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

Hagrid shook his head and said, "They haven't sent me any messages, but centaurs always keep their word. If we go to the place where we discussed things last time, they will definitely come."

So Hagrid, Su Yu, and Coal Ball returned to the place where they had met the centaur last week. In the Forbidden Forest at night, all sorts of strange noises could always be heard.

"If the centaurs break their promise, it shouldn't be too much for me to go to their door, right?" Su Yu joked with Hagrid.

“It’s not unreasonable, but I don’t recommend you do that unless you have the same strength as Professor Dumbledore,” Hagrid said frankly.

Su Yu disagreed. Perhaps he couldn't defeat a centaur tribe, but with his alchemical tools and coal briquettes, he was confident he could take a moonstone from them and teach them a lesson.

Fortunately, it didn't take long for the centaurs to appear. It was the same group as before, led by Ferenze again. He stepped forward and said:

"Professor Su Yu, thank you again for finding the centaur's sacred object for us. The Grand Elder has also agreed to exchange it with you for a moonstone, but the centaur's friendship remains with you!"

As he spoke, Ferenze stepped forward and handed over a wooden box. Su Yu opened it and saw a fist-sized, milky-white stone inside, its surface gleaming softly like the moon.

Besides the moonstone, there was also a leather bracelet inside, which should be considered a free gift. Su Yu put away the moonstone and put the bracelet on his wrist.

Seeing Su Yu's actions, the centaurs were clearly pleased. Ferenze said, "We're glad you like it. This is our centaur's token. If you need us in the future, you can use it to enter our tribe."

It turned out it wasn't just a free gift, but also a token of affection. Su Yu nodded: "Okay, thank you very much!"

Having obtained what he wanted, Su Yu didn't want to stay a moment longer. He had only one thought in his mind: to immediately return to his office and begin researching the moonstone, so as to develop the network server as soon as possible.

Time passed slowly, and Su Yu's project was progressing steadily. A month later, Su Yu finally saw that his Transformation ability had increased from LV4 to LV5.

This period of time may seem short, but only Su Yu himself knows how difficult it was. For more than a month, he has spent at least 4 hours every day learning Transfiguration.

Of course, this is not the key to Su Yu's improvement. There are many people who can spend four hours a day learning Transfiguration, but most of them, even in their entire lives, will not be able to achieve this breakthrough.

What truly enabled Su Yu to successfully break through was his increased magic power and spellcasting skills, both reaching LV7. One provided the foundation for Su Yu's breakthrough, while the other provided the technical details.

If Su Yu's system were to suddenly disappear at this moment, he could spend ten or twenty years learning to push his Transfiguration to LV7 or even LV8.

Therefore, for a wizard, the total amount of magic power he possesses and the level of magic power control he has are the upper limit of his achievements.

Su Yu certainly couldn't wait ten or twenty years. He still had two general skill points. After hesitating for a moment, he directly added Polymorph to LV6.

In this way, as long as he successfully gains Professor McGonagall's approval, he can obtain a special skill point and upgrade his Transfiguration to LV7.

In the last week of October, Su Yu arrived early in the morning with the young Gryffindor wizards for Professor McGonagall's Transfiguration class. Hermione, like a chattering little sparrow, followed him around.

"Professor Su, you haven't attended any other professors' classes in a long time. Why are you suddenly teaching a transformation class today?"

Su Yu said, "As you know, I've been studying Transfiguration lately. I didn't come before because I felt I hadn't made any progress. I'm here today to show Professor McGonagall my recent learning results."

At this moment, Malfoy, who was passing by, also heard Su Yu's words. Having gone without being punished for about a month, his courage had grown again. He whispered to Crabbe and Goyle beside him:

"Have you heard? At the beginning of the semester, Professor McGonagall said that some people haven't made any progress in over a decade, and she doesn't know how they still have the nerve to come to Professor McGonagall's class."

"Hahaha..." The three of them burst into laughter. Su Yu glanced over there, and Malfoy quickly pretended nothing had happened and slipped into the classroom.

Upon entering the classroom, the students were already seated quietly. A tabby cat was perched on the podium, looking down at the students with a serious expression.

What an exquisite Animagus transformation! When Su Yu was at level 4 in Transformation, he couldn't understand the wonder of this profound transformation technique at all.

