Ding Qianye followed the woman named Feiyan and walked towards the north of the alley, well, he can't tell the difference between southeast and northwest now, so he can only follow the direction pointed by Sister Feiyan, but according to the prompt sign next to the alley, it should be the direction of north.

No way, looking at the squirming cat pet in his arms, Ding Qianye felt the deep malice of this world, forget it, the male is the male, according to Sister Feiyan on the road, this has already been dripping blood and recognized relatives, so let's make do with it first.

"Sister Yan just now, when you said that this contains cause and effect, do you mean the things that these businessmen sell?"

Ding Qianye pointed to the falling things that could still be seen everywhere on the road, including many sparkling gems and exquisite jewelry.

Maybe he thinks that this baby is doing quite well, and he is still a freshman, Sister Yan didn't embarrass him too much, after hearing the question, she thought about it a little, and picked up a gem on the ground that had not yet had time to be cleaned up by the team.

"These are not things from our world, and if they are accidentally contaminated, they may involve cause and effect in other planes."

"Other planes?"

Ding Qianye's pupils shrank, although he had reluctantly and slowly accepted the setting of the current Hero Academy, but suddenly pulling to other planes still made him a little at a loss.

"Yes, another plane."

Sister Yan's hand twisted slightly, and a beautiful flying machine slowly landed in front of the two of them, and a beam of light collected the gem into the cabin, and then the mechanical arm seemed to wave a military salute, and then turned into a ray of light and flew into the buildings in the sky.

"The space we are in now is just one of many planes, including the Earth we come from."

A delicate model appeared in the air out of thin air, and an aqua blue planet above it was slowly rotating in the center, and as it slowly rotated, some small black dots slowly appeared on the planet, and some black dots were slowly dissipating.

"Look, this is what the earth looks like now, these black dots are the doors of the plane, the space that connects our world with other worlds, so we humans are not alone."

"I see, the things those merchants sell are all things from other planes, and they don't belong to this world, so it's dangerous?"

Ding Qianye stroked the kitten in his pocket, and he didn't expect that this was not a product of this world.

"That's right, just because you don't belong to this world, you have to know that different planes have their own rules, if there are more things invaded by outsiders, the more carrying and repulsive power this world will be, and of course, the more important is cause and effect."

"Cause and effect?"

Ding Qianye still doesn't quite understand the origin of these, how can it be related to cause and effect.

"Take this cat, for example."

Sister Yan pointed to Zhengxiang's kitten sleeping in Ding Qianye's pocket.

"If it doesn't come into contact with you and doesn't hatch, it won't take 24 hours for the plane to slowly clean up these things that don't belong to this world, but once it signs a contract with someone from this plane, then it has a connection with this world."

"The balance of the plane needs to be maintained, and at the cost of your future, your future will change, and this is the cause and effect that this cat has brought to you."

"My future?"

Ding Qianye looked at his palm, the palm prints on it were still the same as before, well, he didn't know what his palm prints were like before, who had the kung fu to always look at these things.

"When you get to class, the teacher should give you a more detailed explanation, but fortunately, it's just the beginning, remember to go to the cause and effect laboratory for a stroll when you have time, your companion should already be waiting for you."

The two looked at the end of the alley, where there was a lot of traffic, and some strangely dressed pedestrians and various vehicles could already be seen.

"Finally, I would like to tell you one more thing, it can be regarded as a warning to newcomers, these things are better not to touch, if you really want something, there are things in the academy that remove any plane of cause and effect."

Sister Yan pushed Ding Qianye, whose head had become paste, and a shadow was already waving at him not far away.

"I still don't quite understand, but I'll definitely go over there and take a look."

Ding Qianye bowed to Sister Yan, if she hadn't met this Sister Yan in the morning, she might really have a lot of bad things.

"Thank you very much for your help, Sister Yan."

Zhao Feiyan raised her watch to look at the time, nodded at him, and then turned around and walked to the back, leaving Ding Qianye with a beautiful back, as she walked, rays of light shot out of the void, sweeping away some of the remaining residues.

