The Years Welding at Hogwarts

The tall buildings made of crumbling broken furniture looked like they should have been thrown in by the house elves after Hogwarts was eliminated in the course of thousands of years of operation.

In addition to broken furniture, there are thousands of books.

Noah glanced at the covers of these books and found that many of them were about the cultivation of magical animals. It was hard to tell that these male wizards really liked learning.

Why can Noah tell at a glance that these are hidden by boys?

That’s because… wizards, strictly speaking, should be considered a type of magical animal, right?

Magical animals are cultivated and reproduced, you understand?

Only men understand men.

Several winged slingshots and wolf-toothed flying saucers were hovering feebly over the mountains of forbidden objects. Broken bottles contained long-solidified potions, as well as some messy little gadgets.

Noah even saw several rusty swords and a blood-stained axe.

Picking up the ax and weighing it, Noah had a satisfied smile on his face.

The magic circle unfolded and he casually threw the black cutter in his hand.

After picking up a few more decent weapons, Noah stopped his hand at the right time. After all, he didn’t come here to scavenge, but had more important things to do.

After walking back and forth in the maze-like garbage square for an unknown amount of time, Noah finally stopped in front of a big cracked black cabinet.

If he remembered correctly, the place recorded in the original work should be here.

Noah’s nose moved slightly.

Ah, smell it.

It was Shirley, wrong, it was the disgusting and evil smell of black magic.

Turning left onto another path sandwiched among garbage piles, Noah first saw a large cabinet with blisters on the surface, as if strong acid had been poured on it.

He opened the creaking cabinet door, and a foul smell hit his face – there was a cage hidden in the cabinet, and an unknown magical creature was once locked in the cage.

Noah’s eyes stayed on the skeleton with five legs for a while. If he guessed correctly, this thing should be a five-legged monster.

I didn’t expect there to be such a dangerous creature in Hogwarts, but that thing was already dead.

Otherwise, with Noah’s current strength, he might not have to explain here today.

Although he had been dead for a long time, the bones still exuded a strong stench, and Noah closed the cabinet door in disgust.

After searching for a while, he found the ultimate goal of his desperate night trip – a rusty crown next to the broken bust of an ugly old wizard nearby.

Noah’s eyes slightly bent downward into a nice arc

“Got one, five left”

……

When I came out of the Room of Requirement, curfew was long past.

The whole castle was in silence.

After twisting and turning several times in the complex corridors on the eighth floor of the castle, Noah finally realized that he might be fucking lost again.

There was a slight sound of footsteps coming from the corner at the end of the corridor. Noah’s figure walked through the corridor like a ghost, and climbed out of the window in time before the figure at the corner appeared.

Noah originally wanted to take a leap of faith and return to the first floor of the castle, but he suddenly remembered something interesting.

So he stopped.

He was like a big black spider crawling on the outer wall of the castle until he reached the west tower of the castle where the Ravenclaw common room was located.

Back in the corridor again, Noah stood in front of an old smooth door panel, curiously looking at the strange eagle-shaped bronze door knocker embedded in the door panel without a door handle or keyhole.

He stretched out his hand and knocked on the door. The eagle’s beak immediately opened, and instead of making a bird call, he asked in a gentle, musical voice:

“Phoenix or fire, which one comes first?”

This sudden sound was like a bomb exploding in such a quiet environment.

Fortunately, at this time, all the students who were still in the common room had fallen asleep, and those who were not in the common room would definitely not Choosing to wander around here.

However, for safety reasons, Noah climbed out of the window again after the sound rang.

When he confirmed that there was indeed no one else nearby, he returned to the door panel.

The door knocker asked What came out were the questions that appeared in the original work. It seems that this door knocker is not very powerful. It can only select specific questions from a limited question bank to answer.

“A cycle with no starting point”

“Makes sense.”

After the door knocker finished speaking, the door opened quietly, revealing the Ravenclaw common room.

This is a large circular room. Looking from the door, you can see that the walls inside are open. Elegant arched windows were hung with blue and bronze silks.

But Noah did not walk in, but stood at the door, holding his chin, looking thoughtful.

“Questions and answers that are purely text-based like this are generally quite subjective. Words can have multiple meanings and interpretations, so starting from different perspectives will lead to different answers.”

“So in such a situation, how do you tell whether an answer is correct?”

The eagle head on the door knocker opened its mouth, but did not make any sound. It looked thoughtful, as if it had fallen into a state of thinking after being rendered speechless by Noah’s question.

“As far as I know, Muggles generally refer to these purely text-based questions with multiple answers as subjective questions. In addition to subjective questions, there are also objective questions.”

At this point, Noah was completely confused,”Generally speaking, the most common objective questions are mathematical questions.”

The knocker was silent for a few seconds,”But simple mathematical calculations cannot reflect a student’s wisdom.”

“Simple?”Noah let out a contemptuous sneer,”Who said math problems are easy?”

He gave an example to the door knocker.

For example: a solid has the circular domain x^2+y^2≤1 as its base, and the cross-sections of the solid that are perpendicular to the x-axis are all squares. Find the volume of the solid.

This is mathematics Is there a problem?

There was a confused expression on the eagle head of the door knocker.

Looking at the ring-like door knocker, Noah showed a scheming evil smile.

He sat down directly at the door of the lounge,”I happen to still have some time, so let me tell you what advanced mathematics is.”

Fortunately, even though such a long time has passed, perhaps because of the two time travels, the memories of Noah’s first two lives are still clearly presented in Noah’s mind as if they were engraved on his soul. In his mind, even some long-forgotten memories were brought back.

For example, he watched Teacher Tang’s math class on Bizhan when he was taking the postgraduate entrance examination.

More than an hour later, there was a sound of slight footsteps. It sounded in the distance, from far to near, gradually approaching the direction of the Ravenclaw common room.

“It’s getting late.”

Noah stood up smoothly, patted the dust on his clothes, and at the same time quickly moved his legs that were a little numb from sitting cross-legged.

“I’m going back now and will come back to discuss math problems with you when I have time. It was a pleasure chatting with you today.

The knocker responded politely,”See you next time.””

His figure disappeared out of the window.

Before leaving, he did not forget to help the Ravenclaw student who had obviously just returned from a night trip to close the door of the lounge.