"First, let's go over the magic puppets. Since you all know about them, let's quickly skip this part."

Felix flicked his fingers, and the magic puppet on the table quickly moved, making all kinds of incredible movements under his control. Finally, the magic puppet released a fireball as the end.

The little wizards looked at Felix eagerly, and he smiled gently: "After the course is over, I will give one to each of you, without any restrictions. I hope this will become a tradition of Hogwarts. Before next Tuesday, you can enjoy the fun of magic puppet battles."

Hermione's eyes were fixed on the puppet with ice-blue hair, and she saw the same blazing gaze from the Slytherin girl named "Greengrass".

She pursed her lips, she would never give in!

She has been looking forward to it for a whole year.

The brown-haired girl opposite gave the same look in return, and they all realized: the war has begun.

"Next, there are seven kinds of pocket spyglasses."

Felix walked from one side of the podium to the other, and his left hand slid across the table. A faint fluorescence bloomed on the ring, and a row of spyglasses appeared on the table. The little wizard stretched his neck and looked hard.

"What you see are seven kinds of spyglasses. Now, in order to make you feel a little involved, I want to ask: What is a spyglass?"

Hermione raised her hand, but Felix specifically mentioned Draco Malfoy's name for balance.

Draco stood up and said, "It's a detector used for alarm. My father said that the ones sold on the market are all rubbish. The spyglasses in our family are all specially customized."

Felix glanced at him and said, "This only represents the views of a few people... Let me tell you, in the eighteenth century, the wizard Edgar Straug invented the prototype of the spyglass. It was a dark magic detector, and its shape was very similar to the gyroscope commonly used today. But in fact, magical items with similar functions can be traced back thousands of years, although they were not called this name at the time...

If we look at it from the perspective of later generations, we can think of the spyglass as a type of detection and alarm equipment. A general term.

In modern times, it is divided into more specific categories, and many derivative magic items have been born, such as Gringotts' honesty detector, whose shape is completely different from the original design and looks like a thin golden antenna;

or the mystery detector, which can detect conspiracies or lies;

the function of the peephole we have seen so far is basically limited to discovering suspicious people or detecting some black magic.

But in fact...

it can do more.

For example, early warning for specific magic;

for a certain behavior;

or even for a specific bloodline, so that... a certain person. "

Felix's words were very shocking, completely subverting the young wizards' understanding of the peephole.

Most Slytherin students were skeptical, which was contrary to the education they had received since childhood.

But some people firmly believed in Felix's words .

For example, Ron did not reject having a peephole for Malfoy. Think about it, as long as he was 100 feet away from him, he would get the news, and he could hide in the bushes or behind the gatepost of the courtyard, waiting for an opportunity to curse Malfoy.

For this, he was willing to pay a whole year's pocket money, and it would be even better if he could make it himself.

"Professor, so, if I hate someone, I can make a spyglass for him?"

Ron said loudly, looking at Draco Malfoy without hiding his expression.

Draco's expression became dangerous, and he squinted his eyes and said, "Weasley, maybe you can put a spyglass in your house... to prevent mice. If one Knut is missing, your mother won't cry bitterly, right?"

"Malfoy, you bad seed..."

"Okay, don't argue. Otherwise, we will deduct 50 points each, plus three weeks of detention." Felix said speechlessly. He had never realized that Malfoy's sarcasm was so strong before.

"As for Weasley's previous question, the answer is that I can do it, but as for you, don't even think about it..."

"It's better to train your eyes to be smarter."

Professor Hepp's words made everyone feel helpless. After listening to his description, the little wizards did have similar ideas to Ron. You know, everyone has one or two people they hate.

Neville's idea was more normal. He hoped that he would have a special mirror to remind him not to lose things, but he was worried that he would lose it. It was not impossible. His memory ball disappeared in the same way last school year.

Neville wrote down "Good Luck" on a piece of parchment in distress. This was the password for the Gryffindor common room, but he could never remember it. For this reason, he would write this word anywhere he could see whenever he had time.

According to his idea, as long as he recorded the password in enough places, he would never have to worry about forgetting the password again. Even if he tried his luck, he could get it right once or twice...

"Okay, let's take a look at these seven mirrors." Felix waved his wand casually, causing a fist-sized brown chestnut mirror on the podium to float into the air.

"The first type is the most common type. All the products sold on the market are of this type. At most, the appearance has some changes. They are not very targeted, the effect is average, and they are prone to errors. The advantage is that they are easy to make and cheap."

"But it is barely enough to defend against dangerous creatures when camping in the wild."

"The second type is similar to an honesty detector, which can detect the hidden spells on wizards."

"The third type targets black magic. My type can detect seventeen relatively bad black magic, including the Unforgivable Curse."

He shook out a heavy black light, and the peepscope immediately issued a sharp alarm sound.

The young wizards in the audience looked at Felix in fear. The black light seemed to be able to lock any light. But he continued to speak with a normal expression,

"The fourth type targets specific spells. It is essentially a derivative of the third type of peepscope, but its application range is more flexible. The one in front of me targets the disarming spell. Does anyone want to try it?"

Felix asked, pointing to a gray walnut-sized peepscope.

Everyone looked at Harry. In the recent rumors, he killed a group of Dementors single-handedly with the Disarming Charm.

Draco didn't believe this at all. He firmly believed that all the versions that appeared so far were false. Putting aside all the embellishments: Potter encountered Dementors and then fainted. This was the truth of the matter.

So he mouthed "Dementors" to Harry.

Harry was a little nervous and a little excited. He looked at Draco provocatively and waved his wand. Silently, an arc of red light passed by the Slytherin students' seats.

From beginning to end, he did not pay attention to his spell, but stared at Draco.

To Harry's satisfaction, his face turned pale.

As Harry's spell was activated, the gray mirror in the air began to spin, and it kept flashing red light and making bursts of buzzing sounds.

Felix explained: "You see, this is the case with the peeping mirror for specific spells. It seems useless, but if you put a peeping mirror for conventional 'unlocking spells' in the room, it may have an unexpected effect."

"You know, ordinary peeping mirrors can be blocked. You never know if the person standing outside your room is a prepared dark wizard." "

The fifth type is targeted at specific bloodlines. Just know it, I won't elaborate."

"The sixth type is targeted at specific people. The principle is very simple. You only need a lock of the other person's hair, just like a polyjuice potion..." "

And the last type is targeted at specific feelings. I have a 'joy' peeping mirror here. It's interesting, isn't it? If you plan to tell a joke, it will help you understand the true emotions of the audience."

"Does anyone want to try it?"