I've already become a Hogwarts professor, and the system only just appeared.

Watching Su Yu take the items away, Sirius frowned: "I think these should be given to Dumbledore to destroy."

"What, you don't believe me?" Su Yu said with a smile.

"No, not at all. According to you, this thing is very dangerous. I think it would be safer with Dumbledore around." Sirius said this, but his face still clearly said, "I don't believe you."

Su Yu knew that Sirius Black was definitely on Dumbledore's side, and he was prepared for this, so he said:

"Don't forget, I already have experience destroying Horcruxes once, so I think I should be more professional in this regard!"

Seeing that Sirius was still somewhat hesitant, Su Yu said, "Alright, I'll destroy it when I get back to Hogwarts, and then I'll give it to Headmaster Dumbledore. Are you relieved now?"

Chapter 167 Return to School (Part 2)

Seeing that Su Yu had already said so much, Sirius couldn't say anything more, but he still decided to tell Dumbledore about it later.

A few days later, at King's Cross Station in London, Su Yu and Sirius Black, along with Harry and the Weasleys, hurriedly boarded the Hogwarts Slow Train.

“Professor Sue, are you traveling with us on the train to Hogwarts because of Peter Pettigrew?” Harry suddenly asked.

Before Su Yu could answer, Sirius Black gave a bright smile: "Of course not, kid. Actually, we were going to school anyway, so it just happened to be on the way."

Su Yu showed no respect for Sirius, saying, "You don't need to be so considerate of his feelings, and he's not a child anymore."

“Harry, the reason we’re on the train with you is because of Peter Pettigrew. You’re too weak. If that guy chooses to sneak onto the train to deal with you, you won’t stand a chance.”

"Sue, he's still a child!" Sirius exclaimed, clearly displeased.

Su Yu curled his lips: "Voldemort doesn't care if he's a child or not, and neither does Peter Pettigrew, so you have to grow up as soon as possible and become stronger as soon as possible."

“A wizard’s growth is gradual. No one is born a powerful wizard. His magic hasn’t even reached its peak yet, so how can he make himself stronger as quickly as possible?” Sirius continued to argue.

"Come on, Sirius, he's already in third grade, but he can't even cast a single Ironclad Spell. Think about what you were like in third grade!" Su Yu argued.

Sirius got a little carried away: "How can that be the same? I'm a genius of the Black family. I've been learning magic since I was seven..."

The helpless trio of Harry and Mew listened silently to the two adults arguing, but for some reason, the more they listened, the more something seemed off. It was like these two were in Versailles.

"Enough!" Hermione couldn't hold back any longer and shouted angrily, "Professors, if you want to argue, you can go to another carriage. There's no need to humiliate us here."

Sirius and Su Yu exchanged a glance, then turned and left together in perfect unison, leaving the three speechless.

"It's alright, Harry, don't worry about it. After all, they're all geniuses!" Ron comforted Harry.

“I’m fine, Ron. I know I’m not special.” Harry was a little disappointed, but he tried his best to compose himself.

Hermione glared at Ron and said bluntly, "You're not even as good as Harry. Who gave you the courage to comfort him?"

……

Su Yu and Sirius arrived at a private box reserved for teachers. Sirius was still unconvinced: "Su, I know you mean well, but he needs more encouragement!"

"There are already enough people encouraging him, and there should be different voices too," Su Yu said indifferently.

There's no point in talking to someone who doesn't see eye to eye. Sirius felt that the goodwill he had developed for Su Yu because of Regulus was quickly fading away, so he didn't bother with Su Yu anymore and leaned back in his chair to pretend to doze off.

Time flew by. The train passed through Shandong and over grasslands. As darkness fell, and we were about to reach Hogwarts, the brakes suddenly clicked, and the speed gradually decreased.

"What's going on?" Sirius immediately regained his senses and asked warily.

Su Yu felt the rapidly decreasing temperature around him and said, "It seems to be a Dementor. You go protect Harry, I'll go out and take a look."

After saying that, Su Yu used a phantom teleportation technique and arrived on the roof of the train. The next moment, twenty or thirty Dementors were flying around the train, making hissing noises.

Seeing these guys, Su Yu felt no fear, but even a little excited. Ever since he learned that Peter Pettigrew had escaped from prison, Su Yu had been wondering if the scene of the Dementors intercepting the train from the original story would still happen.

Su Yu had this idea not because he wanted to see any famous scenes, but simply because he was very curious about Dementors.

