Afterwards, Tang Shaoyi came to Li Yu and said, "It's really interesting. The commander-in-chief will definitely want this thing very much."
Li Yudao: "Instruments are just instruments. What is really important is the need for communication talents."
Tang Shaoyi said: "Last year you gave the commander-in-chief a suggestion to set up a telecommunications and telegraph school in Beiyang. It seems that you have already considered it."
Li Yu said: "That's it. We are too backward in this aspect. In fact, Japan has been intercepting our telegrams."
Tang Shaoyi asked in surprise: "Intercepted?"
Li Yu said: "To be more precise, it should be called monitoring."
Tang Shaoyi couldn't believe it: "It's all encrypted, how is that possible!"
Li Yu said: "The communication is not reliable, and the password used before was obviously too simple."
Tang Shaoyi felt his body tremble: "You mean, we were openly fighting against the Japanese back then?"
Li Yu said: "Not only during the war, but also during the signing of the Treaty of Shimonoseki, we were completely monitored."
Before leaving, Duan Qirui unexpectedly took out a Browning M1900 pistol and several boxes of ammunition and gave them to Li Yu, "This is a gift entrusted by the commander-in-chief to my husband. Just treat it as a small gift from Beiyang."
Li Yu smiled and said: "What you have learned is some basic content, focusing on application. It is not difficult."
Tang Shaoyi said bitterly: "They said at that time that they wanted us to make an independent decision, and Li Zhongtang also contacted the capital secretly."
However, due to backward technology, it only trains some people to use radio equipment, which is far behind the Western powers.
But in the early 20th century, there were not even complex cipher machines. Decryption was indeed much simpler. The key was to master communication technology and be as upstream as possible.
Li Yu said: "Of course not. There must be a dedicated telegram team that monitors for a long time when not too nervous to obtain enough ciphertext, and then gradually understands the enemy's encryption rules and decrypts them."
Yuan Shikai made the final decision to order several sets of radio equipment, some of which were used for teaching in schools, and some of which were used for military testing.
Li Yu said: "The commander-in-chief is right. The school I plan to build focuses on the cultivation of scientific talents. I have also purchased a piece of land in Tianjin. I hope the commander-in-chief will take care of it in the future."
Li Yu sighed: "It's impossible even if you think about it."
Li Yu said: "The commander-in-chief is a member of the army, so he naturally understands that although everyone will encrypt information to a certain extent, any encryption uses a certain law, so the key lies in how difficult it is for people to discover this law. If
Just a simple correspondence or a regular change in sequence would definitely be easy to decipher."
Japan had actually mastered the code of the Qing telegram before the Sino-Japanese War of 1884-1894. However, due to limited domestic knowledge at the time, Qing court officials still believed that telegram communications were reliable, or they did not even know that this thing could be deciphered and monitored. As a result, Japan
Negotiations on the unfavorable Shimonoseki Treaty were at a further disadvantage.
Compared with the basic courses in surveying and mapping, ballistics, and mathematics and physics that were previously taught to them, the introduction to chemistry is relatively simple.
Cai Yubiao also smiled and said: "I told you, if you have nothing to do, practice your sword less and practice your pen more."
Tang Shaoyi asked: "Can the encryption really be decrypted?"
Tang Shaoyi instantly felt that the cigar in his hand was no longer fragrant. "Back then, Li Zhongtang communicated with the emperor by telegraph in Shimonoseki, Japan. Did the Japanese always know our trump cards at that time?"
Now let him see its broad applications before he can continue to invest money.
This is what Li Yu wants, and there will be many turbulent times in the future.
Sun Chuanfang said: "You have listened too little."
Yuan Shikai said to Duan Qirui: "Zhiquan, you have heard that the Telecommunications and Signal School will be done immediately!"
Duan Qirui took Li Yu to the Beiyang Armed Forces Crash Course to visit the students who admired him even more.
Li Yu said: "The commander is wise."
Tang Shaoyi said helplessly: "It's already passed. We didn't understand it at that time, but it's good to have you now, and the wireless telegraph machine you made."
Li Jinglin asked: "I've heard that you can make elixirs."
So after the initial meeting with the Japanese side, Li Hongzhang reported the situation to Emperor Guangxu via telegram, hoping to get the emperor's opinion. Guangxu warned Li Hongzhang in the telegram: "I originally hoped to win a point, and there is a benefit. If there is no negotiable change,
That is to say, I have made an agreement with him in accordance with the previous decree. I admire this."
Yuan Shikai often came into contact with high-level secrets and had to maintain correspondence with his subordinates or the capital. Of course, he was very concerned about this issue. After all, no one wanted to be seen naked and without any privacy.
Li Yu said: "The Japanese side is purchasing telegraph machines directly because of time constraints. If they are free in the future and gradually master the radio encryption method, they will still need to decrypt and monitor."
Li Yu said: "That's why I hope you can learn more about science, which will be useful in the future."
