Being at Hogwarts, something's not right with this system.

Because Hermione had thoughtfully prepared the class schedule, Lin Yu already knew the upcoming classes, as well as all the classes for the week.

First, Monday, there is a Transfiguration class in the morning and a Herbalism class in the afternoon.

Then they didn't have any classes.

As mentioned before, because Hogwarts has seven years of students across its four houses, the teaching staff is in short supply.

Although students may only have two classes a day, the teachers are actually always in a teaching state.

"Afternoon classes start at two o'clock," Lin Yu said, glancing at the timetable in his hand, reminding Harry and Ron, "Remember not to be late. Also, Herbology class is with Hufflepuff."

Although Transfiguration is taught solely by Gryffindor, Herbology is a combined course for both houses.

Not only Gryffindor and Hufflepuff, but Slytherin also took Herbalism class together with Ravenclaw.

In addition to herbalism, there are also potion-making, flying, and astronomy courses, all of which are combined.

Aside from Herbalism, Potions and Flying were taken together by Gryffindor and Slytherin, while Astronomy was taken with Ravenclaw.

Lin Yu immediately showed a thoughtful expression.

Don't forget he still has a mission: "You are now hated by the Slytherin disciples of Canaan School. Find a way to fight back."

Moreover, the reward for the task is a full thousand low-grade spirit stones.

Lin Yu wondered if five hundred low-grade spirit stones were enough for him to reach the first level of Qi Refining, and now that he had a thousand, would he be able to successfully advance to the second level of Qi Refining?

"A counterattack?" Lin Yu narrowed his eyes and looked at the class schedule again, only to find that the Potions class, which Gryffindor and Slytherin took together, would not be held until Friday.

Moreover, Potions class is a long class, lasting for two full periods.

Fortunately, they also had flight lessons together.

The opportunity has arrived!

"Hehehehe," Lin Yu couldn't help but laugh when he thought of something that made him happy.

Ron shuddered in fright and said to Harry, "I feel like Lin Yu has become a different person. It's terrifying."

Even Harry nodded and said, "Sounds like a villain."

Lin Yu thought to himself, "What do you know? This is the most classic laugh from Battle Through the Heavens."

The system thought to itself, "Am I bound to some kind of villain? There are just too many Soul Hall characters here."

The three children were all quite young, and since they had nothing to do during their break, they decided to wander around.

They happened to be very interested in Hogwarts Castle.

They discovered that Hogwarts had as many as 142 staircases.

Some of them are wide and large, while others are narrow and small, and they sway precariously.

Furthermore, some staircases lead to different places every Friday, and some staircases have a step that suddenly disappears halfway up, so you have to remember where you should jump over it.

In addition, there are many doors here, and they won't open for you if you don't politely ask them to open, or if you poke the exact spot.

Some doors aren't real doors at all; they're just sturdy walls that look like doors.

It's not easy to remember where things are because everything seems to be constantly moving.

Even the portraits hanging on the walls don't stay in one place forever; they visit each other as if they were real living things that would go from one place to another.

Even the armored soldiers you occasionally spot will move around, and some will even greet you.

As expected of a magical world, this magic castle is quite interesting.

After all, Hogwarts has a history of over a thousand years, and many powerful and famous wizards have been born here.

As the trio wandered around Hogwarts Castle, memorizing the routes to avoid getting lost in the future, they also treated it as an adventure.

Suddenly, a group of ghosts rushed out from inside the wall and surrounded the three of them.

"Who is it? Pippi is missing. Some people say it was one of you who did it," a ghost questioned.

It turns out that since last night, the ghosts suddenly discovered that Pippi Ghost had disappeared.

In the past, Pikachu had always been a headache for them, and they had even given other ghosts nasty nicknames.

But when they discovered that Peeves had suddenly disappeared, they felt strange and uneasy about it.

They are souls, after all. Even though Peeves is different from them, they and Peeves are both soul matter. Logically speaking, they have already died once, so they shouldn't be able to be attacked again.

But if someone can eliminate Peeves, doesn't that mean they won't be safe either?

So they need to figure out what happened.

Ron and Harry were startled and instinctively looked at Lin Yu.

Lin Yu stepped forward confidently, taking out the Myriad Soul Banner and holding it in his hand. He calmly said, "So what if it's me? I used Eastern Taoist methods. That guy is a troublemaker, and he even attacked students. In my country, he's a demon, deserving of death. Do you want to be suppressed by me?"

The ghosts all retreated a great distance in unison, looking at the Myriad Soul Banner in Lin Yu's hand with apprehension.

They did indeed keenly sense a threat emanating from that seemingly insignificant flag.

It was as if they would be sucked in if they dared to get close.

This was before Lin Yu actively unleashed the true effect of the Myriad Soul Banner; otherwise, they would have already gone inside.

Lin Yu actually knew that these ghosts were "part" of Hogwarts Castle, and some of them had even witnessed the history of Hogwarts.

For example, Barrow the Blood and Helena Lavenclaw.

Therefore, he wouldn't act rashly, otherwise even Dumbledore would personally come to him.

At least for now, Lin Yu doesn't want to fall out with Dumbledore.

He only appeared arrogant within the rules, but in reality, he never touched any real taboos.

Then Lin Yu changed the subject and said, "Don't worry, the Myriad Soul Banner won't kill Pipi Ghost. It will just lock him up inside to teach him a lesson."

As he spoke, Lin Yu's heart stirred, and with a tremor of the Ten Thousand Souls Banner, he temporarily released the Pipi Ghost.

"Damn it, you wretched master, I will offer you my damned absolute loyalty!" Pippi suddenly cursed.

But the ghosts looked at each other with complicated expressions.

What's going on? That Peeves who doesn't listen to anyone and probably only gives a little face to Barrow the Blood Man and Dumbledore, who's fearless and doesn't care about anything, is actually calling this first-year student "master"?

Moreover, despite his seemingly exasperated tone, he revealed a servile and obsequious nature.

It's as if they're using the most arrogant and vicious tone to say the most humble words?

Peeves tore at his own body frantically, roaring, "What did you do to me? Why did I willingly submit to you as my master? Damn it, damn it, Merlin's big shorts, am I supposed to submit to you for the rest of my life?!"