The Magical Principles of Natural Philosophy at Hogwarts

Ordinary campus life began.

Erwin still maintains the habit of running in the morning. Although this can only have a very small effect on improving his physical fitness, it allows him to clear his mind and make a trip to the owl loft.

Occasionally I would meet Hagrid by the lake, and Erwin would always say hello, "Good morning, Mr. Hagrid."

It was his habit to be polite to everyone, even if the other person was a hybrid giant.

Hagrid responded to him quite happily, "Are you Harry's classmate?" he asked once.

It seemed that the Boy Who Lived would always receive preferential treatment from all kinds of people, Erwin was not surprised. He nodded and told Hagrid his name.

But not everyone responded as positively to his politeness as Hagrid did. Erwin soon discovered that quite a few students would not even express the most basic kindness to him, and this was obviously because of his

Hermione was born as a Muggle. Similarly, Hermione, who showed great talent in learning, still has few friends.

It's not just Slytherin students who have the superiority complex of pure-blood wizards, but only they show it unabashedly.

According to the thoughts of a certain great man in Erwin's memory, objects that can be united and those that cannot be united must be distinguished, so Erwin began to understand all the students at Hogwarts who were born in non-magical families. This was not a difficult task.

, because there are only forty-six people in total, less than one-tenth of the total number of people in the school.

Through the rosters of various subjects, Erwin soon knew the names of all forty-six people. He recorded them and sent them to Professor Stewart.

"Let Uncle Felwood investigate the families of these students."

In the past few years, in order to help Erwin determine whether there were S.H.I.E.L.D. mutants in the world, Felwood had become a major patron of several international investigation organizations. It is not difficult for those professionals to investigate these British students.

, even if they have the same name and surname, they only need a little investigation.

Erwin encountered some setbacks in the learning process he set for himself. The Armor Curse, Stop Curse, and Cleansing Curse were all no big problems. As time went by, his understanding of these three spells gradually deepened. However, for the Disguise Curse,

This was the highest priority spell among the spells given to him by Dipper, which allowed the caster's body to be penetrated by light to achieve optical invisibility. However, Erwin's learning progress was very slow.

The reason is that he does not have the objective conditions to practice this spell.

It is not difficult to imagine that you can become invisible, but if you want to master a spell, the release and control of the magic power when using this spell must reach the level of muscle memory. This process is limited by talent, and it must be practiced many times to improve your proficiency.

Spend.

However, the level of the Illusion Body Curse is higher than Erwin's imagination. With his current magic level, he can only use the magic spell four times at most. Regardless of whether the spell is successfully cast, it will consume magic power, and he has previously tested that his magic replenishment time is

Five hours, and he also needs to practice three other spells.

Erwin asked Professor Flitwick and learned that the Disillusionment Curse was actually a special spell for Oro. As a member of the Ministry of Magic dedicated to fighting against dark wizards, Oro was equivalent to a regular army.

It turned out to be a military spell. No wonder, the series of spells given by Dipu were probably of the same nature as the Disappearance Curse. This shows how much effort he had made to survive.

"It's useless for you to ask about this now, don't be too ambitious." When sending Erwin away, Flitwick had no idea that the student in front of him was secretly practicing the Disguise Charm.

It's just that the magic power is insufficient, which is actually easy to solve. Erwin has only used a little of the full jar of the Fountain of Power. The only question is whether it is worth it.

Erwin thought about it again and again, and finally made up his mind. Can a product that has been melted for two thousand galleons still be kept as a collection?

It was difficult to control the dosage of the Fountain of Power when drinking it directly, so Erwin asked the Weasley twins to bring him a large bottle of pumpkin juice when they sneaked into the kitchen to find a midnight snack at night, so that they could dilute the Fountain of Power before drinking it.

He switched to tea in a few days because drinking too much sweet pumpkin juice really made his stomach bloated.

The Fountain of Power extracted from one galleon is almost enough for Erwin to use the Disguise Curse once. This may be the most extravagant practice method in the entire magic world.

Two weeks later, Stuart sent a reply to Erwin, which was a stack of documents. Erwin didn't take it out until late at night when his roommates were asleep. The document contained the family backgrounds of forty-six Muggle students.

Nothing is left out.

After reading it carefully, it turned out that as Erwin expected, most of them were from lower-class families. Middle-class families like the Grangers were almost the upper limit. Two students were even orphans and returned to the orphanage every year during the holidays.

He immediately began to write a reply, asking Felwood to provide unconditional self-help to these families in the name of a Wizarding Aid Foundation. "Don't make any demands on them, and don't reveal any information about us," Erwin wrote in the letter.

: "As long as they know that we have nothing to do with Hogwarts and the Ministry of Magic, we are a voluntary non-governmental organization. All funding cannot be stopped without my order."

Young wizards are not allowed to use magic while they are away from school, but it is difficult for the Ministry of Magic to control children from wizarding families, so this ban almost only affects students who live with Muggles. These young wizards have no way to use magic to improve their families.

life, so not many people would refuse unconditional pound funding.