Su Yu had never seen a Dementor before, but he had heard that these creatures feed on people's happy emotions, and emotions are one of the important elements in a wizard's spellcasting.

So Su Yu had always had an idea: was it possible to create an alchemical tool that could collect people's emotions?

Unfortunately, Dementors are extremely rare and are all concentrated in Azkaban, under the supervision and protection of the Ministry of Magic, which has prevented Su Yu from having any research material.

This was a perfect opportunity. Just as a Dementor spotted him and charged toward him, Su Yu stood there motionless, like a little wizard terrified by a Dementor.

As they passed each other, the Dementor's face was almost touching Su Yu's. At the same time, he felt a suction force rising from the depths of his soul, violently pulling out his happy memories.

A strong wave of dizziness hit Su Yu's brain, causing him to stumble and almost fall off the roof of the train.

"Damn, that was really something!" Su Yu couldn't help but swear. It wasn't that he couldn't dodge that kiss, but rather that he wanted to experience firsthand what a Dementor's kiss was like.

To Su Yu's surprise, this power was actually a magical attack that could directly affect the soul.

Since that's the case, then I won't hold back. Su Yu took out a flying broom from his Seamless Stretch Bag and quickly escaped the Hogwarts Express.

Seeing this, the Dementor that had attacked him thought the human was trying to escape and immediately gave chase. In this chase, Su Yu soon flew to a deserted open space.

Seeing that the Dementor was still chasing closely behind him, Su Yu suddenly turned around. The reason he lured the Dementor out was that he didn't want to be seen by others.

After all, these Dementors are, in principle, employees of the Ministry of Magic, and if one of them disappears without cause, the Ministry of Magic will definitely investigate.

Similarly, Su Yu didn't plan to use his wand to capture this Dementor, nor did he intend to cast the Patronus Charm directly, lest the Ministry of Magic find any clues.

Su Yu patted the badge on his chest, and three metal ravens flew out from his chest again. Su Yu used a transformation alchemy technique, and the three ravens gathered on Su Yu's arm.

After a period of transformation, a mechanical glove covering half of Su Yu's right arm appeared. He sat on a broomstick, watching the Dementor flying towards him, and made a palm with his five fingers, pointing it at the Dementor.

The Dementor was puzzled. Why did this person suddenly stop running away? What did it mean by reaching out its hand? With the Dementor's intelligence, it had no idea what the person was trying to do. It just wanted to get closer and absorb all of the person's pleasure.

Chapter 168 Upgrading Jarvis (Part 1)

The Dementor fanned itself with the black cloth covering its body and sped towards Su Yu. It didn't know what the man in front of it wanted to do, but since he dared to stop, it would let him experience the legendary Dementor's Kiss.

But as it charged, the Dementor noticed a white light shining from the center of the man's right hand, which was covered by a steel glove. It felt like the power of a Guardian Charm!

Escape! The word flashed through the Dementor's small brain.

Unfortunately, it was too late when he tried to escape. Su Yu controlled the steel glove on his right arm, continuously outputting white light mist, but he did not condense the light mist into a guardian deity. Instead, it formed a spherical cage.

The Dementors were trapped in the spherical cage, struggling left and right, but they could not break free. Then Su Yu's steel gauntlet began to disintegrate, turning into butterflies.

The butterflies flapped their wings and landed on the outer edge of the white cage, eventually covering it completely. The white cage transformed into a metal cage, and the butterflies then connected and merged one by one, forming complex magical patterns on its surface.

Su Yu continued to output magic power, activating those magical patterns, causing the metal sphere, which was originally nearly two meters in diameter, to shrink continuously until it became the size of an egg.

"Hehe, it worked!" Su Yu chuckled and bounced the small ball in his hand. He put away his flying broom, and with a phantom teleportation, he was back on the train.

"What happened?" Su Yu asked.

By this time, the other Dementors had already left, and Su Yu entered Harry Potter's box, where he saw Harry lying on the floor, with Sirius Black checking on him.

Several adult wizards stood beside Sirius Black, who appeared to be Aurors. Some of them were familiar faces; he should have seen them at the Barty family manor last time.

"It's nothing, I just had some of my happy emotions drained by the Dementor and passed out," Sirius said.

Sirius then pointed to several wizards and said, "These are Aurors from the Ministry of Magic, specifically responsible for tracking Peter Pettigrew."

