Grindelwald's actions were somewhat punitive.

As a matter of common sense, Percy, who was already so miserable, should be sent to the university hospital for timely treatment, rather than being the focus of attention as a model for display.

This is probably the difference between Grindelwald and Dumbledore, Dumbledore will choose to carry everything by himself in most cases, even after death, his arrangement will step by step drag the tool man to complete what he wants to accomplish, and completely complete the previous goal.

And Grindelwald is different, he is a real leader, in addition to having the same powerful strength and mind as Dumbledore, he is better at using all the powers that can be used around him, he understands better than Dumbledore that the power of one person is limited, even if he is strong to the point that there are few enemies, but he still pays attention to the strength of the collective.

He can directly suppress today's matter, and then take the lead by himself to lead the professors to solve such troubles, but what is the point of doing this?

Now that the little wizards have seen this and become a participant in this matter, it is better to let them participate in it formally than to let them whisper about it in private, at least in this way, it will also allow them to learn some useful knowledge, and by the way, it can also dispel some of their overly curious curiosity.

This group of energetic bear children who are as energetic as courting baboons have a terrifying ability to act on death, and if they are forced to press down, the threshold of the fourth floor will have to be broken, and that is the worst thing.

"Ravenclaw students from the fourth grade onwards are on the list."

After levitating Percy in mid-air with the Levitation Charm, Grindelwald took a roll call in a flat voice.

"As a member of the Tactical Intelligence Academy, I believe that you have all studied the professional courses of your academy seriously, and I hope you will not disappoint me today."

"Led by the prefect of each grade, the fourth-grade students carefully watched and studied, and the fifth-grade and above began to carry out the layout of the sand table deduction to build a virtual battlefield restoration map."

"This virtual battlefield construction does not use the regent, this method has great limitations, and there is a possibility of being deceived, inferred according to the existing clues, and then restore the facts on the scene."

Grindelwald glanced at the Ravenclaw students in the row, and after seeing their confused eyes, he sighed a little helplessly.

"Hogwarts can't keep up with the times, ....."

"I used to be a very prejudiced person, I used to think that wizards were superior beings, I looked down on Muggles, I thought they should be ruled by higher wizards."

"It was Albus, it was your headmaster who admonished me and stopped my madness."

"And what he said is not wrong, time has proven this truth, Muggles are indeed not what I think, they are human like us, they have the same wisdom as we are, except that they do not have magical powers."

"Even because of the large base, there are far more wise men with true wisdom among them than wizards."

"Before I came to Hogwarts, I thought Albus would bring those wisdom crystals here, after all, he had a thousand times better attitude towards Muggles than I did, and he would read Muggle books to get nourishment."

"I didn't expect that after a few decades, I would finally come to Hogwarts..."

Grindelwald shook his head, "It's not the foolish age of hundreds of years ago, and Hogwarts, which upholds the so-called tradition, will sooner or later be crushed by the wheels of history." ”

"Come to Durmstrang!"

Grindelwald smiled, "There, you will witness the magic of the new age, and the magic education of the new age. ”

His words made the corners of many professors' eyebrows twitch, this open-minded digging was too straightforward, but since his name was Gellert Grindelwald, the professors were not good at attacking him.

All the professors at Hogwarts together don't know if it's enough for him to fight alone, and in the wizarding world where elite individual power is paramount, the miracle of a single person against a thousand armies can appear.

"Since you haven't learned anything about this, let me take the lead in this scene restoration, first of all, we have to build the site to prepare for the subsequent profile."

Grindelwald raised his Browning M1935, a black phoenix flew out of the muzzle of the gun, then slammed into smoke, and a translucent black room appeared in the auditorium, the almost shattered room covered with rubble, blood and scraps of flesh splattered on the floor.

At least half of the young wizards were so frightened that they covered their mouths, even jumping three feet high to try to stay away from the ground, and the hourglass hanging on the wall of the auditorium told people that many people were really scared to cry because of the impact of this tragic scene.

