Harry walked to the edge of the lake, half squatted down, and sniffed: "Something was once stored here."

"Infernal corpse?"

This is a kind of dark magic creature that no matter which professor teaches the Defense Against the Dark Arts class, it is only introduced in the textbook but no real object can be produced. Even with the vastness of the Forbidden Forest, it does not exist.

Only pure black magic, using the body of a dead person as material, can create a creature that can hardly be born naturally under natural circumstances.

Dumbledore approached and nodded.

"Yes, there used to be many Inferi here."

Harry put on his dragon-skin gloves and tentatively touched the lake water: "Did you destroy them all?"

"No." Dumbledore shook his head. "When I arrived, there was not a single Inferi here."

Harry was stunned and turned back: "I think you should know what this means."

"Of course I know." Dumbledore smiled, "So I went to confirm it. I don't know if Tom was too confident or too naive. He only took away the Inferi and checked whether his Horcruxes were still there, but he did not take the Horcruxes with him."

Harry continued to touch the lake water: "Maybe he feels that it is safer to put the Horcrux here than to keep it next to him."

"After all, he has to face two people who are stronger than him." Dumbledore gestured with numbers.

When the gloves touched the lake water, there was a burning sound, and the dragon skin was corroded visibly.

Harry pulled his hand back. "That's a big deal."

"The whole lake is enchanted."

Dumbledore agreed: "When Voldemort was at his most powerful, he was not much weaker than me. At that time, he could almost do whatever he wanted."

"So Harry, how do we get across the lake now?"

Harry looked and met his gaze.

The two glances met, both silent.

Harry said helplessly: "So this matter also needs to be handed over to me?"

"Haven't you been here once?"

"Harry, I want to see the results of your studies." Dumbledore raised his hand, "Besides, I, an old man, have just been injured."

Harry looked off into the distance.

The demon hunter's senses spread out.

The darkness in this space is not just "a shadow without light source", it is a magical force, a manifestation of Voldemort's obsession with "hiding and remaining unknown".

The light from the flashlight is obstructed.

The same goes for Demon Hunter Senses.

But as Dumbledore said, all magic will leave traces, the magical veins flickering like breathing lights, Harry reached out and grabbed it.

"This way." Harry called.

They walked forward, circling the edge of the Black Lake. The magic in the darkness lingered on every wall of the cave, causing the wall to loop every thirty meters, making it look like they were standing still.

Harry ignored this and kept walking.

After more than ten minutes of silence, he stopped and said, "We're here."

Dumbledore said nothing.

Harry took a deep breath, stretched out his hand, and reached forward - there was a rustling sound, and he pulled back hard. The invisible thing in his hand suddenly appeared. It was a chain covered with copper rust, lush green, and looked like a poisonous snake.

He took out his wand and tapped it lightly on the chain.

With a whoosh, it slid backwards, dragging something out from the bottom of the lake.

When the chain coiled six times on the ground, the object being towed appeared in front of the two of them. It was a small boat, pitifully small, and you could still see its original appearance, a light blue wooden boat for children.

"He's very particular about his childhood." Harry looked at the ship.

Dumbledore pushed his glasses and said, "Every adult spends every day in regret. The past is much stickier than honey. It is hard to get out of it even if you want to."

"Even Voldemort, he is the same."

"only……"

He paused and shook his head helplessly, "It was me who failed to discover it in time and guide him properly."

"I don't think this is your problem." Harry stepped onto the shabby wooden boat, which swayed slightly.

Dumbledore also walked up: "I am the headmaster."

"You were only the Deputy Headmaster at the time, and would it have been the same if it were me?" Harry asked him back.

The boat started to move towards the other side.

Harry stared at the lake surface without any ripples: "You have to admit that there are always some people in this world who are born with bad tempers."

"He took root and was not pruned. It was inevitable that he would be like this now."

"What does it have to do with you?"

Speaking of this.

He paused and said, "Professor Dumbledore, you take yourself too seriously. You always think that your sneeze can affect the whole world."

Dumbledore chuckled. "Is this the third time you've lectured me?"

"Harry, of course I know that."

"But who doesn't have a vision of a better future? Especially when you find out you have a good chance."

The Black Lake looks large, but it is very fast to sail on.

As the two of them chatted, they soon arrived at their destination.

The two men walked down from the boat carefully.

This was an island in the middle of a lake, with very artificial traces - Voldemort had randomly cut off a piece of black marble and thrown it here. It was completely empty, without any decorations, except for a stone pedestal in the middle that emitted a faint, creepy green fluorescence.

