"Damn boy!" As if in revenge, the book spirit burst out loud, rudely interrupting Richard's words, and shouted, "Damn boy, you're cheating, you know the puzzle and the answer to the puzzle, you must have got it from the rest of the people who successfully passed the verification." Although you answered correctly, your actions were vile and shameless, and I will always remember you......"

"Wait!" Richard exclaimed, "you say, I got the puzzle and the answer from the rest of the verified people?

"......" was silent, and there was silence for a long time, and after a long time, the stiff voice of the scholar spirit sounded, "Boy, don't talk nonsense, say your problem! ”

"Well, I'll ask you instead. Richard thought for a moment and then spoke up, "Well, there is such a problem, there are only four forces acting on matter in nature, namely electromagnetic force, weak interaction force, strong interaction force, and gravitational force, do you think there may be such a systematic theory that combines the four forces to explain all physical phenomena by force? If so, what is the core of this theory?"

"......", silence, long and eerie silence.

"Can't you test the theory of grand unification? Richard glanced at the page and muttered to himself, "Is this question-and-answer question too difficult?" Okay, so let's change to a simpler true/false question, you just need to choose between right and false, such as the Riemann hypothesis, one of the seven great problems in mathematics:

Mathematically, there are numbers that have special properties that cannot be represented as the product of two smaller numbers, such as 2, 3, 5, 7, and so on. Such numbers are called prime numbers, or prime numbers. Prime numbers play an important role in the field of pure and applied mathematics, but if you look at it cursoryly, the distribution of prime numbers in all natural numbers does not follow any rules.

But a man named Riemann put forward the hypothesis that the frequencies of prime numbers are closely related to a complex function. i.e.: ζ(s) = 1 + 1 / 2S + 1 / 3S + 1 / 4S +... Do you think this conjecture is right or wrong?"

"......" silence, continue the long and eerie silence.

Richard couldn't help but raise his eyebrows: "Still can't answer it? So, you can't make some answers beyond the limits of human thinking, you don't have the attribute of 'super intelligence', right?"

"......", still silent.

"Okay. Richard sighed and said softly, "Then change to the simplest question, this question, you must know." How many times the circumference of the circle is the diameter? or, more simply, how many times the length of the wheel of a carriage is the length of the two spokes that are joined together?"

This is the simplest expression of the π of pi, according to Richard's understanding, in the history of the modern earth, ancient Egypt before 1900 AD accurate pi to 3 decimal places, more than 200 BC, the ancient Greek mathematician Archimedes accurate pi to 5 decimal places.

As long as the book spirit in front of him has this knowledge, he should be able to answer this question, and according to the accuracy of the other party's answer, he can roughly determine the mathematical level of the current world, so as to have an understanding of the entire wizard-spell system.

After all, whether it is magic or science, as long as it is the establishment of a complete system, as long as it conforms to normal logic, then the use of mathematics cannot be missing. In this case......

The next moment, Shu Ling really spoke, but it was less of his previous momentum, and he seemed to have the strength to reply, "3." ”

"More precise?" asked Richard, "what's after the decimal point?"

"3.1415926......" The book spirit's mechanical voice sounded.

Hearing that the other party accurate pi to the 7th decimal place, Richard couldn't help but raise his eyebrows, this is already the peak level of ancient China on the modern earth, and it may even be exceeded.

And once exceeded, then the range to be tested is instantly expanded, after all, pi accuracy is explosive. Around 480 A.D., the Chinese ancestor Chongzhi was accurate to the seventh decimal place of the π, and it took almost a thousand years before it was broken - in the early 15th century, the Arab mathematician al-Qasi calculated the π approximate value of 17 decimal places.

Later, in 1789, Slovenian mathematicians calculated π 137 decimal places. In 1948, British mathematicians calculated the π to 808 decimal places. In 1949, the π was calculated to be 2037 decimal places. In 1973, it was calculated that π one million decimal places. In 1989, it was calculated π 480 million decimal places. In 2010, it was calculated that π 5 trillion decimal places......

Thinking of this, Richard spoke up and asked Shuling: "If this value is defined as π, what is the 100,000th decimal place after π?"

"......" the book spirit's voice in reply stopped abruptly, as if it had never been there.

Richard immediately knew that he was in a hurry, his eyes flashed, and he muttered, "Why, haven't you reached this level of precision? What about 10,000? 1000? 100?"

"Damn boy...... "Shit boy," the book spirit said, his voice trembling, his tone up and down, as if a machine couldn't handle too much load, "your damn question is too hard...... It's too hard, I tell you, and the answer is...... Be...... Be...... Ahh

In the end, the book spirit let out a miserable scream, and the moving jaws on the pages suddenly froze, and the flames in the eyes instantly froze, as if a mechanical failure or a computer crashed, and there was no sound again.

After a long time, Richard tentatively touched the page of the book where the book spirit was and found that it was cold, and it was no longer the same temperature as before.

"It's ...... Verified it?" Richard muttered to himself, "Or is it because the calculation is overloaded and there is an unrepairable error?"

Richard looked closely at some of the pages and found no special structure, just a plain piece of paper with a skull drawn on it. The so-called book spirit apparently exists in the pages of the book in a way that he does not yet know.

The next moment, Richard shook his head, and instead of trying to waste time trying to figure out the principle of the book spirit, he directly turned the back pages of the book.

Dense red handwriting appears on the second page.

Written on the first line of the second page, it is like an introduction: Listen to me, remember me, you are witnessing a new world, Monroe.

The second line is a little bigger, like the name of the book: Monroe's Chapter!

The third line is the real content: the wizarding world is mysterious and dangerous, and every reader, when you read this book, a whole new world is slowly opening up to you......

Richard's eyes narrowed, he took a deep breath, read carefully, and ...... Sleepless nights.