Late at night, in the dead of night, the library is brightly lit.

Teaching Hogwarts students is a job for Wang Xu to catch ducks on the shelves.

But since he agreed, he wanted to do a good job, not mislead people's children.

Wang Xu didn't sleep all night, and he looked up a lot of materials in the library, including about wizards, house-elves, goblins, werewolves, and centaurs and giants.

He researches information while trying to unlock the secrets of magic and wants to see if he can learn it.

After many comparisons, he found that magic was first in the hands of goblins.

In ancient times, there were few goblins, but they controlled the whole world.

Humans were only slaves of goblins at that time, and now house-elves are servants of goblins.

Just as some people who can play like humans and beasts, a small group of goblins have also made this attempt, choosing their happy companions on humans.

I have to say that although there is a huge difference in size between humans and goblins, they have something in common.

The first wizards born were all mixed with humans and goblins or elves, and under the aggressiveness of human genes, the fetuses born were also humans. Even if some people are very short, they are almost the same in appearance, just like Professor Flitwick in the Harry Potter world, with a bit of fairy blood.

At first, the goblin group did not notice this change, and even raised these mixed-race babies as if they were their own because of their low reproductive ability, and taught them the magic that belonged to the goblins.

But soon, the goblins felt that something was wrong, and the elves lived an average of five hundred years, and usually only two or three children were born in their lifetime.

And these mixed-race newborns can reproduce the next generation after more than ten years.

When the goblins became alert, they found that the number of half-blood humans with magical physique and learning magic was actually several times that of goblins.

Thus, the First Wizard War began.

The outcome of this battle is unknown, according to the fact that the goblins are still there, and they enjoy the rights, that battle should be a draw, and even the goblins have a slight upper hand, only because of the lack of follow-up and take the initiative to make peace.

The Second War of the Wizards was a hundred years later, and that battle was not with the goblins, but with the elves' servants.

The result of this battle is very obvious, the elf is defeated, and from then on the elf has changed from a servant of a fairy to a servant of a wizard.

These two wars are not well documented, and many places are not verifiable, leaving only a few words.

As a result of the two wars, the wizard established his dominance, driving out the goblins and enslaving the house-elves.

It has to be mentioned that in the First Wizarding War, there was a lot of ink to describe the word wand.

In the beginning, before humans had wands, even a dozen wizards would be defeated in the face of a goblin.

Because humans are not inherently magical creatures, they have a very low level of control over their magical power, and it is very difficult to cast spells without a wand, which requires extremely strong skills.

And after possessing the wand, humanity quickly launched a counterattack, and the war lasted for an ominous time, and the significance brought by it was indeed far-reaching.

Since then, the goblins have rebelled several times, but unfortunately they have never succeeded.

Most recently, in 1752, the elves united werewolves, centaurs, and giants to form a joint rebellion in many places.

The rebellion lasted for six years, culminating in the werewolves being crushed, the Centaurs being driven into the Forbidden Forest at Hogwarts, and the giants scattering and fleeing.

The elves also suffered heavy casualties in the rebellion, most of them retreated to Switzerland, and a few remained in England, even after 250 years, they still have not recovered.

"It turns out that the so-called wizard qualification is the bloodline inheritance of magical creatures!"

Wang Xu put down his books, these miscellaneous studies could increase his understanding of wizards, and also made him give up the idea of wanting to learn magic.

Looking up at the window, it was already dark outside, and thinking that he would start classes at nine o'clock, Wang Xu gave up the idea of continuing to stay in the library.

Walk out of the library and into the office that Dumbledore had given him.

Wang Xu's office is on the second floor, next to the Defense Against the Dark Arts classroom, which is a classroom on the outside and an office room on the inside.

Sitting in a chair in the office, Wang Xu thought about today's topic.

He doesn't know anything about magic, he can't cast spells or solve them, and he can't teach his students magic.

However, after accepting Dumbledore's invitation, he was thinking about what to teach, and after a long death, he decided to pass on what Yu Ze had given him to teach these young wizards.

Tracking vs. counter-tracking, assassination vs. counter-assassination, espionage vs. counter-espionage.

Wang Xu wrote and drew on a piece of paper, thought for a moment and filled in the guide on the use of light weapons and how to correctly use infantry mines.

It was busy for more than an hour, and the time pointed to eight o'clock in the morning.

Wang Xu stood up contentedly and began to decorate his venue in the classroom.

said that he was arranging the scene, but in fact, he was just a porter, and the weapons and commodities in the Grand Theft Auto world were placed on the shelves.

Anti-tank rocket launchers, high-explosive grenades, anti-infantry mines, six-barreled Gatling, Barrett sniper rifles, and the KA47 assault rifle, known as the king of land warfare.

After all this, Wang Xu sat in the classroom contentedly, waiting for his students to arrive.

"Hermione, it's only half past eight, we don't have to be so early, can we?"

"Isn't it good to come early, I thought about it all night yesterday, thinking about what today's new discipline will bring us, aren't you curious?"

With laughter, the door to the classroom is pushed open, and the trio of protagonists walk in.

The moment they entered, Harry and Hermione were blindfolded.

One of them came from a Muggle family, and the other grew up in a Muggle family, and they were no strangers to weapons.

Ron, who had never been to the Muggle world, saw Harry and Hermione's reaction, and whispered, "What's wrong with you, what's on these shelves?" ”

"Professor, is this something you're going to teach us?" Harry didn't answer Ron, but asked incredulously.

Wang Xu raised his head slightly, wearing a tunic embroidered with gold thread, and asked rhetorically, "Is there a problem?" ”

"These, these are technological weapons, right?" Harry said dumbfounded.

Wang Xu nodded noncommittally, and asked again: "Then what?" ”

"This is Hogwarts, the Academy of Witchcraft and Wizardry, these things are outrageous here, isn't it?" Harry had the illusion of walking into the arsenal, looking at the weapons on the wooden shelves and Hermione staring at each other.

Wang Xu didn't answer, just sat behind the lectern and pointed to the chair in the front row.

Harry sat down with a strange expression, he had so much to say, and for a moment he couldn't speak.

One, two, three...

As time passed, more and more students began to show up, and even Professor McGonagall, who had no class, appeared in the classroom.

Wang Xu didn't speak from beginning to end, allowing some of the academies from the Muggle world to popularize the weapons on the wooden frame to the people around him.

Ten minutes later, he looked down at his watch and saw that it was already after nine o'clock in the morning, so he got up and closed the classroom door.

"Good morning, students."

"Good morning, Professor!"

Whether he wants to or not, Wang Xu is a professor, and the students can only bow their heads in front of him to show respect.

Wang Xu stood on the podium, his eyes swept over the classroom.

Today is the first day of school, and there are not many classes in the morning, only the first-year students need to go to the flying class to report, and the second- and third-year students have to go to the magical biology class.

The remaining fourth, fifth, sixth, and seventh grades did not have classes in the morning, and hundreds of people from the fourth grade were almost standing in his classroom.

"There are a lot of students from the Muggle world who may have recognized what I was putting on the wooden shelf. Yes, you read that right, this is a weapon from the Muggle world, and that's what I'm talking about. ”

"Professor!"

As soon as Wang Xu finished speaking, one of his classmates raised his hand and stood up and said, "We are noble wizards, and we shouldn't accept Muggle things." ”

The young man who spoke had short blond hair, and his eyes were even more proud, as if he was telling the truth.

Wang Xu frowned slightly, his tone was mixed with displeasure, and he whispered, "Don't interrupt me, Draco Malfoy, that's unwise!" ”