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"These girls nowadays, all they think about is unicorns..."

"If this goes on, it's not a good sign. As a little angel of justice, I should find a way to ring some warning bells."

Erina glanced meaningfully at the Hogwarts girls surrounding Luna, a profound and mysterious smile appearing on her face. This time, the close encounter was with a baby unicorn, but that doesn't mean every time after that will be the same.

Why couldn't these innocent Hogwarts children understand such an obvious truth?

Of course, popularizing magical creature knowledge was one aspect, but the most important purpose was to let those glamorous bitches who coveted and approached her wings know that casually chatting, petting, and feeding could trigger strange branching endings.

As for the next lucky little witch to have a "close encounter," it would naturally be a random selection from those older students who were always surrounding Luna, Hannah, and Hermione, chatting, feeding them, and trying to get close, smiling incredibly happily.

After silently taking out her notebook and putting those little witches who were inquiring about when the next opportunity to film magical creatures would be, Erina turned her gaze to the faculty seats at the very end of the Great Hall.

Although the past few days hadn't been particularly pleasant or peaceful for Professor McGonagall and Professor Flitwick, they couldn't help but reveal a gratifying and proud smile when they saw the articles they had revised and guided in print.

A thoughtful expression also appeared on the faces of Professor Sprout and Professor Snape beside them.

After reaching the level of a formal professor at Hogwarts, what needed to be pursued was not only the improvement of personal abilities, but also more attention to the cultivation of students and contributions to the educational aspects of their discipline.

Without a doubt, compared to the previous scattered, unsystematic, and large-scale casual submissions, the academic section now opened up in *The Quibbler* was a very suitable place for professors to publish their research results and guide students to publish excellent academic articles uniformly—not to mention that, through this window, they could also showcase the excellent teaching achievements of Hogwarts School of Witchcraft and Wizardry to the magical world.

Facts proved that the students of Hogwarts were not unintelligent, and the overall academic level had not declined at all.

It was just that they lacked a clear goal and systematic guidance and planning before, so they didn't seem so bright, so much so that the magical world had been questioning the teaching quality of Hogwarts in recent years.

Now, the magical research papers published by Percy and others, although they still seemed somewhat immature, were already enough to respond to all external doubts. Many professors had begun to think about what topics they should assign to students for the next issue.

Not only limited to writing papers, but also faculty members at the level of headmasters and deans, such as Professor Dumbledore, Professor McGonagall, and Professor Snape, considered aspects that were more extensive and comprehensive than pure "discipline leaders."

For example...

If you want to be selected as the male and female prefects of each house, then you must publish at least one basic magical research article in the *Into Magic* section.

If you want to be selected as the male and female student president of Hogwarts, then you must publish at least three magical papers in *Into Magic*, or equivalent, and have obtained at least one headline push position in the section.

If you want to obtain the qualification of an outstanding graduate after graduation and obtain a letter of recommendation from the school's professors, you also need to...

In short, after such a successful test run, the minds of many professors at Hogwarts became active, intending to take this opportunity to continue and spread this excellent method of learning and their own educational achievements.

The little wizards didn't have much interest in the professors' new ideas for the time being.

To be precise, even if they knew, most little wizards, except for a few students obsessed with prefect and student council president positions, wouldn't think that these things had much to do with them.

After breakfast, the students gradually began to explore Hogwarts Castle through the secret passages introduced by the Weasley twins, including the prohibited areas that Filch had previously warned about, and many bold little wizards were also wandering around there.

Fortunately, most little wizards only looked outside, not daring to actually go in, due to the "public execution" rights held by Filch—Argus Filch, the caretaker of the castle, could intuitively feel that since *The Quibbler* was published, the little wizards were much more well-behaved and orderly than before.

What made Erina even more satisfied was that, starting in the afternoon, people had gradually begun to notice the "Easter egg section" she had hidden in *The Quibbler*—Elementary Mathematics Basics Introduction and Fun Trivia Questions and Answers.

The familiar and simple explanation of the "chicken and rabbit in a cage" problem instantly brought back memories of those Eagle Ring questions this year.

