Both are magic guides, and the city defense magic guide cannon and the duelist arm he made are similar in structure, but there is no essential difference.

The structure of the magic circle, the magic power source, and the control switch are not many of the three basic components.

In addition, there are additional aiming components to increase the accuracy of long-range strikes from the city defense gun.

The reason why the city defense cannon is so much larger than the duelist arm guard is mainly because the structure of the magic circle is particularly large.

When he came over, he had already turned over the basic information of the city defense cannon on the carriage, and the spell carried by this fort was the sixth-order fire-based spell "Sky Burning Flame".

This spell burns an area for a long time, and while the flames do not kill people instantly, they cannot be easily extinguished by conventional means, and any object that passes through the spell's area will be contaminated with the "Heavenly Flame", which will be burned to ashes by the flames in agony.

This is a high-level defensive spell with great strategic value, and it can be imagined that when a group of enemy troops storm the city wall, the city defense cannon only needs to continuously release the "Sky Burning Flame" downward, which can form a large area under the city wall, causing considerable trouble to the enemy's siege.

Opposite to its power, as a sixth-order high-level spell, its magic array area is also quite large.

The logistics opened the door of the structural warehouse of the city defense artillery array, and Noren stepped into it, and what caught his eye was a large magic array with a diameter of seven meters, complex structure and gorgeous formation.

All kinds of mysterious magic runes are like a delicate mechanical structure, and under the power of the magic crystal, the surface texture of the magic array appears a hazy red, which looks so mysterious and beautiful in the dim room.

This is not only a strategic-level weapon, the crystallization of human wisdom, but also a beautiful painting, a perfect work of art!

"It's beautiful."

Nolan took a deep breath, and even his heartbeat quietly increased a few beats.

It's like a writer who sees beautiful verses, and a musician who appreciates beautiful songs.

As an alchemist, he couldn't help but feel thrilled by the large magic array in front of him.

"Can you understand what it makes?"

Wilson asked, stepping through the door.

"I understand." Noren froze, and a sketch of the structure of the "Heavenly Burning Flame" circle that he had seen in the information before came to his mind.

"Try activating the circle." He commanded the logistics officer.

The logistics officer activated the circle as he said, and with the infusion of magic power, the light of the circle lit up, but there was no sign of activating the spell

His eyes swept over the magic array in front of him like the most sophisticated instrument, comparing its patterns with those in his mind, and in a few moments he found the difference.

An area in the middle of the circle is dark and missing, preventing the mana from circulating in its entirety, causing the spell to fail.

"There."

Nolan stretched out his hand and pointed in the direction, Wilson squinted, and nodded in confirmation.

It's just that this time, he has a bottom on Nolan's technique.

This is not a simple matter of finding a difference, you must know that this is a large magic circle with a diameter of up to seven meters, and every position of the circle is painted with dazzling magic runes.

At present, there are hundreds of magic runes created by alchemists, and if you don't understand the structure of each rune and the meaning it represents, it is tantamount to looking for a needle in a haystack for a layman to find a palm-sized mistake on such a large array.

It's like counting the stars in the night sky, it's just a futile task.

Being able to find the missing runes on the magic array so quickly at least shows that the basic skills of Noren's magic circle are solid enough.

"Pen." Nolan reached out again.

Wilson opened the prop box he had with him and handed him the alchemy pen that he had prepared to fill and draw the circle.

Nolan took the pen, stood on the maintenance table next to him, and nodded to the logistics officer.

If a large magic array like this is damaged, the alchemist will not be able to reach that position outside the array, and he will not be able to step into the magic array with his feet, which may cause secondary damage to the face.

Usually at this time, the alchemist will be sent in with a maintenance table.

The so-called maintenance platform is a mobile platform that can only accommodate one person to lie flat, and this platform is erected at a height of about ten centimeters above the magic array.

The Alchemist reaches the damaged area through the maintenance table, and then lies on the maintenance table to repair the circle below.

This process is time-consuming and laborious, requiring not only theoretical knowledge, but also the practical level of the alchemist, which cannot be done by a master who is not proficient in the study of magic circles.

