Walking down the Eiffel Tower, strolling along the Seine River, and visiting the Louvre. Lin Yue followed Hermione and the Granger couple as they toured the famous sights of Paris. She saw the polluted river and the artifacts plundered from around the world. She witnessed real human nature that was never mentioned in books.

"Hermione," as they exited the Louvre, thinking about the Seine River she saw yesterday, Lin Yue said in a flat voice, "I just did some calculations."

Hermione, holding her hand, turned her head and looked at her with curiosity, "What did you calculate?"

"I calculated whether the Earth could develop more stably and sustainably if there were no humans."

Lin Yue turned her head to look at Hermione, her eyes showing a detachment and coldness akin to that of an inorganic substance.

"The result is feasible. Without humanity, the total resource consumption of the Earth will decrease, and the damage to the Earth caused by conflicts, the greenhouse effect, and other human influences will also diminish."

Stopping in her tracks, Hermione reached out to cup Lin Yue's face. "So what?"

Lin Yue blinked her vacant eyes. "So the best conclusion is that humanity disappears."

"If humanity disappears, the future of resource depletion will naturally vanish, and the damage to the Earth will be significantly reduced."

"This world will no longer have to endure everything that my original world experienced."

Taking a deep breath, Hermione suddenly felt as if a heavy burden was resting on her shoulders.

The words she was about to say could very well be ones that would determine the future and the direction of humanity.

"Lin Yue, you have suffered a lot before."

Gently stroking Lin Yue's cheek with her fingers, Hermione gazed at her with deep affection.

"Although you haven't developed strong emotions yet, I know that you will come to feel disgust towards humanity, and you will be filled with resentment towards all of it."

Pointing towards the Louvre, Hermione directly indicated the greed inherent in human nature.

"Your thoughts are somewhat logical, and no one has the right to blame you for them, not even me. But you might want to think about it."

Hermione smiled and pointed to herself, "Me, Mom and Dad, Harry, Ron, everyone from Ravenclaw, we are also human beings, living in this world."

"But we don't look like those people, do we?"

Lin Yue mechanically nodded. Indeed, according to calculations, if the vast majority of people could think and act like Hermione and the others, the future of Earth with humans would be better than without them.

"But that's not enough to affect the calculation results. The facts won't lead to that outcome; the unknown variable in the equation will push all results back to the starting point."

"It won't! I promise it won't!"

Hermione closed her eyes and hugged Lin Yue, "Give me some time, okay? Give me some time, and I will work hard to make the world a better place."

"Give me time, give yourself time, and give humanity a little time."

"Don't deny everything from the start, just like you shouldn't easily deny yourself."

"Sometimes calculations can't derive all the results."

Hugged by Hermione, Lin Yue felt the boiling sensation in her mind, which she had experienced since arriving in France, gradually calm down.

She didn't know why her thoughts were heading in these directions; she hadn't even actively tried to think about those questions. But her mind, which seemed to be boiling, was calculating on its own. One equation after another, one result after another, kept emerging, each one making her mind boil a little more. This deepened a voice in her mind that urged her to destroy everything, to end it all before anything happened.

She vaguely sensed that something was off with her state of mind, and with absolute rationality, she suppressed the boiling in her mind and conveyed her thoughts to Hermione. Sure enough, after Hermione spoke to her, that boiling sensation in her brain subsided.

She returned to her usual indifferent and calm demeanor and boarded the flight back to her country with Hermione. Sitting on the plane, Hermione looked at Lin Yue, who had her eyes closed, and guessed that she was probably reciting the contents of that book in her mind.

To be honest, Lin Yue's words after leaving the Louvre yesterday had really shocked her. Clearly, she was such a gentle and friendly person at her core, yet she had said such things. Hermione knew this was a sign that Lin Yue's emotions were awakening, and she began to feel hatred. Hatred for the things she had experienced, hatred for the human malice that had caused her to go through all of this.

Her gentle nature made her worry about the future of this world; she didn't want everything she had experienced to repeat in the future of this world. Her meticulous calculations made her realize that no matter what kind of research she conducted, even if resources were no longer an issue, it wouldn't prevent such a future. Hatred, worry, and powerlessness piled up, leading her to the final conclusion: to end everything before it even began.

