“Today is a practical class.”

Felix said on the podium. With a wave of his hand, hundreds of more wooden jars appeared in the air, which floated in the air. Then he waved his hand again, and the space in the classroom began to extend in all directions, widening to half the size of an auditorium in the blink of an eye.

The students exchanged excitement and whispered.

Then, a large book with a simple shape appeared in Felix's hand. He turned the first page and the ancient magical texts of bright colors surged out of the book, each half inch in size. They were like some small flying creatures entangled and connected together, like a long unfolded scroll, or a gorgeous long carpet - but not woven with thread, but made of magical texts.

Felix and the students looked at the magic text that surrounded them like a wall for a while, and then spoke:

"Some of these magical texts are special. They cannot blend well with the characters around you. All you have to do is pick them out - both test your eyesight and techniques, because if you are not careful, you will destroy the nearby structure... and successfully pick the next one and add one point. You can use the chestnut can to add the extra magical text symbols. The final score is related to the length of your homework today, let's start."

"Oh, by the way, you can't use a magic wand. This will become the guideline for future practical lessons..."

The students walked up one after another to choose the jar they liked, while Felix himself sat in a soft chair, recalling the just-concluded academic conference.

There were many people present, all over the world. According to the original plan, the first evening party was similar to the welcome, and the function was to provide opportunities for communication and meeting. This kind of thing was inevitable because many people's impression of each other was on the names and academic content of academic journals, which was not comparable to the real person.

Therefore, someone must act like a host. The best candidate in Felix's heart is naturally Slughorn. The old professor was so slim and the smile on his face never stopped after the whole party.

The Tonks and his wife are here too.

They stopped in front of the huge booth for a long time. In fact, they didn't understand what these people were discussing, nor could they accurately distinguish the meaning of the magic sequence solidified by Felix with magic. But every time the two of them heard the amazement from experts, their position was shaken.

The hall on the first floor of the Sword Castle was crowded, and they searched for their daughter. Finally, they found her next to a spacious pillar. Lupin next to him looked calm, but was extremely excited. He remembered the promised speech Felix had made: With the invention of the wolf poison, new theories will emerge one after another, and werewolf's situation will improve.

To a certain extent, these words have indeed come true one by one. In just the past two years, improved formulas for wolf poison potions have appeared, and the cost has been greatly reduced; the Ministry of Magic has also passed legislation that all werewolves registered can enjoy discounts when purchasing wolf poison potions.

Therefore, a considerable number of werewolfs chose neutrality during the war.

But none of this is more exciting than what he heard earlier tonight. Lupin has learned about the two solutions proposed by Felix - ancient magic that can control werewolf transformations; and the profound human deformations that transform together with the internal structure of the body - both methods he hopes to do, and the latter can even make him a real human for a brief moment, which means he can have an extremely healthy child.

God knows how ecstatic he was when he learned the news.

In fact, the werewolf symptoms are not 100% passed on to descendants, but for Lupin, it is like waiting for God's judgment. He has been tortured by his werewolf identity for decades and cannot bear this uncertainty.

There was an episode on the day of the dinner.

Lucius Malfoy showed up with his wife, and the couple dressed in gorgeous clothes and promised to donate 50,000 gold to a beautiful cause. This caused many people who settled abroad and were insensitive to politics to surround him and listened to him talk about his son Draco's "therapist dream."

This effect is... not bad.

"The newspaper said," Hermione carefully looked at the luminous scroll in front of him, which were like tight bricks embedded together, saying, "More than two hundred people were present, they were experts in the three fields of potions, healing and alchemy, and officials from different countries' ministries of magic."

She put her right hand on the magic text wall and easily removed a glowing ancient magic text.

"What a big deal," Harry said in admiration.

"But strangely, the host of the press conference was Professor Slughorn," said Hermione.

"No wonder," Ron spoke from the side. He saw Harry successfully taking down an ancient magic text and reached out to the glittering wall with a thrilling hand. "We all know that he is good at this. Think about who can deliver a touching eulogy when facing a huge hideous spider corpse? Oh, no."

He moaned, trying to stuff the ancient magic texts he had taken back, but it was too late, and a dangerous red light flashed in front of him.

