The day after the end-of-year banquet, the young wizards of Hogwarts boarded the Express train home after breakfast.

Lin Yue dragged her large suitcase, her expression as indifferent as water, following Cho Chang, Marietta, and Penelope into an empty compartment.

As soon as they entered the compartment, the three older girls tacitly worked together to lift Lin Yue's luggage onto the luggage rack before starting to move their own.

Lin Yue was taken aback for a moment, then stepped forward to help Cho Chang and Marietta push their luggage onto the rack, one hand for each.

"Thank you, seniors."

"You're welcome." The three seniors simultaneously reached out, each giving Lin Yue's head a gentle rub.

Once seated, Lin Yue took out a notebook, a quill, and a bottle of ink from her wizarding robe, lowering her head to write furiously. She was almost done, just a little more to complete the last section.

When Hermione walked into the compartment, she saw Cho Chang and the other two quietly chatting together, and Lin Yue sitting across from them, head down, writing diligently with her hair tousled from the earlier rubs.

Seeing Lin Yue's messy hair, Hermione couldn't help but smile, glancing amusingly at Cho Chang and the others. She placed her luggage down and gently sat next to Lin Yue, not wanting to disturb her writing.

Until a commotion outside the train window caught her attention, Hermione leaned over Lin Yue to look out the window, unable to suppress a raised eyebrow.

She gently tapped Lin Yue's arm and softly said, "Lin Yue, look outside."

Hearing her full name, Lin Yue snapped out of her studying state, raised her head, and nodded at Hermione.

"Good morning, Hermione."

"Good morning, look over there." Hermione giggled, pointing at a scene outside the window, looking very pleased.

Lin Yue mechanically turned his head. Outside the car window, two black-clad Aurors were bringing someone down from the Hogwarts Express. The person being brought down was none other than this year's Defense Against the Dark Arts professor at Hogwarts, Gilderoy Lockhart.

At that moment, Lockhart was still trying to struggle, but he had long been immobilized by the Aurors' magic and could only keep talking in an attempt to persuade them to let him go.

"Let go of me, let go! Do you know who I am? I am Gilderoy Lockhart, you can't treat me like this."

"I am a celebrity, a celebrity! Do you know how much I have accomplished?"

"Shut up."

One of the Aurors waved his wand and directly sealed Lockhart's mouth, so now no matter how much he wanted to shout, he could only make muffled sounds.

"A celebrity, huh? Accomplished so much by taking credit for others' good deeds and then using the Memory charm on them. You won't be getting any flowers or applause waiting for you, Mr. Celebrity."

"Only Azkaban awaits you!" the other Auror shouted, as if he intended to make those two statements heard.

"Tsk tsk tsk, we knew he was a fool... but we really didn't know he was a criminal."

Marietta looked out the car window with a face full of disdain as she heard the Auror's words, and instantly, Lockhart seemed to lose all his spirit.

Cho Chang also looked at him coldly and said softly, "This does prove that he has two strengths."

Meeting the gazes of the other three girls, Cho Chang completed her thought. "The thickness of his skin, and the use of the Memory Charm."

Marietta, Penelope, and Hermione couldn't help but laugh out loud.

Lin Yue, however, expressionless, withdrew her gaze and continued to write in her notebook.

Lockhart was of no concern to her; based on her understanding of the Ministry of Magic's laws, the things Lockhart had done were enough to keep him in Azkaban for a lifetime.

Seeing Lin Yue bow her head and study seriously, the other four little witches sighed helplessly and instinctively lowered the volume of their conversation.

"The Auror who just shouted," Penelope pointed to one of the Aurors taking Lockhart away outside, "was a senior from Ravenclaw."

"He shouted that just now to let all the students know Lockhart's true colors, right?"

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Hermione glanced at the person Penelope was pointing at and then withdrew her gaze.

"It should be," Penelope nodded, "after all, it's very likely that there are still students who are fans of Lockhart."

"We need to make them see Lockhart's true colors."

Marietta snorted, "What’s there to admire about someone who can’t even teach a class properly?"