Li Yu also knew that he couldn't rely entirely on them. This kind of communication-related thing is really high-tech. Even a hundred years later, wireless communication will still be a cutting-edge technology, and the world's major powers are still fighting fiercely for technologies such as 5G.
Li Yu said: "In the future, more scientific and technological content will be used in wars, or in other words, science and technology will support national strength, and national strength naturally includes military strength. The strength of a country is all-round development. It is not enough to just develop a new type of army. There are many hidden
Stuff is also important.”
It was obvious that he had made a little bit of determination.
Sun Chuanfang was stunned: "Is there such a weapon?"
"You have to be called Imperial Master or Academician," Wu Peifu corrected on the side, "I didn't hear that Sir has become a foreign academician of the Royal Society."
As a martial arts fanatic, Li Jinglin is also known as the "Wudang Sword Immortal". Martial arts is as important as his lifeblood. Li Jinglin thought for a long time and said: "Then I will practice more brushwork."
Wu Peifu, who was once a scholar, said: "Sir, you are right, you will miss the books when they are used. You must read more while you have time now."
Li Jinglin said: "It just means the same thing! I like to say three years, and you can tell how long it is."
Tang Shaoyi often handles international affairs for Yuan Shikai, and is more sensitive to this matter than professional soldiers like Duan Qirui. He continued to ask: "What should we do then?"
Everything is difficult at the beginning, just take it step by step.
Beiyang's Armed Forces Accelerated School is generally a military academy and does not involve too much science. In the future, highly technical subjects such as communications and cryptography will have to be run by their own schools.
Every time I see these young warlords, I don't know how to get along with them.
Li Jinglin said bitterly: "It's not difficult at all. It took me a long time to understand the general outline of Sir's previous mathematics lectures."
Tang Shaoyi was not in the mood to smoke a cigar anymore and threw it on the ground: "Brother Shucai, I will tell the commander about this technology immediately. You wait for me to come back."
Li Yu said: "It is not something that makes people live longer, but it is a poisonous gas that can make entire armies fall instantly."
Li Jinglin touched his forehead: "I know, one day is like three years."
Li Yu smiled and said: "Hello everyone."
Yuan Shikai was really interested in radio. Even without Li Yu, historically he would have set up a radio training class around 1905.
Yuan Shikai looked at the radio equipment in front of him and couldn't help but marveled: "Master Emperor, you are really a genius!"
Yuan Shikai said: "Master Emperor, please speak."
Yuan Shikai said: "I understand. I have asked Zhiquan (characterized by Duan Qirui) to start opening a new school. The name will be the Telecommunications and Signal School you proposed."
Li Yu took out the introductory chemistry lecture notes in the textbook and said, "You can also study this book. Chemistry is also indispensable in basic science."
Yuan Shikai raised his eyebrows and said: "I see. In the war a few years ago, we mostly used the foreign telegraph system. They must know everything about us. It's like he took off his clothes and danced the knife in front of others.
Get a gun!”
It’s really impossible to walk without one leg.
Wu Peifu corrected him again: "One day is like three autumns apart."
Li Yu said: "Chemistry can do a lot of things, and the great powers may use it in military affairs in the future. It is necessary for you to learn some basic content, otherwise you will suffer a loss when the time comes."
This is a top secret in diplomacy. If you let others know it easily, you will definitely be in trouble.
Li Yu said: "The situation between Japan and Russia is becoming more and more anxious now. Once a war breaks out, wireless telegraph machines will be more suitable for battlefield use. After all, the two countries are far away from home."
Yuan Shikai asked: "Is it possible for us to know the contents of foreigners' communications in the future?"
"Of course," Li Yu said, "passwords are a big subject, and password strengths naturally vary. If you want to make communications secure, you need professionals in this field."
Yuan Shikai suddenly understood: "Although I don't understand the mathematics you are talking about, after listening to the emperor's explanation, I kind of understand it. This Telecommunications and Signal School seems to be an extremely urgent matter."
Duan Qirui himself graduated from the Beiyang Armed Forces Academy founded by Li Hongzhang, and also studied in Germany, but mostly in military schools, and the modern science involved was relatively shallow.
Now the Qing government does not know much about the management of radio. In the past, the establishment of telegraph lines was only approved by Li Hongzhang after he wrote many times.
Even for encryption, there was no follow-up such as Germany's terrible Enigma cipher machine during World War II.
Yuan Shikai finally understood why the West was so powerful, and sighed: "The emperor's vision is broad, and he is indeed a hero of the world. From now on, I should pay attention to education and develop more talents in all fields."
Before signing the contract, Li Hongzhang was shot and Japan made concessions at the negotiating table.
Duan Qirui rubbed his head: "It's becoming more and more difficult to fight now."
Yuan Shikai asked: "So, you can't know the ciphertext all at once."
Li Yu said: "It's a bit troublesome. The password is a very complicated thing, because it must be difficult for the enemy to decipher, and at the same time it must meet our own needs for rapid translation."
