Harry Potter: This senior is pretty strong

On Halloween Eve, Qin Yu arrived at the auditorium early in the morning, drawn by the aroma of roasted pumpkin.

Not long after they sat down, a flock of owls swarmed in, dropping letters and packages next to the recipients, making the entire auditorium noisy.

Clearly, the postman was exceptionally busy today.

Qin Yu also received a package about the size of a backpack, which was wrapped very tightly.

Unsurprisingly, he saw Hermione's handwriting on the package.

Then, after opening the package, he saw a red sweater and a pair of brown woolen gloves.

After reading the letter Hermione had attached, he learned that Mrs. Granger had bought the sweater and Hermione had knitted the gloves herself.

—Because he said that the representative color of Gryffindor is red, and Hermione's hair is brown, so he chose these two colors.

"Tsk, red sweater..." Qin Yu didn't know what to say for a moment.

Such an eye-catching color! It's a good thing he's still a "child"; if it were in his previous life, he wouldn't dare wear it out.

As for the gloves, even though they're a little ugly, they're still very warm to wear, and I can wear them when winter comes.

Hermione also mentioned in her letter the preparations they were making for Halloween, and that she was making two beautiful jack-o'-lanterns, which made Qin Yu feel the festive atmosphere as well.

……

Because of the holiday, the students were somewhat distracted in class throughout the day, thinking about the banquet that evening.

So much so that during Potions class, someone got the amount of milk thistle powder wrong and added a large spoonful, which filled the entire basement with a strange smell. After reprimanding the careless student, Professor Snape skillfully used a spell to remove the smell from the entire space. After a brief period of stuffiness, everyone was able to breathe fresh air again.

Finally, the last class of the afternoon ended, and everyone excitedly went up to the ground to head to the auditorium for the Halloween Eve dinner.

The auditorium was decorated with a dazzling array of Halloween ornaments, and the ceiling above the auditorium was a magically changing starry sky with thousands of bats flying in the air, perfectly creating a Halloween atmosphere.

As for the food, it was certainly plentiful, with tempting delicacies filling the four long tables and the teachers' tables.

After watching this grand and lively scene for a while, Qin Yu suddenly sighed.

"What's wrong, Qin?" Elvis noticed Qin Yu's sigh quite keenly.

"I was thinking, it would be great if I could take a picture and post it on WeChat Moments," Qin Yu said with a shrug.

Imagine posting something on your WeChat Moments and receiving a notification that "You have received a comment from your friend Hermione and a like from Professor Dumbledore." Hmm, that would be quite interesting.

"Moments? What's that?"

The one who asked this question was George, who was sitting next to him, and Fred also cast a curious glance at him.

"Well... well, how should I put it..." Qin Yu paused, thinking about how to describe it. After all, these young wizards had limited knowledge of the Muggle world, let alone things from the "future".

Then, he noticed that Percy was looking at a copy of the Daily Prophet, and his eyes lit up. He explained to the group of curious children, "Your WeChat Moments is like creating your own Daily Prophet. You then post pictures and text on it, like today's Halloween Eve dinner. And your friends can see this newspaper through—well, FiloNet—and they can even leave comments and messages."

The Floo Network is one of the most important teleportation channels in the magical world. Many wizarding homes have their fireplaces connected to the Floo Network. To use it, simply sprinkle a spoonful of Floo Powder worth 2 Sickles, shout out your destination, and you will be teleported there after a puff of green smoke.

Furthermore, FlooNet can also transmit parts of the body. For example, you can transmit your face to another fireplace so you can talk to the person on the other side. Of course, this operation is risky and can easily scare others, so it is generally rare for people to do this.

Qin Yu used the Daily Prophet and FlooNet, which George and Fred were familiar with, as analogies to explain things. Although they still didn't fully understand, they were able to get a general idea.

Moreover, George and Fred keenly sensed that there was great potential here.

So they kept pestering Qin Yu to explain in detail.

Unable to resist the Gemini's thirst for knowledge, Qin Yu could only vaguely explain what he knew about social circles from his previous life, combining it with the situation in the magical world.

The Weasley brothers' eyes lit up even more upon hearing this.

Qin Yu had mentioned similar topics before, but hadn't gone into much detail. Now, after Qin Yu's explanation, the two brothers seemed to have a new door opened for them.

“The magical world will be changed because of this!” George said excitedly.

“And we will be the ones to change the entire magical world!” Fred’s voice trembled slightly.

"Ahem, I admire your drive!" Qin Yu said with a light cough.

What else could he say besides encouragement?

Upon hearing this, the two brothers immediately felt energized and huddled together to discuss it.

One consequence of this was that Percy Weasley (George and Fred's third brother), who originally aspired to work in a powerful department of the Ministry of Magic, was persuaded (or rather, coaxed) by his two younger brothers to go to the Floo Networks Administration, a subordinate department of the Ministry of Magic. Of course, this would have to wait until Percy graduated, and at this time he was only a fourth-year student and had not even become a prefect.

……

After Halloween, the weather turned very cold, and the distant mountains around Hogwarts were covered with a layer of snow and ice, while the Black Lake was frozen solid with cold, hard ice.

Under the patient guidance of the two professors, Qin Yu finally mastered the use of the incantations in the pyramids, and learned that these incantations were similar to a language, and could achieve various effects through different arrangements and combinations.

As a reward for Qin Yu's learning achievements, Professor Swinton gave him a piece of alchemy material.

This is what they had left over from making that large pyramid, about a third of the original, which is quite a lot, because the materials used to make the pyramids were pressed very thinly, thus saving some material.

When Qin Yu received this alchemical material, he was overjoyed. This thing was worth a lot of money, and it was not necessarily something that could be bought on the market even with money. According to Professor Swinton, even he could only refine a little more alchemical material of this quality, because Lord Nicolas Flamel did not have many catalysts left.

With alchemical materials and incantations in hand, Qin Yu naturally wanted to tinker with something, but it certainly wasn't a refrigerator.

So he set his sights on the "flying sword" he had always wanted.

Of course, it was difficult. Apart from hammering the alchemical materials into a one-meter-long sword, he didn't make any major breakthroughs—the sword couldn't fly, wasn't very powerful, and wasn't even as good as a Quidditch bat.

He hasn't had much energy to study this lately, because his first official Quidditch match is about to begin.