The Aurors were quite polite to Su Yu and Sirius, after all, Sirius had a close relationship with Amelia, and Su Yu was a rising alchemist in the British magical world, each of them being of noble status.

“I’m sorry, Professor Su, but these Dementors said they smelled Peter Pettigrew on the train, so they boarded to check,” said the leader of the Aurors.

Su Yu didn't care and waved his hand: "You don't need to apologize to me. I wasn't hurt. The one you need to apologize to is that child."

“Yes, yes, we will prepare compensation for Mr. Harry Potter,” said Captain Auror.

At this moment, another Auror entered the private room. He whispered something in the captain's ear, and the captain's face turned extremely ugly. He said:

"Professor Su, Professor Black, we've lost one of our Dementors. I wonder if you two used any overly powerful spells when you were expelling it?"

"What do you mean? Dementors can get on the Hogwarts Train, but we're not allowed to resist?" Sirius Black said, easily angered.

Captain Auror quickly explained, "No, no, no, you misunderstand, Professor Black. In this situation, even if you kill the Dementor, there will be no problem, but the Ministry of Magic will never allow such dangerous magical creatures as Dementors to escape its control."

Sirius agreed wholeheartedly, as creatures like Dementors could be extremely dangerous if they got out of control: "I used the Patronus Charm, which only banished one Dementor."

Su Yu also said, "I only used Apparition to go out and take a look; I didn't cast any other spells on the Dementors."

The Aurors then used the Flashback Charm to check Su Yu and Sirius's wands, but found nothing. They then went to check the wands of the older students.

It took about an hour for the train to start moving again, and Harry woke up. Sirius gave him a piece of chocolate, which made him look much better.

Sirius Black pulled Su Yu back to their private room and cast a soundproofing spell: "Was that Dementor you made?"

“We may be close, but if you talk nonsense, I will still sue you for defamation,” Su Yu immediately stated his position.

"Hmph, I knew it was you!" Sirius's eyes still held suspicion.

Su Yu quickly changed the subject, saying, "Don't you think the Dementors seem particularly interested in Harry?"

Sirius thought about it carefully and realized it was true. Dementors sent out on duty were, in principle, not allowed to have contact with ordinary wizards.

But the Dementors attacked Harry both on Privet Drive and on the train, which is very unusual.

"What do you mean?" Sirius asked.

Su Yu shook his head: "I didn't mean anything by it. You're Harry's Defense Against the Dark Arts professor this semester. If Harry is really targeted by Dementors, perhaps you can teach him some magic to deal with them."

"You mean, the Guardian Angel Spell?" Sirius continued to ask, but Su Yu just smiled and didn't say anything more.

……

Back at Hogwarts, perhaps due to the influence of the Dementors, some students were filled with anxiety, and even the subsequent Sorting Ceremony seemed somewhat hasty.

After the sorting, Dumbledore introduced Sirius Black and Hagrid, the two new professors. Everyone was familiar with Hagrid, and Sirius Black was a celebrity who had been featured on Toutiao (a Chinese news and information platform). Everyone gave them a round of applause.

After finishing their meal, the students returned to their dormitories. Dumbledore looked at Su Yu, his eyes conveying the message: "Kid, aren't you going to hand over your Horcruxes to me?"

Su Yu ignored him and went back to his office with his head down. What a joke! What about my network server? What about my free skill points?

Back in his office, Su Yu didn't delay and immediately began to destroy the Slytherin locket. There were two reasons why Su Yu insisted on waiting until he returned to Hogwarts.

Firstly, the magic server is still in the office. If it doesn't come back, Jarvis can't be directly strengthened. Also, it's unknown whether the soul whose consciousness has been erased will deteriorate if left for too long.

Secondly, there's the question Su Yu asked Sirius on the train: why is Harry Potter so attractive to Dementors?

Su Yu felt that the reason might lie in Voldemort's remnant soul, because the Killing Curse Voldemort cast on Harry Potter at the end merged a part of his own soul into Harry's soul, forming the seventh Horcrux.

It was this Killing Curse that tore a hole in Harry's soul and forcibly inserted a piece of the splicer.

Dementors' food is pleasure, but more fundamentally, it's the power of the soul. Ordinary people's souls are complete, so while they are food for Dementors, they are not as tempting.

But Harry is different; his soul is broken, like a wound cut open in the sea, where sharks from kilometers away will be drawn by the scent of blood.