Unlike Lu's little-known memory, his math prowess is well-known throughout the school.

The reason why he was specially recruited into the Department of Space Information Collection and Confrontation of the Logistics Support College was because of his outstanding mathematical ability, which is simply a dazzling talent in the field of electronic information.

Therefore, the teachers of the school tried their best to keep Lu An to continue his studies, and although Lu An was still far from the legal service age of 25, the military personnel stationed in the school had already begun to persuade Lu An to go to the army for internship.

It's a pity that what Lu An needs most is money.

But what made Lin Yongping speechless even more was that Lu An never thought that his mathematical talent was excellent.

He once told Lin Yongping in a slightly bitter and envious tone that his mathematical talent could only be regarded as average, and the people in the school were surprised because they had never seen really good ones, and these people were just a group of short-sighted turtles.

Such a very sincere and frank truth in Lu An's eyes made Lin Yongping helpless.

Although he has been exposed to it since he was a child, he has seen a lot of information and has a lot of experience. However, in the face of this God's partiality, he could only accept his fate very weakly, just like his grandfather said.

There was no way, he could only use all his strength. Just like Lu An has seen, he desperately uses time to make up for it, and often studies diligently until late at night.

Such diligence even made Lu Anxin feel a faint envy.

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However, what Lu An said was serious.

And it's true, Lu An has always thought so, because his brother Lu Ning, as he said, is the one who is truly talented.

Therefore, in Lu An's opinion, his mathematics is just to coax his naughty sister to play when playing poker, so that she can listen to her obediently and make less nonsense.

Because, a living example is close at hand, so Lu An can't help but think so.

The birthday wishes sent by my brother, the characters written on the back, seemed like a letter from heaven to Lu An.

However, what my brother wrote was not written by himself, but after he cracked the above three characters, he also added the content below.

As a student of electronic information, he is often immersed in programming, and Lu An is not even easy in this.

If you write a string casually, it's like writing a diary by yourself, it's easy and effortless.

What my brother did, however, was to continue writing a novel written by someone else, in a foreign language he had never learned, and the novel to be written must not only be correct, but also coherent and complete.

The difficulty of this can be imagined.

However, Lu Ning obviously did it, and Lu An's intuition at the time immediately determined it, and after careful analysis, it was indeed the most likely case.

After all, it's his brother, but he has a stupid brother.

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In fact, since receiving the piece of paper yesterday and reading those two blessings, Lu An has been very eager to solve the mystery behind it.

What exactly do those "0" and "1" strings mean?

Lu An'an was upset, Lu An scratched his head and cheeks, Lu An pondered and meditated, but he got nothing.

What does the father want to say?

What does my brother want to say?

These two questions lingered in Lu An's mind all the time, and they couldn't be dispersed no matter what.

Not to mention the three long paragraphs behind, even the simplest and shortest first paragraph, Lu An couldn't decipher.

What do the 56 "0s" and "1s" represent? Is it a two-digit character, or a four-digit character, or an eight-digit character, or a sixteen-digit character?

Moreover, what puzzled Lu An the most was that the four "0s" in the first four digits were obliquely crossed out and changed to four "1s" on them.

The writing of the four "1s" is exactly the same as the handwriting in the last paragraph, which is written by Lu An's brother Lu Ning.

Is this a hint from my brother?

Is he hinting at me by altering these four numbers?

However, in the morning, Lu An divided the fifty-six numbers into fourteen groups according to the numbers in groups of four, and he could not compose meaningful information by exhausting various methods.

What is it exactly?

Until Lu An returned to the bedroom in the evening, this question was in his mind.

Lying on the bed, turning off all the lights, adjusting the window to a transparent state, looking at the starlight outside the window, Lu An sighed slightly from time to time.

"Is my math only enough to play poker with Anna? Brother, you overestimate your brother. ”

Lu An closed his eyes a little helplessly, his heart aching slightly.

"But wouldn't my brother have thought of this? He must have given me a hint, but I just haven't noticed it yet. But what is it exactly? ”

Lu An reached out and gently stroked the paper placed on the pillow, but his fingertips touched a cold feeling.

It was the card, a silver-gray metallic hue that glowed with a cold glow in the night.

On the card, the clown still bowed slightly, his left hand behind his back, and his right hand holding a mask, as if he was smiling but not laughing, as if crying instead of crying, I don't know whether he was on the stage to greet or leave the curtain call.

Lu An picked it up, held it high in front of his eyes, and stared at it for a long time, the clown still had a strange expression, condensed at that moment, and did not suddenly say anything to tell Lu An the answer to all the puzzles.

"Annoying."

Lu An threw the card back to the pillow again.

