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

"Oh... I see. What I mean is, I haven't agreed to borrow your necklace yet," Tonks said awkwardly, her hair turning purple.

"Alright, hurry up and pull your hair up, I'll put it on for you," Su Yu urged.

Tonks' mind was a little blank at the moment, and she did not refute. She obediently lifted her hair and let Su Yu put the necklace on her. However, her hair, which kept changing color like the breathing light of a Razer mouse, showed the turmoil in her heart.

Tonks had a long, white, and beautiful neck. When Su Yu put the necklace on her, he could smell the fragrance of her hair and the faint milky scent on her body.

When your fingers brush against her fair neck, a blush immediately appears, which is quite adorable.

The process of putting on the necklace took less than a minute, but it felt like a year had passed. Strangely enough, she even had a faint hope that the time could last longer.

After putting the necklace on Tonks, Su Yu added, "Alright, even though you have this, you still can't be careless. Take good care of yourself!"

"I...I understand!" Tonks lowered his head, unsure of what to say.

Su Yu stopped teasing her and said, "Alright, you go ahead with your work. I'm going to take another look around. Message me anytime if anything comes up."

To ease Tonks' embarrassment, Su Yu left the Three Broomsticks Bar and headed to the Pig Head Bar on the other side of the village.

Compared to the bustling atmosphere of Three Broomsticks, Pig Head Bar seemed rather deserted. From afar, Su Yu saw a man in black, wearing a wide hood, sneaking into Pig Head Bar.

However, the distinctive headscarf under the hood already revealed the identity of this man in black, who should be Quirrell, the current Defense Against the Dark Arts professor at Hogwarts.

Since Quirrell is here, could the guy who stole the dragon egg also be here? Out of curiosity, Su Yu came to the outside of the Pig Head Bar.

However, he did not enter the bar. Instead, he sent out another scout guard. Its eyeballs immediately went invisible, and its dark red antennae, like spiders, crawled through the window into the Pighead Bar.

Su Yu himself walked into a shop opposite the Pig Head Bar, clicked on the side bar of his glasses, and shared the reconnaissance guard's field of vision.

Soon, the scouts found Quirrell, who was sitting in a box opposite a thin wizard with a scar on his face.

"Did you bring everything?" Quirrell asked, but his demeanor was completely different from his timid self at school; it was now filled with ferocity.

The skinny wizard opposite him sneered: "Did you bring the money? I risked my life on this trip. In addition to the 2000 Galleons we agreed on, I want an extra 500."

Quirrell's face immediately darkened, and he said, "Trying to raise prices on the spot? I think you're asking for death!"

"Heh, I'm not afraid of you. If you're confident you can keep me here, then go ahead and make your move. But if you can't keep me here, your identity won't be able to be hidden anymore." The skinny wizard was not afraid at all and mocked.

“You…” Quirrell gritted his teeth, but after only five seconds of hesitation, he pulled out a small, infinitely expandable pocket from his pocket and tossed it to the person opposite him.

The skinny wizard counted the gold coins, and after confirming there was nothing wrong, he took out a box from his pocket, which was clearly also enchanted with a Seamless Stretch Charm:

"The troll, dragon egg, and high-grade health potion you requested are all included. 2500 Galleons, absolutely great value. Is there anything else you need?"

As expected, these are the things. The dragon egg is probably meant to extract information from Hagrid, while the troll is meant to attract the attention of the professors at the academy.

Unexpectedly, Quirrell had already made thorough preparations from the very beginning of the semester. As a result, Su Yu felt that he might be able to try his hand at it and see if he could have the chance to witness the legendary pinnacle of alchemy, the Philosopher's Stone.

Just as Su Yu was secretly calculating, Quirrell seemed to have noticed something in his field of vision. He turned his head, glanced in the direction of the scout guard, and then took out his wand and cast a cutting spell.

Su Yu was startled; he had been discovered. Seeing that the scout guard was about to be hit by the curse, Su Yu decisively chose to make it self-destruct.

The Dark Lord had seen the original version of the scout ward. Although it has now been updated to version 8.0, the appearance has not changed much. If he is seen, he will be exposed.

With a pop, the scout guard's eyeballs burst open, spewing out a large packet of thick, green acid that shot towards Quirrell and the skinny wizard.

Quirrell was prepared and used his armor to block all the acid, but the skinny wizard was in trouble. He didn't even have time to draw his wand and could only use his hands to block it.

However, this corrosive slime was carefully prepared by a famous American potion master at Su Yu's request. It contains the stomach fluid of the snake bird, the venom of the poison leopard, the venom of the eight-eyed spider, and so on. It is not only extremely corrosive, but also extremely toxic.

