Although the rudimentary and primitive telegraph had already been used before the establishment of the Yuan Dynasty, it had played an extremely important role. That's why. In the past 20 years, the Ming Dynasty has established a telegraph network covering all provinces of the country and connecting the Nanyang Zhuxia.

The emergence of the telegraph network fundamentally changed the Ming Dynasty's grasp of information. But on the battlefield, the most widely used is still carrier pigeons, these specially trained communication pigeons, on the battlefield is extremely widely used.

Unlike hundreds of years later, when armies had radio stations, communications in this era were extremely important, and if the troops at the front wanted to contact the troops in the rear, they had to use carrier pigeons carried by the army to transmit information. It turns out that trained pigeons can fly about sixty miles, enough to pass a note with an order, and some good pigeons can fly farther and be used to transmit information over long distances, but in the Ming Dynasty these long-range pigeons have been replaced by telegraphs, and pigeons are often only suitable for short-distance communication on the battlefield.

During the war, the notes carried by those specially trained carrier pigeons often became a lifesaver for many troops, playing an extremely important and even irreplaceable role on the battlefield. Especially for small units on the front line, carrier pigeons are often the most effective means of communication between them and the rearguard. Almost every squad in the Ming army carried carrier pigeons. It is used to maintain contact with large forces in the rear. The Manchus, as enemies, have also learned to use carrier pigeons over the past few years, and have also used these humble pigeons on the battlefield on a large scale to transmit information and orders.

And when Jingnan fell into the siege, both the offensive and defensive sides seemed to be extremely dependent on carrier pigeons, the defending side relied on contacting the outside world, and the besieging side needed carrier pigeons to deliver news, and because of this, both sides invariably chose to ignore the carrier pigeons flying in the air, and seemed to have chosen to raise their noble hands, however, sometimes, they would still hunt to obtain the information carried by the carrier pigeons, but after several attempts, both sides chose to give up.

Almost at the same time as the carrier pigeon was put into the battlefield, the Ming army developed a communication code for transmitting intelligence, and the Qing army also learned to use the password after suffering losses for many years, and most of the time, even if the carrier pigeon shot the opponent, it was not necessarily able to crack the opponent's code.

However, even so, both sides will still send their best musketeers to shoot the carrier pigeons flying through the air in order to obtain information. Almost every day, a few pigeons, or even a dozen pigeons, are killed, and the information carried by the pigeons will eventually appear on the desks of intelligence officers on both sides, but most of the time, this information is often a piece of waste paper. After all, in the absence of a code, intelligence is just a piece of waste paper.

"Again!"

Again, Li Qingyun said helplessly. At the same time, he put the information he had just obtained on the table.

"To be sure, Jiannu used a new password!"

As the codebreaker of the Military Division, for him, deciphering the code itself is his job, and in school, what he learned is this, cracking the code of Jiannu is also an extremely easy thing, the reason why it is easy is not because the password of Jiannu is not complicated, what is the difference between heaven and earth plus numbers, it seems to be extremely cumbersome, but in fact, the Military Department has always mastered their password - no matter how complex the password is, it can't withstand someone leaking secrets, even together with Jiannu's backup password, There is also a copy on the side of the military department. The "chess pieces" that infiltrate it will naturally take out the password and hand it over to the military commander.

Therefore, the orders carried by the carrier pigeons of the Qing army on the battlefield were not a secret to the Ming army at all. In many cases, it is precisely because of the mastery of the Manchu code that the Ming army can firmly grasp the initiative on the battlefield. But now this information is different from usual. His password is completely different from what it used to be.

"Cracked?"

Gao Shiqi asked rhetorically. Although he knew that sooner or later the Manchu Qing would definitely use the new password, he didn't expect the other party to react so quickly.

Of course, what was even more unexpected to him was that the inside line that infiltrated the Manchu Qing did not pass back the relevant information, which was what he couldn't figure out the most, after all, according to past experience, he would get the new password as soon as possible, but this time there was no information about the Manchu Qing changing the password.

