When the news came, Li Chen was discussing the war situation in Hebei with the prime minister. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 info Hebei situation, one report a day. Yesterday, I received the news that it had arrived, and a barbecue meeting was going to be held to reward the front-line soldiers. It is estimated that there will be a decisive battle in these two days.

Youzhou City should be fighting now, Li Chen thought. The message delivery is still too backward, and now I received the news, which was two or three days ago. Even if the Chinese have known for a long time that to build a post station, what hundreds of miles to expedite and quickly transmit information from all sides. But it's still too slow.

Li Chen has been thinking about how to improve this situation for a long time. Message always comes first. Only with quick information can we rule over the people of the land. The reason why all roads lead to Rome is for the convenience of the Romans. Transporting soldiers, supplies, and delivering information needs.

With carrier pigeons? That's impossible. Don't say that carrier pigeons will know the way, in fact, it is also troublesome. The carrier pigeon is not an ancient mobile phone, and it transmits messages casually. He can only travel to and from one place on a regular basis. I can't bring much information yet. In addition, the pigeons, for a while, get lost. It is not a 100% guarantee that it will reach its destination.

There is a pigeon racing event in Taiwan. The pigeons were specially trained by their owners. It's going to get lost. And there is no room for loss in delivering a message. In addition, pigeons have many natural predators, and it is not safe to send messages. Therefore, in order to rule in the future, Datang wants a new technology for transmitting information.

Telegram, Datang needs telegram. Don't talk about radio, even if it's wired telegraph. Although there was a chance that the telegraph line would be destroyed, it was much faster than the post station. If Datang had a telegram, he wouldn't say it every day, he would receive news before the war on the front line.

And will let him be so maneuvering, as soon as he heard the news, he immediately took the prime ministers and went straight to the Royal Academy. It was because of the telegram that it was done.

There is electricity, and in theory it should be a telegraph. The principle of telegraph is to use electric current to transmit information. And the inventor of the telegraph was Morse, who was the originator of the magnetoelectric phenomenon, and Faraday completed his telegraph.

Therefore, Datang can generate electricity, and the telegram should have appeared a long time ago. Datang is currently able to generate electricity, as well as batteries, and the electromagnetic phenomenon Li Chen has long proposed. will get stuck, mainly because Li Chen doesn't understand how to use the current to generate sparks.

Morse originally thought of using electromagnetic phenomena to produce sparks when electricity passes through. Then the spark is present and long, indicating a set of symbols, and this is used to communicate. Finally, he completed the application of the telegraph by using electromagnetic phenomena to control moving rods and draw symbols on paper.

Just to study this, more than a dozen people, delayed for several years to complete. Therefore, Datang's scientific research foundation is still weak. It's good to have such a result, with his golden finger, otherwise it will take off for a long time.

'Quick, quick, show me this.' Li Chen ran into the research institute, several prime ministers followed, they were all curious, what made the emperor so gaffe, along the way they asked, Li Chen only said that he could change the Tang Dynasty and change the major invention of mankind. I just don't say what it is.

The Royal Research Institute, Li Chen set it up in the Taiji Palace. For the sake of secrecy, it is simply located here, and it is convenient for me to go over. He changed the West Inner Garden, which was originally a royal garden, and the Hanguang Hall at the back, into the Royal Research Institute.

On the one hand, the environment is good. Giving those researchers a good environment is also the policy of the future generations of enterprises, giving researchers a relaxed and beautiful environment.

The West Inner Garden is just right, he has no shortage of royal gardens, and the ready-made garden environment is good, and it can be set up without spending too much money. You just need to build a few rooms.

He built many research rooms using cement and bricks as raw materials. In the West Inner Garden, I am not afraid of those idle people and other snoops. Direct secrecy is raised to the maximum.

All the way from the Ayaki Palace, go straight to the West Inner Garden, and then let them show, 'First of all, Li Xiang, you can come, and then Cui Xiang, you can say a word casually, only you know what to say." Li Deyu and Cui Xuan were confused, the two exchanged ears and said something casually, and then Li Chen asked Cui Xuan to go to another room. Then he told Lee Deyu that he had just spoken to Choi Hyun and told the researcher again.

Li Deyu said, and saw the researcher sitting a few days ago, flipped through a book, and then the edict seemed to follow the contents of the book, in a strange metal, it should be a machine, and the metal machine went ashore and pressed.