The moment they made contact, the skinny wizard's arm began to sizzle and emit white smoke. His skin and flesh peeled away inch by inch, revealing the white bone underneath, and the corrosion continued to extend upwards along his arm.

The skinny wizard was decisive. Seeing this, he took out his wand and cast a cutting spell, severing his own forearm to stop the corrosion from spreading.

Even so, it was too late. Although the corrosion had been cut off, the toxins had already entered his heart through his blood vessels.

The skinny wizard began to have difficulty breathing, and his skin started to turn green. He cast two spells on himself to try to cure the poison, but to no avail.

Then the skinny wizard frantically pulled out a seamless stretching pouch, rummaged through it, found several bottles of potions, and hurriedly poured them into his mouth.

But before he could swallow the medicine, he lost consciousness and never woke up again.

Quirrell was both shocked and furious at the sight. He wanted to try to save the skinny wizard again, or perhaps get his Galleons back.

But the one behind his head seemed to be constantly urging him to leave; for the Dark Lord, not being exposed was the most important thing.

Quirrell hesitated for two seconds, then finally waved his wand, used Apparition, and left the Hog's Head pub.

Su Yu hadn't expected that a scout guard could be so effective, directly taking down a dark wizard.

He strode to the Pig's Head Bar, entered the private room, and searched the skinny wizard's body for any traces of his stretching pouches.

There are quite a few good things here. There are over five thousand Galleons alone, as well as some magical animal materials, magical ores, and herbs.

As the saying goes, "A man can't get rich without windfall gains, and a horse can't get fat without night grass." No wonder many fantasy novels are full of scenes of killing and robbing treasures. It's cliché, but it's also really exciting.

After taking the seamless stretcher away, Su Yu also took out some dark magic items from it and stuffed them into the skinny wizard's body.

Then Su Yu took out his phone and sent a message to Tonks: "I think I've run into the dark wizard you're looking for. He's in VIP room xx at the Pighead Bar. Come quick."

In just three seconds, Tonks replied, "Don't make any rash moves. Protect yourself. We'll talk about everything when we get here!"

Chapter 20 Expanding Ambition (4.4k)

At the Pig's Head Bar, Tonks examined the short, skinny, nameless dark wizard on the ground, then looked at Kingsley beside him and said:

“That’s right, it’s him, but he has nothing on him except a few dark magic items, and we didn’t find the dragon egg either.”

Kingsley glanced at Su Yu beside him and asked, "Professor Su, how did you discover him?"

Su Yu said, "I was just wandering around the village when I sensed a strong magical fluctuation, so I came to check it out. When I came in, this guy was already dead, and it seems that someone else just left here using Apparition."

"Intense magical fluctuations? How did you sense them?" Kingsley still had doubts about Su Yu.

Wizards are indeed more perceptive than Muggles, but only extremely powerful legendary wizards can sense strong magical fluctuations. Clearly, this kid doesn't seem to be a legendary wizard.

Su Yu replied nonchalantly, "If you know enough about the intelligence, you'll know that I'm an alchemy master, and an alchemy master always has some interesting little gadgets on him."

Kingsley agreed with this, because he often saw his subordinate Tonks chatting with the man in front of him using a small square box.

Kingsley was very envious of this little box. Until now, he could only communicate with his friends through owls. It would be wonderful if he and his friends could also have such a box.

Therefore, Kingsleigh didn't doubt much what Su Yu said. Even if he didn't agree, there was nothing he could do. Su Yu had diplomatic immunity and Dumbledore's protection, two things he couldn't contend with.

Kingsley then changed the subject, saying, "Professor Sue, have you seen any other suspicious individuals?"

Su Yu said, "Yes, I saw a wizard wearing a large black cloak sneaking into the bar, but he was wearing a big hood, so I couldn't see his face."

Next, Su Yu gave a detailed description of the black-robed wizard's physique and characteristics, without directly exposing Quirrell's true colors.

Firstly, although his magical level has improved, it is still far from that of the Dark Lord, and he does not want to confront the Dark Lord directly for the time being.

Secondly, he needs the Dark Lord to complete tasks, and he also needs the Dark Lord's cooperation to realize some of his future plans.

After finishing their questioning, Kingsley and Tonks quickly returned to the Ministry of Magic with the dark wizard. Before leaving, Tonks winked at Su Yu, but Su Yu couldn't quite understand what she meant.

Su Yu arrived at the bar's front desk. Despite the major incident that had just occurred, the bar owner hadn't come over at all; he was quite composed.