"Bang!"

Ron was flooded with black smoke. He covered his mouth and coughed. Harry and Hermione hurriedly hid aside and almost squeezed Neville to the wall. "I'm sorry, Neville!" Harry said to Neville who was rubbing his chin with apologetic expression. Neville's eyes were shining with tears, "It's okay."

Ernie, who was standing by, didn't pay attention to the small accident at all and kept talking to himself, "Justin got six points, I don't want to lose to him."

When the smoke cleared, Ron muttered to Harry and Hermione dissatisfiedly, "Run ran so fast that I almost squirted out the leaves of Mandela grass. Hermione, you should remind me."

"Your choice is right, but there is a problem with the technique." Hermione pointed out his mistake, then waved her fingers, and cleverly took a magical text from the wall and raised her hand at him.

"Like this, use your magic to stabilize the surrounding connection points. We just need to pick out those characters that look dissonant, so it's easier."

"I know." Ron said weakly, "My attention has been drawn away, so we shouldn't talk about Slughorn. It's better to think about it-" He paused, gritted his teeth and took off an ancient magic text like a building block.

At the same time, a word was spit out from Harry's mouth: "Blood Alliance."

Hermione took a breath of cold air, her fingers shivered, and a concrete character turned into pure magic, dispersing like smoke. "Beware!" she shouted nervously, and an ancient magical text quickly condensed from her fingertips and stuffed it back. The three of them stared at the wall carefully for a moment, until the red light on it stopped flashing, they breathed a sigh of relief.

"This game is quite exciting." Ron said fairly, he was in a much better mood.

Hermione looked around and the eyes were attracted by the movements made by Cormack McLagan. She took the opportunity to lower her voice and said, "I think it's better not to say it out, especially when it comes to that person." She showed an incredible expression, as if she was about to scream the next second, but she tried her best to suppress it.

"It's incredible, I mean the principal and..."

Harry remained silent and took luminous characters from the wall. These contents were what he saw from last week's meditation basin. At this point, he could no longer hide it. He was deeply involved and urgently needed to discuss it. The people he trusted most in the school were undoubtedly Ron and Hermione.

In the last class, Harry saw a brand new, subversive memory.

The young Albus was preparing for a graduation trip in full swing, but in a blink of an eye the tragedy came upon him. His mother died unfortunately because of the magic caused by Ariana, and he had to return home to take care of his younger brother and sister. Harry witnessed his pain and anxiety throughout the whole process, and blamed Albus who showed impatience for the first time. Of course, the people in the memory could not refute it, but the master of the memory could, but Dumbledore all agreed.

This made Harry regret a little. Thinking from the perspective of others, if he had to stay in the Dursleys as an adult, he would definitely go crazy. But that was his own relative after all, wasn't it? But when he saw Albus establishing a friendship with a young man, Harry was happy for him from the bottom of his heart.

Until he heard that name.

"Hello, my name is Gellert Grindelwald."

Harry suddenly remembered the letter he had read. In his letter to Sirius, his mother Lily mentioned that Dumbledore and Grindelwald had had a close relationship, but perhaps because of the space, Lily did not mention the cause and effect in the letter, nor did she indicate the time. Therefore, when Harry heard the name from the mouth of the blond boy who was not much older than him, he seemed completely unprepared.

Next was a long memory clip, but it was enough to make Harry realize that the friendship between the two was progressing rapidly. He even read several enthusiastic letters from the perspective of a bystander, presenting them in a sudden and extremely uncomfortable way, muggles, rule, government, army... These words appeared in front of him like thorns, repeatedly poking his heart.

But none of this is as good as the picture that appears in the barn.

Two people—young, two people with great reputation in the future—Dumbledore and Grindelwald, cut their palms with their wands face to face, and then their hands were put together, blood converging, and dazzling light lit up two young and solemn faces.

Harry felt dizzy. Finally, when the outer layer of blood beads that were fused together and covered with a metal shell, he asked loudly what it was. Dumbledore was speechless. He almost forcedly told Harry that it was a "blood alliance", and he and Grindelwald had created a blood oath.

