"What do we do now?" McGoth: They returned to the door of the lounge, and a group of people stood in front of the portrait of the fat lady, bewildered.

McGoth walked over to the portrait and knocked on the rough eagle-shaped bronze knocker again, the problem was the same as before, it seemed that it was possible that the Ravenclaw students could only make one problem.

"The answer is to use a Traceless Stretching Spell at the target point."

"Wrong!"

McGoth was helpless, it was the most likely answer he could think of, and he knew what the Ravenclaw guys were setting up with their brains.

"I've read books about disillusionment, but there is no explanation of this situation in the book, which means that the problem does not exist, and what do the Ravenclaw people want to do when they come up with a problem that does not exist?" Hermione finished her sentence with a cannon.

"Maybe they just don't want us in." Harry said, staring blankly at the knocker.

"It can't be." Hermione looked at them earnestly.

"Ravenclaw people think they're the smartest, and they're more confident and even arrogant, and they must have set up an answer that would solve this problem perfectly, otherwise they wouldn't have asked the question." Hermione said confidently.

"Oh, then you're smart too, why can't you untie it." Ron scoffed. Hermione's face flushed.

"Wait, Ron, don't talk nonsense, this question is probably all Ravenclaw together, and it's incredible that Hermione could really think of an answer alone. And it occurred to me that since they were so smart, would they be set up to solve the problem with Muggle ideas, not wizards, knowing that all of us subconsciously use spells, potions, and other magical ideas to think of the answer the moment we see the problem. Magos had a flash of inspiration.

Hermione, who was angry, couldn't help but sulk when she heard McGoss's words, ignoring the others, and lowered her little head to think about the feasibility of McGoss's words.

"But Muggles don't know magic, so what can they do about it?" Dean. Thomas said. McGoth shook his head, he just couldn't think of it, so he would say what everyone thought together.

While a few of them were thinking about it, not all of them were interested in undoing the knocker, Lavender. Brown pulled her friend Parvati. Patil whispered as he waited for someone who could answer the question to show up. Seamus stood next to Neville and happily talked about the World Cup, and Neville listened with a confused expression. Harry and Ron also tried to think about it for a while, and then gave up, Harry watched the others in a daze, and of course it was possible that he was still thinking about whether Ron was going to argue with Seamus about which was more interesting, Quidditch or football.

"I thought of one, but I don't know if it works, and I'm just guessing." Hermione whispered to McGoss.

"Oh? What it is, talk about it, even guessing doesn't matter. ”

"Do you think Einstein's theory of relativity is the answer?"

"Relativity?" McGoth shook his head in confusion, Hermione talked about the concepts, principles, effects, etc. of general relativity and special relativity from beginning to end, and he looked at her blankly, completely unaware.

Probably seeing that McGoth was confused, Hermione stopped halfway through speaking, "I'm guessing this too, the reason is that I don't know why I suddenly thought of this word, you go and try it." ”

"Eh, why do you want me to try, you can just say what you come up with?" McGoth didn't understand.

"I'm guessing, it's okay to answer wrong, what if they answer correctly and they ask me the reason, I can't tell." Hermione's answer made McGoth feel that it was a good reason, but why did he feel the urge to cry.

"I don't know why......"

"It's okay if you're thick-skinned anyway......"

He watched Hermione say this with a serious face, and subconsciously touched his face, "Well, it's quite thick. Glancing at her fiercely, he knocked on the knocker again. Everyone stopped communicating and looked at him.

"Problem ........."

"The answer is relativity." McGoth said indifferently.

The knocker didn't sound again, and everyone couldn't help but cry out.

McGoth gave Hermione a thumbs up. Halisimo and other Muggle people had heard of the great term of relativity, but now they really couldn't understand it when it came to magic, and they all came up to him and asked why, how did he know the reason, and he casually guessed and ignored them.

"Dragon scum!"

This time the fat lady opened the door completely, and everyone climbed in with a shout, and was very happy. McGoth went in last, and he held the portrait by his hand to prevent her from closing the door, and the fat lady glared at him and stared at him directly.

He stared at the knocker, wondering how Ravenclaw had worked it out, and how he couldn't get it off when he pressed it. He took out his wand and used the Alaho hole on the door knocker, and several commonly used spells such as the force was tight, and the sound fell to the ground, but he couldn't take it down.

Hermione walked over and said that it should be a spellbreaker, but that spell wasn't something they could use in their first year. McGoth reluctantly let the fat lady close his hand.