But now that his Transfiguration has reached LV6, well... I still can't understand it.

Professor McGonagall naturally noticed Su Yu as well. She lunged forward, transforming into human form in mid-air, and stood before Su Yu, asking:

"Professor Su, is there anything I can help you with?"

Su Yu waved his hand: "No, it's just that I've been learning Transfiguration recently and have made some progress, so I wanted to come and listen to your lectures again."

Professor McGonagall's eyes softened: "Oh, child, I should apologize for what I said last time. Mrs. Pince told me that you've been studying Transfiguration in the library every day for the past month or so. Feel free to ask me any questions after class."

"Thank you, Professor McGonagall!" Su Yu gave her a simple bow and then went to the last row of the classroom.

Nearly two months into the school year, most Gryffindor students had learned the most basic trick of turning matches into needles, except for Neville and Seamus.

Neville can only complete half of the transformation, while Seamus will blow up the match. Su Yu immediately noticed the child. In his memory, no matter what magic Seamus cast, it would always end up as an explosion spell.

This suggests that the child's magical attribute is most likely explosive, and perhaps he could be taken as a disciple and trained to become the Deidara of the Harry Potter world.

Today, Professor McGonagall will talk about a larger transformation, turning a glass into an axe.

There are two difficulties in this transformation. First, the glass cup is larger, requiring more magic power and more delicate magical control.

Secondly, the composition of an axe is much more complex than that of a needle. The handle is made of wood, while the blade is made of metal, requiring the caster to perfectly control the distribution of the two.

This is the opposite of turning a match into a needle, where two substances are transformed into one, while turning a glass into an axe is the transformation of one substance into two.

They may seem similar, but the difficulty level has increased significantly. Professor McGonagall explained it in great detail, analyzing every single aspect. Even Su Yu, now, still gained something from listening to her.

After most of the class was spent on theoretical explanations, it was time for practical exercises. This time, all the students failed. Even Hermione, the top student, could only conjure up an axe handle without any trace of metal.

Su Yu walked over to Hermione and said, "Hermione, don't rush. Instead of trying to succeed on the first try, you can try conjuring up a wooden stick shaped like an axe, like this."

Su Yu waved his wand, and the axe handle on Hermione's table turned into a wooden axe, except that it was a single piece of wood, with the axe head and handle still attached.

Su Yu continued, "Then separate the axe head and the handle, like this."

Su Yu waved his wand again, and the wooden axe on the table, just as Su Yu had said, had begun to take shape.

Su Yu said, "The final step is to turn its axe into metal! Like this, we're all done!"

With the final swing of Su Yu's wand, an axe was perfectly displayed on Hermione's table.

Su Yu swung his cane again, and the axe on the table turned back into a glass. He said, "Next, we'll combine these three actions into one: Transfiguration."

As he chanted the incantation, the cup on the table changed again, but this change was very slow, a continuous presentation of the three steps from before.

Professor McGonagall watched the whole process from the sidelines; as the saying goes, the layman sees the spectacle, while the expert sees the details.

To the young wizards, Su Yu had simply broken down the process of turning a glass into an axe into three steps, which was nothing special.

But Professor McGonagall disagrees. First of all, the idea is excellent, greatly reducing the difficulty for young wizards to learn.

Secondly, Su Yu's control over magical power and the precision of its changes were excellent with each spell he cast, making him a completely different person from the guy who turned into a needle at the beginning of the new semester.

Especially the final, slower version of the Transfiguration Charm, which requires far more than just simple magical control and understanding.

Professor McGonagall believed this must be the result of Su Yu's hard work over the past two months, so she led the applause:

“Very good, very good! Professor Su Yu’s demonstration and method are perfect. In your subsequent practice, you can try to follow Professor Su Yu’s method, which will help you master the skills more quickly.”

Just as Professor McGonagall began to praise him, a system notification appeared. Unlike the side quests he had completed before, this time, half of Su Yu's achievement was genuine, accomplished through his own learning and hard work, which gave him a sense of accomplishment.

After class, Su Yu chatted with Professor McGonagall for a while and asked her some questions about Animagus transformations.

