Felix and Dumbledore opened their eyes at the same time, and the professors in the room looked at them nervously.

"Are you whispering?" Sirius asked in a bad tone, "We just stared at each other like idiots for five minutes."

Snape waved his sleeves in disdain and walked away.

This was true, because it was in someone else's dream, and Felix did not use the mind acceleration. The time that passed in the dream was the same as the time that passed in reality.

"You can understand it as two healers discussing the condition and don't want to be disturbed by some noisy guys." Felix said teasingly, "Hasn't it consumed your energy to Apparate with those students all day long?" Sirius

smacked his lips and muttered, "I should ask for a raise."

At this time, Professor Burbage woke up from the bed. She seemed very flustered at first, but when Dumbledore's bright blue eyes looked at her through the lenses, she quickly calmed down, which made Felix amazed.

"Caridi, I don't want my words to sound like accusations, but you really shouldn't bear these troubles alone." Dumbledore said gently, "You can always find help at Hogwarts."

Professor Burbage took a deep, trembling breath, tears streaming down her face, she covered her face and said, "Oh, I'm sorry, I'm so sorry."

Madam Pomfrey stepped forward and handed her a steaming cup, "Dear, drink the hot chocolate, it will make you feel better." She took it, took a sip, and whispered, "I'm so stupid..."

"Caridi, what happened? I heard part of it from the students, but what they said was too ridiculous, a Squib? This is impossible." Flitwick said sharply, "Maybe we can help."

"It's a shadow." A low and slow voice echoed in the ward: "I saw a lot of wizards, shadowy, but couldn't see their faces clearly..."

"Are you talking about the ancient magic exchange event held in Hogsmeade?" Professor McGonagall said unceremoniously: "Thank you, Sybil, I can't pretend that I didn't see the news in the newspaper... October 27th, three weeks from now."

"Of course not!" Trelawney shouted, as if insulted, staring at Professor McGonagall: "I have expected that there will be twists and turns in that exchange... Fate warned me, I said something else..." "

Then can you explain it more clearly?" Professor McGonagall suppressed the snort from her nose and asked patiently.

"Well... the third eye is not allowed to be abused, but... yes, I did see something," Trelawney tried to open her eyes wide and raised her head. Her lenses flashed and she said in a deliberately trembling voice: "It seems to be an island, no, it may be a castle..."

The others were not interested in listening anymore, and they turned their attention back to the person on the bed.

Professor Bubbage's lips moved, hesitating, not knowing how to start. No one urged her, and then she finally opened up: "It's my own fault - I learned some knowledge from the Muggle world, and as a result, I began to doubt myself... Yes, I doubted magic. Alas, I am a fool."

"My thoughts changed several times along the way." She said softly: "About two years ago, I first came into contact with similar knowledge. It was a book called "The Biography of Mendel". Some of the views in it coincide with my long-standing thoughts." She glanced at Dumbledore quickly, "You know, I oppose the 'pure blood superiority'... Of course, Muggle books don't mention wizards, but the meaning is similar."

Then she began to unconsciously say some unfamiliar terms, such as "Mendel", "pea experiment", "gene" and "hybridization", which confused the people around her. They looked at Dumbledore, and then at Felix.

"In a nutshell, it is a word created by Muggles when studying the grand theme of 'life'." Felix summarized.

Several professors suddenly realized that it was much easier to understand this way.

Professor Sprout looked at Professor Bubbage. "No wonder you talked to me so often for a while. It sounds like you're studying humans as plants."

"Plants? How can humans be the same as plants?" Professor Sinistra shook his head.

"That's not entirely true," Professor Bubbage retorted. "That book was just for enlightenment. Their research methods were very simple at the time. They have only become more sophisticated in the past ten years... I mean, Mendel was a person from the 19th century."

Felix blinked. Speaking of which, when was Headmaster Dumbledore born? He felt that the idea was a bit offensive and rationally kept silent.

"If you ask me to evaluate, you are already ahead of many people, Caridi." Dumbledore said gently, "But...how did you put yourself in danger?"

"I, alas." She sighed, "Two years ago, I attended a Muggle Research Conference. The conference was interrupted unexpectedly, resulting in the lack of publication of my hastily completed paper. Prior to this, Professor Hepp had advised me that my research would arouse collective opposition from pure-blood wizards. I didn't really listen..."

She sniffed, "I am optimistic that as long as I study deeply enough, I can gain the upper hand in foreseeable disputes and silence them with irrefutable evidence."

Professor Bubbaji said embarrassedly:

"Later, my research came to a standstill, so I turned to Muggle books that had given me a lot of inspiration. I bought the most cutting-edge professional books, magazines, and papers, and read them intently. My progress was very slow because there were too many unfamiliar words and convoluted logical relationships... To be honest, I didn't think that Muggles would achieve anything amazing at the beginning... I just wanted to find new ideas and improve my own theories. But as my research progressed, I discovered a terrible fact: there is no magic in Muggle research on the essence of life, not a single word... but their theory is unexpectedly self-consistent... I was very unconvinced and wanted to find flaws. Alas, the nightmare happened."

Her eyes were full of fear, and she shivered as she took a big sip of hot chocolate. The fragrant liquid gave her courage, and she began to tell the most critical part.

