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

Unlike the previous levels, the levels set by Snape do not require the use of force.

So Lin Yu and Hermione put away their swords and looked at the parchment on the table.

The sign read: "Danger is ahead, safety is behind. Two of us can help you. Drink these; one will lead you forward, and the other will take you back to where you started."

However, there are seven bottles placed side by side on the table, which means that this is a puzzle.

Continuing down the page: "Two contain nettle wine, three are assassins, lined up waiting. Choose, unless you wish to remain here forever."

"We also provide four clues to help you choose: First, no matter how cunningly the poison hides, it is actually on the left side of the nettle wine; second, the contents of the bottles on the left and right are different. If you want to move forward, they will not be of any use to you; third, you will find that the bottles are of different sizes, and there is no death hidden in the giant and the dwarf; fourth, the second one on the left and the second one on the right, although they look different, taste the same."

This is all the content on the parchment.

Lin Yu couldn't help but chuckle: "Professor Snape is quite kind."

But Hermione glared at him and said, "Don't be careless, there's poison in this."

After all, they've described him as a "killer."

Next, it was Hermione's turn to perform again, and she even laughed, as if she had encountered something amusing.

Lin Yu smiled, crossed his arms, took two steps back, and silently watched Hermione, as if he were giving her the stage.

Hermione glanced at Lin Yu, then, with a darting look in her eyes, said, "How about we have another match?"

Lin Yu shook his head and said, "What's the point of competing? Win or lose, you're still my girlfriend. I can kiss you whenever I want, so what if you're not happy?"

Hermione immediately spat out, "You scoundrel. Oh well, it's not really a problem after all."

At least that's how she sees it.

Hermione picked up the parchment, walked around the bottles on the table a few times, and already guessed the answer.

"This is the correct potion," Hermione said, pointing to one of the smallest bottles.

Then she pointed to the round bottle on the far right and said, "This will allow me to safely return to the previous room."

This is what was mentioned earlier: "One leads you forward, while the other sends you back to where you started."

As for the other five bottles, two contained nettle wine, and three contained poison.

Lin Yu understood Hermione's meaning: she wanted to give him the potion for the forward journey, while she would go back.

"Why can't we go together?" Lin Yu felt that they could move forward together.

Hermione picked up the smallest bottle, frowned, and said, "No, Professor Snape is stingy. Look, there's only enough for one person, just one sip."

No wonder the smallest bottle is the correct answer; it's because it gives the fewest potions!

Of course not, at least the answer to the puzzle isn't calculated that way.

Forget it.

Lin Yu didn't insist, saying, "Alright, then you can wait for me outside. But how am I supposed to get out later?"

"I'll drink it first, then I'll leave you a sip. Come find me when you get the Philosopher's Stone and return to this room. I'll be waiting for you outside. Or if there are other passages inside, don't forget to come find me again," Hermione said, picking up the round bottle and taking a sip of the potion inside.

"How is it? What does it taste like?" Lin Yu asked with concern.

Hermione thought for a moment and said, "How should I describe it? It's like ice-cold soda, but without any taste. Anyway, it's very cold. I'll head out now."

Before the effects of the potion wore off, Hermione handed Lin Yu the bottle containing some potions and then turned to go to the door.

Sure enough, she successfully stepped over the flames and returned to the giant's room.

Lin Yu also turned around, took the two bottles, and walked forward.

When he reached the flames in front of the door, he picked up the smallest bottle without hesitation and drank the potion inside.

Even now, Lin Yu still thinks Snape is a good person; he just has personality flaws.

Given his trust in Hermione, Lin Yu naturally had no suspicions.

Sure enough, after Lin Yu drank the potion, he was able to ignore the flames in front of him and strode over them.

When he arrived at the last room, he saw a bright red gemstone placed on the platform in front of him.

He knew that it was the Philosopher's Stone.

The Philosopher's Stone has not yet been hidden inside the mirror (Mirror of Erised) by Dumbledore.

It's there.

Without any hesitation, Lin Yu walked over and picked up the magic stone.

At the same time, a system notification sounded in Lin Yu's mind: "Mission completed. Rewards have been sent to your system space and can be checked at any time."

Lin Yu's heart stirred, and he put the magic stone into his Qiankun Ring.

Now is not the time to receive rewards.

So Lin Yu turned around and went back to the potion room. He then drank the potion that Hermione had left behind and quickly caught up with Hermione.

Hermione felt like she had just come out when Lin Yu appeared.

"How is it?" Hermione asked Lin Yu.

Lin Yu pursed his lips, pondered for a moment, and said, "As expected, the potion is very cold."

"That's not what I meant," Hermione said, amused and annoyed, and playfully slapped him.

Lin Yu smiled and took out the magic stone, saying, "Of course it worked. Look, this is the magic stone."

Hermione, however, didn't care about the Philosopher's Stone and asked again, "I mean your mission."

She didn't care what the magic stone was; she was there to help Lin Yu complete his mission.

Lin Yu replied, "Of course it's done."

"That's great!" Hermione finally smiled broadly.

The two then put away the magic stone and began their journey back.

They had to get back before anyone found out.

But as soon as they returned to the room in front of the Devil's Web and opened the door...

But they saw Dumbledore standing outside the door, dressed in his pajamas, looking up at the keys fluttering their shimmering wings. He didn't turn around until he heard the door open, and glanced at the two of them, seemingly unsurprised.

"How about it? Aren't these mechanisms interesting?" Dumbledore asked them with a smile.

Lin Yu and Hermione exchanged a glance. Had they been discovered after all?

"There are very few things I don't know at Hogwarts," Dumbledore said, as if he knew what they were wondering about.

Come to think of it, he is Dumbledore, the current headmaster of Hogwarts. How could he not know?

Lin Yu shrugged, took out the magic stone and handed it over, saying, "We came here to try it out because we found out someone was trying to steal the magic stone. Turns out, while these mechanisms are interesting, they're actually useless."

Dumbledore nonchalantly took the Philosopher's Stone and asked, "Oh? Then guess who's trying to steal it?"

Lin Yu asked, "Is there a prize for guessing correctly?"

System: "Yes, yes. A quest has been triggered: answer the questions of Yao Chen, Albus Percival, Woolfrick, Bryan Dumbledore. Quest complete, reward: Mastery of a Different Flame. Because the host has already cultivated other techniques and can no longer cultivate the Burning Technique, they can no longer obtain the first Different Flame, the Emperor Flame. Therefore, only by mastering a Different Flame can the Different Flame evolve and its origin be shared, meaning you can share your own Different Flame with others (you know what I mean)."