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

Upon seeing Su Yu, Lucius Malfoy straightened his collar, put away his wand, and said, "It has indeed been a long time. I heard you are now a professor at Hogwarts. Congratulations!"

Lucius Malfoy was aware of Su Yu's abilities; back in school, he had used magical items created by Su Yu to successfully show off on several occasions.

Before becoming Death Eaters, the two had collaborated quite a bit. Lucius found every alchemical item produced by Su Yu very easy to use. It wasn't until he became a Death Eater that the two lost contact.

Later, when Voldemort arranged the operation to capture Su Yu, Lucius did not participate, but he knew the final casualty figures perfectly well, so he did not want to provoke Su Yu.

"Thanks, Lucius. By the way, your son looks a lot like you back then, but in terms of skill, he's far inferior to you at that age!" Su Yu glanced at Draco Malfoy beside him and teased.

Lucius was also very dissatisfied with his son. He glared at Draco and said, "Then I'll have to ask you to take good care of him at school from now on."

Su Yu nodded and said to Draco Malfoy, "Hehe, don't worry about that. Draco and I are very close, aren't we?"

Draco Malfoy couldn't help but recall that unbreakable vow, and bowed his head, saying, "Yes...yes!"

At this moment, Arthur Weasley, who had fallen to the ground, got up and stood behind Su Yu. Lucius Malfoy's pupils shrank: "What, are you standing with the Weasleys now?"

“You know I’ve always stood with justice, and I advise you to do the same, since you’re not always so lucky.” Su Yu shrugged.

"Alright, I think we have other things to attend to, so we'll take our leave!" Lucius clearly didn't want to delve deeper into the topic, so he flicked his cloak, grabbed Draco, and left.

Seeing Lucius walk away, Molly said to Su Yu, "Thank you, Su!"

"It's alright, let me see if Lucius has tampered with Ginny's book." Su Yu waved his hand and came to Ginny's side, pulling out the book "Beginner's Guide to Metamorphosis".

"Tamper with her? If he dares, I will never let him get away with it!" Arthur said tough words, but his body language betrayed him as he leaned closer. He only had one daughter, and he couldn't let her be in danger.

Su Yu confidently opened the book. He thought that Tom Riddle's diary should be tucked inside, and that he could find one of Voldemort's Horcruxes just by opening it randomly.

But the reality was completely different from what he had imagined. The book was brand new and contained no random or nonsensical material.

When Arthur saw Su Yu suddenly stare blankly, his heart tightened, thinking there was really a problem. He quickly picked up "Beginner's Guide to Transformation" and checked it inside and out before finally letting out a sigh of relief: "It seems there shouldn't be any problem?"

"Let's take a look at the other books!" Su Yu squatted down and took out the books from the crucible one by one, examining them carefully.

He flipped through the diary twice, but still couldn't find it. At that moment, Su Yu suddenly panicked.

During his year back at Hogwarts, thanks to the system and his memories from his previous life, although he encountered dangers and even faced Voldemort, he felt that overall things were progressing according to his plan.

This time, however, his plan failed. The Horcrux he thought he could easily obtain disappeared without a trace, giving him a feeling that things were getting out of control.

Taking two deep breaths, Su Yu calmed himself down: It's okay, it's okay. My arrival was meant to change this world. The plot will inevitably deviate sooner or later. Besides, I have the system. It'll be fine...

"Su, what's wrong? Did you find something?" Arthur noticed Su Yu's uncertain expression and began to have some doubts about his examination.

Su Yu stood up, forced a smile, and said, "It's nothing. It seems I was overthinking it. I have something to do, so I'll go back first."

Through the Leaky Cauldron's Filo network, Su Yu first arrived at the Three Broomsticks, then requisitioned Lupin's office, took out a piece of parchment, and began to write and draw.

At this moment, Su Yu's mood had calmed down considerably, and he was much more at ease with the unexpected changes. However, he did not intend to let Voldemort's Horcruxes go unchecked.

He wrote names one by one on the parchment: Harry Potter, Dobby the house-elf, Dumbledore, Lucius Malfoy, Voldemort...

Connecting these names with lines, Su Yu muttered to himself, "Dobby's appearance shows that Malfoy's plan has not changed; he is already preparing to place the notebook at Hogwarts."

"But why wasn't the target Ginny? Who would he target? Why did he change his original plan? There must be some variable I don't know about. What could it be?"