They approached.

On the stone base stood a head-sized stone basin filled with lush green liquid, from which the phosphorescence came.

"Three." Harry stared at the ground in front of, behind, and around the stone seat.

Dumbledore was stunned: "What three?"

"I said, there are three traces." Harry said softly, "Luckily this place is protected by magic, there will be no traces of natural erosion, even the traces above are protected."

“A very ancient one.”

"It was more than ten years ago. I can't tell what kind of person he was."

“Two are very new.”

"One was three months ago. It seems that Voldemort came here right after his resurrection?"

"One was from over a month ago. Is this yours?"

Dumbledore stared at the ground, trying to open his eyes wide, but he did not have Harry's meticulous observation ability, and could not see anything except the gray ground.

"It seems that Voldemort is weaker than I thought." Harry laughed sarcastically, "At the peak of his power, he was still worried about the Horcruxes. Did he come back to check?"

Dumbledore shook his head: "This is a Horcrux."

Harry raised his head and looked at the stone basin: "The Horcrux is hidden in here?"

He flicked his wand.

In the stone basin, the medicine liquid gurgled and struggled to fly out, but the stone basin restrained it and prevented it from taking off.

"Same contract as the door." Harry put his wand away. "How did you solve it?"

"Drink it?"

Dumbledore nodded and conjured up a goblet. "You are very perceptive. Yes, drink it. But this potion is too painful. Voldemort likes this kind of torture. Godric is just a portrait. He can't force me to finish the rest of the potion."

"Harry, wait a minute..."

Harry waved his hand: "Wait a moment."

He stretched out his hand and touched the stone basin - a layer of magic blocked him, an invisible wall stopped him.

Harry took out his wand again, and after solving the spell bit by bit, he continued to reach out his hand and lightly touched the light green liquid, then retracted his hand and sniffed it at the tip of his nose: "It's not very toxic, but it has a strong hallucinogenic effect."

He licked up the liquid medicine.

The potion's effects take effect.

Harry deadpanned, "It seems he found inspiration from the Resurrection Stone? Painful memories."

"I'll do it."

He held out his hand to Dumbledore.

Dumbledore hesitated: "Harry, can you really?"

Harry nodded, took two steps forward and snatched the goblet.

Scoop up a cup and drink it.

"If it's Professor Snape, he should be able to tell what ingredients are used in it right away." Harry sighed and scooped up another cup.

The second cup, the third cup...

Dumbledore stared at Harry nervously. He could no longer hold on after drinking the fourth cup.

Harry propped up the stone basin and smacked his lips: "Uris stalactites, half-ear grass sprouts..."

"Is it an improvement on the formula of Veritaserum?"

“What a genius idea.”

The fifth cup, the sixth cup...

Dumbledore looked at Harry and laughed.

"And moonstone powder." Harry was still analyzing the potion formula. "Do you just want people to feel their greatest pain in the calmest state?"

The tenth cup, the eleventh cup…

The bottom of the stone basin was exposed, revealing what was inside - an amber octagonal pendant box with an "S"-shaped small snake inlaid with emerald in the center.

"Harry, how do you feel?" Dumbledore asked with concern.

Harry threw away the goblet, took out a bottle of whiskey from the Sorting Hat, uncorked it, and gulped down some. "It tastes a bit unpalatable. Tom's idea is really bad."

He paused and looked at Dumbledore: "Don't worry, I'm fine now."

"This potion is far less toxic than the ones I drank myself, it just tastes terrible."

The look in his amber vertical pupils was clear.

Dumbledore heaved a sigh of relief, took out the locket from the stone basin, turned his head and looked at the Black Lake: "The Inferi there should be the backup left by Voldemort, but he..."

Harry frowned and stared at the locket. "Professor Dumbledore, we seem to have been fooled."

He could not sense any dark magic or soul from the pendant box, and there was even no response from the Horcrux on his forehead.

And there seemed to be a letter in the pendant box.

Dumbledore was stunned, lowered his head, and looked at the locket.

He also realized it.

"Voldemort switched the Horcruxes?" Dumbledore frowned.

Harry took the locket and opened it. "Then let's see what the taunting letter Voldemort left us looks like."

There was a crumpled note stuffed inside.

"To the Dark Lord:

I know that I will be dead when you read this letter, but I want you to know: it was me who discovered your secret, and I have taken the real Horcrux and destroyed it as soon as possible.

I will risk my own death, for you are but a mortal of flesh and blood when you meet your destined match.

RAB”

The above content stunned Dumbledore and Harry. It was completely different from anything they had imagined before.