sea ​​situation

Lu Ming shook his head and was speechless. He really felt like a cow playing the piano.

"Actually, at the beginning, I really put on a show, thinking that eating like this would be pompous, but I really like it after eating." Zhang Ziyang explained with some embarrassment.

The two left the restaurant after eating, Zhang Ziyang sent Lu Ming home, and then drove to Cailian's place to spend the night by himself, now he basically doesn't go back to his residence, he and Cailian are living together.

Lu Ming was not in a hurry to see Sheng Youde, since Huang Yanning had already met Sheng Youde, he knew everything he should know.

What Huang Yanning told Lu Ming was nothing new, the main thing was that it was a little bit more: he had to come forward to rescue Yuan Ziyuan.

This is also where Lu Ming is anxious, he must find the key as soon as possible to solve the mystery.

He read the three letters horizontally and vertically. He had already read them countless times. He had already memorized the content of the letters, and he could even recite them backwards, but he still couldn't find anything unusual.

Why not take this to play with calligraphy?Just calm down.

Back at the apartment, Lu Ming simply found a roll of rice paper that hadn't been used for a long time, then took out the inkstone and lake brush, sharpened the ink and wrote three letters side by side on a long piece of rice paper with the brush.

I wrote three pieces in a fluttering manner, pressed them against the wall with thumbtacks, and stood there to watch them over and over again.

He tried to scramble the three letters, and then reorganized them with the words inside, to see if he could find the hidden information in it.

He kept trying various combinations repeatedly until midnight, but he couldn't find any useful information. In the end, he became numb and dizzy. He couldn't stand it any longer.

The next morning, Yuan Mingzhu came, while Lu Ming was still in a coma.Now that Yuan Mingzhu had the key to the apartment, she walked in directly.

As soon as Yuan Mingzhu entered the door, he saw a few pieces of paper pasted on the wall. He was overjoyed. He was about to appreciate Lu Ming's calligraphy, but he stopped in shock.She looked at her sister's letter pinned on the wall in amazement, which was copied by Lu Ming with a brush, and suddenly an ominous thought came to her mind, and she kicked Lu Ming awake.

"Get up, lazy pig, the sun is shining on your ass." Yuan Mingzhu shouted loudly.

Lu Ming woke up, looked at Yuan Mingzhu standing in front of him, and asked unconsciously, "What time is it now? You're here."

"I'm not here. If I hadn't come early, I wouldn't have known you had this plan in mind." Yuan Mingzhu snorted coldly.

"What kind of calculation?" Lu Ming was confused.

"Tell me, why did you nail my sister's letter to the wall? Tell me honestly, do you have any bad thoughts about my sister again?" Yuan Mingzhu asked coldly.

"Ah, where is it, am I confused, or are you confused?" Lu Ming was so frightened that he woke up suddenly, which was more effective than pouring a bucket of ice water on his head.

"I'm asking you, tell me quickly, what are you doing copying my sister's letter?" Yuan Mingzhu continued to kick him.

"What nonsense are you talking about? I'm thinking about Ziyuan? Sheng Di has to fight me with a knife." Lu Ming's brain was basically in a short-circuit state.

"Ah, you hid at home and copied sister's letter, but because you were afraid of Shengdi?" Mingzhu became even more angry when she heard that.

"Is there something normal in your little head?" Lu Ming hit her on the head angrily.

"You still dare to hit me? It's overturned!" Yuan Mingzhu immediately opened his teeth and claws, grabbed Lu Ming's arm and twisted it violently. Lu Ming grinned in pain and did not dare to resist.

"You confess honestly, what's going on?" Yuan Mingzhu pointed to the letter on the wall and asked.

For a moment, Yuan Mingzhu was really a little scared, afraid that her sister and Lu Ming would be ambiguous, and they would use secret letters to secretly tell each other and secretly communicate with each other.

If this is the case, she really has the heart to die.

Even if Lu Ming got involved with Yan Xiaohui, she was just a little sad and would not die, but if she really set foot in Yuan Ziyuan, it would really make her die.

"That's it..." Lu Ming choked up as soon as he spoke, not knowing how to explain.

He really couldn't tell Mingzhu the real situation. What happened to Yuan Ziyuan was too complicated. First, he couldn't explain it clearly. Second, if he started from the beginning, he would have to tell Mingzhu that Yuan Ziyuan had been hiding in his apartment.

Alas, this is getting darker and darker.

And third, if Mingzhu knew that Yuan Ziyuan had been kidnapped by the Japanese, she might go crazy, but if she didn't tell the truth, the three letters were nailed to the wall like calligraphy, this situation is really hard to explain.

"What is it, are you talking about it?" Yuan Mingzhu thought he couldn't say it.

"I was working on a password design. There was no good version yesterday, so I came up with a whim and wanted to use Ziyuan's credit to design a password. If it works, it must be an unbreakable password." It wasn't for nothing, and after a sudden turn, I thought of a set of excuses.

"Password? What the hell is a password?" Yuan Mingzhu's mind was blank.

Lu Ming had no choice but to explain to her what the cipher was for, that is, to share a set of ciphers when sending telegrams, so that only both parties could understand the communication, and even if others received the signal, they would not be able to decipher the original text.

"That's right, but why are you designing a password if you have nothing to do?" Yuan Mingzhu still couldn't believe it.

"You also know that I'm still working part-time, that is, as an observer in Shanghai for an American newspaper. I have to write reports for them every week, and they pay me five hundred dollars a month for the manuscript." Lu Ming said.

"Five hundred dollars? That's so much." Mingzhu was a little frightened.

The five hundred dollars at that time was indeed a fortune, double the salary of a lieutenant colonel in the U.S. Army.

"That's right, people give me such a high salary, I have to do my best, but there are secrets in the things I write to them, and I can't use their codes to send them at the telegraph office, so I am going to design a code myself, This is an act of patriotism, Mingzhu, you misunderstood me." Lu Ming said in an emotional voice, almost shed a few tears.

"Hey, let me see, how did you design the password?" Yuan Mingzhu was completely blinded by Lu Ming, and got into his trap.

Seeing her somewhat convinced expression, Lu Ming smiled inwardly: "Little fool, if I can't fool you, I will take your surname."

"Look at Ziyuan's three letters. They look ordinary. No one can read anything unusual. The more you make a password like this, the better it will be. No one else will be able to decipher it. They will believe that there are no secrets here." Lu Ming explained in a spirited manner.

"Well, that's right, I can't see anything, it's just a letter from the family." Yuan Mingzhu nodded.

"I just want to disassemble the words and phrases in these three letters and reassemble them into a practical password. Of course, I am just trying now, and I am far from designing a perfect password. You can also help me think of a way " Lu Ming continued to fool Mingzhu.

Yuan Mingzhu had no experience with ciphers at all, and she didn't understand the principles behind them, but she understood them as soon as Lu Ming said them. In fact, they were code words spoken by Chinese people.

The Caobang has its own code words, which are also called black words, or Jianghu incisions, but the incisions are very simple. Compared with the complexity and precision of cryptography, it is like the difference between a computer and an axe.

"Then teach me, and I'll help you design." Yuan Mingzhu became interested.

"It's hard to learn, you have to learn the principles of cryptography, design principles, etc." Lu Ming nonsense.

In fact, he doesn't understand cryptography, because he has never learned it.Cryptography is a specialized knowledge, not much worse than mathematical physics.

In principle, cryptography is based on advanced mathematics, and it is much easier for people who understand mathematics to decipher codes.