And getting them to accept funding is Erwin's only purpose.

Some seeds can be planted before the ice and snow melt, so there is no need to worry about when they will germinate.

In the fourth week of Potions class, Professor Snape stood in front of Neville's desk, his hawk-like gaze piercing Neville like a dagger. The poor round-faced boy was extremely scared and nervous.

My hands are trembling.

The final result is as you can imagine. What should have been a purple liquid turned into a gray viscous substance, and Neville's face looked even grayer than the mass in his pot.

Snape shook his head contemptuously, "Zero points, Longbottom. I take back my previous evaluation. You are not imbecile, but useless."

The Slytherin students laughed loudly, and Malfoy's expression was especially exaggerated. Although the Gryffindor students showed angry expressions, they were helpless. They had tried some before, but students could not fight against a professor. Any

Anyone who speaks for Neville will get points deducted.

Neville's face was ashen, and he knew that no one could help him at this time.

However, at this time he heard a clear and powerful voice, "Professor Snape, I don't think this is Neville's own problem."

Everyone looked at the speaker in shock. Erwin was sitting there with a calm expression.

Hermione winked at him desperately, but Erwin didn't seem to notice.

Snape came closer and looked at him condescendingly, "When did I allow you to speak, arrogant Frost?"

"From the first lesson, you started bullying Neville and allowed Slytherin to slander and ridicule him. This is not the behavior a professor should have at all."

"Five points from Gryffindor." Snape said expressionlessly.

"Neville's grandma has every reason to complain to Principal Dumbledore about you. You are destroying her grandson."

, "Five points from Gryffindor," Snape sneered, "What? Am I responsible for Longbottom's imbecility?"

"Neville is not without talent, Professor!" Hermione couldn't help but screamed: "He is the best student in the Herbology class!"

Snape gave him a stern look, "Shut up, Granger! Another five points from Gryffindor!"

Harry, Ron, and other Gryffindor students all had twisted and weird expressions. They were happy that someone stood up to Snape, but this warrior had already deducted fifteen points from Gryffindor.

It looks like more deductions will be made.

"Herbalism and Potions are two subjects that are closely related," Erwin looked directly into Snape's eyes. "There is no reason to say that he is excellent in Herbology but very bad in Potions. So it is obvious.

, this is all your problem, professor."

There was a commotion on the Slytherin side, and someone could faintly hear someone whispering "Mudblood". Snape suddenly raised his hand, "Quiet!" he shouted.

"Very good," he then looked at Erwin, "Do you think you are so capable that you can tell me what to do?"

"Only in terms of teaching, to be honest, you are really not a good teacher, Professor."

Hermione covered her mouth, she couldn't imagine that someone would dare to talk to the teacher like this.

"Let's do this. If you think I'm not a good teacher, then you'll teach Longbottom." Snape's tone was cold, and he walked back to the front of the classroom. "I heard that you don't go to many classes, so in the future,

Neither you nor Longbottom are coming to Potions class."

"This seems to be a good solution." Erwin nodded, he seemed to take it seriously.

This time, not only Gryffindor, but also Slytherin were dumbfounded for a moment. This one dared to speak and the other dared to answer, and the situation had actually developed to this extent.

"Then what are you waiting for? Get out of my classroom! Now!"

"A few more questions." Erwin stood up, "Will you provide us with the materials we need to practice brewing potions?"

"You are also a professor now, don't you take responsibility for yourself?"

Malfoy let out a loud scoff.

Erwin squinted his eyes and realized that Professor Snape had not been angry during the whole process, and he obviously had a deep understanding.

"Can I use the free Potions classroom then?"

"what you think?"

The answer is obviously no.

Erwin turned around, "What do you think, Neville?"

There were tears in the corners of the round-faced boy's eyes. He was very frightened by the sudden spotlight. He subconsciously wanted to refuse. No matter from any point of view, it was too outrageous to ask a student of the same grade to teach him Potions.

But he stopped when he said rejection. He and Erwin were roommates, and after spending nearly a month together, he had already vaguely felt that this boy was different from others.

Everyone thought Neville was a pitiful fool. Even Hermione had a mostly pity attitude toward him. Only Erwin said he was a genius.

"Have you ever wondered why the Sorting Hat sorted you into Gryffindor instead of Hufflepuff?" Erwin's words seemed to have magic in them.

Neville stood up suddenly. He felt something expanding in his chest. He looked at Professor Snape for the first time and found a slight curl of contempt at the corner of his mouth.

"Let's go." Erwin motioned to him.

Snape glanced at the Gryffindor students coldly, "Is there anyone else who wants to leave? I won't stop them."

No one answered, and most people lowered their heads hard.

Harry was a little eager to try, but was immediately restrained by Ron, "Don't do anything stupid." The Weasley kid said in a low voice.

Erwin and Neville walked out of the Potions classroom one after another, and Snape's voice came from behind again, "The end-of-term test is the refining of twelve potions. If you make one mistake, I will fail you."

.”

Neville's body immediately shook.

The heavy door was closed.