The day of the duel at Hogwarts

Snape suddenly talked about werewolves in the last chapter, which immediately caused a commotion among the young wizards. However, due to the fact that Snape had deducted points from Harry and Hermione just now, the commotion was a commotion, and the young wizards also did not Dare to say anything more.

By the end of the class, everyone had a preliminary understanding of werewolves.

In class, Snape emphasized many times on how to identify werewolves. Most of the people listened a little impatiently, but Sean noticed that the expressions on the faces of young wizards with sharp minds like Hermione had begun to change. It became ugly. Apparently, after Snape's many hints, she noticed something more or less.

When get out of class was over, Hermione didn't even leave with Harry and Ron. She left the classroom immediately and went directly to the library. She wanted to check out some books about werewolves.

Sean and Blaise walked out of the Defense Against the Dark Arts classroom. They walked to the first floor and separated. Blaise and Andy made an appointment to watch Quidditch training, and Sean followed Snape's footsteps. , came to his office.

Entering Snape's office, Sean closed the door and said, "Professor, how about my third material substitute, is that okay?"

"I experimented before going to class, and there are some problems."

Upon hearing this, Sean frowned. According to his calculations, there should be no problem with the substitution of the third material. However, as the saying goes, true knowledge comes from experiments. Just calculations may not be able to calculate all changes. There may be some omissions.

So when Sean heard Snape's words, he immediately asked: "Professor, what's the problem?"

"If it's just about pure medicinal efficacy, there won't be much difference between your substitute and the original material. Even if there is a very slight difference in medicinal efficacy, it will still be within a negligible range. But there is a problem here. Thirdly, In the third-material substitute potion, one material conflicts with a material in the first substitute potion. When the potion is brewed, the two materials will repel, causing the potion to explode. Failure, this conflict cannot be reconciled, and one can only choose alternatives, either the first or the third.”

When researching alternative materials, Sean knew that one day he would encounter the conflict problem of alternative potions, but he did not expect that he would encounter this problem so quickly. This was only the first stage of research. !

"I'll go back and think about it, and try to replace them with materials with more mild effects to reduce the possibility of future conflicts."

"I will also pay attention here, go ahead."

Taking Snape's experimental materials, Sean returned directly to the bedroom, and went to the library with the materials he had accumulated previously.

This time Sean did not use a quill. He used the pencils he brought when school started. In order to make calculations easier and faster, Sean brought a lot of pencils and scratch paper.

It's a pity that electronic products cannot be used in Hogwarts. Otherwise, bring a computer or calculator to calculate faster.

After an unknown amount of time, Mrs. Pince came to Sean. She looked at the calculation papers in Sean's hand, and then at the five or six mental recovery potions on the table next to her. Even though she had always treated Hogg As Woz's students were not too cold, she couldn't help but soften her attitude.

"The time has come for me to close the library."

Mrs. Pingsi's words stunned Sean for a moment. He came back to his senses and looked at the darkened sky outside the window. He was a little confused and said suddenly: "It's getting dark? So soon..."

"If you go back now, you still have time to find the house elf to prepare some food for you. You haven't eaten yet."

Gu Dan

Sean nodded, came back to his senses, and while packing his things, he said to Mrs. Pings: "It's true that I haven't eaten. Thank you, Mrs. Pings. I will pay attention to it when I go back."

"Well, don't forget your things, and don't forget to take away the trash too."

"Okay, Mrs. Pince."

Sean packed up quickly, but instead of going back to the Slytherin common room, he went directly to the kitchen to ask the house elf for some food and drink, and then went straight to the Room of Requirement with his things.

Sitting in the comfortable Room of Requirement, Sean simply ate and drank something, and drank two potions, one to relieve physical fatigue and the other to restore the spirit.

After a short rest and the effects of the potion taking effect, Sean picked up the pen again and continued his unfinished calculations.

Early the next morning, Sean stood at the door of Hogwarts Castle. He looked at the drizzle outside. He reluctantly took out his wand, cast a waterproof spell on himself, and then summoned an umbrella on the tip of the wand. , then walked out of Hogwarts Castle and came to the Quidditch pitch.

At this time, the Quidditch game has begun.

It can be seen that Gryffindor and Hufflepuff have already started fighting.

However, comparing the games between Gryffindor and Slytherin, both sides were much more civilized, and many extreme behaviors did not appear.

Sean came to the Slytherin stands. Since there were no Slytherins on either side of the game, not many people were willing to brave the rain to watch the game between Gryffindor and Hufflepuff.

What surprised Sean was that Malfoy and the others came, and he didn't know whether it was because they came to see Harry or to watch the game.

After finding Brace, Andy, and Jason, Sean walked over, yawned, and sat down on the seat that Andy had cast a drying spell on. He put away his umbrella and there was a barrier in the stands. Canopy, no need for umbrellas.

Blaise looked at Sean and wanted to say something, but when he saw Sean, he was immediately frightened.

"Sean, what did you do last night? Why are the dark circles under your eyes so heavy?"

Hearing Brace's words, Andy also looked over. When he saw the dark circles on Sean's face, he was shocked and said: "Sean, didn't you sleep last night? We are looking for you this morning. There is no one in your room, we thought you went out first, but now it seems that you didn't sleep last night, right?"

"Well, I found a place to work on papers and data."

"How's the result?"

"It's done, one day and one night. When I came here, I had just handed the thesis to the dean. I just need to wait for the dean's notification. This stage of research is also over. I want to take a good rest for a while. , replenish some energy, the next stage of research will not be that easy."

As soon as Sean finished speaking, there were sudden exclamations from the audience. Harry, who had just rushed into the sky to track the Golden Snitch, actually fell from mid-air. Along with the falling Harry, a large number of souls were captured. The monster flew out of the dark clouds and rushed towards the students in the stands!