The sickly, iron-fisted beauty in Harry Potter

But since it involved his sister, and he was also acquainted with Cho Chang, Harry still inadvertently fell into the trap.

"Your sister said that if I win this competition, she will grant me one request."

"And I want to say to her..."

Qiu Zhang spoke more and more slowly, and even lowered his head shyly.

Just as Harry was feeling somewhat bewildered, Cho Chang suddenly sprang up and charged towards Harry from behind.

A buzzing sound rang out, and Harry was suddenly startled, realizing that the Golden Snitch was not far behind him.

He quickly twisted his body to draw a semicircle, trying to keep up with Qiu Zhang's rhythm, but Qiu Zhang had already quietly turned around while he was talking.

In this way, Cho Chang gained herself a mere half-second, and that half-second determined that Harry would always remain more than ten meters behind her and would never be able to close the gap.

After all, the Nimbus 2001 is slightly better than the Seven Stars in terms of performance.

Cho Chang amplified his advantage once again. Even with countless skills, Harry could only suffer from Cho Chang's broom exhaust fumes at a distance of more than ten meters.

In the end, Qiu Zhang did not let the Golden Thief escape and captured him.

The score remained at 210-80, and Gryffindor scored another 20 points in that short period.

However, the outcome was ultimately decided by the Golden Snitch's 150-point difference, and Qiu Zhang had the last laugh.

This makes the situation in Quidditch matches clearer.

Hufflepuff has lost all three games and has completely lost any chance of winning.

Ravenclaw won two out of three matches, defeating Hufflepuff and Gryffindor.

Gryffindor won two out of three matches, defeating Hufflepuff and Slytherin.

Slytherin won two out of three matches, defeating Hufflepuff and Ravenclaw.

Now the three teams are evenly matched, and it's impossible to determine who is number one.

According to the rules, the three teams will play each other in the next round, which means Harry still has a chance to turn things around.

So while Ravenclaw was celebrating wildly, Harry didn't feel too frustrated; at least, the loss itself wasn't too bad for him.

What hurt Harry the most was that he felt like he had gotten to know Cho Chang all over again.

In his memory, Qiu Zhang was clearly the gentlest, kindest, and most intelligent older sister, but now even this older sister has come to deceive him.

Sure enough, after spending a lot of time with their sister, both Cho Chang and Hermione picked up some of Dolly's habits.

Well, Harry only dared to think that way secretly.

If he dared to say such things and Dolly found out, he would surely be met with Dolly's gentle guidance.

However, Dolly didn't have much time for the sibling-like physical exchanges with Harry.

After a period of hard work, she finally learned how to brew the Bone-Regenerating Essence.

Meanwhile, the purchased equipment is finally ready, and we are about to start testing whether it can function properly.

For this reason, Dolly invited Hermione and Cho Chang over as well, but she still concealed the fact that she was brewing Bone Regenerating Elixir, and instead pretended to be brewing Blood Tonic.

Hermione and Cho Chang were already used to Dolly taking iron supplements.

Although she would still worry about Dolly's health, she would no longer be frightened.

"Alright, the three of us are all from Muggle families, so I won't explain any further."

Dolly clapped her hands and excitedly pulled the start switch.

Immediately, the generator began to spin wildly, burning the diesel fuel that had been prepared beforehand, converting the energy from the combustion into the kinetic energy of the flywheel rotation, and finally inputting it into the generator to start generating electricity.

The scientific principles behind it were already understood by Muggle scientists decades ago, but the three girls were still on tenterhooks.

It was as if we were about to witness a miracle, the miracle of lighting up the magical world for the first time.

Well, that's not entirely accurate either.

After all, wizards have other ways to make light bulbs glow, but using a small generator to generate electricity and then turn on the lights is absolutely unprecedented at Hogwarts.

After the light bulb flickered a few times, it lit up amidst the anticipation of the three girls.

The bright lights instantly transformed the Room of Requirement, which had been shrouded in the glow of oil lamps, into a brightly lit space.

The three girls, who were used to the light of the oil lamp, even found it a bit dazzling.

However, they quickly got used to it and gathered in front of the dashboard, checking all the data with Dolly.

Finally, it was determined that, at least in terms of power generation, there were no abnormalities in either the voltage or the output current.

The three girls hugged each other excitedly, as if they already had hope of evolving from the Middle Ages to modern society.

The daytime study time was fine, and the conditions at Hogwarts weren't bad either.

But even for Hermione, the boring relaxation time at night was too monotonous and dull at Hogwarts.

Now that we have electricity, the three of us can do many things and use many electrical appliances to improve our lives.

"Don't be happy too soon."

Dolly reluctantly released Cho Chang and Hermione's waists at the same time, pouring cold water on the two girls.