"Hermione, I'd like to go to Percy's side and see if all the knockers are the same."

"But Professor McGonagall won't let us go, McGoss, we'd better stay here and wait for the professor to let us out."

"It's okay, Professor McGonagall doesn't know what happened today, she can't let everyone stand outside the common room for an afternoon, and she doesn't know when Headmaster Dumbledore will be back, although the professor says he's already on his way back, but what if there's a traffic jam."

"Traffic jams?" Hermione's eyes widened suddenly.

"Uh, slip of the tongue, slip of the tongue, I mean mistake." McGoth quickly changed his tune.

"Okay, but I'm going with you." With that, she walked in front of him, and McGoth quickly grabbed her, joking that he would go to Percy's side, but he wanted to go to Hufflepuff first.

"Wait, Hermione, I'll go alone this time, Fernand will definitely be very strict today, what if I am discovered, it is better to go alone." Seeing Hermione think for a moment and nodded, McGoth hurried out of the lounge, but she couldn't give her a chance to change her mind.

After Harry and they were followed last time, he went out and took a good look at Hermione to see if he had come out before taking out the map of the living spots, and after reciting the spell, he looked at all the Hufflepuff students, they didn't know each other much, no way, they didn't usually interact much. Finally, he looked at Cedric, who was in third grade. Diggory, the deepest Hufflepuff in his image. Write down his location, carefully avoiding Filch, and slowly walk towards the third-year Hufflepuff common room.

The Hufflepuff lounge was hard to find, and to be honest, if it weren't for the bunch of them standing together, McGoth really didn't expect their break room to be in a utility room.

"Gryffindor? What are you doing here? You dare to run around casually, and you are not afraid of being caught by Filch. As soon as McGoth appeared the Hufflepuff people, he saw it and asked in some surprise.

Luckily, they weren't as impulsive as Gryffindor and Slytherin, they just looked at him curiously and didn't rush over to flatten him, even though they had beaten each other up just now.

"Hello seniors, I'm here for Cedric. Diggory. "McGoss looked very polite.

"You're looking for me?" A tall and handsome young man walked out of the crowd.

"Hello, you're Cedric's senior?"

"Yes, I am, what's the matter?"

"Well, senior, can we go outside and talk." Listening to McGoss's words, Cedric smiled, did not refuse, and walked out of the utility room with him.

"Let's talk about it now." Cedric showed no trace of impatience.

"That's right, senior, I think ......" Unlike Noonyu's mystery to Ravenclaw, he told Cedric all his plans, and no one who could enter Hufflepuff was the kind of cunning person who would betray people, and McGoth still knew this.

"That's it, I want to use the students of the four colleges to organize this off-campus action, senior, are you interested?" McGoth looked at him expectantly, and he felt that no one should refuse his plan.

And so it is, Cedric. Diggory was thrilled to hear his plan, but he didn't immediately reply, just said to think about it first, and then asked him how many people he was going to attend the event.

"There are eight of them now, and I've contacted Eddie in second year from Ravenclaw. Kamitchell. At the moment, there are five of us Gryffindors and two Slytherins, and they are freshmen, and I haven't thought about inviting them for the time being, there should be three or four Ravenclaws, I thought that ten people would be enough, but then I thought it was too simple, and I should add a few more. ”

"In this way, I'll help you find two more people in Hufflepuff, I don't think you're that familiar with our academy, but I'm a little curious, that's where you know about me, aren't you afraid of me telling the truth, you know, I don't think even if we just broke the school rules in a group fight between the four academies, it won't be as serious as you planned."

McGoth shook his hand happily at first. Then he smiled and said that if he talked about trust, he trusted Hufflepuff the most, even if there were not so many Gryffindors, and Cedric seemed very happy to hear it. In the end he said that he didn't think about it that much, and that he felt that he had just heard of him, so he came to him, and if he didn't agree, he would find someone else.

McGoth then told him that he would meet in a secret room when everyone was all over in a few days, and when Cedric asked where it was, McGoth smiled and said that he would know when the time came, and he didn't care. McGoth then left, and when McGoth left shortly after he left, Cedric returned to the utility room and suddenly remembered that they were all in the utility room, how did he find them? It doesn't look like he happened to come looking for him. It might have been told by the seniors, and he didn't say that there were brothers Fred and George in attendance, so it wouldn't be surprising that he knew. He thought to himself.