"If he had real skills to learn from, that would be fine, but unfortunately he doesn’t. We can’t just follow him to learn how to make up stories and use the Memory charm."

"To apply for a teaching position at Hogwarts without the ability to teach, his character is really terrible."

Hermione added, her disdain for Lockhart reaching its peak.

In her view, Lockhart's behavior was undoubtedly wasting the time of young wizards, jeopardizing the future of the magical world, and damaging the image of Hogwarts professors.

"Our Lin Yue is much better; the students who attend her classes all give her high praise."

Hermione couldn't help but reach out and ruffle Lin Yue's hair as she spoke. It was fluffy and felt really good to the touch.

Being called by her full name and having her head patted, Lin Yue looked up again, just as she finished writing whatever she had in her hands.

Closing her notebook, Lin Yue's gaze drifted silently over Hermione and the other three girls.

The four girls had already gotten used to Lin Yue's gaze. At first, her almost lifeless stare might have frightened people. However, once they understood the gentle and scarred heart beneath Lin Yue's "calm" exterior, no one cared about her expression anymore.

In the face of her gaze, her friends only felt heartache and reassurance.

"I hope the school can find a Defense Against the Dark Arts professor for next year," Cho Chang said, glancing at Hermione, who was subtly holding Lin Yue's waist, and propped her chin up with her hand.

"One professor every year... I hope the school can find someone," she added.

Marietta shook her head, secretly admiring the boldness of her junior, Hermione, as she watched her actions.

Penelope cleared her throat a couple of times and slightly averted her gaze. "I hope they can not only find someone to be the Defense Against the Dark Arts professor, but that the person they find also has some real skills."

"I have to take my O.W.L.s next year..."

Letting out a sigh, Penelope seemed to already envision her busy schedule for the coming year.

However, to her surprise, that busyness was about to be abruptly cut short before it even began.

Lin Yue was embraced by Hermione, and when she looked down at Hermione's hand, her heart skipped a beat. Without any reaction, she raised her head and tucked her quill and ink bottle back into the pocket of her wizarding robe.

At the same time, Lin Yue reached out and handed the notebook she had just finished writing to Penelope.

" Senior Penelope, this is for you."

Lin Yue's voice had no fluctuations, yet it made everyone present feel very close to her.

Penelope was taken aback for a moment, took the notebook, and curiously looked at its cover. "Is this for me? What’s written inside? Can I open it and take a look?"

"Of course," Lin Yue nodded. "This is a gift for Senior Penelope. It contains all the key points for the O.W.L. exams."

"Since I'm not sure about Senior Penelope's course selections, I've included the content for all the elective courses in it."

Penelope swallowed hard and carefully opened the notebook in her hands.

The knowledge points and important notes were listed one by one in the notebook, written concisely and clearly. No wonder it could summarize several subjects in one notebook.

"The first half contains knowledge points and notes related to practical exams," Lin Yue explained in a serious manner. "The second half is about question reasoning and predictions."

After a two-second silence, Lin Yue continued to elaborate, "Based on my analysis of past O.W.L. exam written and practical content."

"The O.W.L. exam has not updated its written or practical content for a long time; the questions are basically composed by selecting a few fixed topics."

"It's just that each time, the content is shuffled and rearranged."

"Through probability calculations and human psychology analysis, I have written down the most likely question directions and methods for the next O.W.L. exam in the second half."

"The estimated accuracy rate can reach about eighty-five percent."

As she fluently narrated her analysis and summarization process, Lin Yue's gaze was fixed on Penelope.

"However, considering that studying should be taken seriously and done to the best of one's ability, and since there is still a long time before the O.W.L. exam."

"I suggest that Senior Penelope memorize all the knowledge points in the first half of the notebook, just to be prepared, and then focus on memorizing the question predictions in the second half before the exam for a last-minute boost."

"Merlin's predictions..."

Cho Chang murmured, staring blankly at the notebook in Penelope's hand.

"The exam content... can it really be predicted in advance?"

Marietta also struggled to regain her ability to speak, feeling somewhat incredulous.