Since the beginning of this semester, the ever-changing and bizarre "cage" questions of the bronze Eagle Ring had been a mountain blocking Ravenclaw students from returning to their dormitories to sleep. Many poor little eagles spent even more time sleeping in the corridors than sleeping in their beds.

As the house known for its wisdom in Hogwarts, all Ravenclaw students knew that the Eagle Ring's questions were actually an infinite variation of arithmetic problems, because Hogwarts still had Arithmetic Divination and Astronomy classes.

However, knowing what it is and what category it belongs to doesn't mean you know the solution behind each question.

Especially Erina's in-depth and easy-to-understand, step-by-step foundation consolidation of mathematics, which could be said to have never existed in the magical world before, and was even rare in primary and secondary school education in Europe at this time.

Considering that many wizarding families' children in the magical world don't have the elementary school education stage, let alone some more skill-requiring problem-solving methods, even some basic arithmetic operations may have certain problems.

Therefore, Erina specifically spent half a page of space in this issue of *The Quibbler - Mathematics Section* to move an entire multiplication table to the top. As for the fun trivia section, it was naturally the well-loved chicken and rabbit in a cage problem.

For a time, this set of content, which seemed dizzying and boring to other houses and wizards, became the most concerning thing for every Ravenclaw student—in the face of the temptation to go home, unicorns, secret passages, and delicacies were all secondary. They had almost forgotten what a soft dormitory bed looked like.

The Ravenclaw table that night was undoubtedly the happiest place in Hogwarts. Every little wizard's face was filled with pure pride and smiles. Everyone enjoyed the food easily, no longer having to think about how to get in tonight.

In addition, that multiplication table full of mysterious beauty and mathematical rhythm also became the most discussed thing among Ravenclaw students—almost everyone lowered their heads and muttered a few sentences from time to time, carefully feeling the essential leap in calculation speed brought about by algorithm optimization.

However, this made the other three houses a little confused.

Due to the difference in interests and house atmosphere, few children from other houses besides Ravenclaw could understand the fun of that maze of numbers that looked like a heavenly book.

You know, before this, although the little Ravenclaws would occasionally come up with some difficult and philosophical words, they still sounded like "human words" that could be understood, but in less than half a day, the entire house had turned into a sea of mathematical enlightenment.

Getting a little closer, you could hear little wizards muttering sentences like spells in low voices from time to time.

"One times one is one, one times two is two..."

"Two times three is six, two times four is eight..."

It's not that Erina cast any magic on the magazine.

The main reason was that the calculation methods commonly used in the magical world, or rather in Europe, were too weird—normal addition and subtraction were fine, but when it came to multiplication and division, the whole style began to become cheerful.

Whether it was the duodecimal multiplication table originating from the United Kingdom or the decimal multiplication calculation method introduced from the East, it was usually the content that you would only come into contact with around the time of the A-level exams, and before that, there was a hurdle called the GCSE.

But even for the GCSE, you would need to be sixteen years old in the non-magical world.

For the children of the magical world, this time was actually equivalent to the age of Hogwarts sixth-year students, so you can imagine that even if they synchronously accessed the mathematics progress from the non-magical world, it wouldn't be very profound knowledge.

In fact, if Erina remembered correctly, even if they entered the GCSE stage, when facing "complex multiplication operations," that is, multiplication operations with more than two digits, British students, in addition to using calculators (obviously, Hogwarts does not support this form), still relied more on the legendary drawing line counting method.

What is the drawing line counting method?

For example, roughly, for example, 12x11, then British children would first draw a vertical line, representing 10, and then draw two vertical lines, representing 2. "12" is represented like this: (image.jpg)

Then draw two horizontal lines to represent "11": (image2.jpg)

Then start to find the intersections of these lines, and count the dots from the lower right corner to the lower left corner. The units are ones, tens, hundreds, thousands, and tens of thousands: (image3.jpg)

When counting the dots, if there are more than 10, just carry one over and mark it next to it.

So, 12x11=132. (image4.jpg)

In fact, this algorithm, which is called "linear algebra (pseudo)", although it looks a bit cheerful at first glance, only requires you to count the dots for British children who hate rote memorization, and you don't need to memorize any complicated and difficult multiplication tables.

