The carrying Jin and the others arrived at the in about two hours.

It landed at the airfield of the < clan.

The scene was visible from afar, and many people had gathered at the airfield.

Of course, Zion himself knows this, so Zion D...... his <> is dormant inside <>.

"Jin, welcome. Makina, welcome. Welcome, Lako. Welcome to ......, Miss Erna."

First Zion greeted the guests.

"Makina-dono, Jin-dono, welcome!　Welcome, Miss Leco!　And Miss Erna, you say?

Rhodes also said a few words of welcome.

After being greeted by several other people, Jin and the others moved to the house of Zion ......, the residence of the clan chiefs.

At this point, the only members of the Nordic Federation were Zion, Rhodoth, Vita, Ludmilla, and a servant.

"Now that the schedule has been set, everyone is excited!

Theon opened his mouth.

"Yes, mine is 80% complete.

Rhodes laughed.

"That's exciting. I'm going to work on the competition site too.

"Oh, um, will Jin-san not be participating this time?"

Vita asked.

"No, not this time. "Yes, this time we would like to have a pure exchange between the northern peoples and the Laurentian continent people.

"Is that what you mean?"

"That's why I'm neutral this time. Otherwise I'd be happy to support Rhodes.

That's all I need to hear.

Rhodes replied with a smile.

"Oh, yes. < is over, let's have a private race somewhere.

"Oh, that sounds great, by all means!

And so it was decided.

* * * * * * * * * * * * * * * * * *

Jin stayed at Zion's house for a short time and returned to Horai Island soon after because he still had more to do.

"Yes, I'm home. There will be no change ......, but how are the preparations going?"

This preparation is, of course, the preparation for the redevelopment of the Kutsudo Mine.

, 50 Land troops, 2 Daedalus, and 2 .

"That should be enough."

We need a giant golem, <>, to maintain the airfield, and a < to excavate at great depths. And <> to maintain the tunnels, and < to smelt the ore.

"Okay, let's get started."

.

After confirming that the area around the Kutsudo mine was empty, the old man sent them all out by transporter.

After leaving the monitoring of the site to the old man, Jin finally relaxes and heads for <>.

"Welcome home.

<

"Well, a lot has happened, but it's over now.

Erza, who had been accompanying him as Erna, must have known him well, but Jin couldn't help but say so.

"Well, thank you," she said.

"Well, the Marikka Cup is coming up in less than a month. I'm busy with many things."

Knowing that Jin would not stay still for a day, Erza only smiled at him as she said this.

* * * * * *

And then, the Kutsudo Mine in the western part of Toka Village. The time is midnight.

The two Daedalahs step on their feet as they advance little by little, roughly completing the construction work.

The fine adjustments are difficult for the 15-meter-tall Daedalas, so that is the job of the land team.

After performing other heavy work such as moving large rocks and filling in large depressions, the two Daedara returned to Horai Island using the large warp gate of that had come to pick them up.

With this, an area of approximately one square kilometer was prepared as an airfield. Overnight.

When dawn broke, there was no sign of life in the area.

The land crew quietly puts the finishing touches on the ground, and the ground is covered with .

This engineering magic is Jin's original, and it hardens the ground as if it were paved. The good thing is that it is reversible.

This means that it is easy to put the ground back into place.

The land team continues its work and by the end of the day, the airfield will be completely leveled.

<<<< mole>> dig the vein>>

Concurrently, exploration...... or mining of the vein was also started.

> reveals rich gold and silver deposits 300 meters below the surface.

In another place, veins of magi crystals of all attributes are found.

The two moles dug at an angle of about 30 degrees, aiming at the veins. Their speed was one meter per minute.

300 meters is 300 minutes, or five hours.

The rocks crushed on the way contain iron, copper, zinc, etc., and are smelted by <>.

Although the content was low, the power source was free magic element (ether) in the atmosphere, and the smelting proceeded without regard to efficiency.

As a result, in 5 hours, about 200 kg of iron, 100 kg of copper, 60 kg of zinc, and 60 kg of nickel were smelted. 60 kilograms of zinc, and 10 kilograms of nickel.

The tailings are temporarily stored in a waste pile called .

The tailings have been ground into gravel and can be used for paving the macadam.

We are planning to pave the area around Toka village with it in the near future.

Ars has a thick crust for its size and is rich in underground resources. Whether we can dig them out or not is another matter. .......

<

The result of digging is that hydrogen sulfide is spewing out of the ground.

The exterior of the land and craftsmen (smiths) are made of light silver, or titanium, which is highly resistant to hydrogen sulfide.

However, the ordinary golems are often made of iron-based materials, which are less resistant to hydrogen sulfide.

The old man has taken the measure to reduce the immediate danger by eliminating the leakage route.

>

Since hydrogen sulfide is slightly heavier than air, the "Mere Old Man" thought that hydrogen sulfide could be stored underground and periodically treated to make it harmless.

It is also necessary to investigate whether the hydrogen sulfide is continuously generated or just accumulating.

If it is just accumulating, it would be easier to talk about.

Two days after starting such work, the inspector of the Klein Kingdom and Jin's alter ego (doppelganger) visited the mine.

"Ha ha, this is ......."

"What do you think?"

They found a one-square-kilometer airfield, a large zuri, and a smelter's hut had been built, and a new mine shaft had been added.

"That's just as I expected from Mister Jin."

In a month's time, this will be transferred to the Kingdom of Klein. The profit to be gained from this is not small.

The inspector, who had been watching the work for half a day, returned to the capital satisfied.