Across the heavens, I am the Avatar Sword Master

Hermione and Ron were initially opposed to Harry's risky move.

Based on their understanding of Professor Snape, once they obstruct Snape and are caught by him, the consequences may not be as simple as deduction of points or expulsion.

But after repeated persuasion by Chen Yu and Harry, they still agreed to Harry's adventure.

After all, Snape was planning to use the Philosopher's Stone to restore Voldemort's strength. Once Voldemort gained strength and returned, the wizarding world would once again be plunged into chaos.

Especially Hermione, who is familiar with the history of magic, so she naturally understands what kind of war the wizarding world will be involved in after Voldemort returns.

This is also a scene that the other two people don't want to see.

"That's it, it's been decided, but in order to prevent being interrupted midway, it's best for us to go invisible."

"us?"

Harry was a little surprised. He thought that this was his own business. He must stop Snape and did not let Chen Yu, Ron, and Hermione take this risk.

Just as Hermione and Ron were worried at first, once Snape catches them, the consequences will be disastrous.

"Don't be ridiculous, why do we just watch you take risks? Saving the world like this is super cool. Why can't we share the credit for your efforts to save the world?"

Chen Yu shook his shoulders and took out the snake charm from the system backpack.

He couldn't wait to see the Philosopher's Stone.

Hermione and Ron also agreed with Chen Yu's statement.

"Wait a minute, I'll go back to the dormitory to get ready."

Harry seemed to remember something important and immediately ran back to the dormitory excitedly.

After a while, Harry ran back with the Invisibility Cloak.

"Chen Yu, I brought the pistol you gave me and the metal bracelet you said could give me powerful magical combat power. Maybe I can use it later."

"Both the invisibility cloak and the snake charm can make the holder invisible. However, the invisibility cloak can only cover up to three people. However, all three people are squeezed under the invisibility cloak, which is too crowded."

"Why don't we work in pairs? Ron and I will use the invisibility cloak, and Chen Yu, you and Hermione will use the snake charm. We'll meet at Lu Wei's door on the fourth floor."

"If something happens to one group during the process, the other group must prevent Snape from obtaining the Sorcerer's Stone!"

After saying that, he called Ron over, and then put on the invisibility cloak with Ron.

After seeing Harry and Ron invisible, Chen Yu took Hermione's arm and also used the snake charm to make the two invisible.

The four of them set off early and walked through the long corridor.

Chen Yu could feel Hermione's arms shaking a little.

Seeing this situation, Hermione was still a little nervous.

Glancing around and seeing no one around, Chen Yu comforted Hermione in a small voice: "Don't worry, we will definitely succeed this time."

Hermione hesitated, and asked with a trembling voice: "I hope so too, but we are only first-year students, how can we stop a professor's evil deeds?"

"But the professor is also a human being. He is a human being and has weaknesses. If the professor is hit by a full-body binding spell without any precautions, he will fall down obediently. Besides, I still have my trump card that I haven't used yet."

Maybe Chen Yu's words gave Hermione some courage. Chen Yu felt that Hermione's arms stopped shaking after taking a few deep breaths.

The two went straight to Lu Wei's room on the fourth floor, and saw Filch's cat, Mrs. Norris, on the way.

It sat at the top of the stairs on the third floor, patrolling the surroundings vigilantly.

Chen Yu and Hermione held their breath involuntarily, not wanting Mrs. Loris to discover them.

Mrs. Norris stared at the two bright dogs and looked in this direction, but saw nothing, and gave a confused "meow".

Wait for Chen Yu to take Hermione outside the corridor on the fourth floor.

A gap has been opened in Lu Wei's room.

Chen Yu thought that Harry and Ron had already entered. Just as he was about to push the door open, he felt something soft under his feet.

"Ah~woo~"

Ron's low scream came from the side.

Realizing what he had stepped on, Chen Yu quickly released his foot and then released his invisibility.

When Harry saw Chen Yu and Hermione, he also lifted the invisibility cloak.

Sure enough, he had just stepped on Ron's foot. At this time, he was covering his mouth and trying not to make a sound.

"I thought you had already entered." Harry whispered. "It seems that Snape has entered the room in advance. He can't wait to get the Philosopher's Stone."

Looking at the half-open door, Harry, Hermione, and Ron clearly realized what they were about to face.

"If it's too late to regret now, whoever wants to quit can take the invisibility cloak away. I don't need it anymore."

"You're already here, and you're still saying stupid things. Let's go in invisible. It's safer this way."

After Chen Yu finished speaking, he pulled Hermione and pushed the door open.

Along with the creaking of the door, the four people immediately heard the sound of barking in their ears.

Harry and Ron quickly put on their invisibility cloaks and entered Lu Wei's room with Chen Yu.

At this time, Lu Wei's three heads were roaring while sniffing fiercely at the door with their noses.

"What's next to it?"

Hermione asked quietly.

Chen Yu looked at the thing at Lu Wei's feet and replied, "It looks like a harp."

"That must have been left by Snape. It seems that he has passed Lu Wei's guard."

Chen Yu was just about to say a few words when suddenly the sound of a flute came to his ears.

The sound was very sharp and harsh, and those who heard it felt frightened.

After Lu Wei heard the sound of the flute, he screamed even more vigorously, as if he was protesting to stop playing if it sounded so unpleasant.

"I feel like it's not working."

"Harry, what you are playing is not music at all, but noise, so of course it has no effect."

"I've never learned to play the flute, what should I do now?"

Next to them came the sound of Harry and Ron discussing again.

It was a bad start, which made Harry very frustrated.

Hermione touched Chen Yu's waist from behind and asked in a low voice: "Chen Yu, what should I do? I can't play the flute either?"

Chen Yu patted Hermione's arm to tell her not to worry, and then took out the miniature triangular projector he got from Tony Stark from his backpack.

Tony Stark is indeed a top rich man and a top inventor. Chen Yu doesn't know whether he bought the triangle projector or invented it.

It not only has a void projection function, but also has hundreds of T of memory.

Chen Yu first cast a confusion spell on the miniature triangular projector, causing the magic in Hogwarts that disables Muggle items to mistake it for a magical item that should have a weak magic response. Then he opened the prepared Mozart's " Lullaby" began to play on a loop.

With the battery capacity of the mini triangle projector, there will be no problem even if it is played continuously for a day.

Hearing the music coming from the machine, Lu Wei's three heads began to sink, his eyes stretched downward, and then he yawned, and the barking stopped.

Gradually he swayed, then flopped down and fell asleep.

Lu Wei's breathing became steady and regular, and he purred from his mouth.

Music is indeed Lu Wei’s weakness, and Haigh will not deceive us.

"Look, it's solved. This thing is enough to sing for a day, which gives us enough time to pass through the trap door."

Chen Yu raised his eyebrows and said, but it was a pity that he was invisible and his expression was seen by the blind man.

"It's incredible." Hermione looked at the sleeping three-headed dog and said, "What Hagrid said is actually true. I thought he was joking. After all, the weakness of xxxxx-level magical creatures is music. It sounds so fairytale.”

Seeing that Lu Wei was completely asleep, the four of them tiptoed towards the trap door.