The Bloody Baron is the ghost of Slytherin, but even the young wizards of this academy keep their distance from him.

He looks really scary, and Peeves is most afraid of him.

"Long time no see, Baron." Felix greeted.

The Bloody Baron floated steadily in place, staring with dull eyes, his gaze always stayed in the direction where Ms. Grey left.

After a long time, he said in a hoarse voice: "Hello, Hep."

Felix looked at him. During a night tour at school, he accidentally ran into the conversation between the Bloody Baron and Ms. Grey. He was begging for her forgiveness, and Ms. Grey cursed him to never be redeemed.

It was also on that night that he knew the identity of Helena Ravenclaw. He also roughly sorted out the entanglement between the two. Helena took away the crown of Ravenclaw and did not dare to go home. As her admirer, the Bloody Baron was commissioned by Rowena Ravenclaw to bring her daughter back.

There was a fierce argument between the two, and the final result was that the Bloody Baron accidentally killed Helena. In remorse, he also committed suicide with the weapon that killed Helena.

"Baron, you said that her name is a taboo. What do you mean?" Felix asked.

The Bloody Baron did not answer. He just said dryly: "I found that you did not fall into the dark magic. In this respect, you are better than me."

Felix's face became serious, and he whispered: "You reminded me."

"Without me, you can also break free by yourself. I saw the form you recorded..."

"Oh," Felix also thought of the happy place, "That is a psychological measurement form in the Muggle world. It is a backup plan I prepared in advance to prevent myself from getting deeper and deeper... But I still have to say that if it weren't for you, I might have to delay it for a month or two to realize the seriousness of the problem."

The erosion of the soul by the dark magic is secretive, and the data on the measurement form is always lagging. When you really wait until you find something abnormal, the danger may have already occurred.

The Bloody Baron floated away silently.

Felix stared at his skinny back in a daze, and finally shook his head. He could not participate in the matter between the two ghosts, nor could he mediate - the ghost's knot was not so easy to untie.

Ghosts are the product of unwillingness to die and strong obsession to stay in reality. Obsession is the basis for them to maintain their own existence. It is also because of this that their cognition is almost always stuck at the time when they were still alive.

This is somewhat similar to the portrait in the headmaster's office, but ghosts can change after all.

However, once they change, the result may not be good.

According to Felix's speculation, if Hogwarts publicly fired Professor Binns, he might disappear on the spot - because Professor Binns' obsession is teaching.

But considering whether this method is humane and how to find another old scholar to replace him, this suggestion has never been proposed under these two difficulties.

He returned to the office, opened the three manuscripts selected from the Slytherin materials, and read them carefully. This information is also very characteristic of Slytherin himself - he proposed a conjecture, whether the unique talents of magical creatures can be converted into wizard spells.

This idea has existed since ancient times, such as chameleons and the Disillusionment Charm, invisible beasts and the Invisibility Charm, but in fact there is no relationship between them, and the development of spells is extremely accidental.

It is only when later generations look back that they find that some of the magic of wizards and the talents of magical creatures themselves have great similarities.

And Slytherin tried to find a method that can stably convert the talents of alien magical creatures into wizard spells, but obviously, he later gave up this idea.

Slytherin chose to give up, and young Tom did not pay attention to it, as can be seen from the fact that he hid this part of the information in the Room of Requirement and used it to cheat people.

But Felix was very interested in it. He memorized this incomplete information firmly, and maybe he would use it at some point in the future.

In the next few days, Felix flipped through books, watched movies, and lived a very leisurely and comfortable life. When he was free, he would check the learning progress of his assistant and give appropriate suggestions, and time passed by little by little.

Finally, the Christmas holiday ended and the new semester at Hogwarts began.

That evening, the train to Hogwarts sent the students back. Everyone gathered in the hall and the school suddenly became lively.

After the baptism of the Christmas holiday, they seemed to have forgotten the attack that happened last semester and happily shared their experiences with each other.

"My mother took me to visit relatives abroad. I didn't expect that I actually had a cousin who went to Ilvermorny!" A little wizard said happily, and the people around him asked about the details.

"What is Ilvermorny?"

"A magic school, similar to Hogwarts, but in the United States."

"Really? I thought there was only one magic school in the world!" A little wizard sighed.

At the Gryffindor table, Hermione was wearing thick clothes, a knitted hat on her head, and a huge mask covering her face.

"Hermione, what's wrong with you?" Hannah Abbott, who was in the same class as her, asked in confusion.

"I have a cold, cough cough!" She said briefly.

"But I found that the color of your eyes has changed, a bit like a cat..." The little witch looked at her carefully.

"Uh... maybe it's because of magic," Hermione changed the subject guiltily, "Hannah, how did you spend your vacation?"

Hannah's attention was diverted, she pouted, "Staying at home, besides being safe, it's so boring. Do you think there will be attacks? I read a lot of newspapers during the vacation..."

"Don't worry, Hannah. There won't be attacks." Hermione said very confidently.

"How do you know?"

"Ahem, you'll know in a while." Hermione said, and on the other side, Harry pulled her sleeve.

He whispered, "Hermione, is your magic not finished yet? To be honest, your outfit is a bit weird."

She sighed distressedly, "No - I can barely use it, but the effect is not very good, and there is a layer of light hair on my face. At least for another day or two, Professor Happ said that my progress is very fast."

Ron knocked on the empty goblet with his fork, "But how are you going to eat later?"

"No!" Hermione said angrily.

"Dangdangdang!" In the teacher's seat, Dumbledore knocked on a glass in front of him.

The hall gradually became quiet.

Dumbledore stood up, his face flushed as he said, "Welcome back, little wizards."