Not long after Green sat down, a dwarven professor walked into the classroom with something somewhat like a car engine, "Bang! ~" was placed next to the podium.

Most dwarves have thick beards, but the dwarven professors of the Wizarding Department are different from most dwarves who cherish beards. The dwarven professor shaved off his beard, leaving only a stubble on his face, with one-sided glasses hanging from the bridge of his nose, and a large number of tools hanging from his body, and he had the air of a craftsman all over his body.

Green sat in the back seat, looking curiously at the magic core on the podium. That magic core was much larger than Green expected, and it should be a large magic core used on some large equipment.

"Alright, let's start class!" The dwarf professor clapped his hands and motioned for everyone to be quiet.

With the voice of the dwarf professor, the students who were originally communicating in a whisper fell silent.

"This is the Wizard Core!" The dwarf professor patted the mechanical thing under his feet, and said to the students in the classroom with full confidence, "This magic guide core was originally on the magic guide cannon, because something failed, so it was sent to the academy for further study and repair, and it happened to be used by me as a teaching supply. Well...... Before I start studying, I ask a question. Does anyone know the difference between a magic cannon and a magic gun and a dwarven cannon? ”

A cadet raised his hand.

Professor Dwarf: "Gable! ”

A halfling student stood up: "The magic cannon fires energy balls, the magic guide gun fires metal projectiles, and the dwarf cannon also fires metal projectiles, but its power source is gunpowder rather than magic. ”

"Hmm...... Not bad. Sit down. The dwarf professor motioned for the halfling students to sit down, and then continued, "The magic cannon and the magic torch are both magic weapons, both have magic cores, both of which store and compress magic power, and when the magic power reaches a certain amount, the magic power is converted into magic through a specific magic power transformation magic array and launched out. The only difference between the Magic Cannon and the Magic Musket is the difference between the magic transformation magic array. So the question is, why don't we use the magic cannon to fire metal projectiles? Why don't we shoot energy balls with a magic gun? ”

The dwarven professor looked at the students around him and was silent for a moment, giving them time to think.

"One of the Ring spells is a spell called [Debris Scattering], which can fire objects weighing no more than one pound at an initial velocity of 30 m/s, and the magic circle used by the magic guide gun is a modified version of this spell. By increasing the cost of mana, you can increase the power of magic and make the object gain a higher initial velocity, as shown below. ”

The dwarf professor stepped on the bench, chalk in hand, and wrote a number and a formula on the blackboard.

"Seeing this formula, I think everyone can already understand why the magic cannon doesn't use power bullets, right?" The dwarf professor tapped on the blackboard, "Because the conversion efficiency is so poor!" After reaching a certain level of speed, the efficiency of mana conversion into speed has become unbearable! Consume enough magic to unleash a six-ring spell, only to fire an iron projectile with the same power as a dwarven cannon, and obviously no one can accept such a result. Although the energy ball will decay in the air, it does not require high speed, as long as it can be smashed into the crowd, it can cause powerful lethality! Therefore, the larger and stronger magic guide guns usually shoot energy balls, while the smaller magic guide pistols with weak mana output ability mainly fire physical projectiles. ”

The dwarf professor tapped on the blackboard.

"Okay, now that we're done understanding the artillery, let's study the core of the magic artillery!" The dwarf professor picked up the magic core at his feet and placed it on the table so that everyone in the classroom could see it clearly.

The Dwarven Professor picked up a wrench and a screwdriver, and quickly opened the outer shell of the Wizard Core, revealing the magic crystal inside the Wizard Core.

"We already talked about it in the last lesson, and the core principle of the magic core is to reverse the use of magic crystals that can be converted into any magic power, inject magic power from different mages into it, and transform it into neutral magic power, fuse it into one, and then send it out." The dwarf professor showed everyone the white crystal inside the magic core, "This white crystal is a magic crystal processed from magic crystals, the more magic crystals in the magic core, the higher the total amount of magic power it can store and gather." ”

“…… This is the mana input of the Wizard Core...... This is the mana output of the Wizard Core...... These are the magic delivery ......"