The logistics officer thought that the maintenance circle would be written by the old alchemist, but he didn't expect that it was the young alchemist who stood on the maintenance platform.

He couldn't help but be slightly stunned for a moment, seeing that the young alchemist was already frowning a little impatiently, and he didn't dare to ask more, so he immediately walked forward quickly and shook the mechanical arm.

Under Nolan's instructions, the maintenance table slowly stopped above the middle of the magic array.

He lay down, his right hand on the barrel of the pen, and stretched out to the missing part of the formation.

This was actually the first time he had repaired a large magic array, but his expression did not show the slightest panic, and his right hand was drawing on the base of the magic circle with strength and stability.

The special magic circle replenishment liquid filled the base of the magic circle along the tip of the alchemy pen, fused and solidified, and the missing piece of magic rune was perfectly connected to the magic circle.

From the perspective of a bystander, the part of the rune that was repaired was integrated with the original part without the slightest sense of disobedience.

"It's finished."

Nolan stood up and nodded slightly at Wilson.

It was not the power given to him by the book of omniscience, but the result of ten years of dedication to alchemy.

Years of experience in refining potions have trained him to have stable hands;

His tireless study of alchemy allowed him to master the structure and effects of almost all magical runes;

His natural self-confidence allows him to dare to say and do, turning all possibilities into reality.

I'm Nolan all on my own! The Book of Omniscience? It's just a small help......

The circle was repaired at this moment, and looking at the finished product in front of him, the pages in his mind turned again.

The sixth-order fire spell "Heavenly Burning Flame" has been recorded, and the knowledge points are +64.

All right! Nolan's eyes lit up.

This was the first time he had recorded a high-level spell, and the generous knowledge reward immediately nearly doubled his savings to 146 points.

It can be regarded as a surprise of this commission.

After maintaining the most important magic array, he jumped down from the maintenance table to make final adjustments to the other structures.

Check if the magic pathway connecting to the mana source is blocked;

Check whether the switch of the control path is out of order;

Correcting whether the sight of the city defense gun is biased......

It was indeed the first time he had maintained the city defense artillery, and before he came, he had only hastily skimmed through the maintenance manual of the city defense cannon in the carriage.

However, his knowledge of alchemy is solid enough, as long as he follows the steps in the maintenance manual and his own experience step by step, nothing will go wrong.

"Now begin the launch test of the city defense artillery."

After about an hour of repairs and inspections, Noren walked through the entire maintenance process, and then slowly pushed the lever of the city's defense magic cannon under everyone's gaze.

"Hum—"

The source of mana was connected to the structure of the magic circle, and the huge amount of magic power that poured in lit up the magic array, causing it to bloom with a dazzling red glow at this moment.

The entire turret trembled slightly in the resonance of the magic, and the air around it became hot and dry.

At the muzzle of the city defense cannon, a circle of exquisite and huge magic arrays began to take shape.

"The city defense artillery starts normal ......"

"The mana source is connected normally......"

"The circle structure warehouse is functioning normally......"

"Spell activation speed is normal......

Moments before the cast of the Castle Defense Magic Guide Cannon was about to finish, Noren pulled the lever and interrupted the release of the "Heavenly Flame".

"Everything works."

He exhaled softly and looked at the logistics officer, "This battery is no longer a problem, take me to the next place." ”

"Oh, oh......" Logistics came back to his senses and nodded repeatedly, "Please come with me." ”

Several people left the inside of the city defense cannon and walked to the next city defense gun, Wilson came to Noren's side and said curiously:

"You've had previous experience repairing magic guides?"

He originally planned to maintain the first city defense cannon by himself and give Noren a demonstration, but he didn't expect him to complete the maintenance alone.

If you're a newbie, it's hard to do that well the first time.

Nolan smiled and didn't explain, but said, "Since I have applied to the Society for the research of the Circle Study, I naturally have confidence in myself, so please rest assured." ”

"Okay." Wilson nodded and said no more, letting Noren maintain the next four city defenses.

However, what they didn't expect was that the situation of the first city defense artillery was already the best among all the city defense guns.