The course ended in a hurry, in the way Harry was most reluctant to do so.

"Harry, Harry?" Ron cried, "We are already behind. I don't want to have two inches more of my homework today."

"I understand." Harry muttered, busy, but he had already made up his mind.

Before get out of class ended, students lined up for testing.

"Susan Bones, 52, well done, homework - one foot; Anthony Goldstein, 47, one foot and two inches; Millison Bears, 29, well, you need to practice more, otherwise you can't keep up with the next stage of the work - one and a half feet in length."

Felix commented casually, and the long queue gradually decreased.

Harry was deliberately lined up behind him, holding the chestnut jar, waiting for Ron and Hermione to walk away, and walked forward.

"Harry Potter, I'll look-59, ranking pretty high, very good, seven inches of homework."

Harry racked his brains to ask two questions, waiting anxiously for the other students to pack their schoolbags and walk out of the classroom. Ron and Hermione knew what he was going to do, waved at him and left first. Felix looked at him thoughtfully.

"It seems that your real problem cannot be heard by others."

"Well, yes...Professor, I want to ask what is the Blood Alliance?"

Felix showed a surprised expression.

He thought in his mind for a few seconds—

"There are many contracts in the magic world, from verbal agreements with no binding effect to magic contracts. Among them, the most solemn and most cautious contracts are treated with caution. Once signed, they cannot be violated. Because the cost of breaking it is too high."

"Die?" Harry asked softly.

"...Yes, like the unbreakable oath, of course, there is the Blood Alliance. But the latter is more stringent and only exists in legends."

"Why? Are they not the effects similar?" Harry asked in confusion: "Except for the different numbers of people, the unbreakable oath requires a witness."

"I can tell many differences, such as - like you said, the unbreakable oath requires three people." Felix said, Harry blushing, feeling a little slow, and he didn't notice the "many differences" that the professor said.

"But the most important thing is the content of the oath. The content of the unbreakable oath is more flexible. I can swear that I will never eat chocolate frogs in my life, or that I can let myself enter the door with my right foot from now on... In short, there is no specific requirement. But the Blood Alliance is different. It has its own magic core and does not need to say the contract to be followed. This has a serious impact. Can you find out, Harry?"

Harry tried hard to think without swearing...What does this mean? Don't waste words? No, it's definitely not... Waiting up, without words... you are not restricted...

"The Blood Alliance will not be deceived by lies?" he blurted out.

Felix nodded with a smile.

"The unbreakable oath is closer to the word 'contract', so the content of the oath must be determined in words. The words... can be teased, there are always loopholes to follow, as long as the final requirement is reached. In other words, it controls your behavior and has a certain lag."

"In extreme cases, a person with a determination to die can sign any unbreakable, 'false' oath."

"But the Blood Alliance is not like this," Harry said excitedly: "It has fixed content, which makes it impossible to be deceived by sweet words. The two must be absolutely sincere, even the idea of ​​swearing—" He looked at Felix as confirmation.

"You guessed it right. The Blood Alliance is bound by the heart. Any thought that tries to violate it will immediately cause backlash."

"What's the content?" Harry couldn't wait to ask.

Felix hesitated for a moment.

“As far as I know, it’s not hurting each other.”

"Can it be destroyed? I mean, the token formed by the Blood Alliance?" Harry continued to ask.

Felix glanced at him, "Did I mention the token?"

"Oh, uh--"

"Maybe it can be destroyed." Felix did not pursue the loophole in Harry's mouth, but simply said: "I have never signed such a contract and I don't know the specific result."

In fact, all contracts he signed have one common feature: he can tear and twist it at any time. But he has no interest in touching those who are unsure of destroying - whether it is an unbreakable oath or a blood alliance. His knowledge is extremely limited.

Harry left with great worries.

Felix stayed in place, watching him disappear, and then suddenly raised his head and stared at the ceiling, his vision seemed to penetrate the wall. He stared deeply at the location of the principal's office tower.

Perhaps Harry himself didn't realize that the direction in his question was actually very obvious.

"Blood Alliance...Who is Dumbledore and? Evenly matched - Yes, only Grindelwald."
Chapter completed!