Chinese students at Hogwarts.

Dumbledore's hand gently touched the air.

A line of words that burned and danced like flames appeared under the flick of the palm.

[A place of invisibility that does not appear day or night. Anyone who lives here should enjoy eternal sleep]

Zhang Xiao silently read this line several times and asked curiously:

"Professor, is this the riddle left by Voldemort to open the door?"

Dumbledore laughed heartily, as if he had heard something very interesting, and he was so happy that he couldn't stop laughing:

“Zhang, as I just said, Tom didn’t design this to be turned on.

It definitely has a way to open to let yourself in, but it definitely doesn't leave a riddle for people to guess. "

Dumbledore stretched out a finger and tapped his temple gently.

"But any magic has the most basic foundation. Even this extremely complex compound magic is composed of individual spells.

As long as you can find the lowest level, you can figure out the thoughts of the person who originally set up this magic. "

So high-end?

It's like cracking a password. Others use brute force to crack it, but Dumbledore is different. He directly looked at the security question and used it to guess what he was thinking when he set the password.

The question is how?

Zhang Xiao doesn't understand, but he has a good habit of asking questions without being embarrassed.

"Professor, how did you do that?"

"It's very difficult. It requires not only very advanced magic theories and skills, but most importantly, extremely rich experience."

Dumbledore said easily:

"These things will be given to everyone fairly."

He paused, ended the topic, and turned to the level set by Voldemort's 'Peak Mind'.

"Zhang, then the problem we have to solve now is to find the back door that Tom left for himself and open it."

In the dilapidated hall, the two fell silent again, staring at the illusory wooden door and the flaming words left by Dumbledore in the sky.

This door is very old and looks similar to the furnishings in Gunter's old house.

[A place of invisibility that does not appear day or night. Anyone who lives here should enjoy eternal sleep]

In fact, this sentence is quite easy to understand. Tom's original meaning must be more than this, and it should be much more complicated.

What you see now is what Dumbledore has summarized and condensed after removing the essentials.

"Professor, what this sentence should say is - the room hidden here will not appear during the day and night, and the people who live in it can enjoy eternal tranquility?"

"I think so. The problem lies in the sentence "It does not appear day and night. This is the key to hiding."

Since day and night do not exist, does it mean that it will only open when day and night coexist?

Zhang Xiao's mind immediately jumped out of the dusk line.

Along with the movement of celestial bodies, the morning and evening lines are also constantly moving, which means that there is always a moment or a short period of time when day and night coexist.

No, Zhang Xiao shook his head. If this is really the case, then there is no need to work hard on this room at all.

Because you will always experience the dawn and dusk line twice in a day. In other words, if this is the case, you don’t need to do anything. Just wait here and this room will automatically open twice.

Except for the troll, no one would think that Voldemort would regard such an idiotic design as one of the most proud of his life.

Breaking the goal with force - obviously it's not possible, otherwise Dumbledore would have done it long ago.

Zhang Xiao glanced at Dumbledore with a headache. The old man was looking at the door quietly, lost in thought.

Since Dumbledore got the Resurrection Stone in his previous life, it means that the principal finally solved Tom's mystery.

Was it based on knowledge of Tom?

Compared to Dumbledore, Zhang Xiao's understanding of Voldemort comes from novels. To be honest, Voldemort has not discovered the strength of Voldemort, the most powerful Dark Lord in history.

There was no sense of oppression. Zhang Xiao felt more like a manic psychotic patient holding a gun in his hand.

It was only after I personally participated in the cave that I had a more intuitive impression of Voldemort.

Really having no clue, Zhang Xiao became irritated and prepared to look around. Anyway, Professor Dumbledore made it very clear.

Voldemort was so arrogant about this door that he was so confident that he did not set up any other defenses in the old house.

This was far beyond both his and Dumbledore's expectations.

Because in this way, the two people who were cautious before looked like they were fighting with the air, which was very embarrassing.

Gaunt's old house is somewhat similar to the Black family's old house at No. 12 Grimmauld Place. I wonder if this kind of house was popular at that time.

The color scheme is very dark, the stairs and corridors are very narrow, and the kitchen hall and the like are not decorated, but are built with rough large stones.

The uneven masonry walls are exposed to the outside, giving it a primitive and wild beauty.

There were winding traces on the originally dusty ground, left by snakes, and the large pit was filled with bones of small animals.

