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

The next moment, Marcus felt a strong nausea and instinctively opened his mouth, spitting out a slug as thick as an arm.

Everyone looked in the direction from which the green light came, and there was Su Yu. He walked over quickly and said, "Pointing your wand at a female classmate in the common room is not a respectable thing to do. Slytherin, deduct 10 points!"

"Professor Su... what brings you here?" Gemma Farley stammered slightly when she saw Su Yu, a blush rising on her fair skin.

Gemma Farley is a proud but not arrogant girl. She has many suitors at school, but she ignores them all, thinking that those young boys are too superficial and immature.

Previously, Snape had always been Gemma Farley's idol, and she believed that her future husband would be a profound and insightful person like him.

Until she met Su Yu, whose handsome appearance, humorous teaching style, and extensive knowledge of alchemy and Muggle studies quickly attracted her.

Su Yu, of course, had no idea that he had stolen Snape's little fangirl. He smiled and said, "I came here specifically to see you. Come to my office with me. I have something to discuss with you."

"Me...me?" Gemma Farley pointed to herself uncertainly, her face turning even redder.

“That’s right, it’s you! Alright, let’s go. You guys, take this guy to Madam Pomfrey.” Su Yu turned around and randomly pointed to a few people.

Su Yu did indeed come to see Gemma Farley. After observing her for a week, Su Yu found that this girl was truly outstanding.

Her magical talent surpassed that of all her fifth-graders, including Percy Weasley, and she was also calm and had a good grasp of the big picture.

Unlike other Slytherins, they are not hostile to Muggles or wizards from Muggle families. They are more open to new things and have strong ambitions.

Most importantly, although the Farley family is not one of the 28 pure-blooded holy families, they have good connections in the British magical world and run some foreign trade businesses, making them very suitable to take on disciples.

Back in his office, Su Yu went straight to the point: "Gemma, I noticed in class that you were very interested in the magic pistol."

Gemma Farley was equally direct, saying, "Yes, Professor, I believe this is a groundbreaking product that, like the wand, will change the landscape of the wizarding world."

"Oh? What do you mean?" Su Yu asked.

Gemma Farley said, “Professor, do you know how many Squibs there are in Britain? Probably more than 3000, or even more. Most Squibs choose to integrate into Muggle society, and only a small number choose to remain in the wizarding world.”

"My uncle is a Squib. He can sense magic, possesses a certain amount of magic, and desperately wants to become a real wizard."

"But unfortunately, he can't cast spells and has become a useless person in his grandfather's eyes. My uncle is very kind to me, and I really hope I can help him. Your magic pistol has given me hope."

Chapter 23 The Centaurs of the Forbidden Forest

Su Yu looked at Gemma Farley with satisfaction in his eyes. A child who knew how to repay kindness could not be of bad character. So he asked, "Do you think the magic pistol can solve the problem of Squirts being unable to cast spells?"

Gemma Farley shook her head and said, "I'm not sure, after all, the magic of Squibs is very weak, and they generally don't reach the level of a first-year wizard."

"According to what you said in class, casting spells with a magic pistol is less powerful than a wizard casting spells by chanting spells himself. Following this logic, a Squib should also be unable to use a magic pistol."

"Oh? Then why do you still have expectations of me?" Su Yu continued to ask.

Gemma Farley thought for a moment and said, "This is one direction. Since your magic pistol can directly convert magic into spells."

"So if... I mean if we could store up magic power and accumulate it little by little, would that allow the Squib to successfully cast a spell?"

Su Yu's eyes lit up. He greatly admired Gemma Farley's idea, because that's exactly what he had done.

Before obtaining the system, Su Yu's magic level was only LV5, which was an awkward level that was neither high nor low. His spell power was already insufficient, and if he used a magic pistol, the power would be even less.

So Su Yu came up with a solution: to add a magic storage and compression device to the pistol grip.

On a daily basis, magic can be continuously input into this device, compressed and stored. When needed, all the magic inside can be released at once and input into the magic pistol along with one's own magic.

Su Yu calls this thing a magic amplifier. It is also used in some magic phones, but the technology is not yet mature and can only store a maximum of six charges at a time.

The amplification effect is only about one level stronger than when you cast a spell at level 5, because the amount of magic stored is limited, and the higher the spellcaster's own magic level, the less effective this thing becomes.

Moreover, the process is complex and the raw materials are relatively expensive. The pistols sold to the Magical Congress of the United States were not equipped with it; it was only on Su Yu's own pistols.