Su Yu's mind seemed to be filled with a hundred thousand whys, and he couldn't figure it out for the time being. But among the people Lucius met today, besides the Weasley family, Su Yu knew another person, and that was the owner of Borgin Burke's shop.

Su Yu knew Karaktakus Burke; he was slick, greedy, and shrewd. If he went to him directly, he would definitely not get anything. He had to think of another way.

So Su Yu took out his phone and sent a message to Tonks: "Are you busy lately?"

Tonks quickly replied, "I'm so busy. Thanks to the new regulations from the Ministry of Magic, the prices of dark magic items on the black market have dropped significantly recently."

“We have to be extra careful when we go on missions now. Those poor outlaws from before might suddenly pull out a dark magic item that you can’t even imagine.”

"Some wizards even discard dark magic items directly. It's fine if they're left in no man's land, but if some are picked up by Muggles, it can have very bad consequences."

Su Yu patiently listened to Tonks finish complaining before saying, "I have some news that yesterday in Knockout Alley, the Borgin & Burke store acquired a new batch of high-risk dark magic items."

"How accurate is the information?" Tonks asked excitedly.

Aurors generally don't interfere much with Knockturn Alley because the wizards there always hide the truly dangerous dark magic items very well.

What can be brought to the forefront may be illegal, but it is not very harmful or valuable. Even if someone is arrested, they will be released soon. Over time, the Aurors have started to turn a blind eye to Knockturn Alley.

However, if there is concrete evidence that a batch of high-risk dark magic items can be found, the Aurors are willing to take the risk.

Su Yu wasn't really sure what exactly Lucius sold to the Platinum Blog Store, so he could only give a vague answer:

"Ah... the accuracy isn't very high, so I was thinking of going to check out some shops with you. I wonder if you'd be interested?"

Tonks was delighted: "Of course I'm interested. Wait a moment, I'll go ask the captain right away. Once he hears from you, he'll definitely agree."

Chapter 77, Boginborough Store

Just as Su Yu was contacting Tonks, Lucius Malfoy walked alone into a house in Knockturn Alley. He was wearing a large cloak and a terrifying golden mask on his face.

Ascending the narrow staircase to the second floor, Lucius saw the room's owner, an elegant middle-aged man dressed in traditional aristocratic attire.

His skin was pale, even paler than that of the Malfoys. He had a scar over his eye. If Su Yu were here, he would recognize him at a glance as Dracula.

"So you want to acquire a dark magic item that can open the Chamber of Secrets in Slytherin?" Malfoy asked with a hint of wariness.

“That’s right! So you really have such an item?” Dracula remained wary of Lucius Malfoy.

“You’ll send it to Hogwarts before school starts, right?” Lucius continued.

Dracula frowned: "This is none of your business."

“I must guarantee that this thing will be delivered to Hogwarts before the start of the school year, otherwise I will not sell it.” Lucius’s tone was somewhat firm.

"Then why don't you do it yourself?" Dracula became increasingly dissatisfied.

Lucius did not answer directly, but softened his tone: "If you can guarantee that it will be delivered to Hogwarts before the start of the school year, I can only charge you 300 Galleons."

"You've got quite the scheme, achieving your goal while also earning 300 Galleons. Where in the world is there such a good deal?" Dracula sneered.

Lucius laughed: "Since you're interested in Slytherin's Chamber of Secrets, you'll bring it to Hogwarts sooner or later. I'm just setting a time limit; everyone gets what they need."

"I'll also give you a piece of information: as long as you send it into Hogwarts, it will find and open the Chamber of Secrets in Slytherin on its own."

Dracula hesitated for a moment, but finally nodded and said, "Deal. If you dare to lie to me, I will make sure you die."

“If you can’t get it into Hogwarts on time, I’ll kill you too!” Lucius retorted without flinching.

Soon, the two entered into a contract and completed the transaction. Lucius received 300 Galleons, handed a notebook to Dracula, and then quickly left the house.

But what Lucius didn't notice was that, the moment he turned around, a thin line of blood stuck to his clothes.

After the Jumping Pot Secret Realm shattered, Dracula returned to London. He had already learned through his own channels that Su Yu was a professor at Hogwarts.

But even after being sealed away for 500 years, Dracula knew that Hogwarts was not a place where he could run wild.

So he came up with a plan: to control a Hogwarts student, make him cause a big enough disturbance at Hogwarts, and then see if he could sneak in during the chaos.

Coincidentally, while hanging out in Knockturn Alley, Dracula received a tip that someone was selling a dark magic item that could open Hogwarts Castle and the Chamber of Secrets in Slytherin, and so this deal came about...

