- "The devil is increasing, and we are getting fewer. The holy city of Taqira has fallen, and we are scattered. Climb over mountains, cross rivers, and run as far as you can from the gates of hell. But next time, where can we escape?"

"What do you think?" asked Roland in the office, closing the Book of Transfiguration and turning to the scroll.

"If the knight is not mistaken, this is a great coincidence. The contents of the treasure map are consistent with the essays recorded in the ancient books, which can be said to prove that the church once built a city in the depths of the wilderness to ward off the devil. The location shown in the drawings may be a tower, a post, a warehouse, or something else they built. ”

"What do you mean...... It's not really a treasure map?"

"Of course, the Church is not a bandit or a pirate, and they don't need to hide their treasure and leave a blueprint for future generations. ”

Roland nodded, "That's right." So...... Is this actually a map?"

"Nine times out of ten. It's not clear why the Church didn't record the history of this period, but I think there must be more than one remains buried in the forests of the East. "If the facility marked at this site is just an above-ground building, it will be difficult to leave anything after hundreds of years." However, if it has a storage warehouse such as a basement, it is likely to be another underground ruin. Through it, we may be able to find some clues. ”

"What clues?"

"Why do the Church hide the existence of the Devil, why do they resist the Devil and keep it secret?" she paused, her voice a little lower, "and ...... Why do they hunt witches like devils?"

Roland didn't know how to comfort him, so he had to be silent for a moment before he slowly spoke, "It's a pity that I don't know if his drawing is accurate or not, listening to his words, the original drawing is not like it was drawn by hand." ”

"Why don't you let Nightingale go to the knight's house?"

"Not proper," Roland vetoed, "for a family that can pass on a treasure map for hundreds of years, the storage room may be filled with Divine Punishment Stones and traps. We'll talk about that later," he said, comparing his fingers to the sides of the triangle, "and we can't reach this place now, anyway." If we consider this point at the foot of the northern slope as a mining area, the location of the six-pointed star is at least fifty kilometers away from us, which is about the distance from the border town to the fortress of Changge. Except for lightning, which can arrive in a day, everyone else has to walk for two to three days, and what if they encounter a devil on the way...... I don't want you to slip up the cracks. ”

"You can let lightning probe this woodland from the sky first, and you might find something. The scroll proposed.

"It's a viable option. Roland stood up, "I'll tell her when she comes back." Now I'm going to go to the North Slope Mine, you should prepare the teaching materials for the lecture first, and if you need to make more copies, go to Soloya, and you will have to continue to teach them tonight. ”

Roland instilled in the books the initiation he had received in elementary school with the court education of the Four Princes, including categorical memory, phonetic alphabet reading and writing, and memorization of phrases. With these, he believes that the other party will be a good teacher.

"Yes, Your Highness. The scroll saluted.

The backyard of the firing room in the North Slope mining area is now more than twice as large as before, and there are still two unfilled holes in the ground where the embryos of the twelve-pounder guns were cast. When Roland arrives in the backyard, Anna is practicing her new abilities, with two manufactured steel pipes on the table.

He picked up one casually and looked at it, the steel pipe was round throughout, the parts without pores on the surface were flat and smooth, and the round hole in the middle was the same as the outer wall, and the bright area in a straight line could be seen when aiming at the sunlight. Roland used his fingernails to jam the wall thickness at both ends of the card and found that it was basically the same.

Roland was amazed, "How did you make this?"

"Look," Anna said, picking up a freshly cut steel rod and laying it flat in her hand, a thin black wire inserted through the end until it was completely penetrated through the rod, and then rotated around the center to complete the opening.

With an astonishing ability, he thought, to cut objects with a hot magic line with controllable precision, Anna is enough to single-handedly push the town's industrial products to new heights. Suppressing his excitement, he said, "Let's do some basic tests first." ”

The basic test includes the range of competencies, the intensity of competencies, and the duration.

The Nightingale also emerges from the mist, and she is responsible for observing the changes in Anna's magic.

The results showed that in addition to a significant increase in the strength and duration of the ability, the Black Flame still had a range of five meters, and could only be accurately controlled within three meters.

At the same time, it is still a summoning ability, and the Punishment Stone can remove the Black Flame effect, or it will suddenly disappear when Anna orders the Black Flame to enter the Punishment Stone's area of effect.

It seems that unless you evolve to be able to use magic directly, you won't be able to get around this hurdle. Roland thought.

However, Anna's new ability still has earth-shaking significance, using black flame to make industrial machine tools, regenerating all kinds of machine tools, and the level of machining is a shortcut to a rapid climb.

However, industrial mass production is never something that can be done by one person. For example, the furnace that Jean Karl built on the side of the mountain on the northern slope has now completed one. After putting it into use, it was found that the clay bricks were fine, but the temperature was never up to the standard when the cement was burned, so that now the cement needed in the border town still depends on Anna to produce it - fortunately, when she is an adult, she can complete the calcination even if she does not stay in the dusty room.

Roland is not without a solution to the problem of furnace temperature, for example, it can be used with a steam engine to blower to increase the furnace temperature, and then set up an exhaust gas circulation channel to improve the use of lost heat energy. But the production of the steam engine is also inseparable from Anna, from the casting of key components to welding, she has to complete it by herself.

It can be said that the current industrial products of the border town are all based on Anna's ability, and once she is gone, the so-called industrial development is just a flash in the pan.

In the Demon Moon, everything Roland did was to meet the emergency, and now that the threat of the evil beast no longer exists, and the fortress of Changge has provided a large number of people and funds, he naturally wants to set out to change the situation.

- "Let's start with the basics. 」

He asked Anna to cut out a piece of steel two fingers wide and about one millimeter thick, then pick out the standard centimeter-long iron ruler that had been established earlier, take a short distance as the fixed length of the black line, and repeat it until ten black lines were roughly equal to the standard centimeter. Then let the black line climb up the steel sheet, ablating one vertical mark after another. Under the control of the black lines, the distance between each vertical mark is almost exactly equal.

Roland planned to start with a ruler and make a batch of original samples from all kinds of measuring tools, while harmonizing weights and measures. These standard units will also be written into norms and manuals to be added to the upcoming universal education. (To be continued.) )