Lin Yue nodded affirmatively, her voice still devoid of any fluctuations, "Yes, the exams in the magical world are too predictable. Based on fixed knowledge points, combined with probability and psychological calculations, one can deduce the exam content."

The same method wouldn't work in Lin Yue's original world.

Because every year they would have a new question setter, and you would never know.

The exam you encounter could be several years beyond the syllabus; it could be one year, two years, or even five years.

Usually, it is two years beyond the syllabus, and occasionally it could be five years.

As for not being beyond the syllabus, or only one year beyond... if you encounter that, it would truly be a stroke of luck.

Hermione took a deep breath, removed her hands from Lin Yue's waist, and placed both hands on her shoulders.

"You can do this, please, please don't let Harry and Ron know. Also, you can give them the summary of the knowledge points, but you absolutely must not give them the predicted exam questions."

Hermione had no doubt that as soon as Harry and Ron found out about this, they would definitely ask Lin Yue to predict the exam questions, hoping to ease their study pressure a bit.

Moreover, given Lin Yue's "personality," it was unlikely that she would refuse them.

Studying shouldn't just be for exams, so for the sake of her two close friends' learning outcomes, Hermione still told Lin Yue in advance not to give them the predicted exam questions.

Hermione wanted Harry and Ron to study well, and Lin Yue instinctively concluded, nodding with a cold expression.

"Okay, I won't tell them."

Their conversation ended, and Penelope finally came back to her senses.

"Lin Yue! Thank you so much, you've really helped me a lot!"

Penelope cheerfully stood up and tightly hugged Lin Yue's little head in her arms.

"You're welcome," Lin Yue replied in a muffled voice.

After being held for a good ten seconds, Lin Yue was finally released by Penelope.

The first thing Lin Yue did after being let go was to take a deep breath.

The Hogwarts train slowly started moving, and after a while, Harry and Ron finally opened the compartment door and walked in.

"Where have you two been sitting?" Hermione turned to glance at the empty hands of the two.

"We were in Fred and George's compartment," Harry explained as he and Ron sat down next to Hermione.

Hermione leaned her head on Lin Yue's shoulder, comfortably squinting her eyes.

"I told you last year and you agreed to travel with us to France. Is that okay?"

Turning her head slightly and resting her chin on Lin Yue's shoulder, Hermione looked at her with bright eyes.

"Of course, no problem."

Lin Yue responded in a flat tone, acknowledging that since she had previously promised Hermione to go with her, she would definitely go if she could. Moreover, now that she knew this world was not destroyed and there were no executioners, she no longer needed to worry about the safety of those around her.

Listening to Hermione and Lin Yue discuss their holiday plans, the others couldn't help but chat among themselves. Cho Chang planned to return to her hometown during the summer vacation, as her grandmother missed home and wanted to return to her roots in her old age. Marietta was going to accompany her mother, who worked at the Ministry of Magic, on a business trip to the United States; her mother would be working while she would be sightseeing.

"Ah... you all get to go out and have fun," Penelope said, her hands supporting her face in distress. "I just have to stay home and study; I need to prepare well for the O.W.L. exams."

Lin Yue blinked and said slowly, "As long as Senior Penelope remembers all the knowledge points in her notes, she can get an O in the O.W.L. exams no matter what they test on."

"Considering Senior Penelope's own knowledge base and level, it shouldn't take more than two weeks. You have time to relax."

Penelope nodded thoughtfully, "What Lin Yue said must be right... Maybe I can plan a short trip for myself."

Harry looked at everyone sharing their summer plans and couldn't help but feel a bit envious. Ron, sitting next to him, patted his shoulder.

"Don't look so glum, Harry. If you're not happy at the Dursleys, just come over to my place."

"You already knew last summer that my family welcomes you."

"Thanks, Ron." Harry smiled gratefully, but silently added to himself, but I can't always trouble your family.

Summer vacation is a time when families finally get to reunite as long as I can endure it... I should just bear it and try not to disturb them.

On the other side, Hermione was satisfied to confirm that Lin Yue would go with her to France. She directly wrapped her arms around Lin Yue's waist and rested her head on her shoulder, thinking that since there was still a long time until lunch, she could take a good nap first.