The Japanese side immediately knew the Qing Emperor's trump card, and naturally they would not make any more concessions at the negotiation table.
Duan Qirui solemnly said: "I understand!" Then he said to Li Yu: "In the future, I hope the emperor will give me more advice. We are all soldiers. To be honest, we don't know anything about cryptography or telecommunications. Let alone listen to the emperor's master.
It also involves advanced mathematics and physics. The brothers are all rough and can’t even read most of the big characters. Who would have thought that they would need to understand this in a war before.”
Li Yu said: "This is the situation."
"Hey! It's Teacher Li Yu!" Li Jinglin pointed to the distance and said.
Li Yu had no choice but to explain to him: "Cryptography is about mathematics, and of course it also involves linguistics and other content. But the most important thing is that long-term monitoring is required, so that you can obtain other people's encryption rules."
After Yuan Shikai learned of the situation, he immediately asked Tang Shaoyi to take Li Yu to Beiyang.
Therefore, if you want to continue to build base stations and improve domestic radio communications, you can only rely on Yuan Shikai from Beiyang.
Li Yu said: "The matter of deciphering may be different from what the commander imagined."
Li Yu said: "That's true, but the machine is dead. We can also use the machines given by foreigners to encrypt. It's just that we didn't have qualified cryptography and communications talents at that time."
In the Internet era, perhaps more people should have heard of the concept of blockchain or Bitcoin. The encryption methods it uses are elliptic curves and hash functions, which are more complex.
Decryption during World War II and after was much more complicated than this, and RSA asymmetric encryption that appeared after that was even more difficult to break.
Wu Peifu said: "We have heard about Sir, and everyone is now looking forward to you coming to take a few more classes."
Several people went up to greet Li Yu: "Emperor Master!"
Of course, the difficulty of developing science and engineering subjects is also there.
This has become a historical fact in later generations. Li Yu nodded: "It is true."
But by the time of World War I, most countries began to encrypt radio communications in the military field.
Li Yu said: "It is indeed very urgent, otherwise we will still be blind and deaf in front of the enemy in the future, how can we possibly defeat him."
Tianjin, Beiyang.
Although domestic universities began to develop during the Republic of China, they were basically focused on liberal arts and did not develop science and common subjects. The familiar masters of the Republic of China were basically in the liberal arts direction, and there were not many outstanding people in science and engineering.
Li Yu had used this pistol when he practiced marksmanship in Beiyang, so Li Yu recognized it at a glance.
Yuan Shikai asked again: "I'm still curious as to why the encrypted information is not safe and others can learn the ciphertext content."
Li Yu said: "It's far from enough."
Duan Qirui asked: "Is it troublesome?"
At the beginning of the 20th century, most people did not have a strong understanding of the principles of radio. Except for a few, such as the Austro-Hungarian Empire, encryption was not common.
"Of course it is continuous monitoring and decryption," Li Yu said. "This is why we need to set up relevant telecommunications and telegraph schools. I will also set up schools to train a group of mathematics talents."
Li Jinglin was most afraid of studying, and said melancholy: "I became a soldier but I didn't want to study. I didn't expect that I still couldn't escape."
"Mathematics?" Duan Qirui asked, "Isn't it a password?"
Tang Shaoyi said: "What Brother Shucai said makes sense. If even the communication is known, then what is the point of commanding? Otherwise, it will be like knowing yourself and the enemy and you can fight a hundred battles without danger."
Tang Shaoyi asked again: "You just said that time is tight, isn't it?"
Li Jinglin said in surprise: "Alchemy can still be used in fighting? Everyone is immortal, so why fight?"
But don’t stop doing it just because it’s difficult.
Chemistry is a very experimental subject in modern times. There are no instruments now. Even if Li Yu wants to teach them, there is no condition. He can only give them a brief lecture on the importance of chemistry.
"Oh? A school run by the Imperial Master himself?" Yuan Shikai said, "Don't worry, Imperial Master, you are only responsible for running the school in Tianjin. If you encounter any difficulties, I, Yuan, will definitely help you!"
Li Yudao: "It depends on whether it can be deciphered. Japan and Russia are currently using the equipment I gave them, and they cannot set passwords in a short time. Even if they can use the encoding system I gave them to perform encryption operations, it will be difficult for them to quickly set reliable passwords."
System. But it won’t be long before complex military-grade passwords appear.”
Li Yu asked: "Is it appropriate to carry a gun with you?"
Duan Qirui said: "You have the badge given by the commander-in-chief, so there is no problem. The commander-in-chief said that you are a great talent in the country, so you must protect your own safety. Mr. Xi has practiced with this gun, so he should be able to master it."
Li Yu cupped his fists and said gratefully: "Thank you, General."
Duan Qirui said: "You don't need to thank me, Master. Beiyang has always been grateful to you."
Li Yu looked at the gun in his hand, hoping he wouldn't need it.