The next day.

When Harry and Ron came to the school hospital to visit Hermione, they found that she was no longer depressed as she had been in the past few days. Instead, she had a furry face and waved her wand enthusiastically, occasionally flipping through the parchment on the table.

"Hermione, what are you doing?"

"Of course I'm practicing magic. If nothing goes wrong, I might be able to learn it before school starts."

"Why before school starts?" Ron was a little confused.

"Because it can help me solve some small problems." Hermione squinted and smiled.

So, during the half hour that Harry and Ron stayed in the ward, they watched Hermione repeat the same action hundreds of times, and from time to time she had to stop and make records on a form.

...

Felix closed the door of the office and walked out neatly dressed.

Along the way, he was still a little sighing.

After he revealed that he had successfully obtained the research materials and once again rejected the diary's temptation, Tom in the diary finally became autistic and completely blocked his communication with the outside world.

No matter how Felix tried, the other side seemed to have made up its mind to let him do whatever he wanted. Even when he attached a cluster of white fierce fire in front of the diary, he did not get any response.

"Tom, I don't believe you will give up on yourself." Felix had all kinds of thoughts in his mind, and he even thought that he was waiting for an opportunity.

So he sealed the diary more carefully, and even carved a warning magic rune on the box.

Before going out, he placed his wallet (Binding Vine version) at the door to prevent unreliable little wizards from breaking in and taking the diary away.

"Perhaps, it's time to find a chance for you to complete your final curtain call, Tom."

In the corridor of the castle, Felix met Peeves who was playing a prank.

Peeves was holding a tin bucket full of mud in his arms, and at this moment he was smearing thick layers of mud on his armor.

"Peeves, have you seen Ms. Grey?" Felix asked him.

Peeves looked at him, seemed to be surprised, and then chuckled, "Oh, professor, I didn't see it... I don't care about that woman with her nose in the air."

"I think someone will know, that disgusting stalker~" He said with his teeth bared while floating in the air.

"Be polite, Peeves." Felix said calmly, "Or, you want to try my magic again."

"No, Felix Hep! You can't..." Peeves showed a fearful look on his face, and he hurried away through the wall.

"Bang!"

The tin bucket in Peeves' hand hit the ground with a loud noise, and the mud inside splashed everywhere.

Felix waved his wand, and the invisible barrier blocked the soup and water three feet away.

"Humph, Peeves, it's you again! I must apply to Headmaster Dumbledore to drive you out of the castle..." A panting, red-faced man rushed over from the corridor, waving his fists and venting his anger hysterically.

It was Filch, the caretaker of Hogwarts.

"Oh, ah... Professor Happ, have you seen Peeves?" The angry Filch did not see the expected enemy, but saw Felix, who was dressed neatly.

"Hello, Filch, Peeves just left." Felix waved his wand, and the mud on the ground and armor disappeared. "By the way, did you see Ms. Grey today?"

"Is it the Ravenclaw ghost?" Filch sniffed, "Let me think, I seem to have seen... a tall ghost, the one who doesn't talk to people much? I saw one in the courtyard, but I'm not sure if it's her."

"Thank you, Filch."

Felix came to the courtyard and glanced around. At the end of the courtyard railing, he saw a slender ghost floating in the air.

She found Felix looking at her, raised her eyebrows in surprise, then turned and floated away through the wall.

"Wait, Ms. Grey!"

Felix jumped over the railing and chased her to a secluded corridor.

She finally stopped, hanging a few inches above the ground. She was very beautiful, with long hair down to her waist and a silver robe that trailed on the ground. But at the same time, she held her head high, looking very arrogant and defiant.

He had met this ghost several times when he was in school, but he had never spoken to her once. If he hadn't accidentally come across the private conversation between the Bloody Baron and her, he wouldn't have realized that this Ravenclaw ghost with a very low sense of existence actually had such a big background.

"Ms. Grey, I'm Felix Hep."

She nodded and said nothing. There was no enthusiasm in her eyes.

"I want to know about the early days of the school, the stories of the four founders. There are too many vague places in the existing records."

"I'm afraid," she said, turning to leave, "I can't help you."

"Wait, ma'am--" Felix shouted as he saw her drifting farther and farther away, "I know you are the daughter of Rowena Ravenclaw."

She stopped and turned to look at him. "You know my background? You came here specifically for me?"

"Yes, I--"

"Oh, another one!" She hovered in the air, her lips twisted into a sneer.

"Another what?" Felix asked, but he quickly realized that he was not the first person to ask her about the secrets of Hogwarts.

"Another ambitious guy!" She said rather sharply: "I meet him every ten years, trying every means to find out and deceive my trust..."

"You mean Voldemort?" Felix asked.

She suddenly stopped talking, with a surprised expression on her face. Then she felt offended, floated up two or three feet, and looked down at him.

"Yes, I guessed it, the diadem of Ravenclaw. Voldemort has always coveted the relics of the Big Four, but I don't care about these. I want to know more--"

Felix was interrupted, and the ghost said angrily and stuttered: "Ravenclaw's diadem can bring wisdom to people, you don't understand its power at all! Countless people dream of it!"

"-The past of Gryffindor and Slytherin." Felix also finished the sentence just now.

The two people's words intertwined, and a faint echo came from the empty corridor - "You don't understand how powerful it is!" "Gryffindor~" "Slytherin's past~"

Ms. Grey was stunned, "You want to know these?"

"Of course."

"Ah, this," she floated in the air, seeming a little at a loss, "Gryffindor... Slytherin... what do you want to know?"

She asked a little stiffly at last.