Although the legendary electromagnetic shielding has not yet appeared, Dolly believes that such a legend is probably not unfounded.

So Dory, Cho Chang, and Hermione then began to test whether the electrical appliances they brought could be used.

The three of them quickly came to an answer.

All simple electrical appliances that do not require the transmission of electronic signals, such as hair dryers or electric kettles, can be used normally.

But any device that involves the transmission of electronic signals, such as game consoles, televisions, and radios, all become ineffective and start making a constant hissing sound.

This is a less than satisfactory result.

What's gratifying is that Dolly's efforts over the past month have indeed paid off, but what's frustrating is that the entertainment device that the magic spell could never replace is the one that's most unusable.

The three of them sat on the floor in silence for a long time, watching the static on the television screen.

In the end, Cho Chang hugged Dolly's arm and said, "Actually, it's not bad. At least we can enjoy half of modern life, right?"

Just as Dolly was about to nod, Hermione spoke up, "I think there might be a way to resolve this."

Cho Chang and Dolly looked at Hermione with surprise. Hermione said, "Right now, we suspect that some kind of unseen interference is preventing the electronic devices from functioning properly, right?"

"Then why don't we find a way to block out this interference, or temporarily drive away the source of this interference?"

Qiu Zhang blurted out instinctively, "But we don't even know what it is..."

"That's exactly the kind of area we should try and study, and it's precisely an area that no one before us has ever studied."

Hermione laughed happily and said, "Absolutely! I don't believe any wizards have researched these things, because they probably haven't even seen a television set much."

Qiu Zhang couldn't refute this, so he could only nod.

But is studying this kind of thing beyond their scope?

Dolly looked at Hermione with interest and said, "Do you have any clues, or are you planning to help me?"

Hermione's smile vanished instantly, because she was unlikely to have much time to help Dolly with this; she still needed to review for her final exams for the second time.

So Hermione hesitated for a few seconds and said, "I can spend an hour each day helping you with your research and offering suggestions, but you'll have to do most of the work yourself."

Hermione was worried that Dolly would be disappointed, but she received a warm hug and sincere thanks from Dolly instead.

This made Hermione a little regretful, wondering if she should have spent more time with Dolly.

Studying is important, but Dolly is just as important!

However, Hermione ultimately couldn't resist the temptation of getting first place in the exam and temporarily put Dolly and her affairs second.

"Do you have any ideas now, Hermione? Cho Chang, you can also use your brain, after all, you're a year older than us."

Dolly continued to chair the meeting; she was genuinely interested in resolving this matter.

Although it started out for entertainment, Dolly now feels that if she could really achieve electrical freedom at Hogwarts, despite the changed circumstances.

That would provide many more practical ways to protect yourself and your friends, and even to bring this place under your control.

For example, installing some cameras—we already have mature closed-circuit monitoring systems in this era, but they still seem a bit cumbersome compared to the networked monitoring systems of the future.

As long as it works, Dolly isn't picky.

Hermione thought for a moment and said, "According to our conclusions, this interference is like an electromagnetic wave—you should be able to understand electromagnetic waves, right?"

Seeing that Dolly and Cho Chang both nodded, Hermione continued, "Although in the magical world, it's unlikely that electromagnetic waves would interfere with our use of electrical appliances, it should be something similar, like what we'll call magic waves for now."

"It has similar characteristics to electromagnetic waves; it is invisible and intangible, yet it truly exists around us."

"It has no effect on our bodies, but it may affect our spellcasting."

"Of course, these are just guesses. Now I'll get to the point."

Hermione simply took out paper and pen and started scribbling: "Where we are, we have a way to shield electromagnetic waves. Could there be a similar way in the magical world?"

"Dolly, your silver shield can resist magic. Perhaps if more of the same material were made into protective shells, the appliances could work properly?"

"Of course I know that's not very realistic, after all, your silverware is too valuable, but perhaps we can try other materials, such as..."

Hermione was deep in thought when Cho Chang spoke up, "Like dragon skin?"

Dolly and Hermione looked at Cho Chang in surprise, wondering why she would think that.

Qiu Zhang smiled slightly and said, "Isn't the most common way for wizards to block magic dragon skin? Dragon skin gloves, even dragon skin clothes, and dragon skin earmuffs."

“We’ve used it in Potions and Herbalism classes.”

Dolly and Hermione immediately nodded, agreeing that it made sense.

But then a problem arose: where were they going to get dragon skins?

Dragon skin is a rarer resource than most medicinal herbs.

Seeing that Hermione and Cho Chang remained silent, Dolly said, "I heard Harry say that someone in the Ron family seems to be raising dragons?"

116. Enhanced Potions: A New Approach!

Hermione and Cho Chang exchanged bewildered glances; they were clearly unaware of this information.