Huh? There's a magic school here.

The fifth floor houses the library's restricted section, where books can only be borrowed with the professor's permission. This is because many of the books here are dark magic texts unsuitable for young people. This setting suggests the library might have an entire area extending from the second to the fifth floor – quite magical, considering these spaces are invisible from the outside. For well-known reasons, Andres still can't enter the rooms; he can only catch a glimpse of them as he passes by.

There are many empty classrooms on the fifth floor or classrooms used as storage rooms. The Mirror of Erised that Harry saw in his first year was one of those classrooms that Dumbledore placed.

The fifth floor could be converted into activity rooms for students later. After all, students in Europe and America like to organize various groups and organizations. Perhaps the student council could also be established here? Andres shook his head. It was too early to think about these things now. It would be better to let the students decide for themselves when they arrived.

To be fair, these are things that Europeans and Americans like to do. Their student council is different from ours. For example, the fourth door to the left of the Boris statue on the sixth floor is the prefects' restroom, which can be entered with a password.

On the sixth floor, on the east side, is a corridor run by the sycophantic Gregory that connects to a huge classroom, usually where students take exams. There's also a staircase on the sixth floor leading to the Ravenclaw Tower.

There aren't many special places on the seventh floor. Apart from the office of Potions Professor Horace Lughorn, most of the other rooms are unused classrooms.

Andres arrived on the eighth floor and stood opposite the tapestry depicting the troll beating Barnabas, trying to open the Room of Requirement to take a look inside. However, he ultimately failed. He thought that perhaps his level was not high enough, or that Hogwarts' current level was not high enough to open the room.

Professor Flitwick's office, which is also the office of the Headmaster of Ravenclaw, is on this floor, as is Dumbledore's office. There's also a staircase on the eighth floor leading to the Hogwarts Tower, and the portrait of the Fat Lady in the middle of the staircase marks the entrance to the Gryffindor common room. There's another staircase on the eighth floor leading to the top floor, which leads to the Owl Shacks. However, in the Harry Potter films, besides the shacks, there's also a corridor leading to a tower outside the castle, which is also a shack for raising owls.

In addition, there was a door on the eighth floor that led to the North Tower, where the Divination classroom was located. This meant Andres had toured all four of Hogwarts' towers. Walking around like this was tiring, so he sat in the Gryffindor common room for a while and took out a bottle of mineral water from his storage bag to drink.

This castle is huge! We've been exploring for hours and only managed to see part of it. No wonder there were so many house-elves in the original story serving the entire castle. Looks like I need to exchange for more house-elves from the system, otherwise the castle's cleanliness will be a problem, not to mention taking care of so many children.

Thinking of this, Andres realized he needed to go downstairs to check the kitchen and basement before he felt at ease. Hogwarts' kitchen was located directly below the Great Hall, and it contained four long tables identical to those in the Great Hall. Food was passed from here to the corresponding tables in the Great Hall during mealtimes. Andres scratched a pear in front of the fruit portrait, and the kitchen door opened for him. He only glanced inside before leaving.

Hufflepuff's lounge is located near the kitchen, hidden behind some barrels. You can only enter by striking a specific rhythm on certain barrels. If you strike the wrong barrel, sorry, you'll need a bottle of aged vinegar to sober up.

The Hogwarts dungeons are located beneath the castle. Because they were originally dungeons, they feel much colder and more gloomy than the main building. Severus Snape, when he was Hogwarts' Potions teacher, set up his office here. His office was cold, dark, and filled with bottles and jars containing various slimy animal entrails and dried plants. The Potions classrooms were also on this floor. No wonder the students were so afraid of Professor Snape; who would want to study in the dungeons?! Studying in the dungeons—that must be torture!

Slytherin's common room was also converted from a dungeon, but the view of the Black Lake from the common room was quite a pleasant experience. Andreas finished his tour of Hogwarts Castle with great satisfaction, fulfilling a wish from his previous life. In his past life, he was a die-hard Harry Potter fan who dreamed of visiting Hogwarts, and he never imagined that his dream would come true one day.

Back in the lobby, Andres brought up the system again. He retrieved the five House-Elf cards from the system and asked it to materialize them.

A flash of white light appeared, and five house-elves with eyes as big as golf balls and ears like bats appeared before him.

Although they were dressed in tattered clothes, they were in good spirits. When they saw Andres, they all bowed and said, "Master, what can I do for you? I am your servant Dobby, Flashy, Kleche, Heggie, and Hall."

"Alright, from now on, don't call me master. You can call me principal or Mr. Andres. Master sounds a bit awkward."

"Yes, Headmaster!"

They were obedient and corrected their mistakes quickly.

"You all need to inspect and tidy up the entire castle first, especially the headmaster's office. I'll go back to London to make some preparations, and then I'll move to this castle. I'll also check what we're lacking so I can replenish our supplies."

"Yes, Headmaster. Is there anything else you require?"

"No, just keep an eye on the castle while I'm gone. By the way, Dobby, you'll be in charge of this place for now."

"Yes, Headmaster!"

After arranging these things, Andres left Hogwarts Castle. The moon was still in the sky, and Andres checked the time; four or five hours had passed. He returned to the roadside, where his rented car was still parked. He planned to return to Inverness to return the car to the rental company, then go back to London to pack up before heading back to Hogwarts.

As for concerns about the sudden appearance of a castle and whether it might be seen by others, there's absolutely no need to worry. Since its construction, Hogwarts Castle has been automatically protected with various invisibility and banishment spells to prevent interference from Muggles. In other words, under normal observation, you, as a Muggle, cannot see the castle.

Some might ask, does a wizard's invisibility spell truly make them invisible? From a light and visual perspective, yes, but Andres believes it doesn't work from a thermal imaging perspective.

In other words, if someone is outside the banishment spell and holding a thermal imaging camera, they can indeed see a large area of ​​heat emanating from the wizard, but visually there is nothing there.