The next day, Su Yu came to Diagon Alley again and met with Tonks at the Leaky Cauldron. As soon as Tonks saw Su Yu, he smiled and grabbed his arm: "Come on, let's go to Knockdown Alley."

"Go now, what are you planning to do?" Su Yu asked.

"Of course, it's my duty as an Auror to conduct a thorough search of Borginborough Stores!" Tonks said excitedly, waving his little fist. They've been doing this kind of thing quite often lately.

Su Yu was speechless: "That's Knockturn Alley. Do you think the Aurors wouldn't know if they went in? Besides, Borgin & Burke has been open for so many years, do you think they'd be afraid of you searching it?"

The little girl was speechless for a moment, and after humming for a while, she finally said, "Then what do you suggest we do?"

Su Yu looked Tonks up and down: "First of all, you definitely won't look good like this. You're just a little Auror, you can't intimidate Boss Burke at all. You can pretend to be your captain."

Tonks immediately looked disdainful: "No way, Captain Kingsley is just too ugly!"

"Or do you know any other captains of the Auror faction? Someone with a huge reputation, someone whose face alone can intimidate the other side," Su Yu suggested.

“Alright, then Captain Saquina it is, even though I don’t like her!” As he spoke, Tonks grew taller, his face became gaunt and thin, and his hair became messy and unkempt.

Su Yu nodded: "Okay, you hide for a while, I'll go into the Borginburger shop first, and then..."

Listening to Su Yu's instructions, Tonks' eyes grew brighter and brighter. After all, she was still just a twenty-year-old girl, and she was full of curiosity about this special operation plan.

With everything ready, Su Yu put on a large wizard's robe and covered his face with the hood, as if dark wizards all liked to dress like this.

The two walked into Flip-Up Alley one after the other. More than ten years ago, Su Yu had entered Flip-Up Alley once to sell his small inventions.

That experience was unpleasant; Su Yu was almost tricked by an old witch. Fortunately, he was prepared and not only did he suffer no losses, but he also made a fortune.

More than a decade has passed, and the streets of Fandao Lane seem to have remained completely unchanged, with the road so narrow that only one person can pass at a time.

The ground was sticky and covered in an unknown liquid, and there were occasional dark red stains in the corners of the walls, which were probably dried blood.

After turning left and right along the winding alley and forcefully refusing the sales pitches of several corner vendors, Su Yu finally arrived at the Bokinbock store.

Pushing open the shop door, Su Yu saw a wriggling arm on the table with a candle on its palm, which looked quite frightening.

But this is actually just a small tool for stealing, not even a black magic item. Its function is that when you hold this arm, the light emitted by the candle in the middle of your palm can only be seen by you.

Su Yu thought this was a useless gadget; a night vision device could perfectly replace it. He wondered who came up with the idea.

Continuing onward, the shop was filled with a jumble of things: scepters shaped like snake heads, divination tools made from human skulls, and strange masks that made all sorts of expressions.

To a young wizard, this might be a haunted house, but to Su Yu, it was nothing more than a junkyard.

Upon reaching the counter, Su Yu pressed the service bell above. With a crisp sound, a man emerged from behind, bending over as he repeatedly combed the greasy hair hanging down his face.

“Mr. Burke?” Su Yu asked.

“That’s right, it’s me. Is there anything you need? I have everything you need.” Bock glanced at Su Yu and boasted about his products.

Su Yu, however, disagreed: "Are you talking about this trash? Forgive my bluntness, but even a fifth-grade wizard could probably handle this stuff easily. Give me something really good."

Chapter 78 Boginborough Shop (Part 2)

Su Yu's dismissive attitude angered Bock, but as the owner of the oldest and largest shop in the alley, he made no comment, simply asking calmly:

"Excuse me, sir, what kind of props do you need? I can recommend the appropriate products based on your requirements."

Su Yu was prepared. He pretended to look around, then lowered his voice and said, "I want a poison, preferably colorless and odorless, that can kill a person whether ingested or touched."

The shop owner glanced at Su Yu again. The man's hood was pulled down low, making it impossible to see his face, but judging from his voice, he was definitely not a regular customer.

Considering the recent crackdown on dark magic items by the Ministry of Magic, Mr. Burke felt a sense of unease, but he did not refuse, saying:

"I'm sorry, sir, the item you requested is no longer available in our store. If you really want it, please leave your contact information and I will notify you when it becomes in stock."