This is what Ravenclaw looks like.

"Strange..."

Andrew didn't react, but Percy looked around the empty house.

"What's wrong?"

"I suspect someone used the Disillusionment Charm."

Percy's tone was a little uncertain, but after seeing Andrew's puzzled look, he began to explain, "It's a spell that can hide the user's body with magic and become similar to the surrounding environment."

Is it the same as a chameleon?

Andrew didn't spend much time on spells, and it was the first time he heard of such a spell-to be honest, he was a little tempted.

But the key thing now is not this.

He trotted to close the door, and then ran back.

"Is it just a simple hiding? There is no such thing as making the body disappear?"

"Of course not, how-what is this?"

In Percy's puzzled eyes, Andrew took out a handful of dark yellow sand from his bag.

"Sand, I use it to practice Transfiguration."

This uneven material is much more difficult to transform as a whole than other materials. Andrew deliberately left it on his body to make things difficult for himself. His Transfiguration is currently in a rather awkward stage, and he can only hone it bit by bit through repeated practice.

Using basketball as an example, he has done a good job in explosive power and endurance training, and the rules are very clear, but his height is seriously insufficient because he is too young to develop. There is no way but to wait for development and practice what he can do.

Of course, Transfiguration is not that simple, and he can do more than just wait for development.

"Sand?"

"Yeah, right..."

Andrew nodded, then took out his wand and began to perform Transfiguration on the air. However, this time he did not imitate the Bubblehead Charm, but compressed the air to the extreme, and then wrapped the translucent ball with sand.

"Iron Armor Charm, Senior Percy."

Andrew handed the things to Percy while speaking, and then hid behind Percy.

"Ah?"

Percy took the ball hesitantly, and then cast an armor spell on himself - when he was sure that the spell was successful, Andrew cast a simulated bubble head spell on Percy. Then he immediately lifted his Transfiguration.

The sand began to splash around the room driven by the bursting air, but it only made a slight sound when it hit Percy's armor spell - this made Percy's originally nervous posture suddenly become quite relaxed, even a little careless.

No, this level of sand is almost like a gust of wind. Is it really that serious?

But at this moment, Andrew didn't have time to explain to him what the necessary measures to prevent accidents were - because under the sweep of the sand, a group of strange human figures were easily revealed.

Accompanying the human figures were two heads floating in the air, which kept making pooh pooh sounds. One of the red heads was obviously a relative of Percy, because the hair color was too similar.

Andrew was also familiar with the other one - the hottest freshman in the school this year, a well-known figure in the entire wizarding world, Harry Potter.

"You two, what's wrong - during the holidays..."

Percy scolded the two heads rather harshly, but soon lost his temper - as an excellent prefect, he was still very familiar with the rules.

Although the two people were wearing invisible cloaks, they did not seem to violate any school rules - which made people even more angry.

He frowned, but finally chose to give up helplessly.

"Come on, you two, what are you doing here?"

"Strolling, just a stroll that is completely in line with school rules," Ron almost rushed to answer the question.

"Strolling? Then why wear an invisible cloak?"

Percy stared at the disappearing body parts of the two people, and he was almost sure what it was at this moment.

"There is no rule in the school rules that prohibits us from wearing invisible cloaks in school, Percy."

Ron was more confident at this moment, "and now it's vacation time, we can go wherever we want."

Hmm? It shouldn't be... If Ron was like this everyday, Percy should have gotten used to it and shouldn't be so angry - could it be?

Andrew glanced at the mirror and confirmed his guess - probably what the mirror saw made people feel inflated.

This is normal, it really knows people's hearts.

Andrew hesitated, and finally chose to give Percy a chance to communicate with his brother.

"Hello, classmate Potter."

Andrew stretched out his hand, and Harry, who was puzzled, stretched out his hand and shook Andrew's hand, "Can we go out and talk for a while, just about the mirror problem?"

"Ah? Okay."

Harry was also in the stage of hesitation. If it was someone else, he would definitely support Ron, but if the other side was also a Weasley family, this would not work.

The two left the room one after the other, and Andrew closed the door - but when he closed the door, he shook his head in confusion, but found nothing.

When the room was closed, Ron's howl came out almost immediately.

A fifth-year elite prefect fought against a first-year greenhorn who had studied for half a year, and the result was beyond discussion. Maybe Ron has learned the school rules well, but the word "brother" and the hidden rule of strength taught him a very new lesson.

"Don't worry too much. Professor McGonagall said that Percy always pursues the best, and I think this should include control."

Andrew looked at this Harry Potter and said softly - he had not planned for the two of them to meet.

He is a somewhat realistic person. Even if it means helping, he is not willing to help those who do not save themselves, and unless there is no other way, he will never let himself get into the most troublesome situation.

"You'd better have less contact with that mirror," Andrew reminded. "I haven't heard much about its principles, but there is no doubt that it will reveal the scene you most want to see - which is not a good thing. , illusion is illusion after all, it will not bring us any progress. "

"Well, I understand..."

Harry said softly, but he was actually not convinced.

Andrew also saw it - but he had already persuaded it, and this thing ultimately had to rely on itself to overcome the satisfaction brought by false illusions.

"That's good, I think Percy's persuasion is enough."

Andrew smiled and knocked on the door, "Senior Percy?"

"Well, that's almost it."

Percy answered loudly, and then walked out happily - the not-so-correct saying that you should hit your brother early was suddenly somewhat correct at this moment.

"Let's go..."

He said with satisfaction, and Andrew followed with a smile.

It wasn't until he passed a corridor that he put down what he was holding, and a cold sweat broke out on his back.

He had figured out what was wrong.