This book's true home is on another platform. Check it out there for the real experience.

But fortunately... this kid's nature was genuinely kind. Just comforting her a little and giving her a promise stabilized her. Otherwise, Hermione really couldn't imagine what kind of upheaval Lin Yue could cause in this world once her magic became stronger and she reached adulthood.

Also breathing a sigh of relief alongside Hermione was an invisible presence far in the sky. Indeed, this child had a strong stress response. Years of harm and oppression had caused her to react so violently as soon as she began to recover her emotions. This was only from witnessing environmental pollution and the cultural plunder of the Louvre. If she saw more...

The invisible presence silently released a wave of energy, slowly repairing the cracks beneath Paris. Others didn't know, but it was aware that if it weren't for Lin Yue's nature still being intact and her timely words to Hermione, Paris would have already turned upside down yesterday, crashing down from the sky.

Looking at Hermione, the invisible presence clasped its hands together, relying on you, Hermione Granger. You must stabilize and heal her. What you are facing now could very well be the fate of two worlds.

Back in the UK, Lin Yue and Hermione immediately received a letter from Harry.

As soon as Hermione set down her suitcase, she picked up the letter that had been thrown on the desk.

Seeing her reading the letter, Lin Yue quietly tiptoed to quickly organize her suitcase and sort out the things that needed to be washed.

After arranging the items that needed to be placed in the room, she was just about to wipe the table and mop the floor when she heard Hermione exclaim in frustration and anger, "Harry Potter! Getting into trouble again... really."

Lin Yue walked over, blinked, and mechanically asked, "What happened to Harry?"

Hermione closed her eyes in despair, "Harry's letter says he inflated his aunt and is now at the Leaky Cauldron in Diagon Alley."

She handed the letter to Lin Yue, "It must be that aunt saying or doing something to Harry again."

"What a family, a whole family of nuisances."

Hermione tried to be civil in her wording, "But Harry was also impulsive; he might face consequences."

Her tone was filled with concern for her friend. Merlin knows, the Ministry of Magic has regulations that prohibit young wizards from using magic during the holidays.

Who knows what consequences Harry might face for using magic? Fortunately, from Harry's letter, it seems the Ministry doesn't intend to take any action against him.

Lyn quickly read through the letter and, considering Harry's personality and his actions towards his aunt, immediately made a deduction.

"Given Harry's character, if it were just an insult to himself, he wouldn't react this way."

"The most likely scenario is that his aunt made some inappropriate comments about his parents."

"Then she really deserves it." Hermione's expression instantly turned cold, and her earlier thought that Harry was a bit impulsive vanished.

If she really insulted his parents in front of Harry, then whatever Harry does to her would not be considered excessive.

"I'll write a letter back to Harry. How about we go to Diagon Alley tomorrow? We can buy some books."

Hermione picked up the other two envelopes on the desk and shook them; they were the new school yearbook lists sent to them by Hogwarts.

"Okay." Lin Yue replied flatly, watching Hermione write a letter back.

At the same time, she took the envelope with her name on it, opened it, and carefully examined the titles on the book list.

After Hermione finished writing the letter, she sent it to Harry using the owl she had rented before the holiday. Turning around, she saw Lin Yue reading the book list.

"How is it? There aren't any titles like Lockhart's books, right?"

"No," Lin Yue shook her head expressionlessly.

"That's good," Hermione let out a heavy sigh of relief and opened her own book list to examine it carefully. " The Monster Book of Monsters?"

"Is that for the Care of Magical Creatures class? That title is a bit strange."

Hermione scratched her head but soon stopped worrying about the oddly named book and picked up a pen to mark the books she needed on the list.

Lin Yue looked at the book list in her hand, guessing the content of the books based on their titles and the courses they belonged to.

At the end of the last semester, when choosing classes, she had originally wanted to select all of them, after all, one should give them all to learning and do their best; no knowledge should be abandoned.

However, her choice was jointly suppressed by her three senior sisters, Penelope, Cho Chang, and Marietta.