He was still busy with his own things. He was tall and thin, with a head of messy, long hair, and wearing dirty clothes that hadn't been washed in a long time. It was hard to imagine that this was Albus Dumbledore's brother.

Su Yu didn't talk much with Abu Fors. He just silently drank a glass of wine and then got up and left.

Back at Hogwarts, Su Yu first went to Snape's office. Snape was not idle on the weekend either, as he had to prepare the magical materials for next week's teaching.

"Little Prince, what are you busy with? Help me look at these things," Su Yu said with a grin as he entered.

Upon hearing the title "Little Prince," Snape felt another wave of shame wash over him. He glared at Su Yu with his deadpan eyes, as if to say: If you dare call me that again, I'll die right here!

Su Yu waved his hand helplessly: "Fine, fine, you chose this name yourself, but you don't want others to call it that. You really didn't bother choosing it."

"If you have nothing else to do, get out of here and don't disturb my work!" Snape growled, his patience finally snapping.

Su Yu took out several bottles of potions from his seamless extension bag and asked, "Help me see what these potions are and how much they're worth."

The potions were naturally obtained from that skinny, dark-skinned wizard, but with Su Yu's LV3 potion-making skills, he really couldn't assess the efficacy and value of these potions.

Snape hesitated for a moment, then walked to the table, casually opened a bottle of potion, sniffed it, and asked in surprise, "Where did you get this?"

Su Yu didn't explain much, saying, "Today in Hogsmeade Village, I encountered two dark wizards fighting each other. One died and the other escaped, so these things are now mine."

Snape said, "You really got lucky. This is a Transformation Potion, a bit like Polyjuice Potion, but it turns you into an animal for a while."

Then Snape picked up the second bottle, smelled it, and said, "Felix Felicis, you've heard of it, haven't you?"

The third bottle: "An antidote. It can neutralize almost all toxins in your body within five minutes of drinking it, but the effect only lasts for five minutes. If you are poisoned again after five minutes, you will still die."

……

Seven bottles were opened in succession, all of them extremely precious magical potions. Su Yu became more and more excited as he listened, and finally couldn't help but ask, "How much are these potions worth?"

"Are you short of money? Although the method of brewing these medicines is clumsy, the effect can still reach more than 70%. If you are not short of money, you'd better keep them. They might save your life in a critical moment!"

Snape was really good at making seemingly caring remarks sound incredibly sarcastic and irritating.

However, Su Yu decided not to listen to Snape's advice and insisted, "Sell these for me. If I need them, I can just ask you to make more. Anyway, your skill level is definitely higher than these."

Snape was clearly pleased with Su Yu's compliment, a slight smile playing on his lips, but his words remained disdainful as he refused:

“I will absolutely not sell such inferior medicine, lest it damage my reputation.”

"Alright, alright, I'll keep them for myself then. These herbs are for you, I have no use for them anyway." Su Yu reluctantly put away the potion, and then threw some herbs that he didn't need into the bag to Snape.

Snape glanced through them casually, a hint of delight in his eyes, but he said, "It's a waste to leave these things in your hands. Your choice is wise. I'll share some of the potions you make with you."

Su Yu had been used to Snape's way of speaking for twenty years, so he stopped dwelling on the herbs and instead asked, "I heard that you and Harry Potter didn't get along very well."

Upon hearing Harry's name, Snape's expression stiffened for a moment, then he said, "Our savior is just like his father, foolish and self-important."

Su Yu chuckled and said to Snape, "I think this kid is quite polite, quite different from that arrogant Potter. And his eyes are very similar..."

"That's enough. Go back now if you have nothing else to do. I have a lot of things to do today." Snape suddenly raised his voice, stopping Su Yu from continuing.

"Don't be like that, Snape. I actually have something to ask you. Don't you think something's strange about the school?" Su Yu asked.

"No, you're the strangest person in the school. Why did you come to my Potions class with those first-year students? Don't you know how bad your Potions talent is?" Snape retorted mercilessly.

Su Yu was momentarily speechless, and said irritably, "It's precisely because I lack talent that I need to study more. Considering how humble I am in asking questions, shouldn't you praise me in class?"

"Ha! Impossible, absolutely impossible. With the garbage potions you brew, you'll never get any praise in my class," Snape sneered mercilessly.

"If you don't praise me, I'll go to every class and cause trouble in your class!" Su Yu was shameless and completely reckless.

As it turns out, people do laugh when they're really angry. Snape laughed at this moment, but his smile was rather ugly, even a little creepy.

"Alright, alright, I have something important to tell you. Don't you think Headmaster Dumbledore is fishing for us?"