"Although my mind is rejecting them, my subconscious mind has accepted these theories, and my research direction has quietly changed: I hope to be able to reconcile these two viewpoints. I mean, squeezing them together... it's really overestimating one's own ability... As a result, my mind is completely confused," Professor Bubbage trembled, and there was a confused look in his eyes again: "It's strange, they have amazing similarities in some viewpoints, but in other places they are completely opposite... I can't reconcile these contradictions, so I chose to visit Muggle biology experts during the summer vacation, but this brought more terrible consequences. I actually began to doubt magic... In the end, in the end..."

She closed her mouth tightly, and the ward became quiet.

Every professor fell into deep thought. Snape looked at Felix with a strange look in his eyes. Although his face was as calm as a stone or a plant growing in the dark, his heart was fluctuating violently.

That kid almost got himself into trouble.

The Christmas gift he gave himself! Those chemistry books! Although Felix gave him the experimental manual for middle school students, he happened to pass by a bookstore in Spinner's End during the summer vacation and bought a few chemistry books on impulse. After reading them carefully, he found them very helpful...

Snape's expression was unfathomable, and he leaned against the wall with his shoulders folded. No one could guess what he was thinking. He did see a lot of inconsistencies with the views of wizards in the chemistry books, but he didn't get stuck in a dead end, because he knew a little early that Muggles did not have magic power. Even if the potion formula was given to those people and they followed the same steps, the best result would be a pot of stinking pus.

Thinking of this, he glanced coldly at Professor Bubbage. It was no wonder that he was betrayed by his own magic when he didn't even recognize his identity as a wizard.

At this time, Sirius broke the silence in the room.

"Why do we have to dwell on these questions?" He spread his hands. "James and I modified motorcycles together... I mean, we went on adventures in Muggle shops, ahem, to investigate Death Eaters! Yes, that's it... At that time, we didn't even understand the purpose of the spark plug, but that didn't stop us from keeping it, and we didn't think it was that annoying when we sat on it."

"That's two different things." Snape said.

"I think it's the same thing," Sirius also subconsciously retorted: "Perhaps you think you can master all the knowledge? Able to do everything?"

Snape glanced at him coldly and ignored him: "Principal Dumbledore, if there is nothing else, I will leave first." After that, he walked out of the ward. After a few seconds, his energetic voice rang out from outside the door:

"No spells are allowed in the corridor! Gryffindor will be deducted 20 points!"

Sirius couldn't sit still anymore, he found a lame excuse to leave, and soon, a fierce quarrel was heard in the corridor.

"Severus Snape! Try to deduct points again!"

"Ah," Dumbledore came back from his deep thoughts and turned to look at Professor McGonagall, "Minerva, you'd better go out and separate them before they cause more trouble. I don't want to see the news of Hogwarts professors fighting on the headlines of newspapers." After Professor McGonagall left, the others left one after another.

When only Dumbledore, Charity Burbage, Felix and Madam Pomfrey were left in the ward, Dumbledore explained the two most feasible treatments to Professor Burbage. Surprisingly, she did not choose the seemingly easy method.

"I don't want to forget that knowledge," Professor Burbage said hesitantly, "I will be more careful next time!"

"If you insist." Dumbledore respected her choice, but still warned her, "But you can't do similar research in the short term."

Professor Burbage nodded cautiously.

"It's better to take Charity to St. Mungo's for a period of recuperation. The environment here is still too simple and can only deal with routine injuries." Madam Pomfrey suggested.

"But I don't want to be absent... I, well, okay." Professor Bubbage said.

Dumbledore stood up easily: "Then it's settled, please wait, I need a few minutes to explain to the students that their little heads are always full of all kinds of strange ideas, it's best not to let them play..."

He walked out of the ward, and his brisk voice came faintly from outside:

"... I am happy to announce... There will be no long-term impact... Too tired, need to rest for a few days... It won't be long before you will be a complete professor..."

In the ward, Felix was also ready to say goodbye and leave.

"Professor Hep," Professor Bubbage hesitated for a moment and called him, "I'm sorry, I didn't follow your advice."

"This is something no one expected," Felix said calmly: "I understand your approach: it's hard for a normal person not to be moved when you find a corner of the treasure on the way forward." He sympathized with Bubbage's experience, but more of it was self-reflection.

He was thinking about another problem in his mind. If one day wizards reveal their identities, in order to promote communication between the two sides, it is necessary to establish a place where wizards and Muggles can coexist. It was like a test field, where all mature and immature ideas could be put into practice...

It would not be appropriate to put this place in Diagon Alley or Hogsmeade, as there were more realistic factors to consider, such as the attitude of the Muggle government. But Trelawney's words gave him some inspiration, an island...

Felix thought about it, wondering if he could build it in the future?

...

Professor Charity Burbage did not stay at St. Mungo's. She was absent for only two days before returning from the hospital, which prevented the discussion among the students from causing any waves. As she returned to teaching, especially after demonstrating the levitation spell in class, the rumors that were already untenable were broken.

Hogwarts Castle regained its peace. As October 27 approached, newspapers began to report the relevant news in length, and photos of the Hogsmeade venue were constantly published.

A student flipped through the latest newspaper, which showed a site map that had not yet been completed. Dozens of staff members stood on a small open space in the center of the Hogsmeade village, directing wooden boards to appear in the right place.

"It looks like a huge open-air auditorium," said the student reading the newspaper.

"It's more like a dueling arena," his companion corrected.

Their views are very representative. Regarding this exchange activity, Hogwarts students have different focuses. They automatically divided into two groups. One group focused on the exchange itself, discussing who would come and what effect the activity would achieve; the other group firmly focused on the episode of the exchange activity - the challenge session.

Coincidentally, the latter view was prevalent in both Gryffindor and Slytherin.