Ravenclaw had "produced" many top students over the years, and there had been quite a few who chose to take all the classes.

Therefore, they also knew that choosing to take all classes required a Time-Turner.

A powerful magical item that could manipulate time; it was useful but extremely dangerous.

It was clearly not worth risking one’s life to use a Time-Turner for just a few classes.

Moreover, there were elective courses that Lin Yue had no need to take at all.

Muggle Studies—wizards' understanding of Muggles was still stuck in the Middle Ages.

And Lin Yue, whether in the current world or the original world, had a lot of knowledge about Muggles, so there was no need for her to take this extremely outdated class.

Divination—this class relied heavily on talent, and Professor Trelawney, who taught it, also gave off a somewhat unreliable vibe, so it wasn't worth taking.

After a thorough analysis from the three senior sisters, along with Hermione's suggestion later on to take elective classes together with Lin Yue, she completely gave up on Muggle Studies and Divination, making her schedule look normal.

In this regard, both Hermione and the three senior sisters breathed a huge sigh of relief; none of them wanted Lin Yue to push herself too hard and clearly, using a Time-Turner to study, fell into the category of pushing too hard.

After resting for a night, when they arrived at Diagon Alley the next day, Hermione looked pale and took a while to recover with Lin Yue's support.

Lin Yue took out a can of cola from her bag and handed it to Hermione. "Drink this, it will help a lot."

"Thank you." Hermione patted her chest and took a big gulp of the cola.

After burping several times while covering her mouth, she finally managed to suppress the feeling of nausea.

Riding the Knight Bus... it was really uncomfortable; if it weren't faster than the subway, Hermione would have preferred to take the subway.

Once she felt a bit better, Lin Yue followed Hermione into the Leaky Cauldron.

Upon returning to the Leaky Cauldron, Lin Yue quickly scanned everything inside.

It was no different from the last time she came, and she quickly reached a conclusion.

"Hermione, Lin Yue, over here."

Harry swallowed the fried egg in his mouth and waved at the two girls.

"Good morning, Harry."

Lin Yue and Hermione walked over together and sat down, greeting him.

"Good morning," Harry said with a smile and nodded, "Have you had breakfast?"

"Yes, we have," Lin Yue replied in a deep, calm voice like a deep pool.

"Harry, why did you puff up your aunt?"

Hermione looked at Harry, hesitant for a moment, but ultimately asked the question. Harry didn't mind Hermione's question, but his face showed his dissatisfaction with the Dursleys. "She insulted my parents."

"Lin Yue was right," Hermione sighed,

"She really had it coming. Good job, Harry, and luckily you weren't punished."

"Yeah," Harry shrugged, "I'm just as puzzled as you are that I didn't receive any punishment. I thought there would at least be a warning or something. But what did you just say that Lin Yue guessed correctly?" "It's just that Lin Yue said, given your personality, it's unlikely you would do that just because your aunt insulted you, so the most likely reason is that she insulted your parents." Hermione briefly summarized Lin Yue's analysis.

Harry thought carefully about what it would be like if his aunt only insulted him...

He touched his nose and nodded, "Lin Yue is right. If she only insults me, I might just pretend I didn't hear it."

"Although I've mentioned it before," Harry looked at Lin Yue with admiration, "Lin Yue's analytical thinking skills are really impressive."

"Thank you for the compliment, but I still have a lot of shortcomings."

Lin Yue nodded without any change in her expression.

After finishing breakfast, Lin Yue and Hermione followed Harry into Diagon Alley.

As Harry led the two to the bookstore, he turned back to speak, "Ron also wrote to me yesterday. He'll be coming to Diagon Alley this afternoon."

"If you two aren't in a hurry to leave, you can see him this afternoon."

"Sure," Hermione nodded, "We don't have anything urgent."

"Alright." Harry made an 'OK' gesture.

However, following behind Hermione and Harry, Lin Yue's gaze kept drifting towards a dark corner not far behind them.

In that dark corner, there was a large black dog that had been following them since they entered Diagon Alley.

It had followed them all the way to the bookstore.