy. God knows whether Heckzod can understand what these words mean.

He also questioned Vakiris, but was rejected with a firm rebuttal.

She believes that it is more feasible to imitate humans, which not only proves that she has not yet been lost in the consciousness world, but also shows her own difficulties. She can only convey the news in this way. If her handwriting is copied directly, it will be easy for the cautious Heckzod to suspect that he is a fraud. After all, he can send a handwritten letter. Why not leave the consciousness world directly?

"So what is the content in the letter?"

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

"Brother, are you okay?" Tilly said in shock, "How could the enemy's lord listen to you?"

"It doesn't take much effort to try anyway..." Roland pretended to be indifferent, "What if it's done?"

In fact, he also asked Nightmare for this question. The other party's reply was that the lifespan of high-level devils often lasted for hundreds of years, and their habits and cultures would undergo considerable changes during this period, so the text would leave a distinct personal mark, which was more reliable than any herald or insignia.

According to Roland's understanding, it is probably similar to when you see a Martian article, you will think of the post-90s generation.

"Okay," Tilly put away the letter helplessly, "Since it's you who please."

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

Roland mentioned the microphone and the caller was Anna.

After hearing what the other party said, he raised his lips slightly and signaled to Tilly, "Don't hurry up today, just take a night off in the castle. I happen to have something new to you."

...

In the laboratory, Tilly saw two small square wooden boxes of new products that Roland mentioned.

It is no exaggeration to say that they are boxes. Not only can you see obvious cover gaps and loose-leafs on the side, but the overall size is also about 30 cm, which seems to be able to be held directly in your hand. This size is very different from the amazing mechanical creatures before, and it also lacks a little momentum.

The only difference between the two and other ordinary boxes is probably that they are covered with a shiny metal plate on the front, with some knobs and buttons arranged on it.

"This is……"

"Mobile radio station," Anna said proactively, "it is equivalent to a reduced telegraph tower. The advantage is that it can directly transmit sound, of course it is much closer."

"So that's it... wait," Tilly was stunned for a moment, she looked at Roland, "Is this the new communication tool you mentioned before?"

Although the other party had already drawn big cakes to her for a long time, she did not expect that the final product could be so exquisite! Even if it could be installed on the plane, it should occupy most of the space on the belly. After all, the size of the tower project is there, and it is incredible that it can be reduced to the level of the Tianhuo.

Roland seemed to see her doubts and reached out to open the top cover of the wooden box.

Clusters of interlaced lines and components immediately appeared in front of her. Although she did not understand the principle, Tilly realized that this thing was essentially different from the mechanical devices of the past.

"It can be regarded as the world's first real electronic device. Although electric motors, lights, telephones and transmitters used current, they were essentially simply converting electricity into other forms to release them." Roland said, "and it has an independent circuit system that can control current with current, which is equivalent to replacing gears, screws and bearings with electronic signals themselves. The volume is now quite large."

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

"Cough...of course not," Roland coughed twice quickly, "It's because the design bureau's drawings are not exquisite enough."

"Thanks to Sister Anna's busy until late at night every day, the test samples were successful so quickly," Lucia, who was an assistant, added. "The main reason is that the electron tube must be kept in the vacuum and many devices must be stuffed into it. Without black fire, it is difficult to ensure the success rate."

The core of the radio station is the electronic tube that integrates amplification, detection and oscillation. It is also a sign of human beings entering the electronic age. Roland naturally knows how high the threshold is, the pile of shiny scraps outside the laboratory on the north slope is proof. What's more, it's hard for him to provide guidance in electrical science like before, and most of the content can only be explored slowly by Anna himself.

Facts have also proved that the short-wave radio he had previously conceived was just a beautiful fantasy. After that, Anna's work focus would inevitably be on a large bomber. It would be great if the electronic tubes he made could satisfy the use of the Sky Knight.

"Can I give it a try?" Tilly asked impatiently.

"Of course." Anna nodded with a smile.

After a while, the three of them talked between the inside and outside of the laboratory, and the room was filled with a cheerful atmosphere.

Thanks to the extremely clean electromagnetic background of this era, the ground contact range of the radio principle prototype can easily reach more than two kilometers, and it will undoubtedly be further away in the air. Although the radio will be significantly disturbed when the spark transmitter communicates, except for extremely urgent messages, the transmitter can choose to send telegrams at a fixed time to stagger the operation time of the Air Knight. There is not much conflict between the two.

In Roland's eyes, the successful development of the radio station is even more important for the Air Knight than the newly developed 20mm cannon. Real-time communication will greatly broaden the range of activities of the flight formation, giving various air combat tactics room to be exerted. With close and precise cooperation, the team's combat strength will definitely be improved in an overall manner. It can be said that the Air Knight who can do this can be regarded as a real air force.

Tilly obviously saw this, and after ending her experience with unfulfilled satisfaction, the urging she spoke changed from a dedicated machine to more radio stations.

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

When the orange-red figure disappeared into the white sky, the dawn morning light suddenly pierced the clouds and scattered millions of soft light belts.

The Demon Month, which lasted for nearly four months, ended.

At the same time, the red moon hanging high above her head instantly disappeared, as if it had never existed.

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

Hundreds of years ago, the devil would set up obelisks while the red moon shines on the earth and wait quietly for it to grow into towering pillars. Only after gaining a foothold can they launch a formal attack.

The battle of destiny often shows its true appearance at this moment.

Now, humans are standing on the same level again.

But this time, their appearance is completely different from the past.
Chapter completed!