At half past ten in the morning, Sirius took Harry to King's Cross Station in a taxi.

Harry was quite surprised to see Sirius glance at the timer skillfully and then took out a banknote to pay. "I have lived in Muggle society for a year after all." Sirius said. The two walked into the station with their luggage, talking and laughing. Then Harry felt several eyes from different directions. He immediately became alert and grabbed the wand in his pocket.

"Someone is following us. Is it the Auror?" He asked in a low voice.

This time it was Sirius' turn to be surprised. "Did you find out? Oh, not only Aurors, but also some Muggle guards. They are the first members of the Joint Law Enforcement Department, although this department does not even have a name yet..." He muttered, "How did you find out?"

"The teacher taught me in class." Harry said, and he had a complicated feeling in his heart, because this knowledge came from Grindelwald.

The station was crowded with people coming and going. They did not stay for too long and swiftly passed through the partition between platforms 9 and 10. The next second, a crimson train came into view. Harry stopped. Normally, he could board the train directly, but today there was an extra bearded Auror.

"Name?" The bearded Auror stopped them and looked down at the thick list.

"Harry Potter," Harry said, and looked at the list in the Auror's hand curiously. Because the handwriting was upside down, it was a bit difficult for him to read, but he still easily grasped a simple fact, that only two-thirds of the parchment on the page were ticked.

Harry looked up at the time, ten forty-nine, which was obviously not normal.

The bearded Auror muttered, "Harry Potter, the letter P... Oh, God!" He seemed to have just reacted, raised his head and stared at Harry.

"Brian, the train is about to leave." Sirius reminded the Auror.

The bearded Auror's eyes moved to Sirius, and his expression relaxed, "Black? That's right, Harry Potter is your godson." He ticked a tick on the parchment, "Okay."

"Are there still many people who haven't come?" Harry took the opportunity to ask from the side.

"Yes, some students go to school through the fireplace," said the bearded Auror, nodding his chin in the direction they came from, and muttered: "A new measure, huh? There are always people who have doubts..."

"Let's go, Harry." Sirius said.

Harry followed him for a distance and looked at his godfather, "Why didn't I know about this?"

"Why, you want to go to school through the fireplace too? That won't work, you are the Head Boy Student Union," Sirius smiled at him, and then showed a thoughtful expression. Harry bet that Sirius would never have thought that one day these words would come out of his mouth, "- you have to set an example."

"Like my dad?" Harry said sullenly, while taking out the badge of the Head Boy Student Union from his pocket.

"You can also choose to be like your mother, she does a good job." Sirius grinned. "Actually, James did a pretty good job. We all say that it was Lily who changed him, but part of the reason was because of the 'student leader'."

These words comforted Harry, and he put on the badge. At this time, Hermione's voice came from behind him. Harry turned his head and saw her trotting over, followed by Crookshanks. She stopped in front of Harry, panting: "Fortunately, fortunately - I'm not late."

"Traffic jam?" Harry guessed, otherwise he really couldn't think of a reason why Hermione was almost late.

"Oh, no," Hermione panted heavily, realizing that Sirius and Harry were staring at her, she said reluctantly: "When I entered the station, someone recognized me, and someone asked me for an autograph. Fortunately, I didn't let my parents follow me in..."

"This is too outrageous." Harry muttered.

The train made a loud roar.

"The train is leaving," Sirius urged, pointing in a direction. "Is that Ron? I see him - the one waving, in carriage six."

Harry and Hermione strode towards carriage six. He was exhausted from carrying the bags, so he looked a little indignant when he saw Hermione holding only Crookshanks. "I packed everything in the beaded bag," she explained, taking Hedwig's cage.

When they reached the door of the carriage, Ron helped Harry carry the box onto the train and put it on the luggage rack of the adjacent carriage. Neville and Ginny were there too. They said hello and walked towards the locomotive.

"Somehow, it was easy to find an empty carriage," said Ron.

Harry told him about the conversation just now, and Ron suddenly realized, "So that's how it is. I was wondering why no one at home reminded me - I'm the prefect. I say, two presidents, can you give a shorter lecture later? I didn't eat breakfast this morning..."

"No problem," Harry said immediately, "because I can't think of what to say."

According to the requirements of the letter, the prefects of the four colleges should accept instructions from the male student union president and the female student union president respectively, but Harry and Hermione felt that there was no need to separate, so they simply gathered all the prefects together.

"...The only thing worth noting is that there are four Aurors stationed at the front and rear of the car, and they can be contacted in case of emergency. Of course, if there is an emergency, they may know it before us. The rest is to maintain order and occasionally patrol the corridor... That's it."

After Hermione finished speaking, she looked at Harry. Harry shook his head, indicating that he had nothing to say, so Hermione decisively announced the disbandment.

Back in the carriage, they each talked about their experiences during the last period of summer vacation. After Bill and Fleur's wedding, Hermione went home to reunite with her parents, and Harry chose to stay at the Burrow because the old Black house was empty most of the time and too boring.