Professor McGonagall answered all the questions, but before leaving, she solemnly reminded him:

“Su, your transformation magic has indeed improved a lot in the past two months, but you are not yet at the level where you can perform Animagus transformations.”

"That is a dangerous and deadly spell, and countless monsters have been created by it throughout history."

"Promise me, child, if you really intend to study it, please make sure it is evaluated by me or Professor Dumbledore before you finish it, okay?"

It must be said that Professor McGonagall is truly a kind, sincere, and even perfect professor; she fulfills all our fantasies about a good professor.

Su Yu nodded: "Don't worry, Professor McGonagall. I will never try this magic lightly before I am sure. I value life more than you think."

After ending the chat, Su Yu couldn't wait to return to his office, lie on his bed, and level up his Polymorph skill to LV7.

As before, a flood of knowledge rushed into his mind, and many advanced theories and details about Transfiguration were presented to Su Yu.

Fifteen minutes later, Su Yu got out of bed. Based on his previous experience upgrading Spellcasting, Dark Magic, and Defense, LV7 was a watershed moment for a skill. After reaching LV7, one would have a completely new understanding of the skill.

For example, Su Yu at this moment, before reaching LV7, looked at Professor McGonagall like a frog in a well looking at the moon. Although he felt that the moon was very high, it was only a little bit high. He felt that he could reach it if he worked hard.

After reaching LV7, Su Yu looked back at Professor McGonagall as if he were an ant gazing at the blue sky; the enormous gap even made him feel somewhat terrified.

Based on his current knowledge, Su Yu judged that he could begin to study Animagus transformation, but the success rate was probably less than 30%. To ensure a success rate of over 70%, he would need to be at least LV8.

Professor McGonagall's natural and fluid transformations are definitely beyond what a Level 9 could achieve. No wonder she is the second best Transfiguration user in the Harry Potter world; she's truly skilled.

I recall the scene of turning into a needle in the Transfiguration class on my first day of school, and the smug look on my face as I craved praise.

Su Yu was extremely embarrassed. Some things, you really need to have a certain level of knowledge before you realize how ridiculous it is to try to teach someone a lesson.

Chapter 28 Summary of the Protagonist's Current Abilities

The protagonist's current abilities

Magic Power: 5+2 (Chapter 7)

The Curse: 4+3 (Chapter 19)

Dark Magic and Defense: 3+4 (Chapter 19)

Transfiguration: 4+3 (Chapter 27)

Potions: 3

Herbalism: 5

Alchemy: 8

Flight Techniques: 3+1 (Chapter 25)

1 general skill point, 1 spell-specific skill point

Here are some combat power settings for easy comparison.

Ordinary Auror: Magic Power ≥ LV7; Spells, Dark Magic, Defense, and Polymorph ≥ LV6, with at least one of these ≥ LV7 (e.g., Tonks).

Elite Auror: Magic Power ≥ 8; Spells, Dark Magic and Defense, Polymorph ≥ 7, with at least one of these ≥ 8 (e.g., Kingsley).

Legendary Auror: Magic Power ≥ 9; Spells, Dark Magic and Defense, Polymorph ≥ 8, with at least one of these ≥ 9 (e.g., Mad-Eye).

I've been thinking about this book for quite a while. I really love the Harry Potter story. I finished reading the book when I was in school, but I've forgotten a lot of it.

I went through the book and the movie again this time, and I still want to write an interesting story.

In my own imagination, the protagonist is just an ordinary person like us who transmigrated and has a good talent for alchemy. He makes some small achievements by taking advantage of his way of thinking.

Essentially, he is still an ordinary person. As a time traveler, he is afraid of death and avoids danger, yet he also wants to use his precognitive advantage to gain some benefits for himself. He is moral, but not very moral.

But having already transmigrated once, who would willingly settle for mediocrity? So when the system arrived, all the dreams he had and the boasts he had made back then had the chance to come true.

I hope that as the protagonist uses the system to climb higher, he will also experience some growth in his personality. For example, through his interactions with Harry, Hermione, Tonks, and others, he will gradually learn to love others and acquire things that he must protect with his life.

Haha, of course these are just my own thoughts. My abilities are limited, and I'm not sure if I can actually write them down. I hope everyone will support me, read them, and vote for them.

Chapter 29 Halloween Eve