The auction ended after six items were sold.

By the way, since neither Jin nor Erza was interested in those items, other participants bid on them.

"Thank you, Mr. Jin.

"Thank you, Ms. Erza."

The officials are responsible for the delivery of the purchased items.

Jin and his friends are staying in a room at the royal castle.

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

After returning to their room, Jin and Erza took a bath and ate dinner in a refreshed state.

The dinner was brought to their room, so Jin and Elsa were chatting with each other.

Reiko is serving dinner and Hope is standing guard near the door.

Najas Khan excused himself.

"That was pretty interesting."

"Yeah."

"But there were very few works of art, or artifacts, ......."

In Jin's image, an auction was an auction of art works.

In fact, I think that the free market was more likely to deal with such items.

Jin looked at the wolf figure he had bought from an unknown boy.

"Hmm, perhaps this country doesn't have much room for such things yet," he said.

Jin nodded at Erza's words.

"Maybe so. ......"

Jin thought that this might be a good way to see the level of culture.

"One thing I'm wondering about is the guy who exhibited the magic stove saying that he used to use it.

"Hmm, I know. ...... I got a replica of a dagger from him a long time ago, but I think it was probably made by that selfish royal family member or something."

"I'm sure you're right. The original was recovered afterwards, I'm sure of it.

And the original dagger was buried with Erza, the <>.

As for the magic stove, the old man is investigating the matter. The truth will be revealed soon.

While drinking tea after dinner, there was a knock at the door.

Hope answered the door and saw Najas. Behind her, a servant was pushing a cart, on top of which was the item she had acquired at the auction.

"I'm here to deliver it to you, sir."

"Just in time. Thank you."

Jin gets up from his seat and thanks him. Hope took over the cart.

"Now, if you'll excuse me."

Najas did not enter the room, but bowed and left.

"Well, ......."

Looking at the carts, Jin thought for a moment about which one to pick up first, and then chose the round magecrystal found deep in the mine.

"<>...... Oh, I knew it was no good."

The heat of the lava and the aging of the magecrystal were so severe that there was not much information left on it.

"The original was of low quality. ......"

Only a fragmentary <> remained.

Even so,

"I knew it was made before the Magi Wars.

I could understand at least that "this is a pre-War of Magi". The reason is that the format of < is old-fashioned. It is not used today.

"Next, a piece of <>."

Jin was wondering if this one was probably a piece of or a piece of storage that recorded some kind of information.

"<>......?　This one seems to have some data left."

Jin continues to use engineering magic to read the data.

"<>......Hoh..."

"Hmm, interesting."

There was an image record in this fragment.

"Is this what ......<> looks like?"

"Looks like it."

The image shows more than 100 golems lining up and then marching in formation.

"The rest can be found at ....... Oh, the data is corrupted here. Let's not do this."

Jin hoped that the old man would be able to analyze the data and complete it, so that he could learn something new.

"Here's the last of mine.

It is the remains of a golem.

"The material is ...... and ......, it's a very old golem after all."

The skeleton is a now-discontinued carbon steel. It contains a small amount of silicon.

Silicon decreases toughness and increases hardness. In other words, adding too much makes it harder and more brittle.

"0.4 percent silicon and 0.1 percent sulfur. That's a lot of ......."

Sulfur also has a significant effect on the properties of steel.

It is mainly thermally brittle, meaning that it becomes brittle when heated.

"Another 0.2 percent is phosphorus, which is also high."

Phosphorus, contrary to sulfur, makes steel brittle at low temperatures.

"So it could have been a mass-produced golem."

It seems unlikely that the magecraftsmen made each of these golems individually.

"There are no muscle parts left. They must have been made of biomaterials.

Biomaterials deteriorate if they do not have magic power circulating through them. After 700 years of destruction, it is not surprising that they are gone.

"The control core (control core) is ...... ah, too bad, there is no control core left."

I did not expect that much, but it is still a pity.

"But this remaining exterior is interesting. ......<>......I knew there was manganese and vanadium in it."

These additions, though in small amounts, improve the hardenability.

Good hardenability means that when quenching a large object, the quenching will go deep into the material.

In other words, a steel with poor hardenability is hardened only on the surface but not in the interior.

The hardened steel becomes martensitic and expands slightly, so poor hardenability can distort the overall shape and even cause cracking in severe cases.

Therefore, the steel used for <> is the one with good hardenability.

"The exterior, i.e. the armor, is made of high quality steel, but the skeleton is of poor quality. This discrepancy is probably due to the fact that they are not made in the same workshop or factory.

You mean division of labor?

The skeleton is made in factory A, the musculature is assembled in factory B, and the exterior is made in factory C.

"I see, that makes sense."

<.

And the real final item was the dagger Erza had bought.

"What's in the ...... blade is silver.

"Yes."

The one Jin made was mithril silver......925 mithril silver, but this was just silver.

"It's too bad it only looks ...... good."

"Well, I guess that's about it. But the design looks exactly the same."

"Hmm."

Only the appearance is very well done. Jin is impressed by this point.

I'll keep it in my room as a memento.

"I see."

The items he bought at the free market are in the hurricane, so he can't check them here and now.

"Well, I guess that's all right."

"Hmm."

Thus ended the auction between Jin and Elsa.