The Dwarven Professor introduced the various parts inside the Wizard Core to the crowd.

"Alright, that's the end of the introduction to the Wizard Core, let's inject magic and see how the Wizard Core works." The dwarf professor looked up at everyone, "Hmm~ Is there any student who wants to come up and try it?" ”

"Me!" Without hesitation, Green raised his hand and looked at the podium with glowing eyes.

"Huh?" The dwarven professor looked at Grimm's uniform, "Magic students, it's really rare, are you interested in magic techniques?" ”

"Yes." Green nodded and stood up, "Professor, the magic crystal should be the main component of the magic core, right?" Ordinary magic crystals can't be injected with magic power, so why can the magic crystal in the magic core be able to receive magic injection? ”

"Ha~ what a sharp child." The Dwarven Professor laughed, "That's right, this crystal is the most important component of the magic core, and it can even be said that this magic crystal is the core of the magic core. As for the principle of making magic crystals, that's not what this lesson should cover, if you're interested, you might as well move to the magic channeling department. I'm quite welcoming to gifted children. ”

"Hmm...... I'll think about it. ”

"Alright. Let's continue the class, so this observer of the magic department will come to the stage today and assist me. ”

Greeted by the dwarven professor, Green ran to the podium.

"Everyone, bring your glasses to watch the magic aura." The dwarven professor instructed the students, then turned to Green and asked, "Classmate, do you have glasses that observe magical aura?" ”

"Nope. However, I was able to use [Detect Magical Aura]. ”

Ordinary people can't see magic with the naked eye, but the Zero Ring Spell [Detect Magic Aura] can make the caster see the brilliance of magic power, and it is one of the magic that all legal professions must master.

"Hmm~ you use these spare glasses of mine." The dwarven professor pulled out a one-sided glass from his pocket and handed it to Green.

"Okay professor." Green took the glasses from the dwarf professor and put them on.

With the glasses on, the world was full of colours, and the air seemed to be filled with haze—the magic element floating in the atmosphere.

"Come, classmate, from here, inject magic into this crystal." Seeing that Grimm was wearing glasses, the dwarven professor began to instruct Grimm on how to infuse his magic.

"Okay, Professor." Green placed his hand on the crystal and poured magic into it.

The magic power was injected into the magic core, and the entire magic core began to emit a strong magical brilliance! The black mana belonging to Grimm traveled along the magic wires constructed from Mithril in the Wizard Core and was infused into the Wizard Crystal in the Wizard Core. In the magical vision, the originally white magic crystal began to fill, and it emitted a blue magic light......

Looking at Green's magic color, the dwarf professor raised an eyebrow. Is it actually black magic?

The dwarf professor glanced at Green, pointed to the magic core, turned to the students and said, "Okay, everyone can now see that Green's magic power enters the magic path core from the input terminal, and then is transformed into blue magic by the 'magic crystal'. When the magic crystals in the magic core are all filled, press this button, and then the magic core will release the magic stored inside from the output end here! Of course, we don't have a magic array on our side right now, so when I press this button, the magic power released will dissipate directly into the air......"

The dwarf professor was lecturing on Green's back, and Green looked at the large magic core in his hand, thought about it, and tried to lose some of the chaos magic into it......

A black pattern appeared in the magic crystal that emitted a blue light. And just then, the dwarven professor pressed the button for the mana output!

"Smack! ~"The magic crystal full of magic power made a crisp sound and exploded directly!

The dwarf professor wiped the crystal fragments from his face, turned his head, and looked blankly at the magic core that the crystal had blown away, and then looked at Green blankly: "What did you just do?" ”

Green squatted on the ground and looked innocently at the crystal pasted professor: "Professor, I didn't do anything." I'm just injecting magic into it, as you tell me. ”

The dwarf professor looked at Green with a suspicious expression, and then at the magic crystals that had all been blown up, dazed.

Could it be that there is something wrong with the magic crystal of the magic core?