The days of learning black magic in another world

"Oh! Of course, look at me! I'm probably really old. When I get old, I like to reminisce about the past. I've said a lot, but I haven't mentioned the main point..."

"The circle of time is a kind of dilemma created by Baldemis and others using half of the authority of time. You can understand that once the circle of time is activated, the people in the circle start an infinite loop of time. They experience Looking at the time that seems to be moving forward, but in the end it will still return to the starting point.”

Riemann muses—a Möbius ring?

"Go on, how do I get there if I want to save them?"

"Well... that's the problem. I don't know where the time circle is in the world."

"But I know that there are five-ring light mages who also survived from that time outside the circle. They chose to guard the time circle, and they put themselves in this circle."

Riemann: "So I have to upgrade to the fifth ring to have the possibility of breaking through this defense."

"Exactly." Mr. Principal went on to say, "I saw your paper published in "Mathematics", and I thought that with your ability, you might be able to solve problems that we couldn't understand at the time. Time magic and fate magic didn't exist. People have used it before, but what can be done just by looking at the power of time... If you can learn it, it may not be too difficult for you to break through the defense line of the Holy See mages."

"However... time has passed for so long, and the topic we extracted at the beginning has long since disappeared. Do you want me to help you extract 'fate' and the half of 'time' from your spiritual body so that you can understand the topic? "

"But in this case, you have to spend some time to return to the third ring."

"It's quite safe here. You can spend a few years meditating and learning magic with me."

Riemann thought for a while, and finally shook his head: "Not for the time being, I still have a lot of plans. If the strength suddenly drops, there may be many accidents. Let's do this after I destroy the Holy See. I hope I can temporarily Keep this system, oh, that is the mixture of the two powers you mentioned, I think it is better to use all the power that can be used when the strength is not enough."

The principal with the white beard was stunned for a moment, then raised his eyebrows: "Oh... oh! So you plan to destroy the Holy See directly?"

Riemann was also stunned: "Wait a minute, no... otherwise? From what you just said, I can only draw the conclusion that our goal is to destroy the Holy See?"

The principal smiled a little embarrassedly: "I thought you were just planning to sneak into the Holy See, find the time circle, and then secretly rescue people..."

Riemann was silent for a while: "Well... this is indeed a choice."

Principal: "Hey, just do it the way you like."

Riemann: "Well... As for time magic, I have actually learned one, but the price is a bit high."

The headmaster was really dumbfounded this time: "You...you...wait, what did you say? You, you already know it?"

Riemann took off his gloves, revealing his scorched and withered right hand: "This is what was left before. The effect of that magic should be to speed up time, but I only had the second ring at the time. It exhausted all my magic power and began to devour my vitality. , fortunately, I stopped in time, otherwise this hand might not be the only one that has become like this."

The principal raised Riemann's withered and scorched right hand almost in awe and looked at it: "My God..."

Riemann didn't quite understand: "Wait a minute, since you have read the articles I published on Mathematics, you should be able to create time magic too?"

Mr. Principal shook his head in shock: "Why do you think so?!"

Riemann thought hard, and still felt that he should be right: "The core of the accelerated time magic is a differential problem. Now that you have read my paper, you also know that the core of time magic is related to infinity. Shouldn’t it be reasonable to think of using those questions to construct a magic core so that time magic will appear?”

The current expression on Mr. Principal's face made Riemann unable to take a step back.

That expression is not only what can be described by the word "shock", to be precise, it is more similar to the shock of "Are you human?"

Riemann didn't understand what this expression meant...

Mr. Principal scratched his head. He obviously had white hair and a white beard on his face, but he showed a somewhat stupefied demeanor: "No... no, this is not normal, of course it is not normal, you must It is necessary to accurately solve the question given by the light ball, because once there is a deviation, the magic cannot be used, and then this is only the first step. After solving the problem, we have obtained a new magic, but this It is very difficult to use magic. You must use it exactly according to the question given by the light ball. You can’t make mistakes in any data or step. Of course, this kind of magic is more difficult to use, so someone discovered it later. Repeatedly expand on the basis of the light ball problem, and understand it as a type of problem until most of the possibilities are exhausted, so that you understand a problem, and then you can truly use this magic at will..."

"...So you can use time magic, either you stumbled into the corresponding question on the light sphere by mistake, or you have completely penetrated a question type... Oh hell! Why? I am the one who stays! I have already been hit by so many people, why should you be one more!"

Although Mr. Principal was a bit incoherent, Riemann barely understood what he meant—he meant that if magic users were simply regarded as “people who solve math problems”, then they could be divided into two categories— - "People who can only do questions" and "People who can ask questions".

"A person who can only do questions" must strictly follow the question given by the light ball to use magic. Even if some innocuous data is changed, or some innocuous mistakes are made, the magic will not be able to be used.

"A person who can make questions" is relatively flexible, not only can change the data at will, but can even do various expansions, and it is not necessary to strictly follow the questions given by the light ball to cast magic, and it is much easier to cast... …

So Riemann sincerely began to comfort Mr. Principal: "This is not your problem, Mr. Principal, I don't know which different worlds you have connected, but in my world, this knowledge is accessible to everyone, and I have been trained for 16 years to solve all kinds of math problems, and the habit of my teachers in lecturing is to let us try to figure out the intention of the person who made the question..." Riemann couldn't help but pause, It's such an all-too-familiar and nostalgic line, "And I used to have to support myself by teaching in my own world, and if I didn't master those types of questions, my students would just pat their butts and leave, so, Mr. Principal, please don’t be surprised by this. I just have a better environment. For example, those papers I published on Mathematics and Physics, in my world, have been studied by everyone for hundreds of years. They have been transformed into a form that ordinary people can easily grasp."

"All in all, don't be surprised."

His words didn't seem to have a particularly great effect, and the principal looked even more surprised: "It's really unimaginable, this is... what kind of world is this?"

Rieman paused: "This is a world of normal development, and it will become like this in the future. As long as a certain point is passed, the world will change rapidly."

He spoke vaguely, but firmly. Mr. Principal looked at him, as if he wanted to say something, but in the end he didn't say anything, but showed a look of mixed relief and yearning.

After a while of silence, the principal sighed: "If this is the case, maybe 'time' and 'fate' can play a greater role directly on you, because to be honest, when I just told the story, But I didn’t bring the time unit, if you want to dig out the topic from them, it will take several years..."

Riemann: ...Good guy, people who have lived for hundreds of years (maybe more than a few hundred years) are indeed more patient.