All four houses have been deducted from their scores to the negative number, especially the hapless Gryffindor, and the double deduction has made the number they owe especially huge.

"This is the room at the end of the corridor on the fourth floor that is the scene of the crime, and if you can still hold a wand, now start building the magic projection of the person involved, and the projection of the three-headed dog."

Although the pale Ravenclaw students heard Grindelwald's words, and they had also learned this in their professional classes, at this time, their minds were blank, and the magic images built by these people were very distorted, and their different ideas would interfere with each other.

"You're the worst class I've ever met, if only in Durmstrang!"

Grindelwald waved his hand irritably, "Not a single one of them is angry." ”

"We've worked backwards from the scene, and it's clear that this room has undergone a violent explosion, as Professor Snape has told you, that the item that caused the explosion was a high-purity Type IV high-powered burst potion, aka C4."

"Now who can tell me where the initial explosion is?"

Under Grindelwald's grim gaze, the little wizards who forced themselves to look at the tragic scene moved, and they pointed to a pit that had not been smeared with minced flesh, where the explosion began.

"Depending on the condition of the detonation point, start simulating the explosion and recreate the scene, you can always do that, right?"

One of the Ravenclaw prefects nodded slightly, he took a deep breath, and then turned his head sideways and whispered a few words to the people around him.

A dozen or so wizards raised their wands, their muzzles spewing white threads, and after a few moments of calculations, the model of the explosion of fireballs was built.

"According to the depth of the detonation point and the traces of the square walls, the mass of C4 used in this explosion is about ten grams, which is about equal to the superposition of 2.5 powerful blasting spells.

Ravenclaw, who had gradually regained his senses, gradually sorted out his order after overcoming the fear in his heart.

"First of all, we can rule out that the C4 detonated in this event is a top-level version for the increase in blast power, but instead focuses on increasing mana penetration and is used to overcome high-resistance targets, such as the three-headed dog in front of us."

"Three-headed dogs, as treasure guardians commonly used by ancient Egyptian wizards, their resistance to magic is quite high, ordinary spells cannot cause effective damage to them, the attacker should have known the existence of the three-headed dog in advance, and carried the item in a targeted manner."

"Secondly, according to the damage at the scene, we can conclude that the three-headed dog was in the correct position when it was attacked by the explosion, and the three-headed dog that should have been in the room was near the entrance at the time of the explosion, and according to the damage to the wall here, the wall near the gate was shattered by the three-headed dog's body, not just because of the explosion."

"Based on the above speculation, what we can get is-"

As the Ravenclaw students continued to coordinate and correct, the projection of Lewe appeared in the room, and the three-headed dog standing on the inside of the room ran forward quickly, and then it leaned sideways against the wall, smashing the thick wall with the side of its body instead of its head, this strange behavior is a speculation based on the destruction of the scene, although this is not logical, but it is a reconstruction of the events of the time.

The exploding fireball blasted Lu Wei sideways and pushed it out of the room, and the flesh and organs that turned into minced flesh and organs also spread out a carpet of flesh away from the direction of the room, after which Lu Wei's trace was very obvious, and the three-headed dog left the room and galloped to the Great Hall.

"As for Percy...."

The Broken Ravenclaw student shook his head slightly, "We can't restore the situation when Percy was present at the moment, the explosion destroyed too many clues, I'm sorry Professor Grindelwald, we disappointed you." ”

"It's okay, it seems that Ravenclaw still has a few people who can use their brains."

Grindelwald nodded slightly, although they were still very immature, but at least they used their brains.

"There's nothing wrong with your focus on the three-headed dog that is the easiest to observe, but you are too concerned about the observation of the clues in the scene, and we should pay more attention to the clues provided by the person involved."

"That's the clue Percy Weasley gave us."

"First of all, we need to analyze his injuries, which is why I didn't let the professor completely heal him."