"You were away for a few days." Ron recalled, "It seemed to be for inspection or something."

"Yes," Harry said slowly, "Two Ministry of Magic staff came to register families with house elves-there was a little accident during the process."

"What accident?" Neville asked curiously.

"Was it exciting?" This was Ron's question.

"Absolutely exciting." Harry said with a straight face. He stared at Ron for a few seconds before telling what happened that day:

"In order to prove that Kreacher was in good condition and let him stay, Sirius and I racked our brains and wasted a lot of time to persuade Kreacher to change into a piece of clothing that conforms to human aesthetics and standards..."

"This is a good thing, it shows that the Ministry of Magic is gradually implementing the legal provisions." Hermione interrupted.

"You really sound like Percy." Ron said. Hermione looked hurt, and Ginny sneered. Harry hurriedly continued to tell his story. Thanks to his frequent correspondence with Elphias Doge during this period, Harry felt that his ability to polish his story had improved a lot. Soon, everyone in the carriage was attracted -

According to Harry, he, Sirius, and Kreacher made an emergency renovation of the Black house, and found many suspicious magic objects in every corner.

"That's why I tried so hard to break off relations with my family when I was in school," Sirius said seriously. Harry knew that the members of the Black family were a little "crazy" and their ideas were different from those of normal people.

"But now this house is completely under my control!" Sirius said happily, and he waved his hand, "We have to leave a good impression on the guests, and the first thing is to let my elders have a good sleep!"

But it was obvious that the portraits on both sides of the hallway didn't want to sleep. They were all ancestors of the Black family, and they passed down their most stubborn memories before they died, so it was extremely difficult to persuade them. Harry and Sirius had to use some tricks.

"Bad master! Bad young master!"

Kreacher jumped around anxiously, trying to stop them, but unfortunately he was powerless - a red light of the Stunning Spell flashed, and the long corridor returned to silence. Harry and Sirius looked at their results with satisfaction. Except for one or two portraits with saliva dripping from their mouths and wigs tilted to one side, the others looked so perfect.

"You just did an emergency cleaning?" Ron asked dissatisfiedly in the carriage.

"It's not over yet." Harry said. He continued.

When the staff came to the door, Sirius greeted them with a smile and led them to the living room. Harry's heart was suddenly covered with a shadow. He felt that he had overlooked something, so he stopped where he was and tried to think about what it was...

The members of the Black family were all crazy...

Exaggerated screams echoed in the hallway. Harry ran away, remembering the scene when he first came to the old house. There was something on the wall on the side of the stairs that he remembered vividly, but now he was used to it and did not look in that direction when going up and down the stairs.

A short wizard tumbled down the stairs with a horrified expression. Harry followed his gaze and saw a row of wrinkled house-elf heads stuck to the wall plaque. Everyone present froze, and the smile froze on Sirius's face, which gave Harry time to recall what his godfather had said when he introduced the family tree to him with disgust three years ago:

"My dear Aunt Elladora... When the house-elves were too old to carry plates, they would chop off their heads. This family tradition was started by her..."

The train passed a field, and Ron asked about the details with relish.

"And then? Did they run away immediately and bring back a team of Aurors a few minutes later?"

Harry rolled his eyes.

"No, Sirius and I finally convinced them, really convinced them." He emphasized, as if to explain that no spells such as Stunning Charm were used. "The two men registered Kreacher's name, and when they left, Sirius swore that he would take down those heads... I don't know how to deal with the permanent sticking spell, maybe we have to remove a whole wall."

"That's a big project."

A laugh came from the carriage.

...

Hundreds of kilometers away in Hogwarts, Professor McGonagall, wearing square-framed glasses, lowered her head to read the article in "Today's Transfiguration", and occasionally took out a feather pen to mark the mistakes on it. After

correcting an article, she raised her head and glanced at Felix and the Sorting Hat. The former was holding the latter in his hand and spinning it in circles. The Sorting Hat was so dizzy that it couldn't help shouting: "Quickly take care of him! This person is destroying the most important historical relics in the school! What did I see? A shameful behind-the-scenes deal, the vice-headmaster bribed the current headmaster--"

Professor McGonagall raised her eyebrows in her seat.

"Poor Sorting Hat, you are not a real person after all." Felix smiled and faced the crack of the Sorting Hat. He said triumphantly: "Even if I gave away the videos of the Montrose Magpies' recent twelve games, it would not be considered a bribe, because they are just gifts, which come with the purchase of the magic projector... Although it is a year late, it is still a gift."

"It has nothing to do with this." Professor McGonagall glared at Felix. His explanation seemed to be more obvious. She pursed her lips and said: "Felix convinced me that if his magic can be made one of the core of the school's defense system, the safety of students will be greatly improved."

"No!" The Sorting Hat shouted. "That is the authority of the four founders. Even the headmasters after them can only make repairs on the original basis."

"So I came to you," Felix said in a persuasive manner: "The four founders may not have considered so much. Why don't you open your mind and let me have a good exchange with them? What if everyone has a good chat?"

