When he got home, Rhein hung a sign at the door saying that he was closed, and sat behind the counter.

He thought that Lucius, the sinister guy, was probably eyeing himself.

No, it should be said that the Embers family has always had a grudge against Lucius, and Lucius will come to settle accounts sooner or later, and today's meeting is just an introduction.

It's still a good thing to say, if you are caught off guard by this guy sneakily without vigilance, it will be a big trouble.

After all, Lucius had been beaten up by his own dad a few years ago—not long after Voldemort had disappeared.

Be careful in the future, otherwise you may not be yin by this guy at any time.

Death Eaters aren't a good thing, they're dark wizards of dark wizards, each with more bad water than the other.

Forget it, I don't want to think about this for the time being, so I'd better prepare Harry's teaching materials first.

Rhein took out the notebook, and then he realized that the notebook was different from the original.

It seems that during the argument with Lucius just now, Lucius gave him Ginny's old notebook.

The notebooks of the two are similar in appearance, so it's normal to take a string.

No, there are words on the cover of the notebook......

"Tom Marvolo Riddle ......"

Hiss...... This name is a little familiar!

Voldemort?

Rhine then remembered that it seemed that there was something like this at Hogwarts this year, and Lucius gave Voldemort's Horcrux diary to Ginny.

This prompted Ginny to be crippled by Voldemort, open the secret room, and release the basilisk.

Of course, Tom later changed his mind and wanted to take Ginny's life directly and resurrect it.

And now, this diary is in your own hands?

This is Lucius' first move? Want a lethal move?

But alas, this step will not die Rhine.

Rhine picked up the quill pen, dipped the tip of the pen in ink, and began to write in the notebook.

According to the basic part of the "theory of magical technology" in his mind, Rhine reproduced the beginning word for word and reproduced it in his diary.

As Rhine expected, the handwriting did not disappear immediately.

Rheinland continued to write.

Just as the first page was written, the notebook shuddered.

It's time.

Rhine flipped the page, and instead of repeating what he had just said, he skipped a paragraph and continued to write, until he was almost three thousand words.

The notebook shuddered again.

At the same time, all the handwriting on it was gone.

Then, a line of words, apparently written by someone else, emerges.

[Don't write, don't write, I always feel that something is not quite right in the middle, I have to digest it a little bit, and I'm going to go crazy if I write it again!] 】

Rhine curled the corners of his mouth, and sure enough, no one could resist the charm of magic technology.

It is worth mentioning that Tom Riddle's diary was originally empty.

The words written on it will also be erased by the soul of Voldemort hidden inside.

And Voldemort will also show what he wants to say on paper.

That's how Ginny was fooled.

However, Rhine felt that since he knew about its conspiracy, it probably couldn't hypnotize himself.

Therefore, when Rhine wrote the theory of magic technology on it, he skipped a large paragraph in the middle.

Give a beginning, give an end, and the process in between is brushed aside.

As for why this conclusion was reached, guess?

Sure enough, Tom Riddle inside, that is, Voldemort, couldn't hold back at all.

It is estimated that the more he thinks about it, the more his brain burns, and this new and mysterious field of knowledge almost makes his brain down.

Don't look at Rhine's learning is very easy, almost in less than half a minute, he finished the whole book.

That's because Rhine was forcibly imbued with knowledge by the tech tree and didn't need to think at all.

But if it were an ordinary wizard, it would be different, and the theory in it was even comparable to high mathematics.

Imagine a primary school student who has just finished elementary school math and a function problem pops in front of him.

In addition, this person is also conceited that he is a genius and very studious.

As a result, it will evolve into the current situation, and it will collapse directly.

Rhine lifted the pen, like an actor possessed, and wrote in his notebook: Who are you, why did the words I wrote disappear?

The line faded again, eventually disappearing into the paper, and Voldemort's handwriting emerged.

[I'm Tom, Tom Riddle, and I used to be a student at Hogwarts.] 】

Rhein wrote: Then why are you in a notepad?

[This is my diary, a record of a secret of Hogwarts.] Do you want to know? 】

Rheinland: No.

【？？？ 】

After more than ten seconds, it felt like Voldemort thought for a long time before the handwriting resurfaced.

[In fact, the secret room of Hogwarts is about to open, and Muggle-born wizards will be in danger at that time.] The Chamber of Secrets was opened many years ago, and I can show you there. 】

Rheinland: A known magic drive for a magic weapon, with a distance of 1 from the top of the conversion device. At the top, there are four spells, "Reinforcement", "Absorption" and "Compression", which form an isosceles triangle with a apex angle of 50°. According to the primary magic gun drive theory, ask: If the fourth spell is "Channel", where should it be inscribed?

