<, Jin and his team decided to visit at once.

As one would expect, it was not possible to visit the site on that day, so they decided to visit on the following day, August 6.

This time, Jin, Reiko, and Reinhardt will accompany us.

The stay is short, and Reinhardt has decided to change his hair color just in case.

Hair style and hair color make a person's impression more than you can imagine.

Just by cutting long hair into a close-cropped head, it is difficult to recognize a person at a glance.

In the case of Reinhardt, he changed his hair from blonde to dark brown, but it gives a very different impression.

Also, I added some stuffing around his torso to make his skinny figure look thicker.

"It looks a little like he's not my brother Rai," said Elsa.

Elsa says.

But his loving wife, Bertje, said, "You can see it no matter how he dresses,

"I can tell no matter how he dresses.

She was not afraid to say, "I can tell no matter what I look like.

* * * *

Since Tomax Bartman, the chief administrator of Avalon, had been notified in advance, the landing of the <> went smoothly without any delays.

"Welcome, Master Jin."

Tomax Bartman met Jin at the airfield.

"It's been a while. I have a friend with me today."

Jin introduced Reinhardt.

"My name is Hurt. Pleased to meet you.

"Mister Hurt, I presume. My name is Thomas Bartmann.

Yes, Jin told me a lot about you.

Jin then explains the rest of the story.

"La ............ Harte is also a skilled magi engineer. <.

"Oh, that's great!　I was giving a lecture on the Adriana method until the other day.

"I see."

At this point Tomax Bartmann realizes he is standing on an airfield.

"Excuse me. Come on, this way please."

Tomax Bartmann, Jin, Reiko, and Reinhardt got into a parked car.

Once everyone was in the car, the car started to drive slowly.

"In a few minutes, the underground rapid transit system will be completed," said Tomax.

Tomax said.

"When it is completed, travel within Avalon will be more than three times faster than it is now.

"I'm looking forward to it."

Reinhard is curious about visiting <> for the first time ......, or rather the first time in about 350 years.

He says that seeing it on the screen is very different from visiting it in person.

Perhaps out of concern for him, Tomax Bartmann explained the facilities to us.

The road you are on now is not for the public, but for the officials. It will take you almost nonstop to your destination.

We arrived at the . < at ...... is one of the most prestigious academies in the world.

"We will be using the conference room here."

We're going to talk about the flashing lights, so they've asked for a wide range of participants, not just the World Guard.

"Come in."

Jin and the others are ushered into the middle conference room, where they find that about 20 participants have already gathered.

The seats were round tables with no distinction between upper and lower seats.

There was a < embedded in the wall, which could be used at any time.

Among them, Jin saw a few familiar faces. Among them were Groma, Eira, and Cachea.

However, next to Katya, there was an unfamiliar man sitting next to her. He is a large young man with dark brown hair and brown eyes. He seemed vaguely familiar.

Jin was curious about the man and decided to ask him later.

When Jin and the others took their seats, Tomax Bartmann opened his mouth.

"Ladies and gentlemen, the Magecraft Meister, Jin Nido, has just arrived. He is here today to introduce a technology that we believe will revolutionize air traffic control.

There is a round of applause. Tomax Bartman, the host and facilitator of the event, then began to explain about the .

"My name is Jin Nido. I am here today to introduce a technology that I believe will be useful for air traffic control.

Jin then explained the method of conveying information by means of flashing lights.

There are two main points. First, use lamps of a highly visible color. The blinking pattern should be the same all over the world.

He adds that the best colors for visibility are those with long wavelengths, from red to yellow.

"And as a supplement, green lamps can also send out more detailed information.

As an example, <> is not allowed to land. << red light on + green light flashing>> is cleared for landing. ...... and so on.

"Of course, this is not a definitive list. This is just an example of how to do it.

Jin explains that more detailed information could be sent by combining <> blinking patterns as well.

"If we use <> and <> to represent <->, <->->. This would indicate <> or <>, and so on."

Jin says you can send these signals by pushing and releasing the light switch.

It is the idea of Morse code.

In the end, it was quicker to send and receive voices directly by wind magic, so hand signals were not developed, and of course there is no Morse code.

"It may be a good idea to start with a few patterns at first and then increase the number of patterns, as you will not be able to remember too many."

He added that eventually a golem or a magic brain will be able to do it, so it will be harder to make mistakes.

"The advantage of this technology is that there is no need to add extra facilities on the flying machine side," he said.

The advantage of this technology is that there is no need to add extra equipment on the airframe side," he said.

"Thank you very much. That's a very interesting proposal."

Tomax Bartmann asked the assembled engineers if they had any questions. A number of hands went up immediately.

"Well then, Mr. Berlich?"

"Yes, sir."

Tomax Bartmann called Berlich, the man sitting next to Cacacea.

"My name is Berlich Becker of the Shoro Kingdom. What is your proposal just now, how long do you expect the interval between the flashes?"

The man answered,

"Yes, I am. is 0.5 seconds. > is 1.5 seconds. How about a pause of 1 second? It could be faster if it were controlled by a magic brain, though.

"Surely, that would be good. So you repeat the same signal?

Yes. As long as we check it visually, we can repeat it as many times as necessary so that if we miss something, we can review it again immediately.

I see. I see. ...... So, you are going to change the color for multiple planes. ......"

At this point, Jin suddenly realized. He wondered how he could tell which color lamps he should be concerned about.

Then, he hastily provides a different explanation.

"You can change the color for different countries, or for airships, hot air balloons, and wind-powered floaters (blow floaters)," he said.

"Indeed, it would be good to change the color for different models,...... Thank you very much."

Berlich Becker bailed and finished his question. Jin admired his comprehension in his mind.

"Would you like anything else?"

The next person to ask a question was Groma Tolley.

"This is Groma Tolley. ...... Well, then. Well, there are two magic tools in the world, the voice condenser and the loudspeaker, but what is the reason for not applying them?"

Both have been put to practical use and can transmit voices wirelessly over a distance of about 100 meters without any problem. Groma pointed this out.

"I will answer your question. There are two major reasons. First, it is a little too expensive to be loaded on a small wind-powered floatplane (blow floater), let alone on a large airship.

Since it is a magic device, <> and <> are expensive. That is the first point.

"Second, it is very difficult to make it possible to talk only to the desired airship or balloon."

If you can deliver a voice, you would have to exchange information through conversation, but there is the problem of not being able to pick out a specific person to talk to," Jin explained.

"Of course, I believe that both of these problems can be solved technically, and I hope that eventually we will be able to exchange information with a specific person by voice, as you say, Mr. Groma."

"Thank you very much."

After that, several more questions were raised, and Jin answered them.

Finally, Hitoshi said,

There may be people who cannot distinguish the colors or have difficulty in distinguishing the colors. In such a case, the colors of the lamps will not make sense, and the pilot or the person in charge of checking the lamps may need to be tested for such a problem.

He concluded his remarks by assuming the possibility that some of the participants might be colorblind.