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However, suddenly, Lu An suddenly realized that something was wrong in his head.

He picked up the card again and looked at it carefully, but the flash of inspiration in his mind just now did not appear again, and the light of inspiration did not come to Lu An again.

"Something must be wrong, I definitely found something just now."

"My brother really gave me a hint, and this is a hint."

Clown......

Clown......

Lu An stared at the card and began to rub the card little by little, not letting go of any detail.

J……

O……

K……

E……

R……

The name of the clown is embellished on the edge of the card.

JOKER……

"No, it's not a clown, it's not a clown......"

Lu An was frightened, trembling all over, and got up and sat up from the bed.

"This is the ghost card, this is the trump card, this is the trump card of the playing cards,......"

Fifty-six, the first four, the first four crossed out by my brother, fifty-two......

Lu An screamed excitedly and slammed the bed hard.

"It's not a binary string at all, it's not a two-, four-, eight-, sixteen-bit character, it's clearly a poker card."

Lu An patted his brain vigorously, turned on all the lights in the room, jumped out of bed as soon as he turned over, came to the drawer, took out a few pieces of paper, knelt in front of the bed and began to write.

He quickly wrote down the words 56, 54, 4, big king, little king, pulled the card with his hand, and kissed the weird clown hard.

"Brother, I found out, I found out."

"Great, great."

Lu An called excitedly, but suddenly remembered that it was late at night, and there were roommates sleeping next door, so he shut up a little stupidly, and then waved his fist a few times to enjoy it.

He turned on the projection of the whole system of Zhi Brain, called up all fifty-four cards of the playing cards, copied the fifty-six digits on the manuscript paper, and began to ponder carefully.

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Since the elder brother deliberately crossed out the first four digits, then if you only talk about the following characters, there are fifty-two digits in total, which corresponds to the fifty-two playing cards of A~K.

The first four digits may be the check digit, the characters of JOKER, or the string header.

Fifty-two card poker, fifty-two "0", "1".

In terms of order, it is likely to be a simple order of A~K or 2~A.

Lu An thought about it and wrote "A~K" and "2~A" on the paper.

The rest is the internal ordering of the thirteen numbers.

There are four suits of playing cards: hearts, squares, clubs, and spades, and Lu An does not know the order of the four suits in this string representing playing cards.

Is it hearts, diamonds, clubs, spades, or hearts, diamonds, spades, clubs, or spades, clubs, hearts, diamonds?

……

Wait a minute.

However, there are only four suits in total, and the order in which they are all arranged is only twenty-four.

Lu An wrote "24" on the paper.

Then he began to click on his brain, and the holographic projection soon showed all twenty-four arrangements of the four suits.

Lu An swept it with satisfaction, and filled in the thirteen numbers of the two combinations of "A~K" and "2~A" into the twenty-four suits and sorted the fifty-two playing cards.

Under Lu An's click, the holographic projection on the wall next to the bed was densely packed with forty-eight kinds of playing cards.

The answer to my father and brother is likely to lie in the order of these forty-eight playing cards, but which one is it?

Lu An knelt in front of the bed and began to bury his head in calculations again.

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On that piece of paper, Lu An was already familiar with the fifty-six numbers in the first paragraph.

However, what does the "0" and "1" in the last 52 digits mean?

If you take the simplest guess, this is probably a Boolean operation, with "0" for no and "1" for yes.

Don't?

Lu An entered 52 "0" and "1" into the brain, so that all the digits showing "0" were facing up, and all the digits showing "1" were facing up.

Forty-eight columns of playing cards began to turn in an orderly manner, and when the flipping was completed, Lu An held back the excitement in his heart and looked carefully at it line by line.

Perhaps, one of these patterns contains a special meaning, containing what the father wants to say through time and space, life and death, and what the elder brother wants to say through time and space, life and death.

However, Lu An was disappointed and disappointed.

He stared at the forty-eight combinations of positives and negatives over and over again, but he didn't get anything.

At this time, Lu An's knees were already kneeling painfully, and in disappointment, the pain in his heart made him sit down lightly on one side, leaning on the edge of the bed.

"What's going on? Did I guess wrong again from the beginning? ”

Lu An thought about it for a while, calmed down, gritted his teeth, and continued to kneel on the bed unwillingly, burying his head in calculations.

"0", "1", true or false, whether or not, whether there is or not, positive and negative......

"Hearts, diamonds, clubs, spades", permutations and combinations......

Playing cards, playing cards......

Lu An began to click frantically on the brain, he had to read all the relevant information carefully, and then tried it over and over again on the wall.

Before you know it, the night is fading, and the dawn of dawn is in the east, and the morning sun has risen.

A new day begins.