Magus Tech (Technological Wizard)

In the night, Angel continued talking in a weak voice, the more wrong and outrageous she became.

"Next...go straight and meet a tavern called 'Water and Fire'... let me go and turn right, then..."

Hearing Angel's words, Li Cha suddenly interrupted and asked seriously: "Do you know where you are now?"

"Ah?" Angel was taken aback for a moment, then looked down at the ground, "on the ground?" looked up at the starry sky: "under the stars?"

"..." Li Cha was silent for a while, let out a sigh of relief, and said to Angel: "Okay."

"Huh?" Angel didn't understand.

"Let me take you back to Baishi Tower Academy." Richard said. From Li Cha's point of view, according to Angel's degree of road blindness, even if she shows the way a hundred times, she may not be able to arrive smoothly. It's better for him to send the other party back and settle the matter once and for all, so as to save the other party from any accidents and unnecessary troubles on the way back.

Li Cha stepped forward, glanced at Angel who hadn't reacted yet, and said, "What? You don't want to go back anymore?"

"Uh... no... no." Angel said hastily.

"Then keep up, keep up."

"Um, yes." Angel quickly caught up, following step by step.

Li Cha and Angel, one in front and one behind, soon arrived in Baishi City.

Walking in Baishi City, when he walked to the familiar "Salt and Fire" tavern, Li Cha found that the tavern was closed. However, there was still a faint singing voice wafting out of it. It was a song he had heard before, and it was a little familiar. Maybe the meaning is not understandable, but the rhythm of the song is the same:

First is the 2/4 beat of "strong and weak, strong and weak", then the 3/4 beat of "strong and weak and weak", and then the 6/8 beat of "strong and weak and weak, second strong and weak".

"Tap, tap, tap, tap..."

While listening to the music, Li Cha led Angel around the tavern, turned left, and continued on...

In the end, the singing from the "Salt and Fire" tavern disappeared, and Li Cha stopped at the entrance of the White Rock Tower Academy. Pointing forward, Li Cha said to Angel behind him: "You should know how to get here, right? You shouldn't need me to send you back to your dormitory, right?"

"Uh, no need." Angel quickly shook her head.

"That's good, go in, I'm leaving."

"Eh..." Angel lowered her head and walked into the academy. Turning around and taking a sneak peek at Li Cha, he found that Li Cha had disappeared into the darkness, bit his lip, and walked into the depths of the academy with a complicated expression.

...

Laboratory, main laboratory.

Li Cha returned.

Because all the insignificant matters were resolved, Li Cha relaxed a little at this moment, strode to the experimental table in the room, took out the five newly acquired books of the Black Spirit Empire in the space iron ring, and began to study.

Putting the five books on the table, Li Cha quickly turned to the last page, glanced at the numbers on the Black Spirit Empire logo, his eyes flickered.

The five numbers are 3, 7, 24, 27, and 29. According to the current world version of the Lychrell number verification, the obtained palindrome numbers are 33, 55, 66, 99, and 121, respectively.

The books that have been owned before are:

, palindrome number 11;

, palindrome number 22;

, palindrome number 77;

, palindrome number 99.

That is to say, among the five newly obtained books, only one book is duplicated, and four are new:

The first new book, Ghost Tales;

The second new book, Anthology of Fables;

The third new book is a relatively simple wizard spell book.

A fourth new book, Autobiography of a Wizard, is similar, but without the oddities of grooming male slaves.

After clearing the books, Li Cha's eyes brightened, and he had to say that this night was a big harvest, and what he gained was comparable to everything he had gained before.

It was previously guessed that the number behind the logo of the Black Spirit Empire book should be within 40. Therefore, only 11 palindrome numbers were obtained through the Lychrell number verification process.

11!

Now the books with 8 palindrome numbers have been obtained, and only the books with 3 palindrome numbers have not been obtained.

In this way, even if you can't unlock the secrets hidden in the book, you should be able to see the general framework.

Li Cha's eyes were sharp.

What is the secret hidden in the book?

He doesn't know the secret yet, but he has some guesses about the way to hide the mystery.

The method of hiding mysteries in books should not be some kind of hidden text——only by using special conditions such as water immersion and fire can the text be revealed. In doing so, first, it cannot be preserved for too long, and second, it has no connection with the numbers and palindromic numbers on the logo of the Black Spirit Empire on the last page of the book.

The numbers on the Black Spirit Empire logo and the Lychrell number verification palindrome are some very special numbers, which should not be used to confuse information, but are related to secrets.

So……

Speaking of numbers, Li Cha couldn't help but think of a very common look-up table replacement method in the early days of cryptography.

The so-called look-up table replacement method, in simple terms, is the codebook method: to transmit information, instead of using normal words, it is replaced by some seemingly meaningless numbers.

The person who receives the information must have a corresponding password book. According to the content of the password book, the correct information can be obtained only after the numbers are matched one by one, so as to prevent people from intercepting and leaking the secret halfway.

This method can be regarded as flexible and changeable. Be careful. In order to prevent the codebook from falling into the hands of the enemy and causing heavy losses, the codebook can be replaced periodically. Be more careful, you can use a different book as a brand new codebook every time you pass on a message.

For example, if the sender gives the message "137, 826", it may represent the 137th and 826th words in a certain book.

The person who receives the information checks the books and compares them. The results are different depending on the book. It may be a "success" or "failure" message, or it may be an instruction such as "attack", "retreat", and "hide". possibility of disclosure. Of course, there are still some gaps with encryption methods developed based on computer technology on the modern earth, such as symmetric encryption DES, 3DES, AES encryption, and asymmetric encryption RSA, elliptic encryption, etc.

Having said that, what is the result obtained by using the look-up table replacement method in the current book?

Li Cha first picked up the book with serial number 1 and palindrome number 11, found the 11th word in the book, and found that it was the word "ke".

Then pick up the book with the second serial number and a palindrome number of 22, and find the 22nd word in the book, which is "fruit".

The serial number is the 3rd, the palindrome number is 33, the 33rd word, "Li".

The book with serial number 4 and palindrome number 44 is temporarily missing, omitted.

No. 5, palindrome number 55, the 55th character, "ancient".

The serial number is the 6th, the palindrome number is 66, the 66th character, the separator symbol.

The serial number is the 7th, the palindrome number is 77, and the 77th character is "Du".

The book with serial number 8 and palindrome number 88 is temporarily unavailable, omitted.

The serial number is the 9th, and the palindrome number is 99, and the 99th word is "Er".

The serial number is the 10th, and the palindrome number is 121, and the 121st word is "Mongolian".

The book with serial number 11 and palindrome number 363 is temporarily missing, omitted.

The end result is...