It seems to be pressed regularly, and then Li Chen added another sentence, asking Cui Xiang to come back after receiving the message. He flipped and pressed again. In the end, Choi Hyun, who had just gone out, came back with a shocked face.

"Cui Xiang, tell everyone what happened when you went to the room just now. Choi Hyun was shocked and told what had just happened in the room.

As soon as he got past the room, he saw several people in the room, all researchers. Then a researcher sat down in front of him. After a while, a machine in front of him began to move automatically. He didn't understand, no one was in control, why the pole would automatically draw symbols on the slip of paper.

Then, after the machine had completely stopped, the researcher tore off the note, flipped through the book, and repeated what he had just told Li Deyu and him, which should only be known to the two of them, and said that the emperor asked him to get the information and go back to the room just now.

After he finished speaking, all the prime ministers looked at the machine, and then at the two prime ministers who were still in shock, and Zhou Qi couldn't help but ask, "Li Xiang, Cui Xiang, what did you say just now?" ''It's nothing, it's just that I'm worried about the war in Hebei.'' Li Deyu replied.

'Cui Xiang, but not a word? ''Just now, the saint gave an explanation, and I received the news, so I came back here?'' Choi Hyun didn't answer the rhetorical question, and saw everyone nodding together, which they had just heard. Then, except for Li Chen and the researcher, everyone fell into shock.

They had all just witnessed that Choi Hyun knew what was happening in this room in a room that was not far away, but it was impossible to transmit information in a soft voice. The people in the other room actually knew about things that only Lee Sang and Choi Sang knew.

No one ran out to ventilate the news, no one yelled. It's this machine, I don't know how to use the immortal method, and I pass the news out.

'Oh, what Li Xiang and Cui Xiang said will go down in history. Li Chen said with a smile. Although the distance was a little shorter, the first official experiment in history of telegraphy was 6.5 kilometers away. The distance of this Datang experiment is only tens of zhang and less than 100 meters, but it has confirmed the feasibility of telegraphing.

'What is this book?' The prime minister was very curious and circled around the telegraph machine, and Zhou Qi and Zheng Lang tried again, and the result was still the same. It was simply amazing, and then Wei Mo was so curious that he picked up the book that he had just flipped through by the researcher, and found that it was just a dictionary.

Common, newly released Datang dictionary. The phonetic notation is attached, and the book is also on his shelf, the only difference is that the phonetic is coded on it.

That's right, this is the universal cipher, the telegram has a universal cipher, there are only 26 letters in English, and it is easy to form a cipher. Li Chen simply used the newly invented phonetic symbols, with numbers, and used them as passwords. Although the number of words is a little more than the English alphabet, it is also more concise.

The name is called the universal cipher, and he did not take the cipher as his own name, as the inventor of the telegraph did. Originally, I wanted to reward the researcher, and call the researcher's name, but no one wanted to take the credit.

Most of the principles were mentioned by Li Chen, they felt that they were craftsmen, and they completed it according to Li Chen's instructions, but it dragged on for so long, they felt very ashamed, and they didn't dare to take the credit, and in the end, Li Chen simply called this universal password.

'This.... Wei Cong touched this strange thing and didn't know what to call it, Li Chen immediately understood, and explained that this was a telegram. The telegram, so strange the name, Wei Cong asked, 'This telegram, the distance, is so short?' ’

Of course not, it's just that we are in a hurry, and in addition, long-distance matchmaking is relatively long, distance is not a problem, as long as we can get through, the long and short distances are the same. ’

'Do you want to pull the strings?' The answer was a researcher, who took the prime minister outside and pointed to the black, high wire, "That's the telegraph line, and the telegraph is to be delivered by the telegraph wire." As long as you take the telegraph line, even if it is a thousand miles or thousands of miles of communication, it is a matter of the blink of an eye.

'Is it possible to protect confidentiality by communicating with this thing?' Du Mu asked a key question, he was a soldier of the military department, and immediately thought of it, if such a telegram could be set up on the front line, then in the Anshi Rebellion, the emperor was in Beijing, and he could also remotely control the Tongguan army, and if there was any news on the front line, the Beijing division could know it as soon as possible. Maybe there would not have been a tragic incident when Xuanzong forced Ge Shuhan to fight.