"Fortunately, you're fine, I didn't expect the gate to be so unreliable this time, and I passed you here without paying attention."

Ouyang Ruoxue gave Ding Qianye a tissue, and also wiped the dust on his head for him, looking at the back that Ding Qianye had been staring at getting deeper and deeper, and remembered something in a trance.

"Don't look at it, that's Senior Sister Zhao Feiyan of the Chengguan Reserve Brigade, you are really lucky, fortunately you met your own people."

"Your own people?"

Ding Qianye turned his head to look at Ouyang Ruoxue, who was slowly wiping the dust for him, shouldn't the management departments here be all from the Hero Academy?

"Yes, Monday, Wednesday and Friday, our college is on duty, and the rest of the time is outsourced."

"What? Do we have outsourcing here too? Is it the kind of work that is contracted to others? ”

"That's right, there is a shortage of manpower, sometimes people from other planes will come to Hero Academia to work, oh, by the way, including the vendors in this alley, do you think we don't need to rest?"

How can you hear the word outsourcing so down-to-earth?

"Okay."

Ding Qianye raised his forehead, and the first time he entered this city, he was really impressed.

"Let's hurry up, it's half past seven, let's go to the cafeteria first, and talk about other things on the way."

Ouyang Ruoxue looked at her watch and waved her hand, a quaint car marked Hero Academy stopped on the side of the road, Ding Qianye looked at the cockpit above curiously, and there was no one.

A card was taken out of Ouyang Ruoxue's backpack and swiped on the door, and with a mechanical sound, the door opened, and there should be four people sitting inside.

"Hello Miss Ouyang, the trip is expected to take thirty minutes, do you want to start the trip?"

Ouyang Ruoxue, who pushed Ding Qianye in, sat inside, instructed him to fasten his seat belt, and made a gesture at the round-faced man, who nodded.

"That's too high-tech, isn't it?"

Ding Qianye looked at the scene inside and outside the car, which was incompatible with his previous life, outside the window, strange shops and things that didn't look like they were on the earth abounded, and suddenly came to another space.

"Is Hero Academia a plane? And what's going on with that gate just now? ”

Thinking of what Sister Yan told him, he turned his head and asked Ouyang Ruoxue, now his mind is a little confused, he still has to find someone who understands.

"You can teach, Hero Academia doesn't exist on Earth, and if we calculate it now, we should be a few dimensions away from Earth."

Ouyang Ruoxue felt that it was nothing when she was asked like this, maybe it was due to habit, she took out a notepad from her bag and used a pen to point a small dot on it.

"The earth we live in is a four-dimensional space, you should understand this truth, right?"

Ding Qianye nodded, dotting, line, and time plus time, four-dimensional.

"So now I'm going to draw this point assuming it's a three-dimensional space, so it's not hard to imagine, right?"

Ouyang Ruoxue looked at Ding Qianye again, this requires a certain amount of spatial imagination.

Ding Qianye nodded hard, in his mind, this point was slowly turning into a spherical space, and Ouyang Ruoxue drew a dot in another place on the paper.

"What if I fold this piece of paper in half? These two points happen to come together? ”

With Ouyang Ruoxue's description, she folded the paper in half, and it happened that the two dots coincided together, and the paper was a little transparent, and from the edge, it looked like the two dots coincided into one dot.

Ding Qianye nodded, he somewhat understood.

"If the plane is understood as a four-dimensional space, and the four-dimensional space is regarded as a point again, the more times the paper overlaps, the more overlapping it is, is this the origin of the plane?"

"That's right, smart!"

Ouyang Ruoxue drew more dots on the paper, overlapping them in a strange way, and the dots slowly overlapped until the paper could no longer be folded, and there were already many dots overlapping on it.

"My folded hand now is equivalent to an unknown force, of course, the academy is also researching what caused the current situation of overlapping planes, but you have to count in your heart, the current piece of paper is just one side, and the number of faces in space, as well as the time dimension that is now incomprehensible, these are incalculable."

An opening automatically opened in the back of the seat in front of him, and Ouyang Ruoxue threw the piece of paper, which had been almost folded, into it.