Su Yu, of course, wouldn't tell Gemma Farley about this directly. Instead, he pulled out a copy of "Elementary Alchemy Explained" and said:

"Take this back and study it. At the end of this semester, I will give you an assessment. If you pass, I will take you as my disciple. Then you can study the development direction of the magic pistol with me."

"Don't worry, Professor, I will definitely not let you down!" Gemma Farley was clearly more mature than the Weasley brothers and immediately understood Su Yu's intentions. She picked up the book and said solemnly.

After Gemma Farley left, Su Yu also left the castle and arrived at Hagrid's hut. Su Yu couldn't remember exactly when Quirrell had used the dragon egg to trick Hagrid out of information.

However, he still likes to visit Hagrid's hut from time to time, to check on the coal briquettes, and to pick up some alchemy materials along the way.

Since that day, whenever Su Yu leaves the office, Coal Ball will come to Haige's place and stay until very late. Su Yu can only see Coal Ball when he wakes up in the morning.

Hagrid clearly adores Coalball and prepares plenty of food for it. In just over a week, Coalball seems to have gained weight.

"Hagrid, you can't keep feeding Coalball like this. Getting too fat will slow her down, and for a cat-leopard, slowing down is fatal!" Su Yu stroked Coalball's shiny black fur and said with some concern.

Coal Ball turned its head and growled at Su Yu, roughly meaning: "I'm not fat at all. With my talent, I can lose weight just by going out for a couple of laps."

Hagrid and Coal Ball hadn't established a mental connection, so Hagrid didn't understand her meaning and could only nod: "Okay, Sue, I'll reduce the amount for her appropriately."

Su Yu ignored Coal Ball and continued to guide Hagrid, asking, "Hagrid, are there any magical ores in the Forbidden Forest? My alchemy experiment is stuck, and I need some ores containing spiritual energy."

"Minerals containing spiritual energy? I really don't know about that, but I can ask the centaurs in the forest for you. They know more about the Forbidden Forest than I do."

"Centaur? Why don't you take me with you to meet them? Maybe I can talk to them myself." Su Yu's eyes lit up, and he said excitedly.

Su Yu wasn't just making things up; he had some initial ideas about the magic phone's server and currently needed some mental energy ore for experimentation.

This week, he wasn't just learning Transfiguration; he was also searching for information on it. Eventually, he found a material in a book called "Advanced Black Magic Materials" in the restricted section.

Its name is Moonstone, and it is said to have been formed from the bones of a centaur priest after his death, which were tempered by magic. It is generally regarded as a sacred object by the centaurs.

Hearing Su Yu's request, Hagrid was very resistant, saying, "Su, I'm sorry, the centaurs are also my friends. I can't just take you into their territory; it would harm you."

Su Yu said, "It's alright, Hagrid. You just need to act as an intermediary and make an introduction. I'll discuss the details with the centaurs myself."

"You seem to be certain that the centaurs have what you're looking for?" Hagrid asked skeptically.

Su Yu didn't expect the usually dull Hagrid to react so quickly this time, so he didn't hide anything and said, "Hagrid, have you ever heard of moonstone? As far as I know, every centaur tribe has it, and it might be what I need right now."

Hagrid had never heard of moonstone before, but he was glad that the centaurs actually had what Su Yu needed, and he didn't mind Su Yu's previous guidance at all.

“Alright, I’ll take you there, but we have an agreement: if the centaurs refuse, you must come back with me and you can’t get into a fight with them,” Hagrid stated his conditions.

“No problem!” Su Yu agreed immediately. It wasn’t that he was trying to fool Hagrid. Moonstone was an important material, but it wasn’t irreplaceable. It just took more time.

Carrying lanterns and carrying coal briquettes, the two ventured deeper into the Forbidden Forest. Here, Hagrid felt as if he were back home, introducing Su Yu to every large tree and every magical creature they encountered.

Suddenly, a whooshing sound rang out, and before the two could react, an arrow had already arrived and landed a meter in front of them.

Su Yu immediately drew his wand, but Hagrid stopped him, raised his lantern high, and shouted, "Hehehe, it's me, Hagrid! Don't do anything, we mean no harm."

There was no response from the forest, but instead came a series of chaotic hoofbeats, which sounded like a small cavalry unit moving through the woods.

Before long, six centaurs appeared in their field of vision. This was the first time Su Yu had ever seen centaurs in person, and he had to admit that they were a remarkable race.

Five men and one woman. Their lower bodies were shaped like horses, while their upper bodies were strong human figures. The men were naked, with only some simple leather belts wrapped around their bodies.

