Night.

Laboratory, main laboratory.

Sitting down at the long lab table in the lab, Richard took out the book "My Autobiography - Moratos" that he had bought from the Forbidden Book House and put it on the table.

After that, he took out the previous three books with the logo of the Black Spirit Empire and put them together.

Three books, in addition to the repetition of "My Autobiography - Moratos", the remaining two are "Towards Nobility" and "Blood and Fire".

"The Road to Nobility" is a book that mainly talks about various aristocratic etiquette, and the number 34 on the symbol of the Black Spirit Empire is 34. In addition to etiquette, this book also involves some family crests, costumes and other knowledge, which is much more ordinary than "My Autobiography - Moratos".

After all, "My Autobiography - Moratos" is at least a book related to wizards, ignoring the content of training male slaves, and tells a lot of useful spell tips, and "The Road to Nobility" is purely a popular book.

"Blood and Fire" is even more unbearable than "The Path to Nobility", it is a knight, and the number 11 on the logo of the Black Spirit Empire. Its content is mainly about the experience of a tall and mighty knight and a noble lady.

This kind of story has always been very popular in the medieval-like world, and the story of the affair with Gui and the story of the knight slaying the dragon are among the most popular genres, and are constantly spread by the bards. But the problem is that, apart from the story, there is nothing related to the so-called Black Spirit Empire, let alone clues related to the secrets of the Black Spirit King and the White Stone Tower.

“11、34。 Richard arranged "The Path to Nobility" and "Blood and Fire" on the table, one on the left and one on the right, in order of size, and guessed the contents of the books with the rest of the number.

"The number on the logo of My Autobiography – Moratos is 9. Richard picked up the book he had received from the library of the White Rock Tower, put it on the far left, and wondered why "My Autobiography - Moratos" and "The Path to Nobility" were only two numbers apart, and why the content was so surprised.

"Could it be that the first 10 numbers are all wizard books, and the 11 to 20 numbers are tool books. Numbered 20 to 30, is another category of books. 30 to 40 are useless books. Richard said to himself, his eyes flashing slightly.

After speaking, Richard picked up the books he had bought from the Forbidden Book House and put them on the far left, ready to stack them together.

Just as he was about to put it down, Richard saw a gap open on the last page of the book, and subconsciously glanced at the number on the sign on the last page, and was suddenly stunned.

Then his eyes sharpened, and he stopped putting the book.

"Huh?!" Richard exclaimed, his eyebrows furrowed slightly.

"Smack!"

With a soft sound, Richard put the book "My Autobiography - Moratos" that he bought from the Forbidden Book House on the table alone, and opened the last page completely. I saw the sign of the Black Spirit Empire on it, although it was a little vague, but it was recognizable, and the number written on the mark was not 9 at all, but ...... 27。

27？

27！

For a moment, Richard was suspicious that he had bought a fake book, but quickly denied it. The Forbidden Book House is so special, with many banned books on display, and there is obviously a lot of support from a lot of forces. Under this premise, it is unlikely that fake books are deliberately sold.

This is equivalent to a nobleman, who can collect taxes and make money in an upright manner, and does not need to do anything such as theft and fraud that destroys his reputation and makes very little profit.

And most importantly, this book can make the quaint ring worn on the finger heat, but it may be due to the fact that it is not very well preserved, resulting in a relatively weak heating effect.

So if you take this 27-numbered "My Autobiography - Moratos" as a book that is really related to the secrets of the White Stone Tower and the secrets of the Black Spirit King, what does it represent?

Richard pondered.

First of all, his previous conjecture that the numbers correspond to the types of books was wrong—the numbers were clearly not meant to divide the kinds, but to carry more special information.

So what could it be?

Why is the book number 27 the same as the book number 9? Is there any connection between the two numbers? It can't be because the number of the former is three times the number of the latter. Or is it not the same book just because both books are divisible by the number 3?

In this case, the number 11 of "The Road to Nobility" is a prime number. The number 34 in "Blood and Fire" is the product of 17 and 2, and 17 is also a prime number......

After thinking for a long time, Richard rubbed his eyebrows and said, "It's a little messy, it's really a bit messy." 9. 27 What is the relationship, and what can be attributed to the same ......"

"Binary, hexadecimal, sexagesial?"

"ASCII code?"

"Morse code?"

“......”

Richard was puzzled, and felt that his current state was very much like that of Thorates, a university visitor, during the day, who could not answer the question of the thief's secret room.

It seems that everyone has a problem at one time, so ......

Wait!

Richard suddenly raised his head, stared at the empty air with burning eyes, and then reached out and raised a finger to scratch meaninglessly in the air.

As he swiped, he muttered to himself, as if hallucinating, "Retreat, retreat, keep retreating!"

This is the feeling of Richard trying and recovering many thoughts, and the moment of inspiration flashes.

"Retreat, retreat, retreat......"

"Stop! stop here!"

Richard's fingers didn't move in mid-air.

"The problem of the scholar Surrates?" Richard said to himself, "Hmm...... Don't...... Will it be so? But ......."

Richard's eyes flickered, he looked at two copies of "My Autobiography-Moratos" with different numbers, and had a guess in his mind—a guess that was somewhat unacceptable, but which could explain everything subtly.

"In this case, we must find more corresponding books handed down by the Black Spirit Empire in order to verify them. In this case, you will have to go to the Forbidden Book House once and enter the inside.

It's a bit too anxious to go back now, and the test must also be treated with caution. So...... Just wait for the next big underground market to open, and then go, that is, in three days......" Richard muttered to himself, making a plan.

After solving the problem of books, Richard let out a sigh of relief, then cleaned up the table and began to continue his work - conducting magic pattern research.

As before, Richard's research on the magic pattern was mainly to crack the magic pattern on the magic pattern spell items obtained from the auction house.

I have already cracked the magic pattern of the "Paralysis Ring" before, and this time I am preparing to crack the magic pattern of the frozen bracelet.

Lighting the candle, adjusting the intensity of the light, taking out the papyrus scroll, everything was ready, and Richard got his hands on it.

After that, it took Richard a night of hard work to complete the crack.

A day later, in the evening, Richard cracked it again, cracking the magic pattern of the venom pendant, and it took one night to succeed.

Two days later, Richard spent the night trying to improve the cracked Paralysis Ring, Cryo Bracelet, and Venom Pendant.

Three days later, on the night, Richard spent the night erasing the original magic patterns on the paralysis ring, and then carved the three cracked and improved magic patterns on it.

In a flash, it was the night that came four days later—the day when the great underground market opened again.