"There are two obvious types of injuries on Percy's body at present, the first is the crushing damage caused by the C4 explosion, the source of the injury to his lower body is the explosion, we can clearly observe that the explosion point is lower than the position of his feet."

Grindelwald pointed at the ragdoll-like Percy, his feet were completely gone, his left leg could still see the ankle, but his right leg was even half of his calf, and as he rose in height, the higher he was, the lower the damage caused by the explosion, and the dividing line was at the waistline where his navel eye was, where there was a clear row of tooth marks, almost biting him in two.

The upper and lower body separated by this tooth mark is very different, compared to the tattered lower body, the body above the tooth mark is almost intact, and even the clothes are not much damaged.

"At the moment of the explosion, the three-headed dog swallowed the upper half of his body, and there were intermittent tooth marks in the wound, which means that the dog bit him twice, twice in the same area with different force, the first time only biting a little rib, and the second time it almost bite, almost cutting his body in two."

"Judging by the tooth marks, as well as the condition of the injured part of the three-headed dog, it bit Percy with its middle head and tried to take him away from the center of the explosion when the explosion occurred, and the shock wave and impact caused the canine teeth to bite together, causing a second injury."

"The three-headed dog's unusual sideways stance is due to the fact that it knows that once it breaks its hind legs, it will not be able to get out of it at all, so it has to expose its softer side, and again, this posture helps to protect the middle head from a certain amount of blast impact."

"Since there are enough clues now, let's restore all the scenes."

The bloody ruins were transformed into a complete room in an instant, and the three-headed dog Luwei was napping in the middle of the room, and as the door was pushed open by Percy, the three-headed dog opened his eyes and let out a warning growl.

But the visitor didn't care at all, and walked straight forward, and he took out a bottle containing a high-energy burst potion, and he stepped into the range of Lu Wei's attack, which is the origin of the explosion, and then let go and let the bottle fall.

The three-headed dog pounced at this moment, biting Percy's upper body and crashing into the wall, the impact of the explosion shattered Percy's exposed body, and also shattered the three-headed dog's waist and abdomen on the left side, and the three-headed dog holding the rag doll began to run wildly after barely supporting its body, and disappeared into the simulation area in an instant.

"But why..... Why does the three-headed dog react so quickly? ”

"It's like someone told it what's going to happen next."

The student who immediately sensed that something was wrong asked Grindelwald a question, and the scene restoration just now seemed reasonable, but there were also things he couldn't understand.

"This is up to you to ask Professor Snape what the recipe for the High Power Burst Potion is."

"Volcanic hedron?"

A seventh-grade Ravenclaw student, who was a member of Snape's elite class, raised his hand.

"yes, but it has another name." Grindelwald nodded, at least in the area of the basics, Hogwarts students are very solid.

"Abyssal sulfur crystallization."

The student who had just spoken added, "No wonder the three-headed dog is so sensitive, this is their most annoying smell, unlike those underground races that look like it, the three-headed dog that lives on the surface does not have the name of hell, they are extremely hostile to each other." ”

"Yes, that's why the three-headed dog senses the crisis in an instant, and animals are more predictable than us humans in some places."

"Even if this three-headed dog has never seen its old enemy, the three-headed dog of Hell, its bloodline tells it all."

"But why?" Another student raised his hand, "Why would Percy go there with such a dangerous thing, and it was very stupid.... Suicide? ”

"Because someone needs him to do it, of course."

Grindelwald narrowed his eyes slightly and spoke in a flat tone.

"As for who that person is." A grim smile tugged at the corner of his mouth, and then he looked at the students present, "This is the homework I gave you." ”

"Let's check, since someone has already provoked Hogwarts, let's see if he is hiding deeper, or if we dig deeper."

"Albus will not allow you to do such a dangerous thing, but I will, the shame of being trampled on your face can only be washed away by your own actions."

Grindelwald dropped the last sentence and slowly turned away.

————

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