The Sorting Hat was strangely silent for a while.

In previous years, it read students' thoughts and sorted them into different colleges according to their different characteristics. This was the first time it heard someone wanting to read its own thoughts - oh, the four giants who had injected thoughts into it thousands of years ago - it was the first time it heard someone wanting to read its own thoughts.

The Sorting Hat asked curiously, "Do you think you can be recognized by the four of them at the same time?"

"I think it's okay," Felix said seriously, "If you don't believe it, we can try."

"...But I heard that you have pushed memory magic to an unprecedented level?"

"Rumors, all rumors, I still have a lot of room for improvement."

The Sorting Hat was silent again, this time for longer, and then it twisted, and the gap on the edge of the hat opened to the maximum. Felix seemed to feel a stream of air pouring out of the gap, like a person was about to open his mouth and shout, and then the Sorting Hat shouted -

"Come and save me! No matter who it is! Minerva McGonagall, you are the headmaster! Dumbledore, look at what you have done!"

In the golden picture frame belonging to Dumbledore on the wall, Dumbledore seemed to be asleep, but Felix clearly saw that he and the other headmasters had been watching them with interest before, and even blinked mischievously - once upon a time, Felix also showed a strong interest in the Sorting Hat in front of Dumbledore.

After all the noise, the Sorting Hat still refused to agree, and threatened not to attend this year's Sorting Ceremony. Felix had to take the Sorting Hat off his head with regret.

"You seem to want to talk to the founders, Felix?" Professor McGonagall asked sharply, "Are you under too much pressure recently?"

Felix shrugged and said in a relaxed tone:

"I just can't make up my mind - especially when you have multiple alternatives. So far, I believe we are still on the right track. But because of this, every choice in the future is more important."

He said lazily:

"I can understand why Babajide Akinbade did nothing. With six billion people and two million wizards on the other side of the scale, anyone would feel suffocated -" He paused thoughtfully, "Maybe I should talk to Trelawney. Every time I see her weird look, it makes me full of confidence in the future."

Professor McGonagall looked a little strange, "Don't say that to her face, she's been in a bad mood lately."

"What's the matter?" Felix asked with interest, "Oh, I thought of it, it's for this year's new professor?"

"Yes, the centaur Firenze." Professor McGonagall said, "He accepted Dumbledore's invitation to teach before, and officially joined this year."

...

In the evening, the crimson Hogwarts Express slowly slowed down with white steam and drove into Hogsmeade Station.

Harry and the others greeted Hagrid, but they didn't talk much because Hagrid still had to take care of the first-year students. They walked towards the carriage, and Hermione took out a piece of parchment from her pocket, "Harry, we should go to the front. One of the jobs of the male and female student union presidents is to lead the students into the castle..."

They quickened their pace, passed the students one by one, and stopped in front of the first carriage. Then the two of them waited for the students behind to get into the carriage with a dignified look.

"Almost." After a while, Hermione said. The two entered the carriage. Harry reached out and patted the Thestral's bony back affectionately. The Thestral looked back at him meekly and then started walking.

The wheels rolled and the carriages behind them followed suit. They formed a long line through the dark night.

Finally, the carriage stopped at the stone steps leading to the oak door of the castle. Hermione jumped down immediately, followed by Harry. When almost half of the students had gathered around them, Harry and Hermione led the way into the castle.

The hall was brightly lit. When Harry and the others entered, there were already quite a few students inside. They all came to school through the fireplace. Harry saw quite a few familiar faces. Some sixth and seventh grade students were sitting at the long dining table, chatting happily, just like they were dealing with the day's news clippings during the summer vacation. Harry

was stunned for a moment and stopped where he was. "What's wrong?" Hermione asked in a whisper, and also stopped.

The students behind were blocking the door and couldn't get in, and kept asking what happened. At the same time, the students in the hall heard the footsteps and the noise and looked over. Harry's arrival made these students realize that school had started. They stood up from their chairs one after another and prepared to return to their desks in their own houses.

Harry walked straight to the long Hufflepuff table.

Hermione followed him hesitantly, but Harry's direction became clearer and clearer, and it also showed that he was wrong. "Harry, you're going the wrong way." Hermione reminded him in a low voice. "That's right." Harry said in a calm tone, although his heart was beating violently at the moment.

He sat next to Cadwallader, the chaser of the Hufflepuff Quidditch team, whose eyes were wide open. He looked like he had seen a ghost.

Hermione reacted at the last moment, she turned a corner from Harry and sat at the Ravenclaw table.

"Hello, Hermione." A dazed voice sounded in her ears.

"Oh, hello, Luna." Hermione replied, she looked behind her nervously, the people behind her seemed a little confused, "Everyone - everyone sit wherever you want." She cleared her throat and said, everyone came back to their senses, and sat down in twos and threes. The students who had stood up also sat back on their chairs and continued their previous conversation.

But the expressions on everyone's faces were obviously a little strange, exchanging looks of excitement and fear, and a little surprise. In their impression, this was unique.