Dumbledore's tone was extremely sincere.

Harry was suspicious: "Really?"

"Of course, the professors don't have that much energy to search every corner of Hogwarts." Dumbledore nodded and smiled slightly, "Besides, this bathroom has been abandoned for fifty years and almost no one uses it."

"We're not the perverts breaking into the girls' bathroom right now."

Harry walked over to the faucet and said in Parseltongue, "Turn it on."

A dazzling white light flashed.

The faucet twisted and crawled to the left like a snake. The root canal pulled the sink, causing it to vibrate hummingly, and twisted open to reveal a circular door. Of course, it looked more like the entrance to a water pipe.

"This is really the case." Harry rubbed his face with a strange expression, "What on earth did my senior Tom do to find the entrance to the Chamber of Secrets?"

It's late at night and everyone is asleep.

When the Ravenclaws began to march towards the restricted area.

Hufflepuffs haunt the kitchens.

The Gryffindors were thinking about what big thing to do.

Tom searched carefully in each girls' bathroom.

"Okay, Professor McGonagall, please take Mr. Potter back." Snape flicked his sleeves, "This is not a place for him to stay..."

"No, we still need Harry," Dumbledore interrupted.

Snape took out his wand and looked at him coldly: "You know what's underneath!"

"But we may also need Parseltongue." Dumbledore took out a thumb-sized crystal bottle from his robe, which contained a thin layer of crystal clear liquid. "Don't worry, I have Fawkes' tears with me."

Harry's eyes lit up.

Phoenix Tears.

A rare material with powerful healing properties. It's not on the banned list, but it's not available for sale even in Diagon Alley.

"Harry, would you like some?" Dumbledore noticed Harry's gaze.

Harry nodded, "Sure, as payment for being forced to take part in this, how about that?"

Demon hunters always "never leave empty-handed".

"Then it's settled." Dumbledore waved his wand, and the spell took effect on Harry and Snape. He turned his head and looked at McGonagall, "Minerva, please stay here."

Mag nodded.

The three of them got into the pipe, and the spell effect allowed them to swim slowly forward.

"Harry." Dumbledore said more information, "I asked Madam Myrtle, the student who died fifty years ago. She said that she only saw a pair of yellow lantern-like things, and then died."

"Can you guess what it is?"

A couple?

Those are the eyes.

Yellow, staring at each other is death...

Harry quickly found the corresponding name in the list of dark magic creatures: "Is it... a basilisk?"

Dumbledore nodded: "That's right."

"So be careful when you go down there, and close your eyes." Snape said, mockingly, "Don't just stare with your eyes open like a brainless troll."

"You don't need to do anything."

"Dumbledore and I can handle it."

"Can you please leave the basilisk's skin, teeth and spine to me?" Harry requested.

"As long as you behave yourself," Snape immediately agreed on behalf of Dumbledore, "and don't cause us any trouble, you can take those useless things back and play your armor game."

"Thank you for your kindness." Harry praised with a deadpan expression.

Snape snorted and turned his head away, ignoring him.

They landed quickly.

At the end of the water pipe is a natural cave, which is damp, dark, and eerily silent. There is no sign of any living life, only the ticking sound of water droplets falling from time to time.

Snape waved his wand, lighting up the surroundings.

The ground was covered with dense corpses, mostly small rodents, with occasional fish bones.

"It seems that our basilisk diet is not good." Harry commented simply, "We have lived for thousands of years and can only eat these things to fill our stomachs. Tsk."

Dumbledore waved his wand, rolled up the bones, threw them into the shadows, and led the way forward.

They soon passed a flat area.

Harry stopped.

"What's wrong?" Dumbledore's expression was serious, and magic began to gather in his hands.

Harry gestured: "There used to be something here. It was very big, at least twenty feet long, and had a very faint magical smell."

"The basilisk rests here?" Dumbledore frowned, staring at the flat ground which, in his eyes, was almost no different from any other place.

"No, it should be a snake slough." Harry shook his head, squatted down, and wiped the ground with his hand. "It was just taken away. The traces are very fresh. It's less than a day."

He looked up at Dumbledore.

"Or rather, when the Quidditch game starts."

"He guessed that we would find the secret room and made preparations in advance."

"I'm afraid we'll get nothing this time."

Dumbledore frowned: "This is really not good news."

They continued to move forward.

They were almost out of the castle when they reached the end, a solid wall with two lifelike stone snakes carved on it. Their eyes were made of sparkling emeralds, and the craftsmanship was so exquisite that they looked as if they were alive.

"Open," Harry said the word again in Parseltongue.

A flash of emerald green light appeared in the eyes of the two snakes. They coiled and crawled to the side, moving the stone wall away, revealing a wide passage.

Inside was a hall, dark, cold, and filled with a strong and sinister atmosphere.

Is that the smell of a basilisk?

Harry frowned, this was really uncomfortable.

Dumbledore waved his wand, cast a spell on them to give them a layer of protection, and walked in alone. After a while, he called out to Harry and the others, "Come in, it's safe here."

The lobby is larger than it looks from the outside.

Thirteen pillars support this huge structure. On each pillar, there is a carving of a snake, coiling, entangled, and opening its mouth to hunt, and each expression is different.

And, at the end of the hall, there is a huge portrait carved on the wall.

An old man with monkey-like appearance, sparse beard, and a robe that was so long that it seemed ill-fitting.

"Is this Slytherin?" Harry walked up to Dumbledore.

Dumbledore nodded.

"I thought he'd look like Voldemort," Harry commented casually, taking another step forward. "I'm going to try talking to him again."

"Maybe it will bring out the basilisk."

Dumbledore raised his wand.

"Open!" Harry closed his eyes and spoke Parseltongue loudly.

There was a rumbling sound in his ears, but nothing happened. Only a faint breath of magic surged out, and there was no other breath.

Dumbledore patted him on the shoulder: "There is no basilisk here."

Harry opened his eyes and looked.

Slytherin's mouth was wide open, the dark hole occupying nearly half of his face.

"Let's go in and take a look." Dumbledore waved his wand, and the three of them flew up, following Slytherin's mouth and into the statue.

It is a room no smaller than the public lounge.

Dry and clean.

But it was completely empty. There was not a single book on the bookshelf, and the cabinets that stored rare materials had all been cleared out.

"Senior Tom is really clean." Harry took a careful look and didn't find anything else valuable. "I am ashamed of myself."