At this time, Dumbledore and Kewen were tirelessly teaching and learning at the top of the column, and the atmosphere was becoming warm.

Below, the spider tide, which can barely see the ground, has gradually completely surrounded the column where the two were.

However, all the eight-eyed giant spiders could only raise their fronts high, looking at the two people above and sighing, but did not dare to go forward and try the defensive measures arranged by Kewen.

Therefore, all the eight-eyed giant spiders can only make a 'hiss' screaming unwillingly below.

The sound of the sound caused Dumbledore and Cowan to turn their attention away, and at the same time, they stepped to the edge of the platform and looked down at the spider group below.

Dumbledore was in a good mood at this time, so he turned his head to look at Kewen, and asked softly, "If there is no me here now, just yourself, what else can you do to deal with the current situation?"

Kewen thought for a while and replied, "I can only choose to use the 'Flame Charm'... The only group attack spell I know is the 'Flame Charm', and I want to use this spell to destroy all spiders, I'm afraid it will take a long time, after all, eight-eyed giant spiders are magical creatures and have high resistance to magic spells."

Dumbledore nodded slightly when he heard the words, reluctantly agreeing with Kewen's idea.

"But I read a book about spells in the library." Kewen continued: "That book was about 'fire magic spells'. There are two kinds of spells mentioned above, one is 'little magic spells'. Fire spell', one is the 'Hellfire Protection Charm'."

"I think, if it's the two fire spells, they should be able to destroy all spiders with ease, but I haven't found any books with detailed records."

Dumbledore was stunned when he heard the words, thought for a moment and said, "Yes, those two 'fire magic spells' are very powerful, and they are also very evil!"

"Evil?" Kewen was a little puzzled: "Isn't that an advanced usage of "Flame Curse"?"

"Forget it..." Dumbledore pondered a little, and after being silent for a while again, his expression became a little firm.

"These are not the knowledge you can touch now, but you are different from other children! Kewen, you are very different!"

Dumbledore used repeated words to highlight his evaluation of Cowan, raised his hand and patted Cowan on the shoulder again, and continued: "Cowan, do you know why many spells are classified as black magic?"

Kewen replied without thinking: "Is it because those spells are all lethal? Or are they difficult to cure?"

"No! It's not!" Dumbledore shook his head, and then taught with a serious expression: "Listen, Kewen! The reason why those spells are classified as black magic is because they require a prerequisite for release!"

"Prerequisites?" Kewen has no resistance to new knowledge, so he hurriedly asked, "What are the prerequisites?"

Dumbledore was silent for a while, and then he said heavily: "Malicious!"

"Evil... intention?" Ke Wen became dazed. At this moment, the light in his mind suddenly burst out, and many doubts about the curse in the past were completely solved at this moment.

Dumbledore didn't notice that Kewen's sight was out of focus. He turned his head to look at the sea of ​​spiders below where the 'clamor' was constantly 'clamoring', and said in a deep voice, "Yes, malice, you have to have a huge malice to release the spell, in order to make those The black magic was released successfully!"

"I seem to understand a little..." Kewen murmured.

Hearing this, Dumbledore was afraid that Kewen's understanding was wrong or incomplete, so he explained in detail: "There are many ordinary spells that can achieve lethal effects, but those spells are not classified as black magic. .

And those real black magic needs to be driven by 'evil thoughts' before they can be used successfully.

If a person uses too much black magic, then he must have frequent evil thoughts!

If things go on like this, that person's character will inevitably become distorted, evil!

This! That's why the magic world doesn't allow people to use black magic!

We can't let more wizards turn into twisted and evil people because of the use of black magic! "

After Dumbledore's detailed explanation, Kewen completely understood that emotions were also the key factor in releasing the spell.

"I……"

Kewen was about to say something, but was interrupted by a loud shout.

"Who—who is killing my descendants—"

A loud shout with an echo came from the cave of the eight-eyed giant spider's lair. Soon, an eight-eyed giant spider with a diameter of more than three meters slowly moved its eight feet and slowly climbed out of the cave. come out.

"That's Aragog." Dumbledore looked over there and explained to Cowen in a low voice: "The patriarch of the entire eight-eyed giant spider group, Hagrid's former pet."

After explaining one sentence, Dumbledore cast a 'loud voice spell' on himself, and then said to the cave: "I am the headmaster of Hogwarts! Albus Dumbledore!"

"Principal?" Aragog at the entrance of the cave looked puzzled: "Why did you come here? Why did you attack my descendants?"

Dumbledore didn't respond. Instead, he looked down at Kewen, raised his hand to hold Kewen's shoulder, and said softly, "Wait for me at the edge of the Forbidden Forest for a while."

Without waiting for Kewen to wonder, Dumbledore suddenly cast a spell.

The next moment, the figures of the two suddenly distorted and shrank, and disappeared in an instant.

After a while, Kewen felt as if he had entered a time tunnel.

As if flying in the air, the surrounding scene became hazy, and it was rapidly retreating.

Before he could see the scene around him clearly, another dizziness appeared, and then his feet touched the ground again.

In the 'virtual reality game', Kewen piloted various spaceships, so he was very resistant to this feeling of dizziness.

After quickly regaining his sense of balance, Kewen looked left and right and found that he had returned to the edge of the Forbidden Forest in a short time. Not far away was Hagrid's hut.

"Wait for me here." Dumbledore said softly again, and then his body suddenly twisted and turned, and disappeared in an instant.

Kewen opened his mouth slightly, blinked at the place where Dumbledore disappeared, and then whispered: "This is 'Apparation'... I want to learn..."

...

When Dumbledore returned, Cowan had been waiting at the edge of the Forbidden Forest for almost twenty minutes.

After Dumbledore's Apparition appeared again, he smiled and said to Cowen: "Let's go, let's go to the kitchen and let the old man try it too, how do you say that eating spider meat can make your body stronger? thing."

"Uh..." Kewen was a little dumbfounded, he didn't expect such a play to be waiting for him.

Dumbledore didn't care about Kewen's speechlessness. He led the way again and again, and said with a smile: "You know, I once discovered the 'twelve uses of dragon blood'. Maybe after verification tonight, we can find it again. A 'use of the eight-eyed spider's legs'."

Looking at Dumbledore, who seemed to have become an 'old child', Kewen could only shake his head and smile slightly behind him, and followed suit...