"It's a bit of a headache."

Just now, Ding Qianye tried to calculate how many conclusions this method could have in the end, but in the end he gave up, there were too many things involved.

"You know the Plane Gate, right?"

Ding Qianye remembered the black dot on the model that Senior Sister Feiyan had demonstrated to him, and nodded, and Sister Feiyan said that it was the hole caused by the overlapping planes.

"That academy gate is actually equivalent to a small plane gate, but I don't know when someone has been tampered with over there, and after coming in, it will be passed into that alley, and there are many newcomers every year, and the key is that the boss acquiesces."

Ouyang Ruoxue glanced back at the entrance of the alley that was getting farther and farther away, where there were already a lot of onlookers, who were looking inside.

"Uh。。。。。。 Do we also practice onlookers here? ”

Ding Qianye also looked back, and even saw an old man holding a child looking inside.

"Of course, there are aborigines in this plane, the population was more than 500,000 last year, and this is still willing to register, of course, most people don't have the power of supernatural powers, but the bad guys are also aborigines, and the boss has not expressed his position, so he just let it go."

Speaking of the boss, Ding Qianye found that Miss Ouyang's expression was always so adoring, and that little Lori seemed to be really influential.

"Our Hero Academia was born because of the overlap of these planes."

When it comes to the Hero Academy and the boss, Ouyang Ruoxue has more words, Ding Qianye can feel that it is a feeling of pride, that kind of longing to tell the world what a good place it is, and I feel honored because I am a member.

"We protect our own planes from intrusion, remove the influence of other planes to maintain balance, and sometimes even go to other planes to deal with all kinds of cause and effect."

Ouyang Ruoxue pointed to the cat in Ding Qianye's pocket and the paper bag in his hand (Ding Qianye didn't dare to swagger around the market with this thing in broad daylight), and when she came into contact, she already knew that this baby had been contaminated with cause and effect.

"Sister Feiyan has already told me about cause and effect, these are all 。。。。。"

Ding Qianye said with a bitter face that he was also helpless, the inexplicable bearded uncle and the cat pet who inexplicably signed the contract.

"Don't worry, the academy has already had experience after so many years, don't worry, I'll take you to the academy's cause and effect research institute after eating for a while."

Ouyang Ruoxue said that it was not strange, and there were so many plays every year.

"Thank you so much, I should call you Senior Sister, right? Senior Sister Ouyang? ”

Ouyang Ruoxue knows so much and is so familiar with the academy, she definitely doesn't look like a freshman, but more like a senior sister like Zhao Feiyan, it seems that she should be called a senior sister in the future.

"Almost, I didn't expect to be recognized, and I was thinking of pretending to be a freshman. Hahaha"

Ouyang Ruoxue smiled, and blamed herself for talking too much, she could have hidden it for a while.

"It's almost, isn't it? Are you? ”

Ding Qianye covered his mouth, a little surprised, he suddenly remembered some of the things in Ouyang Ruoxue's folders in the morning, although they flew by quickly, but a few bytes could be vaguely noticed in them, and there were a few folders of things like textbooks and filings floating over, thinking of this, even the title became you.

"Dwarf oil, I didn't expect my brain to turn quite fast."

Ouyang Ruoxue looked at the big boy opposite with appreciation, and finally officially admitted his identity.

"I'm a substitute teacher for your crash course, and I'm equivalent to your former homeroom teacher here, so please take care of me in the future."

Ding Qianye opened his mouth wide, this morning in his mind the image has been changing, a beautiful girl who heard the change of the boss and her temperament has changed dramatically now has become her own head teacher.

"Teacher Ouyang, I have taken care of you until the morning, and I would like to ask you to take care of me in the future."

Although he thought so in his heart, Ding Qianye still sincerely thanked Teacher Ouyang in front of him, but secretly put the paper bag in his hand back again, and it was better not to see the contents of it.

"It's okay, I also have shortcomings, please improve each other in the future."

"By the way, what's in that paper bag, I'll take a look at it first, and I'll have a corresponding disposal plan for a while."

Ding Qianye。。。。。。