Voldemort was quiet.

Rhein looked at the handwriting on the notebook, the question was actually very simple, but it didn't disappear for a long time.

Voldemort, who had just learned a little bit about it, was completely stumped.

The notebook began to tremble, and after a long while, it calmed down again.

The handwriting didn't disappear, but another line appeared underneath.

[I think about it first, I think I can solve this problem, all I lack is time, just time......]

Bang!

Tom Riddle's journal, closed by himself, lay there quietly, as if he didn't want to be disturbed.

Then you can think slowly, I'll see when you break the defense, and I want you to feel the fear of being dominated by the spell problem.

Rhine waved his wand, and a box suddenly floated into the back room.

This is the safe left behind by Daddy, which can only be opened with magic.

The box is heavy and very sturdy, so as long as you keep the diary inside, you are not afraid of being stolen.

"Click"

After placing the journal inside, Rhine magically locked the safe and returned it to the cabinet in the back room.

The notebook was gone, and more than two hours of time were wasted, and Rheinland had to buy it again.

This time, Rhine bought ten copies in one go, and deliberately chose ones that were different in appearance from Voldemort's diary, so as not to make a mistake when the time came.

It was already afternoon when he returned, and Rhine had been writing the textbook for Harry from scratch until the early hours of the morning, when he had finished the basics of the magic weapon.

On the cover of the diary, Rhine wrote a term: "Introduction to the Foundations of Magical Technology"

The name is quite stylish.

During this time, Voldemort's diary has been quiet and there has been no movement.

Rhine opened the safe, opened the diary, and couldn't help but raise an eyebrow.

I saw that in the diary, just below the question written by Rhine, there was already a bunch of inferences.

The sketches alone are several pages long.

The handwriting is dense, and if a person who is afraid of it reads it, it is estimated that it will also numb the scalp.

What Rhine didn't expect was that Voldemort remembered a lot of the theories he had written at the beginning.

And in a similar way, that knowledge is used in the process of derivation.

It's just that without the middle part of the textbook, it is difficult to come up with the correct results even if you are exhausted.

Rhine just flipped through it twice, and the diary closed with a "bang", trembling with anger.

It seemed to be Rhine's interruption, which almost interrupted his train of thought.

Rhine locked the diary back.

Do the questions well, and when you lose your effect, you won't have a chance to do them.

……

The next morning, just after Rhine had finished breakfast, Harry fell out of the fireplace.

The fireplace in the Enberth Wizardry was cleaned very clean, and there was no dust at all, so Harry didn't look dirty this time.

"Good morning, Harry. Have you had breakfast? If you haven't eaten it, maybe you can try my craft. ”

As soon as Rhine came out of the kitchen, he saw Harry and said hello with a smile.

"Thanks, Mr. Embers, but I had breakfast at Mr. Weasley's house."

Harry followed Rhein to the shop in front of him, and then took the notebook from Rhein with both hands.

"What you're going to learn this month, that's it. Of course, if you have enough talent and patience, you can learn it in a week. ”

Harry flipped through the textbook that Rhein had prepared, looked at it and was a little fascinated, and couldn't help muttering:

"It's amazing, it's so cool! I should have shown Hermione so she could know what I said was true. ”

After hearing this, Rhein raised an eyebrow at Harry:

"Of course, but I suggest you learn the basics of inscribed spells first, and then show her the knowledge. If Miss Granger would like to join my CCA, I would be more than welcome. ”

I have to say that the sound of Rhine's little abacus is almost resounding in the sky, clearly wanting Harry to hook up with the little genius.

Harry was overjoyed to hear Rhein say that, and he couldn't wait to return to the Weasley house and show Hermione his new knowledge.

"By the way, Mr. Embers, this is my tuition, and I brought it."

Harry said, taking a small bag from under his cloak and handing it to Rhine.

Rhine opened the seal and took a look, only to see a pile of golden coins lying quietly inside.

Knowledge is priceless, it's worth the price, and the extracurricular cram school in the previous life charged a lot more than that...... Rhine gave himself a psychological hint, and he was immediately relieved.

"Ding Ding ......"

Just then, the doorbell of the magic shop rang, and two people opened the wooden door and walked in.

One of them, a witch in a wizard's hat, looked very old, but had very bright eyes.

This witch, Rhine is very familiar.

She is none other than Minerva McGonagall, Deputy Headmaster of Hogwarts, Head of Gryffindor House, and Professor of Transfiguration.

Another middle-aged man also made Rhine a little familiar.

He also held a skinny cat in his arms, neatly dressed and clean, the only thing missing was that his head was a little bald.

When Rhine recognized this person's identity, he was a little surprised.

This man...... Is it really Filch?