The female centaur wore a bodice made of animal hide, which, accentuated by a leather belt, looked wild, large, and muscular.

They also had bags hanging from their belts, containing their everyday weapons such as spears and bows and arrows.

These centaurs were very different from the centaurs Su Yu had seen in movies in his previous life. They were not ugly at all; on the contrary, they were quite beautiful.

Standing at the very front were a man and a woman, both with pure white body hair, fair skin, and long blond hair. The man was handsome and dashing, while the woman was curvaceous...

Unable to see what was behind him, Su Yu's eyes followed his thoughts, and he couldn't help but look towards the female centaur's rear end. Before his transmigration, there seemed to be a movie called "Vulgar Comedy," which described a sport called "slapping a mule's buttocks"...

What am I thinking?! Su Yu quickly pressed his wand against his temple and pulled hard, drawing out a yellow veil of memories, which he then discarded like waste.

At this moment, the strongest, blond centaur stepped out of the group. His face was stern, and he questioned Hagrid:

"Hagrid, you have broken our agreement by bringing outsiders into our centaur territory. Do you want to start a war with us?"

“Frenzer, my friend, don’t be so nervous. This is Su Yu, a professor at Hogwarts. We mean no harm. He has something he’d like to discuss with you,” Hagrid said, pointing to Su Yu beside him.

Ferenze glanced at Su Yu, then at the coal ball beside him, who was ready for battle, and said:

"Your magical creature companion is very powerful. To gain her approval shows that you have great respect for nature. So, what do you want to talk about?"

Su Yu didn't rush to speak, but slowly reached into the seamless extension bag at his waist and pulled out a worn crown.

Su Yu held the crown high and slowly walked towards the centaur squad. After walking about twenty meters, he put the crown down and returned to Hagrid's side.

"What's that?" Hagrid approached Su Yu and asked in a low voice.

“Chiron’s crown,” Su Yu said.

Hagrid looked puzzled: "Who is Chiron?"

Su Yu was somewhat speechless and said, "Do you know the Centaurus constellation?"

Hagrid nodded: "Of course I know!"

Su Yu said, "In ancient Greek legend, Chiron was the most intelligent centaur. After he was killed, he became the constellation Centaurus in the sky."

"So he's the Merlin of the centaurs?" Hagrid exclaimed in realization.

Su Yu was speechless and could only say, "Of course you can understand it that way too."

As the two were talking, Ferenczer had already reached the crown, picked it up from the ground, and quickly noticed something was wrong with it, asking:

"Professor Su... Professor Su Yu, may I ask where you obtained this crown?"

Su Yu didn't hide anything and told the truth: "On the other side of the ocean, there is a country called the United States. I bought this at an auction in the Muggle community in the United States."

"Why would it appear in that... America?" Ferenczek continued to press.

Su Yu shrugged: "Sorry, I'm afraid I can't answer your question, because I don't know either. It seems that some Muggle accidentally dug it up in a tomb."

After thinking for a moment, Ferenze bowed to Su Yu and said, "Thank you for returning it to our centaur tribe. You will gain the centaur tribe's eternal friendship."

Su Yu suddenly laughed, revealing a set of bright white teeth: "Forget about friendship. In fact, I want to use it to make a deal with you."

Ferenze was taken aback. He hadn't expected the human opposite him to reject the friendship from the centaur. He frowned and asked, "What do you want?"

"It's simple, a moonstone!" Su Yu finally revealed his purpose.

Upon hearing about the moonstone, Ferenze wasn't too surprised, since the item he possessed was far more valuable to the centaurs than the moonstone.

But the centaurs in the distance were different. They didn't know what the crown was. When they heard that Su Yu wanted the tribe's sacred object, they became agitated, raised their hooves high, and fired several arrows at Su Yu's feet.

"Stop! All of you, stop!" Ferenze reacted immediately, turning around to stop the centaurs behind him.

Then he turned to Su Yu and said, "Professor Su, I can't make the decision on this matter. Could you let me take this item back to the tribe? On the one hand, we need to confirm whether this thing is real, and on the other hand, we also need to discuss whether we can give you the moonstone."

"Of course, the centaurs have always been very trustworthy, haven't they?" Su Yu casually flattered the other party.

Legend has it that Chiron's crown can help centaurs better observe the stars and make prophecies; it is a sacred object of the centaur race. However, for Su Yu, it is just a collectible.

Su Yu bought it back then mainly to study the alchemical runes and alchemy techniques on it, but it seemed to be a different system from wizard alchemy, and he didn't get any results from his research.