The problems encountered by the next four city defense cannons include but are not limited to damage to the surface of the magic circle caused by disrepair, damage to the base of the magic circle, or blockage of the magic channel.

As well as dealing with some steel rust and replacement parts.

Among them, there was a strange situation: more than half of the magic array of a city defense cannon was artificially smeared and damaged.

When I asked the reason, I learned that a former logistics officer had taught himself alchemy many years ago, and he happened to find that the circle was slightly damaged, so he took it upon himself to repair the circle......

As a result, the technology did not reach home, not only could not be repaired, but most of the front was damaged.

The legion is also wonderful, and it is said that it has caused such a large loss, and this logistics will most likely be punished.

As a result, until they retired and the new logistics were handed over, they did not find that the magic circle of the city defense artillery was damaged.

When the fort was recently maintained and such a large man-made damage was discovered, people had already patted their butts and didn't know where it was, and they couldn't find anyone responsible.

Thanks to this, repairs to the city's defenses alone took almost a day – and that was with Wilson also coming to help.

In the end, it took two days to repair the five city defense guns of varying degrees of damage, and it was not until nightfall the next day that Nolan was able to complete the commission.

"It's hard work."

Reiner, the deputy head of the legion, sent them down the city wall, "The cooperation with the Alchemy Society has always been pleasant, and within a week, we will complete the confirmation procedures as soon as possible and pay the final payment." ”

"That's really hard, I didn't expect all the city defense artillery to have so many problems."

Busy from morning to night for two consecutive days, Nolan dragged his sore back and said unceremoniously, "My suggestion is that I hope your legion can recruit a few fixed alchemists for logistics, city defense is not a joke, please be sure to keep these city defense weapons in a state of operation at any time." ”

Reiner narrowed his eyes and replied in a nonchalant manner: "Our legion has its own rules and regulations, so you don't have to worry about it. ”

"Alright, alright."

Wilson played a round in the middle, pulled Nolan back to the carriage, and persuaded, "What do you fight with him, we just need to complete our commission." ”

Nolan was stunned: "If there is a problem, there is a problem, is it still unspeakable?" If they neglect their duties and are breached by the steppe people, it is not us ordinary people who will suffer. ”

"It used to be peacetime, but now it's not the same, after all, it's different......"

"Even in peacetime, it is impossible for the City Lord's Mansion not to invest in the city defense budget, and I seriously doubt that the budget of these years has been embezzled by the legion."

"Alas, it's useless to say this, we are just people outside the system sent by the Alchemy Society, and we have no position to make irresponsible remarks about the internal affairs of the City Lord's Mansion."

"Does it really matter? We did five repairs, two days of intense work, and helped them solve 76 years of trouble at once, but in the end we were only paid for maintenance once. ”

"That's why I said, most of the commissions from the City Lord's Mansion are thankless messes."

Wilson shook his head and said, "Relax, if you treat it as a simple commission, it will indeed make people feel a little unbalanced." But it's not just a commission, it's also a review of you by me.

"After two days of review, I, as a reviewer of the Fa Circle Studies, recognize that you have the qualifications to apply for the research project.

"Now you can tell me what kind of circle research you plan to apply to the Society?"

After two days of tiring work, Nolan finally got to the point, and Nolan cheered up and said, "The research I want to apply for is 'Streamlining the Magic Array of Second-Order Spells 'Acceleration'. ”

Of course, this was just a front for him, a stepping stone to gain the support of the Alchemy Society and open the door to the Mage Academy.

Among the wind spells, the main spells related to flight and speed are:

Second-order spell "Acceleration";

Third-order spell "levitation";

Fourth-order spell "Flying Technique".

Among them, "acceleration" acts on unidirectional propulsion, and "suspension" acts on the lifting and stagnation of vertical axis.

"Flying Arts" allows people to move freely on the horizontal, vertical, and vertical axes, that is, the entire space.

In his design, Yuna's Valkyrie backpack will be equipped with all three spells.

With the blessing of these three spells, the Valkyrie Backpack will become the most perfect piece of equipment for solo flight.