The Magical Principles of Natural Philosophy at Hogwarts

"That car? It belongs to the Weasley family. It's a long story." In the gamekeeper's hut, Hagrid took out some baked dark cakes from the fireplace and said this to the visitor.

Erwin said.

"You're here just in time. Let's try the freshly baked rock biscuits. Harry and the others really like this kind of snack."

Erwin took a piece and put it into his mouth, feeling that his teeth had suffered a difficult challenge.

It’s unimaginable that Harry Potter and the others would like this kind of thing.

"If Norbert is still here, he would like it very much." Erwin expressed his evaluation very tactfully.

Hagrid didn't hear what he meant at all, and there was a nostalgic look on his broad face, "I don't know how that little guy is doing."

Erwin used the cutting spell to divide the rock cake into small pieces, which made it feel much better to eat. In essence, it was just a small cake with a hard skin. If you ignored the texture, the taste was actually acceptable.

The male mother's sentimentality only lasted for a short while. Hagrid grabbed a few rock biscuits and put them into his big mouth, chewing them deliciously.

"What did you just say? Oh, yes, that car has undoubtedly been enchanted and is no longer an ordinary Muggle car. In early September, two little guys, Harry and Ron, drove this car.

When they went to school, they unfortunately crashed into the Whomping Willow. Nothing happened to the two little guys, but the car itself no longer listened to them and started wandering around in the Forbidden Forest since then. Mr. Weasley seemed to have imposed a force on him.

It has some kind of incredible magic that gives it the habits of a beast..."

It's Weasley again? Erwin's expression changed slightly, "Why do Harry and Ron want to take this car to school?"

"According to what they said, they were unable to enter Station Nine and Three-Quarters. Although the final investigation did not find any problems with the station itself. However, the main responsibility lies with Mr. and Mrs. Weasley, who failed to take care of these two

He had a child, and the flying car was seen by many Muggles - these were all published in the Daily Prophet, and they received a large fine."

Although he didn't know much about the Weasley family, Erwin could tell from Ron's school supplies that the financial situation of this wizarding family was very tight. He had met Arthur Weas a year ago.

Lai, that is exactly the image of a middle-aged man who is about to be crushed by life and work.

"So that means this car has been wandering in the Forbidden Forest for nearly two months? Didn't the Weasley family take any measures to recover their property?"

"I really hope they do this." Hagrid scratched the ears of the hound Fang, "That car is more troublesome than a horned beast, and the centaurs are also very annoyed with it."

"Maybe we can get it under control." Erwin leaned back in his chair.

"It's difficult. The centaurs are a little helpless..."

"I guess it's no problem for me." Erwin said with a very confident tone.

Hagrid smiled and said, "You are only in the second grade, it is impossible..."

He suddenly stopped because he suddenly realized that the boy in front of him was not a boy who should be looked at in a conventional way. In the first grade, he was able to make magic items and help him formulate a careful plan to raise a dragon.

Yet another young man whose talent was as dazzling as the sun, this brought back some not-so-good memories for Hagrid.

But the young man in front of me is different from that person back then. He doesn't have that false smile and mean arrogance.

Erwin didn't know what the half-giant in front of him was thinking. "Professor Dumbledore asked me to receive special training this summer. With my current magical strength, it shouldn't be a problem to deal with a car." He added.

As long as the headmaster is mentioned, Hagrid usually doesn't have any objections.

The gamekeeper hesitated for a while, and finally nodded, "It's not appropriate to have such an extra thing in the Forbidden Forest. I'm very happy that you are willing to help, but this will not be a simple battle, but a difficult one."

For hunting, you have to find the car first."

"Then you need to make a plan, the kind of plan for hunting large animals." Erwin thought for a moment, "It would be great if the centaurs are willing to provide some help, such as driving the car into a specific area.

But it’s too late.”

"I can try to communicate and negotiate with them, but it will take time," Hagrid said.

After preliminary finalizing some details of the hunting plan with the gamekeeper, Erwin took his leave.

He returned to the clearing and unfolded the Flamel House. As an advanced alchemical creation, the Flamel House had its own hidden function, so there was basically no need to worry about being noticed by other creatures in the Forbidden Forest.

"The potion you need has been refined," Esmeralda reported.

A row of test tubes filled with red liquid appeared in front of Erwin. He uncorked one and took a sniff.

Familiar smell.

Erwin previously repatriated a pack of dragon blood extract from the Romanian fire dragon farm, which was worth nearly ten thousand galleons, but the direct sale of the raw materials was only the most basic profit. There is a complete set of fully automatic magic potion refining tools in Lemei's cabin.

