"How is the situation regarding the deciphering of Japanese military messages?"
"Comrades from the communications department are working with comrades from the Special Branch to obtain information and translate it at the same time. We have found a comrade who has matrix theory knowledge. He will arrive at three o'clock in the morning, that is, one hour later, and it is expected to be around 10 o'clock tomorrow morning. Able to decipher the first Japanese military message."
"Okay, this is very well done. I hope to see the results as soon as possible. In addition, our Comrade Qingluan risked his life to deliver the notebook in person. We must treat it with caution and never allow any mistakes. Comrade Qingluan must be treated as such." and the notebook are kept highly confidential, and the level has been raised to top secret.”
"yes!"
After the male secretary responsible for reporting the current situation left, there were only three people left in the house.
A middle-aged man codenamed 'Professor' sat at the head of the table, took out a pack of cigarettes with his right hand, lit it, and exhaled a puff of smoke: "It has been initially determined that this Japanese red secret deciphering information is authentic and will be of great significance to our anti-Japanese work. Great help. According to the content of the second letter submitted by Comrade Qingluan, it can be determined that Mr. Zhang San has worked for the Blue Clothes Society's Secret Service and has a close relationship. In order to protect the safety of Mr. "Zhang San", I think the red secret agent should be The deciphered information is classified as top secret, and leakage of information is avoided as much as possible.”
The price of leaking information is extremely heavy. The Japanese will not only update the encryption system as soon as possible, but also frantically search for Zhang San.
But that's not all yet!
The Blue Clothes Society's Secret Service will immediately launch an investigation into the personnel involved in deciphering the red secret, which will greatly increase the risk of Mr. Zhang San's exposure.
For the safety of Mr. Zhang San, as members of the Eighth Route Army, they could only do one thing - keep it secret.
Keep it as secret as possible!
"I agree. This Mr. Zhang San risked his life to leak this complete information to us. We cannot put him in danger. He is our friend." Another middle-aged man nodded, with a serious face, Hubei The accent conveys solemnity.
The last person said: "I agree, but I think we should look for this Mr. Zhang San. I can feel that he is full of goodwill towards our organization and agrees with us very much. With such an expert who can decipher the Japanese military code system joining us, our The team will be even stronger.”
Expert in deciphering the Japanese military code system!
Most people may not understand this concept.
But anyone who knows a little bit about the situation will know how valuable this type of expert is.
This is not simply stealing intelligence, but a comprehensive attack on the enemy's communication system.
"I have arranged for people to search for this, but there is little hope. Regarding the first thing, everyone will vote by a show of hands." After hearing this proposal, the professor shook his head slightly, changed the topic, and returned to the topic, raising his right hand to express his stance. .
Immediately afterwards, the two middle-aged men sitting on both sides of the dining table raised their right hands one after another.
3:0, unanimously passed the plan to 'classify red secret deciphering information as the highest top secret level'.
The confidentiality levels are divided into top secret, top secret, secret, and secret. The confidentiality level is determined according to the value of the information and items. The confidentiality time is 50 years, 30 years, 20 years, and 10 years respectively.
As the top leader of the Northern Organization, the professor can independently determine top-secret information and items, but the classification of 'top-secret' must be discussed and decided at an organizational meeting and followed a formal process.
For the Eighth Route Army, the value of this extremely precious and complete red secret deciphering information reached the highest top secret level, and it would not be of much help to the anti-Japanese work.
Know yourself and your enemy, and you can fight a hundred battles without danger.
Before the Japanese discover that the encryption system has been deciphered, the content of Japanese diplomacy and Japanese army communications will be completely controlled by the Eighth Route Army. This is the true "know yourself and know the enemy"!
Although, this situation may not last long, maybe three months, maybe half a year. Of course, the Japanese army can change the encryption system tomorrow on a whim.
As for the Japanese Navy, I can't control it for the time being.
"The second thing is that Lin Wan, the head of the youth organization Peiping No. 4 Middle School, codenamed 'Qingluan', risked his life to safely deliver the notebook to the organization. I think it is appropriate to give credit to Comrade Lin Wan." The professor paused and continued. said.
"I agree. Comrade Lin Wan is outstanding, smart and intelligent. She once participated in the December 9th Movement and is a rare outstanding female comrade."
"I agree."
The other two nodded.
"Okay, the meeting is here for now. Comrades, with this precious information sent by Mr. Zhang San, I believe that we will definitely win the final victory."
…
Since receiving the classroom privileges given by Mr. Luo Wenguang, Yu Hua's academic level has been improving recently. He has truly started mathematical analysis. He has a deeper understanding of various elementary mathematics knowledge and advanced mathematics knowledge and has further improved. scientific ethics.
Mathematical analysis has something that is unique from all branches of science, and that is the mathematical thought of going back to the origin.
With the academic level of his major subjects getting higher and higher, Yu Hua's plans and goals for the future have become clearer. At the same time, the final structure of the thinking finite element analysis system is being continuously constructed, and the total progress has reached 78%.
There is only one step left to formally establish the initial thinking finite element analysis system.
The sky is clear and clear, cloudless.
In late spring, the city of Beiping has been enveloped in greenery that symbolizes hope, and there are freshly drawn green strips everywhere.
Xicheng District, small chemical laboratory.
The first experiment in making nitrocellulose——
The first step is to prepare mixed acid, the ratio of sulfuric acid and nitric acid is 2:1, continue shaking, and let it cool to room temperature.
The second step is esterification.
The degreased dry refined cotton is divided into small pieces and put into the mixed acid. The amount added in a single time should not be too much, as long as the mixed acid solution can submerge the refined cotton and it is easy to turn.
Immerse the beaker in 32°C water and heat it, and continue to turn the refined cotton in the container, but do not lift the refined cotton out of the sour surface.
Reaction time: 10 to 20 minutes.
Inspection method: Take out a little nitrocellulose, wash it with water until it is no longer acidic, then wash it with ethanol, squeeze out the attached alcohol, and put in a 1:3 mixture of alcohol, ether and acetone.
If nitrocellulose can be completely dissolved, it means nitrification is complete; if it dissolves in a small amount, it means nitrification is incomplete; if it is only soluble in acetone, it means nitrification has passed.
Standing in front of the operating table, Yu Hua had a stern face. He put down the notebook and pen that recorded the first experiment in making nitrocellulose. He picked up the beaker containing sulfuric acid in his right hand and poured it into the large-dose beaker containing nitric acid below. Standing next to him was a small man holding a small glass of nitric acid. Xu Rui of refined cotton.
According to the proportion requirements specified in the experimental records, Yu Hua quickly prepared the mixed acid that met the requirements.
"Xu Rui, put in 10 balls of refined cotton." Yu Hua placed the mixed acid solution that was thoroughly stirred on the table and said to Xu Rui.
"yes."
Xu Rui nodded, took a step forward, took out a total of ten small balls of refined cotton that had been deseeded and removed the stolen goods, and carefully placed them into a large-dose beaker.
After all the ten balls of refined cotton were melted into the mixed acid solution, Yu Hua picked up the beaker, put it aside to heat the water prepared in advance, and used a glass rod to continue turning the refined cotton that was undergoing esterification reaction.
After the esterification reaction, refined cotton will become a flammable and explosive substance - nitrocellulose.