What's going on?

What caused this change?

"No, but it's certain that they have a new password, and if I'm not mistaken, there must be extremely important information in these pieces of information."

Any enemy will take the initiative to learn, and Jiannu is no exception, they learn from the Ming Dynasty's extensive use of carrier pigeons on the battlefield, learn the Ming Dynasty's cipher transmission, and they also learn the risk prevention of the Ming Dynasty. The so-called risk prevention is the creation of a special password for a certain task, which may even be known to only a few people.

"Is there a way to crack it?"

When Gao Shiqi heard this, he immediately became interested. Although he knew it was very difficult. But sometimes miracles happen. After all, facts are impermanent, and there are no absolutes.

"It's very difficult, it seems to use the sexagenary branch plus numbers, from the word set to speculate, they should have a corresponding codebook, it may be one, or several books as a coder, I think this information may have used three books as a coder, not to mention the page, word speculation, it is these three books, I don't know, what kind of books these three books are, everything is in vain, and its organizational rules are different from the past, at least in the short term, it can't be deciphered at all......"

Li Qingyun's answer made Gao Shiqi fall silent, he did not urge his subordinates to strictly order him to decipher, but chose to accept this reality, anyone who is engaged in intelligence work knows that deciphering the code is not forced to promote, it depends on knowledge, and it also depends on luck.

"Looks like they're planning something big!"

Staring at the inexplicable piece of information, Gao Shiqi sighed with emotion.

"Definitely, yes, otherwise, they wouldn't use such a complex password, and it has never appeared in the past, it is certain that there are no more than ten people inside the Manchu Qing who know this set of passwords, and maybe even less......"

After a pause, Li Qingyun looked at Gao Shiqi and said.

"Could it be the Jiannu chieftain? I had heard that the person was interested in passwords and had made up their own passwords......"

"It's possible, after all, ......"

Gao Shiqi smiled, his smile with some helplessness.

"They made up passwords, or did they learn from us, and even their person in charge graduated from Qinghe Academy, so what? If it had come from them, the code would have been passed on to us. ”

In the process of the Manchu Qing Dynasty sending young people to infiltrate the academy to study, there were also many people who were rebelled and became the "chess pieces" of the military department, and those "chess pieces" have always played an extremely important role.

Because of this, in some cases, they tolerated the infiltration of the Ming by the Manchus. It seems that it is not beneficial to the Ming Dynasty, but in fact, through this infiltration, it is more beneficial to the Ming Dynasty, and it is through those people that the Junzheng Division has completed a high degree of penetration into the Manchu Qing Dynasty.

"If it was speculation before, now ......"

His finger tapped on the note, and then Gao Shiqi said with a solemn expression.

"Now, it's basically certain that Jiannu still hasn't given up, they're planning a big thing! Well, if you can decipher it, you can decipher it, if you can't......"

It's only when you're planning something big that you suddenly change your password. Otherwise, they wouldn't have had to. But what kind of big event will it be?

On the battlefield, the most difficult thing to see through is the fog of the battlefield, and the task of intelligence officers is to help the commander see through that fog. But how many people can see through all this in many cases?

Shaking his head, Gao Shiqi sighed.

"You can't force this kind of thing, can you?"

Soon, Gao Shiqi came to Li Dingguo's face, as the chief and deputy of the army, his task is to provide intelligence support to Li Dingguo, after the siege of Jingnan, he directly controlled the contact with the "chess pieces" in the city, when he put out the information he had one by one, Li Dingguo said with a solemn expression.

"You mean, the dark line in the city, I think Jiannu is making a plan to break the current siege?"

As the commander of the Western Expeditionary Army, Li Dingguo, who personally formulated the entire siege plan, was very confident in his own deployment. He didn't feel that he had any loopholes for the Qing army to exploit.

"Well, it's not so simple for them to break the siege, although it's just a siege with trenches, but there are fortresses between the trenches, the Qing army wants to break the siege, it's basically a fool's dream, we want to attack the city is simple, but Jiannu is not us, they don't have siege artillery, they can only use people to pile up, use people to gnaw, don't wait for them to gnaw down, it is estimated that people will lose about a lot."

