It's not that hard to open a hospital in another world, right?

Chapter 151 Training class, new magic, bat... B-ultrasound! ! !
Big win!

Big win!

The Magic Council wins!

Not only won a complete victory in the sub-battlefield, annihilating the squadron of the Church of the Lord of Glory, flattening the coalition forces in Midland County, but also successfully defeated the rebels in the main battlefield, in the royal capital, with the coalition forces of the Magic Council and local nobles , Put the false king who just ascended the throne into prison!
But these have nothing to do with Gretel.He hurriedly met with the teacher, the bald bishop, and the others, and explained that he was going to the headquarters of the Magic Council for advanced studies, and was carried onto the airship by Archmage Carlisle.He has been absent from school for three months!Why don't you hurry up and go to the headquarters for class, what are you trying to do!

Gretel was thrown into the training class in a daze.The large room of 80 people was full of teenagers and girls, more people than Gretel's junior high school in his previous life.Seeing Gretel being led in, everyone looked sideways.

"Who is this?—so late?"

Two rows back in the middle of the classroom, a blond boy glanced back and whispered to his seatmate.The girl seated with him also glanced at Gretel, turned her head and looked straight ahead, only the pearl earrings swayed slightly on the beautiful earlobe:
"I don't know... But it's so well dressed, it doesn't look like the child of some master..." "It could be a student? Otherwise, how did it get in? My cousin didn't even get the quota!" Behind the girl , another girl leaned forward and whispered.Immediately someone interrupted across the aisle:

"Yes, it is said that there is only one quota for each county, age, level, and research results. It is very difficult!"

"God knows whose results were robbed and stuffed in..."

Gretel: "..." I said, do you really think I can't hear you?

He pretended not to hear anything.

The students in the classroom, the older ones looked less than 20, and the younger ones hadn't fully grown. They were almost a group of students from the second year of junior high school to the third year of senior high school.It is the time when young people don't know how to feel sad, and they are young geniuses selected from various places. It is absolutely impossible for them not to gossip.If you care about yourself with a group of children, isn't that the more you live, the more you go back?
Gretel selectively ignored that he was only 16 years old, a little younger than the median age of this group of people.

He craned his neck and looked towards the podium.The magic council paid a lot of money this time, and all the magicians who gave them lectures were great magicians above the tenth level.Is the lecture easy to understand? Gretel hasn't heard it yet, at least at that level—

As soon as the first class started, Gretel was struck by the gold thread on the corner of the teacher's robe.

grade eleven.

He looks only in his 40s, and his movements are light and nimble. He is not the kind who relies on the rank of a magician to delay aging and pretends to be tender.High-spirited, young and promising level 11.

——In the previous life, this was equivalent to letting a group of top professors give lectures to the students in the junior class of the University of Science and Technology, right?

He was silent.The teacher stood on the podium with a smile, without textbooks or chalk, and put a small box on the podium, and the sound of metal impacts inside was crisp and pleasant.

Gretel sat up straight and looked around.The teacher waved his hand casually, and there were lines in the air, condensing a large piece of text and pictures:
"Today we will talk about [Earling Screech]. This is a level 1 sonic spell, and it is the basis of the evocation-type sonic spell—please note that it does not belong to the same category as the level 0 [Phantom Sound]. It's not the same, never apply it when you study..."

Two spell models appeared in the air at the right time.The black model lines, and the key nodes are deliberately circled with red lines. Any magician with eyes can see at a glance that the two magics are indeed very different and cannot be applied at all.

Magic tricks, magic tricks again, but compared to Master Lorentz who used magic tricks to draw tables on the wall during his assessment in the Magic Tower, this Void Painting is much more beautiful.Gretel secretly sighed, and lowered his head together with the students in front of him, scribbling and copying:

"The series of [Earling Screaming] has been going up, level 2 [Shattering Sound Wave], level 3 [Disturbing Noise], level 4 [Roaring Technique], all the way to the highest level [Howl of the Banshee]. Usually , we can rely on the spell model to send out [ear-piercing screams] without using spell-casting materials—”

He paused and opened his mouth.The students in a classroom hurriedly set up various defenses, including shield spells, mage armor, and simply brushing [improving resistance] for themselves.After everyone finished defending, the teacher took a breath, and the sharp whistling sound pierced through in an instant.

... Good guy, is this as good as the sound of a dolphin?

Gretel's face contorted on the spot.Front left and front right, the faces of other students were also twisted so that they could not be seen, completely losing their initial demeanor of handsome men and beautiful women.The teacher smiled and said:

"Theoretically, a magician can use all the mental power of the day to cast [Earling Screech]. In fact, no one does this. Do you know why?"

why?
Gretel pursed his lips silently.The teacher saw his movements at a glance, and pointed at him casually, and a big bright yellow mark fell on his head:
"The gentleman in the last row, please answer!"

Gretel subconsciously wanted to look up.Teacher, what you poke on my head is not an exclamation point, is it?
Or is it a question mark?
Are you marking me as an NPC?

He tried to concentrate, got up and answered:
"Although the sonic attack of [Sharp Screeching] relies on magic to amplify, the basis is still the magician's own scream. Such a high-frequency sound is very harmful to the vocal cords..."

Looking around, seeing that the students were all at a loss, he immediately changed the words, "It hurts the throat very much. Therefore, if you are not confident in your healing skills, it is better to control the number of times you cast spells, or keep healing medicines on hand."

It’s okay to use this thing once a day, five times a day, eight times, ten times a day—Sir, even if your vocal cords aren’t torn, at least they’re swollen, right? "

So what magician would come up with the idea of ​​howling at the top of his lungs - wouldn't you have a flute, whistle, or at least a tuning fork?

At the front of the classroom, the magician who was lecturing opened the box and raised the short metal fork...

There was a low exclamation.Gretel pretended to be copying the teacher's handouts, and quickly scribbled on the notebook: "[Harring Screech] You can use a tuning fork as a casting material, and there should be a correlation between the frequency of the sound wave and the length of the tuning fork... If you want to emit infrasonic or ultrasonic waves, you need to find other Material……"

The magician waited patiently for a moment while the students finished copying the notes.He rummaged through the box and pulled out a piece of parchment:

"In addition to causing damage, sound wave magic can also be used in many occasions. In the latest issue of "Ordinary Arcanist Monthly", the "Little Bat Flying Experiment Explores the Application of Sound Waves in the Field of Magic Detection", and the resulting The new magic created is a very good example..."

The magician was eloquent, and made a very high evaluation of the research ideas of this paper, the process of the controlled experiment, the principle of magic, the application prospect of using high-frequency echolocation to detect the environment, and so on.And Gretel was sitting in the last row of the classroom, only one word echoed in his mind:
Super B!
Super B! ! !
　Thanks to @银银武师 for the reward of 500 starting coins

　　Thanks to @ screw ls for the reward of 100 starting coins

　　The title of the thesis mentioned in this chapter is "Exploring the Application of Sound Waves in the Field of Magic Exploration by Bat Flying Experiments", a tribute to Chapter 6 of the third part of "Arcane Throne" "Castle in the Sky"
　　But don't worry, here is just a mention, I will play my own tricks later~~~
　　Ask for subscription, ask for monthly pass, ask for collection, ask for recommendation...

　　
　
(End of this chapter)