The goblin cannon in the ruins is divided into three models, the smallest caliber is not much bigger than Rand's clenched fist, and the largest caliber is larger than the head of the Demon Tiger.

The structure of the three models is almost identical to the magic pattern, that is, a long tube, the outer magic pattern is responsible for absorbing magic elements, and the inner magic pattern is responsible for accelerating the ammunition in the barrel.

Rand took out some magic crystals from the secret chamber where the cannon was stored, and tested them separately as a source of magic for the goblin cannon. The conditions of the test are very simple, set up a half-length iron armor without magic patterns 50 meters away, and test three guns of each of the three calibers for a power test.

The process of testing was not complicated, but the results were interesting, with the same iron crossbow firing a single iron bolt, the smallest caliber gun could barely penetrate iron armor without magic patterns; The maximum caliber gun is better at penetration, but requires 5 times more crystals than the minimum caliber.

After switching to shotshots, guns of all calibers cannot be integrated through iron armor, and the amount of ammunition that can be fired by large-caliber guns is much higher than that of small- and medium-caliber guns, and of course the number of crystals required for large-caliber guns is also higher.

Even if he was mentally prepared, the power of the cannon was so small that it still surprised Rand, and in the current situation of the Galloping Horse Knights' per capita demonic pattern heavy armor, there was no room for this at all.

"Rand, I'll just say it, this thing is too powerful and too costly, instead of using it like this, it is better to put it directly on the magic weapon!" Seeing that the Demon Pattern Cannon couldn't even penetrate the iron armor, Agni was very happy.

"You're right," Rand stroked the flames, thinking in his heart why these cannons were so powerful, and after thinking about it, he found a primary magic rat for testing, a primary demon rat with a body length of more than 2 meters, and was halved by the smallest caliber magic cannon at a distance of 20 meters; At 50 meters, although the power of the cannonball has decreased, it is still no problem to kill a junior rat directly.

"Rand? What are you doing here? Grua watched Rand toss and kill a few demon rats that should have been brought to the table, and wondered.

"I don't think it's that the power of this cannon is too small, but that our armor is too powerful, and now even if we don't have magic patterns on our armor, we have added a lot of black iron, and the dwarves will also add strong runes, which must be much stronger than ordinary iron plates. With such a small cannon, it will definitely be difficult to fight such armor. ”

"yes, I just said it, why are you wasting these junior rats?" Agni said disdainfully.

"Who's to say it's a waste, isn't there still some meat," Rand waved his hand, ready to clean up and send it to the academy cafeteria. But before that, he still has one last test, that is, he doesn't use magic crystals, and directly uses his magic power to activate the magic cannon.

I saw Rand holding the cannon body with both hands, raising the elevation angle of the cannon, and rushing towards the cliff at the farthest point of the sinkhole, transmitting his magic power into the cannon body magic circle.

"Bang~" The magic pattern of the cannon body in front of Rand suddenly lit up, and the crossbow arrow made a cracking sound due to the friction between the high-speed and the air in the muzzle, and a ball of fire shot out like a meteor, hitting the very edge of the top of the sinkhole.

In the shock of the Agni, Demon Tiger and Gu Leia, Lan said indifferently: "Sure enough, this cannon can not only consume magic crystals, but even say that consuming magic crystals is just an emergency strategy, and the real use is to directly use magic power to fire!" ”

"That'...... That has to be high-level to make sense! If an ordinary mage fires it, it will shoot through the demonless armor at most."

"Even if it's only high-level, it's meaningful, Wendy, Firefly, Jonny, Sophia, and Lili are all almost at the top level, but they all lack combat magic!" Gruya saw the usefulness of these cannons, "If they can have one each, they won't need to spend energy learning combat magic." ”

"Yes, and we will have a lot of magicians and magisters who focus on production in the future, these cannons can be used as backup weapons," Rand nodded, "But for now, the greater significance of these cannons is to serve as a reserve of rare metals in the territory, the materials of these cannons are really real, I want to melt them all down and build a magic furnace for the new industrial area!" ”

"Who is so annoying! People are about to fix it, and they actually make trouble for me! Before Rand could continue, the elf Tyrisa, who was in charge of repairing the building, flew over, and was about to settle accounts with Rand, and Rand took a while to make her stop.

……

Until March rose, Rand and Gruena were studying the metal plates in the library inside the ruins.

As Randt had guessed, the metal version resembled a cassette tape or hard disk in his hometown, and when placed in the circle in the room next to the magic furnace, it could release some kind of holographic projection, allowing the viewer to be in the knowledge of the goblin, and the transmission of information transcended the language barrier and directly transmitted the meaning to the viewer's brain.

After the initial screening, these metal plates recorded the goblins' craftsmanship, technology, spells and magic circle knowledge, especially the space magic, metal smelting, coinage, etc. involved in the ruins, which are all very practical knowledge, but to the pity of Rand, there is no goblin's world view or magic view.

"It's a pity that such a powerful civilization disappeared overnight, and their descendants actually became like this," after watching the holographic projection, Gu Leia also let out a similar sigh as Agni and Rand, "I don't know what they did?" ”

"I guess whatever it is, it's inseparable from arrogance and blindness." Rand said with a smile.

Taking advantage of the fact that it was only him and Gruya in the room, Rand handed her a spatial ring, "This is the complete remnant of that goblin demigod, you should be able to use it to at least become a legend, right?" ”

Greya's eyes widened, she thought that there was only a demigod left here, it was the dragon Betos, but she didn't expect Rand to take a copy.

"Rand, this is precious, you should give priority to Halkala or anyone else who needs it more......" The dragon girl bowed her head, although she did want to take the ring, but a complete demigod skeleton was too precious.

"Halkala has her own path, whether it's Tenya or me, I hope you can become a legend, her head of the magic school, how can you be a legend, besides, don't forget to leave the remaining bones to me, I can be the core of space" Rand smiled and forced the ring into the dragon girl's hand, but felt a pain under his feet.

"Oops"

Greia flicked her tail in excitement, just in time to draw the rand "Ah, sorry, I'm so excited"

(End of chapter)