Shaking his head, Li Dingguo said with great confidence. As a commander, he has fought for many years, and this self-confidence is still there.

"They want to break the siege, and there is no possibility at all."

When he said this, his tone was full of mockery.

"But the king, according to the information they have so far, they do have plans in this regard!"

Gao Shiqi hurriedly reminded.

"It doesn't matter, if they want to go out of the city to counterattack, it's also a good thing for us, to be honest, after such a long siege, the brothers are tired of it, they can take the initiative to attack, we just stand in the trenches to shoot targets, so that the brothers can have something to do, which is a good thing for us......"

Meddlesome......

Gao Shiqi is not as confident as Li Dingguo, as the intelligence officer, he has always considered problems from the worst perspective, so he asked again.

"Yes...... What if, my lord, they break through our defenses? ”

Considering Li Dingguo's face, Gao Shiqi hurriedly added.

"Of course, it's just a hypothesis, even if there is a 1 in 10,000 possibility, it should also be considered, of course, under the knowledge, the king's deployment must be foolproof!"

Even when he opposes it, he does not forget to compliment the other party, which is one of the reasons why Gao Shiqi can be the chief and deputy of the Western Expeditionary Army at his young age, and of course it is not the main reason.

"You are suspicious of Ben Shuai!"

Staring at Gao Shiqi, Li Dingguo said coldly.

"Question Ben Shuai's deployment, right?"

The change in his voice made Gao Shiqi hurriedly say.

"I don't dare, it's just ...... Duty! That's why I make a bold assumption......"

When he said this, Gao Shiqi only felt a cold sweat break out on his back, and Jun Zheng ...... For the chief general, it is never a good role, on the one hand, they maintain military discipline, preside over military law, and at the same time play the role of supervising the army. The supervising army, from ancient times to the present, has not been liked by the main general, but until now the military has not clashed with the main general, and both sides are careful to maintain the border - operational command.

Of course, Gao Shiqi knew very well about this boundary, and he would not touch it, but he knew very well that the person in front of him was not an ordinary general, but a king with a different surname in the Ming Dynasty, and he was deeply trusted by His Majesty the Emperor. If there is a conflict between the two sides, without waiting for His Majesty to speak, it is estimated that the military director will transfer him back first.

"Bold assumptions, bold assumptions......"

Repeating these four words, Li Dingguo looked at Gao Shiqi seriously, and then asked rhetorically.

"Gao Shiqi, many people say that you are a smart person, why did you contradict Ben Shuai at this time? Aren't you afraid of this king? Believe it or not, as long as Ben Shuai expresses his dissatisfaction a little, the military department will at least transfer you back! If Ben Shuai is not bad, even if he doesn't let you sit on the cold bench, he will transfer you to the place where the bird doesn't. Don't say anything about the bones of the army! No matter how hard the bones are, they can't be as hard as a hammer! ”

Junzheng's bones are hard, this has been proven countless times over the years, and this is also the pride of Junzheng, in many cases, they are proud of it, and do everything possible to maintain Junzheng's bones.

"What the king said is good, and the subordinates are soft-spoken, but the duty lies!"

Gao Shiqi, who originally seemed to be nervous, calmed down when he heard this, and he no longer suffered from gains and losses as before.

The bones of the army!

This is the pride of all Junzheng. He raised his head, met Li Dingguo's gaze, and said in an extremely firm tone.

"There are some things that must be done, even if it is offensive to the king, I will not hesitate to do it! Otherwise, if you can't stick to your duties in the future, your military prestige will be damaged, and even if you die for your crimes! ”

"Okay, okay, you're dead!"

Staring at Gao Shiqi, Li Dingguo, who seemed to have a serious expression, suddenly laughed.

"Today, this king has finally seen the bones of your army! Okay, then the king will tell you why the king is not worried! ”