In fact, in the original book, when Harry, Ron, and others were doing astronomy homework to calculate star trajectories, the horizontal and vertical intersecting lines spread out on the parchment on the table were doing multiplication drafts.

However, the only small problem with this method is that as the numbers increase or odd numbers frequently appear in the lower half, just counting the dots can make people feel like they are dying—for example, when a situation like 998 multiplied by 777 appears...

Perhaps in the eyes of the Gryffindor lions, the cheerful drawing line counting is still the most comfortable way to calculate.

However, for Ravenclaw students who have a higher pursuit of wisdom and skills, knowledge similar to this that masters the algorithm key, can solve more tedious problems, and find the correct answer faster, is undoubtedly the most fascinating existence.

At least the most obvious change is that as long as they master this from now on, whether it is Arithmetic Divination or Astronomy class, they Ravenclaws will leave the students of the other three houses far behind—both in calculation speed and calculation accuracy.

In this way, in a cheerful and pleasant atmosphere, the little Ravenclaw wizards talked in low voices, while muttering the "multiplication table", while leaving the Hogwarts Great Hall with brisk steps, each with a glimmer of imagination for a better future in their eyes.

Very good, it seems that the little Ravenclaw eagles have initially tasted a little sweetness.

Erina glanced at the Ravenclaw students who were immersed in the charm of mathematics, and the corners of her mouth turned up slightly with pleasure.

In the following time, she would also secretly ask the house-elves to update some question banks next to the Ravenclaw Eagle Ring, but the overall difficulty was fixed at being able to be solved by the multiplication table, some more basic math trivia questions.

Just like fishing by the lake, if it is too rough at the beginning, it is easy to scare away these timid children.

Only by first throwing in some bait, letting them taste some sweetness, and filling them with confidence in themselves, is the time to truly open the door to the hall of mathematics for them.

Of course, for Erina, these are just issues that need to be slowly polished and thought about in the subsequent impact of the magazine, and she is not in a hurry to arrange everything properly in a short period of time.

After being busy for a whole week, she just wanted to eat and drink well at this time, and be an idle little witch.

That night, a small-scale celebration party was held in the Hogwarts kitchen.

In addition to Erina and her little wings, the Weasley boys who provided the manuscripts, the academic masters of each house, and even the castle caretaker Argus Filch were also invited.

While celebrating the successful publication of *The Quibbler*, Erina also paid the royalties for this week on the spot.

Along with the aroma of grilled meat, the fragrance of butterbeer, and the pleasant sound of Galleons jingling, even Argus Filch, who always had a stern face, rarely showed a smile.

After serving as the caretaker at Hogwarts School of Witchcraft and Wizardry for so many years, he had never been so concerned by the magical world.

More importantly, Erina Kaslana was really too generous. With so much extra income, he could finally consider re-equipping Mrs. Norris with a whole new set of cat toys, litter boxes, and cat beds.

Of course, another reason was that the kebabs grilled by Erina herself were too fragrant—most people are in a better mood when facing delicious food.

Argus Filch, as an adult, was still like this, let alone those little wizards who hadn't graduated. Everyone was so excited that even the always steady Percy Weasley couldn't help but show off his singing voice in the kitchen open space, while the George and Fred brothers held hands and performed a tap dance...

Facing the rare lively and cheerful scene in the kitchen, Erina, who was shouldering the heavy responsibility of grilling meat, narrowed her eyes quite happily, while turning the grilled meat in her hand, and humming the melody of a song that no one had ever heard.

Not far away, under Hannah's guidance, Hermione echoed the scattered beats that Argus Filch was hitting with his hands, clumsily turning around, while avoiding hitting the Weasley twin brothers next to her, and carefully dancing the jazz dance she had just learned with a nervous face.

In the lively kitchen, a flash of white light flashed from time to time, which was Luna holding her beloved camera and capturing precious moments that she thought were worth preserving...

Amidst the laughter and the aroma of grilled meat, the first day of *The Quibbler*'s release came to a perfect end.
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Goo~ Chapter 1~ Asking for chapter reviews!
Today is still a 4,000-word chapter ⊙?⊙! Oh
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