Regarding Harry’s adventurous actions, Hermione and Ron were initially opposed.

Based on their understanding of Professor Snape, if they were to obstruct Snape and be caught by him, the consequences might not be as simple as losing points or expulsion.

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

After all, Snape was planning to use the Philosopher's Stone to restore Lord Voldemort’s power, and once Lord Voldemort returned with his power, the wizarding world would once again be plunged into a bloodbath.

Hermione, in particular, having thoroughly read the history of magic, naturally understood what kind of war the wizarding world would be embroiled in after Lord Voldemort’s return.

This was also a scene the other two did not want to see.

“It’s decided then, but to prevent anyone from stopping us midway, we’d best go invisibly.”

“We?”

Harry was a little surprised; he thought this was his own business, that he must stop Snape, and had not intended for Chen Yu, Ron, or Hermione to take this risk.

Just as Hermione and Ron had initially worried, if they were caught by Snape, the consequences would indeed be unimaginable.

“Don’t joke, how could we just stand by and watch you go on an adventure? Saving the world is super cool, alright? Can’t we share some of the credit for saving the world?”

Chen Yu shrugged his shoulders and took out the Serpent Spell from his system backpack.

He was already a little impatient to see the Philosopher's Stone.

Hermione and Ron also agreed with Chen Yu.

“Wait a moment, I’ll go back to my dormitory to prepare.”

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

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 powerful magical combat ability. They might come in handy later.”

“Both the invisibility cloak and the Serpent Spell have the effect of making the holder invisible, but the invisibility cloak can only cover a maximum of three people, and three people squeezed under the invisibility cloak would be too crowded.”

“How about we go in pairs? Ron and I will use the invisibility cloak, and Chen Yu and Hermione will use the Serpent Spell. We’ll meet at the door of Fluffy’s room on the fourth floor.”

“If one group encounters a problem midway, the other group must stop Snape from getting the Philosopher's Stone!”

After speaking, he called Ron over, then he and Ron put on the invisibility cloak together.

Seeing Harry and Ron become invisible, Chen Yu pulled Hermione’s arm and also used the Serpent Spell to make them both invisible.

The four set off early, passing through the long corridor.

Chen Yu could feel Hermione’s arm trembling slightly.

In this situation, Hermione was still a little nervous.

Glancing around to confirm no one was present, Chen Yu comforted Hermione in a very low voice: “Don’t worry, we will definitely succeed this time.”

Hermione hesitated, asking in a slightly trembling voice: “I hope so too, but we are just first-year students, how can we stop a professor’s evil deeds?”

“But professors are people too, and people have weaknesses. If a professor were to be hit by a Full Body-Bind Curse when completely unprepared, he would obediently fall down, wouldn’t he? Besides, I still have a trump card I haven’t used yet.”

Perhaps Chen Yu’s words gave Hermione some courage; Chen Yu felt Hermione take a few deep breaths, and her arm stopped trembling.

The two headed straight for Fluffy’s room on the fourth floor, and along the way, they even saw Filch’s cat—Madam Norris.

She sat at the top of the third-floor staircase, vigilantly surveying her surroundings.

Chen Yu and Hermione instinctively held their breath, not wanting Madam Norris to discover them.

Madam Norris stared with her two bright eyes in their direction but saw nothing, letting out a confused “meow.”

When Chen Yu brought Hermione to the corridor outside the fourth floor.

Fluffy’s room already had a crack in the door.

Chen Yu thought Harry and Ron had already gone in, and just as he was about to push the door open, he felt his foot step on something relatively soft.

“Ah~ woo~”

A low whimper from Ron came from beside him.

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

Harry saw Chen Yu and Hermione and also pulled off the invisibility cloak.

Indeed, he had just stepped on Ron’s foot, who was now covering his mouth, trying his best not to make a sound.

“I thought you guys had already gone in.” Harry whispered, “It seems Snape has already entered the room ahead of us; he’s already impatient 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 you regret it now, it’s still not too late. Whoever wants to quit can take the invisibility cloak; I don’t need it anymore.”

“Since we’re already here, what nonsense are you talking about? We’ll go in invisibly; it’s safer this way.”

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

Accompanied by the creaking sound of the door opening, the four immediately heard barking in their ears.

Harry and Ron quickly put on their invisibility cloaks and entered Fluffy’s room with Chen Yu.

At this moment, Fluffy’s three heads were roaring while fiercely sniffing towards the door.

“What’s that thing next to him?”

Hermione asked softly.

Chen Yu looked at the object at Fluffy’s feet and replied: “It looks like a harp.”

“That must have been left by Snape; it seems he has already passed Fluffy’s guard.”

Chen Yu was about to say something when a discordant flute sound suddenly reached his ears.

The sound was extremely sharp and piercing, making one’s heart pound.

After hearing the flute, Fluffy barked even more vigorously, as if protesting that if the playing was that bad, he should stop.

“I feel like it’s not working.”

“Harry, what you’re playing isn’t music at all, it’s noise, so of course it won’t work.”

“I’ve never learned to play the flute, what should we do now?”

Harry and Ron’s discussion came from beside them.

A bad start made Harry very frustrated.

Hermione touched Chen Yu’s waist from behind and asked softly: “Chen Yu, what should we do? I can’t play the flute either?”

Chen Yu patted Hermione’s arm, signaling her not to worry, then took out the miniature triangular projector he had gotten from Tony Stark from his backpack.

Tony Stark was indeed a top billionaire and an excellent inventor. Chen Yu wasn't sure if he had bought this triangular projector or invented it.

It not only had a holographic projection function but also hundreds of terabytes of memory.

Chen Yu first cast a Confundo on the miniature triangular projector, making the magic in Hogwarts that disables Muggle items mistakenly believe this object was a magical item with a faint magical reaction, then opened the pre-prepared Mozart’s “Lullaby” and began continuous playback.

With the miniature triangular projector’s battery capacity, even continuous playback for a day would not be a problem.

Hearing the music coming from the machine, Fluffy’s three heads began to droop, his eyes relaxed downwards, then he yawned, and his barking stopped.

Gradually, he swayed unsteadily, then plopped down and fell asleep.

Fluffy’s breathing became steady and regular, and he snored.

Music was indeed Fluffy’s weakness; Hagrid truly did not deceive us.

“See, it’s solved. This thing can play for a whole day, which gives us plenty of time to get through the trapdoor.”

Chen Yu raised his eyebrows, saying, though in an invisible state, his expression was lost on those who couldn't see him.

“That’s incredible.” Hermione said, looking at the sleeping three-headed dog: “What Hagrid said was actually true. I thought he was just joking, after all, a XXXX-level magical creature’s weakness being music sounds too much like a fairy tale.”

Seeing Fluffy completely asleep, the four tiptoed towards the trapdoor.