After eating a whole piece of chocolate, Hermione returned to normal. Although she looked quite tired, at least her IQ was back online.

"Professor, is this the disadvantage of the Thinking Cabin? I feel like I haven't slept for three days and three nights, and then this fatigue came over me all of a sudden." She described her feelings. .

"This is one of the disadvantages: it will accelerate the consumption of your energy, and this consumption is constantly superimposed." Felix explained, "You just stayed in the Thinking Cabin for seven hours, but the degree of fatigue you feel may be more than fourteen hours."

Then Felix looked at her thoughtfully, "It seems that you have to shorten your time in the Thinking Cabin in the future. I think three to five hours, twice a week, this frequency should be more appropriate."

Hearing that the professor wanted to shorten her study time, Hermione habitually refuted, but the experience just now made her feel scared, and she approved Felix's arrangement.

Her attention quickly shifted to the magic just now. She asked curiously: "Professor, how did you come up with this magic? It's amazing. I think the Ministry of Magic should award you an Order of Merlin!"

Felix shook his head and whispered: "This magic is still very imperfect. I originally thought that it would give me a few hours or even dozens of hours out of thin air, but I encountered too many troubles in practice."

"The essence of this memory magic is to make your thinking speed faster. At present, it is about-" He glanced at the clock, "about three times."

Hermione also turned her head and stared at the clock with a complicated expression: "I stayed in the thinking room for seven hours, and only two hours passed in the outside world. This is simply a miracle!"

If other people also learn this magic, how much time should they have to study!

However, there should be very few people who can withstand the side effects of magic.

And it must be assisted by Professor Hepp...

It seems that I am the lucky one, Hermione thought happily.

Felix continued to explain: "The thinking room is not the real world. In essence, everything in it is made up of your cognition. Do you realize its problem?" Felix asked.

Hermione thought for a moment, "It reflects our own cognition of the outside world, which means - it means that we can't get the correct feedback! No, I can obviously practice magic in it."

The little witch's idea is that the basis of the existence of the "Thinking House" is the wizard's cognition of the outside world, so he can't "construct" something he doesn't know, such as - using the Thinking House to brew potions and practice magic, and of course, he can't master magic.

But this is contrary to her experience.

Felix watched the little witch desperately thinking and trying to think with interest - Professor McGonagall's evaluation of Miss Granger was very appropriate.

"That child is very eager for knowledge, and she can always master the knowledge in the book faster than others. Of course, her talent may not be as good as yours, but I think you are an exception..."

He is indeed an exception, after all, he has a special advantage in practicing spells. His impression of this witch is constantly changing, from a familiar stranger, to a recommended assistant candidate, and then to a hard-working academic master.

As expected of one of the three protagonists of the original plot, this potential is unmatched by few people.

What kind of talents do the other two have? Felix was thinking.

The clock was ticking.

"Is it because of your existence, Professor?" Hermione's eyes lit up.

Felix showed an approving look and revealed the answer, "I am the one who uses magic, so the Mind Cabin is built based on my cognition, at least most of it. And this means-" "

It means that your cognition of ancient magic covers my cognition!"

Hermione suddenly realized, "Your understanding of ancient magic far exceeds mine, so I can practice ancient magic in your cognition."

In short, Felix is ​​the creator of the "Mind Cabin" and Hermione is his guest.

Hermione continued to deduce along this clue, "Then the effect of this magic on the professor..." It seems not great.

Felix shrugged, "It is more or less useful. Here are all the books I have read before, which allows me to quickly review the knowledge I have learned. Or, when I want to think for a while without being disturbed, it is also very convenient."

In fact, Felix originally developed it as a kind of combat magic-to gain super dynamic vision and reaction ability.

With his level 6 Apparition and fainting skills, he was so fast.

He had this idea in his fifth year, but he had no idea until he graduated.

He had no choice but to carry a tube of potion with him to improve his reaction speed by "taking medicine".

It was not until he read a lot of research papers on the brain and thinking in the Muggle world that he gained something, but it was a pity that this gain was used in teaching. There is still

a long way to go.

Putting these ideas aside, Felix advised her, "The mind hut is still different from the real world. You must practice constantly in the next week to turn the illusion into real reality."

Hermione's current state is like she just played a VR game and learned the skill of "cooking" in the game. If she starts to learn cooking after returning to reality, it will be like turning on a ten-fold experience cheat, but if she doesn't make any extra efforts, this somewhat "virtual" experience will quickly pass.

It won't work today, she is too tired.

"Professor..." Hermione bit her lip in confusion, as if she had something to say.

"What?"

"Nothing." Hermione said quickly.

On her way here today, she saw Malfoy leaving Professor Heppe's office. Could it be that Malfoy also received the professor's help and was training in the Thinking Hut? She wanted to ask the professor, but she couldn't find a suitable excuse.

Maybe Ron would know?

Ever since the "Slug" incident, Ron has paid special attention to Malfoy, especially the news of his bad luck. After

resting for more than ten minutes, Hermione still looked a little sick, but it was not a big problem. She just needed to go back and have a good sleep.

...

In the evening, in the common room.

Hermione asked Ron this question, but she didn't expect that he actually knew it.

Ron grinned happily, "He was put in detention by Professor Heppe. It's been the third day... It is said that Professor Heppe thinks he doesn't respect his classmates, so he punished him to copy books."

"Copied books?" Harry asked curiously. He was very happy that his old rival was in trouble and couldn't wait to know more details.

"Yes, completely hand-copied. I overheard him complaining about this to Crabbe and Goyle. They were two big books, at least three inches thick when stacked together. He had to spend a month on them."

"What books?"

"I glanced at them at the time, but couldn't see clearly. They seemed to be Muggles or something." Ron frowned and thought for a while, "Oh, right! I remember that Malfoy complained that Professor Happ's books were not selling well and could only be used as a tool to punish students."

"It's "How Muggles Think" and "The History of the Muggle Struggle: A Million Years Ago"? " Hermione said the two titles in one breath.

Ron touched his head, "It seems to be... but how do you know?"

Hermione didn't answer, but ran back to the dormitory, and soon, she brought back two books.

It is indeed a big book... Harry thought. Looking at the spine of the book, it was exactly the two names Hermione said.

Ron opened his mouth wide, "Hermione, don't tell me that you only read this for fun."

"You have any objection?" Hermione frowned forcefully.

Harry took a book and flipped it open from the middle. There were long paragraphs of text inside, which made him dizzy. "Hermione, do you still need to read this kind of book? I mean, we have lived in a Muggle family since we were young."

Hermione looked very happy, "It is still very interesting to see the Muggle world from the perspective of wizards. And the book written by Professor Happ is very good. The angle he discusses the problem is something I can't consider at all."

Then she added bitterly, "Malfoy is really lucky. If it weren't for Professor Happ, he would never have read such an excellent book in his life!"

Hermione praised Felix generously. The two boys looked at each other and exchanged opinions silently - Hermione's object of admiration would not shift from Lockhart to Professor Happ, right?