Looks incredibly disgusting.

The moon was still hanging high in the sky. Zhang Xiao stared at the bright moon outside through the narrow window, and his mind unconsciously turned to Tom's puzzle.

In other words, he didn't know what he was thinking, he just kept thinking.

There is no day or night. Speaking of which, this window is really small, like a prison cell. How could anyone not like a house that is transparent from the north to the south?

The lighting is not good, can the house be habitable?

This kind of topography and construction is a perfect match in terms of Feng Shui, right? Just like a ghost house.

Hey, fool!

By the way, those who live here should enjoy eternal sleep. What does that mean? Are you burying your Horcrux here?

Turtle, is it really a ghost house?

Zhang Xiao smacked his lips and looked back at Dumbledore. The principal was still thinking hard.

What a great principal. He is over a hundred years old and he still spends all his time thinking about coming to the wizarding world.

Through the narrow window, the stars outside were still there, but the room was very bright, so it was not very clear.

The rest of the windows were covered tightly with thick dust. Only this window could see a little bit of the sky through the broken glass.

Um? like

Zhang Xiao looked at the window, then looked back at the door, his eyebrows raised, as if something was about to come out in his heart.

After thinking about it, he took out his wand and cast a spell on himself. Using his toes, he floated lightly and stopped next to the tall, narrow window.

The history of using glass windows in the West is very early, but due to technical limitations, most of them are tinted glass, but the Gaunt family has expanded it.

Relatively expensive transparent glass was already in use at the end of the 18th century.

Because the exterior walls are made of rough stones, the window sill is extremely thick, and fragments of glass are scattered on the window sill.

Zhang Xiao gently tapped the glass with his magic wand - [Restored to the original state]

As if going back in time, these glass fragments flew up staggeringly, flying towards their original positions like swallows throwing themselves into the forest.

In the blink of an eye, the glass returned to normal. Like other windows, thick dirt covered the entire glass.

But there is a round hole as big as a silver coin in the center of the glass. It is very regular, and you can tell it is intentional at a glance.

"professor."

Zhang Xiao stared at the round hole and spoke very slowly, but Dumbledore listened very seriously without any sign of impatience.

"You said. The house is dark. Do all the people who come here choose to light up?"

Dumbledore's long white eyebrows twitched twice, as if he had already guessed what Zhang Xiao would say next.

He took out his Deluminator again, accompanied by a few crisp clicks.

The whole room was plunged into darkness again, a kind of darkness that made it impossible to see even one's fingers.

The illusory door is there, and it seems to be emitting light, but miraculously it can't illuminate anything.

Magic is so magical that it can ignore the laws of physics.

"I don't know if your guess is right, but we can try-"

The two stood in the dark room, waiting quietly.

It was already late at night when they came over. They had walked through that wilderness before and experienced so many explorations.

Time has passed quietly for a long time.

Suddenly a little light appeared on the dim horizon, and then light pierced the sky.

The intersection of morning and darkness flies across the earth from a distance at an extremely fast speed.

as always.

A small dot suddenly lit up in the dark room. It was only a faint dot at first, but it became brighter and brighter. It was like a small sun rising in the darkness.

The bright sunlight passed through the small hole in the glass, and under the Tyndall effect, it was like a beam of light piercing the sky, and happened to shine on the door.

The illusory door actually acted like a mirror, projecting this beam of light onto the ceiling of the old house at a strange angle.

Zhang Xiao watched all this nervously. He stared at the illusory door with wide eyes, trying to see any changes.

But nothing happened.

Isn't it right? Isn't it so?

Zhang Xiao pursed his lips, feeling a little frustrated but mostly thinking quickly about what went wrong.

"Zhang, don't use this expression. In my opinion, you are already outstanding enough."

Dumbledore suddenly said softly, and he suddenly pulled out his wand:

"Your guess is correct. The sun that represents the day is now there.

Then all we need is to make up the night. "

The gray-haired old professor seemed to be holding a magic pen and splashing ink in the air.

"It's just that there are some things that only old people understand. Back then, Tom learned the first celestial magic - the starry sky!"

The top of the head suddenly rolled, and the dark ceiling seemed to be cut open by a knife, just like the ceiling of the Great Hall of Hogwarts.

Revealing the bright stars.

At this moment, the illusory door suddenly changed!

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