Naturally, we can find ways to increase its added value.

There happens to be such a formula in the library, the red dragon's blood potion.

This potion has a similar effect to the same dose of dragon blood extract. It provides the user with magic power that can immediately participate in magic release, recovers injuries to a certain extent, and can increase the user's magic talent in a very small amount.

One purified dragon's blood can be used to make ten red dragon's blood potions. Even if the cost of other materials is included, the profit from selling it to the Diagon Alley pharmacy is at least 200%.

Only then did Erwin realize what a waste of resources he had done by drinking the dragon blood extract directly.

Of course, this high profit margin can only be maintained within a certain quantity. Exceeding market demand will inevitably lead to a significant drop in price.

Erwin inherited Flamel's cabin, which basically means that his financial situation can be maintained in a prosperous state without much effort. How could the alchemist be short of money?

The refining process of the blood of the red dragon is quite cumbersome, but for Erwin, he only needs to complete the distribution of magic power to the raw materials. Except for this operation, which must be completed by the wizard, other processes can be left to the magician in the potion room.

The optimization tool can be used to complete the process by itself, and the efficiency is amazing.

The reason why the Blood of the Red Dragon potion is called this is not because it must use the blood of the red fire dragon, but because the scarlet grass in the raw material makes the potion appear red.

Packing and sending this batch of red dragon's blood potion to the Diagon Alley pharmacy will be Erwin's first income in the magical world. If it goes well, there will be no need for Felwood to use some dishonorable means to ask Huo Huo in the future.

The Muggle students of Gwarts raised funds.

In the evening, in the Gryffindor common room, Harry and Ron were worrying about the Potions paper, and Erwin sat directly next to them.

Facing the surprised looks of the two children, Erwin looked as usual, "I heard that you didn't come by train when school started. Can you tell me the details? You know, I was not in school at the time."

Harry didn't seem to want to talk about it, but Ron became interested, his eyes were shining, and after the next half hour, he enthusiastically told Erwin how he drove his home

That car, and the specific operation is described in great detail.

Because there were several girls next to him, especially the very good-looking Melanie, Ron deliberately spoke loudly, which was the unique display mentality of an immature little boy.

But it wasn't just the girls who heard him speak.

"That's alright, Ron." Percy couldn't help but said: "This is not a heroic deed worth talking about. Have you forgotten the roaring letter your mother sent you?"

Ron's face flushed slightly.

"That car has been wandering in the Forbidden Forest, which has caused great trouble to Hagrid, the gamekeeper. It is your family's property, and I think you should have the obligation to deal with it." Erwin said, "Even if you are

If your parents can’t get away, they at least have to ask someone to do it for them.”

"Mom would never pay anyone for help." Percy shook his head, "In fact, she wishes that car had never existed."

Mrs. Weasley's mood can be understood. If Erwin remembers correctly, Mr. Arthur Weasley works in the Department for the Prohibition of the Misuse of Muggle Items. His main responsibility is to deal with accidents caused by wizards applying magic to Muggle items.

, and the fact that he actually has such a magical car in his home is a typical example of knowing the law and breaking the law.

"In that case, I do have a good proposal." Erwin pondered for a while, "Since your mother doesn't plan to want that car anymore, why not sell it to me. As for the price... how about two hundred galleons?

"

Percy was stunned, and Ron opened his mouth in surprise.

"Isn't it enough?" Erwin seemed to have misunderstood their reactions, "Then three hundred? Four hundred? Five hundred? Just five hundred gold galleons, no more!" He tried his best to show that he was being taken advantage of.

Ron was already out of breath.

The older Percy was much calmer, "Why did you buy that car? And where did you get so much money?"

"Just out of curiosity; all five hundred galleons came from the exchange of Muggle coins at Gringotts; if you have any doubts about the validity of the transaction, I can ask Professor Dumbledore as a guarantee; after the transaction is completed, no

I need you to deliver it. After I get the title, I will ask Hagrid to capture the car." Erwin spoke quickly.

Percy was speechless for a moment, as he really seemed to have nothing to ask.

He looked at Ron and found that his young brother looked very excited. Looking at his wand, he saw that it was almost completely broken and was wrapped hastily with tape.

It was originally the old wand used by Percy, and Ron has been making do with it since he broke it at the beginning of the term.

Although it is a bit shameful, their family's financial situation is indeed quite difficult. Although five hundred galleons is not a lot, it can help mother solve many problems, especially since father has just been fined by the Ministry of Magic.

For a moment, Percy was about to agree directly.

His expression changed several times, "I'm going to ask my mother for her opinion." He finally said.

"It's understandable, my conditions remain unchanged." Erwin nodded.