'Secrecy is a problem, and anybody who gets on that wire can steal information from it. The researcher pointed to the telegraph wire, "but we have been thinking about this for a long time, and we need to use a code book to send a message, and as long as the code is not leaked, even if it is intercepted, it will not be understood." ’

'Is this black skin?' Zheng Lang pointed to the black outer material, "Although I don't know much about telegraphs, I also know that this wire is made of metal, and it won't rust if it is put outdoors for a long time?" ’

'It's rubber. It is not afraid of wind and rain erosion, and can protect the wires. Said that this rubber is also a big harvest for Li Chen to develop sea trade.

As we all know, the origin of rubber is Brazil. Li Chen didn't have a plane, he didn't cross over, he took rubber seeds with him, and the ship to explore the Americas had just set off, where to get rubber?

But who said it was rubber? This is rubber. It's not that he's playing with words. In fact, all over the world, it is very similar to rubber, and it will flow milky white material when cut, similar to the species of rubber, and it is native to Asia, in fact, there are still there.

This thing is the Indian ficus. The origin is India, although it is not the same as rubber. But he can produce gum in every way.

Rubber is a genus of rubber trees in the Euphorbiaceae family. Ficus india is a genus of Ficus in the order Nettle, native to Southeast Asia, where it grows from Sikkim, northeastern India, Myanmar, northern Malaysia and Indonesia.

This tree, also known as Indian rubber, Indian oak. Like the rubber tree, it was once mistaken for the same species as the rubber tree. Actually, no. However, it does not prevent it from having the same effect as rubber.

When Li Chen first set sailing, he paid attention to this species. Although he didn't know that there was such a thing, he knew that there were plants with a similar effect to rubber in Southeast Asia, and there was no need to travel thousands of miles to Brazil to find rubber trees.

After discovering this kind of thing, he consciously went to collect it. The rubber stick is also used by the Indian banyan tree. There are quite a lot of this species in Southeast Asia, and it is not troublesome to collect. The local natives were happy because they could exchange a lot of things from the Tang people.

Of course, this thing has drawbacks, and the reason why it was replaced by rubber trees in later generations is because his latex production is small, and it is not as productive as rubber trees. The growth environment of the two is similar, and the Indian ficus is naturally not widely used.

'Militaristic weapons. After listening to the explanation, when he returned to the house, Li Deyu's eyes lit up, and he touched the telegraph with excitement, why it moved by itself, and he didn't understand the principle or anything, but he knew that this thing had value.

With this thing, there is no point in what six hundred miles are urgent, eight hundred miles are urgent. Messages were delivered so quickly that now the inns could be abolished. If this thing is widely distributed in the world, then in Beijing, even if it is as remote as Longxi or Yazhou, any message transmission is as fast as electricity. The telegraph is really as fast as thunder and lightning.

Obviously, Li Deyu misunderstood, but this misunderstanding is not wrong, although it is very inconvenient to pull the line, but no matter how inconvenient it is, it is not inconvenient to maintain the post station.

Maintaining the post station is an expense that Datang does not know. Not only for officials to travel, but also for maintaining smooth roads, it is also an expense. Of course, Li Chen will not abolish the post station, but he always thinks about how to reform the post station. Now is the time. Post station reform can be introduced.

With the telegraph, the importance of the post station has diminished, and it will not be abolished for the time being, but he can reform it freely. He planned to overhaul the inn.

At that time, the post station will not only not become a burden for the imperial court, but will also save money for the imperial court. The imperial court does not need to spend a lot of money every year in this regard, and it can also make the post station rich and reduce the burden on the imperial court.

He planned to divide the station into two parts. Now the Datang Post Station has two functions, one function is to entertain past officials and students who have passed the examination in Beijing. On the other hand, it is to pass letters and official documents of the imperial court.

He wanted to separate the two parts, and the part that delivered official documents became the postal system. He wants to establish the Datang postal system. Development of the whole Tang Dynasty people, everyone can pay to use the postal system.

The post station has a part of the people, and he is planning to make this part of the semi-private sector. The post station will be responsible for its own profits and losses, and will also have to take responsibility for repairing the road. It's not that if there is a telegraph, the roads will not need to be maintained, and people and goods will not be able to be transmitted by telegraph. Semi-private, no tax is paid, but the responsibility for road maintenance is handed over to the post station.

I think they will be very dedicated, after all, whether the road is smooth or not is also related to their income habits. The imperial court can also reduce a lot of expenses.

Just when Li Chen and several prime ministers were excited, the war in Youzhou had reached its highest point, and the two sides were about to fight. Both sides are full of confidence in victory, who will kill the deer?