In a large mansion of a wealthy merchant surnamed Wang in Yunzhong Prefecture, General Li Jing set up a temporary general's mansion as a front-line command for commanding the Tang army. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

In the evening of that day, at the gate of the general's house, a man dressed as a peasant came, and when he came to the door of the palace, he knocked on the brass ring on the gate, and in the observation port on the gate, a servant dressed as a porter appeared, and he asked, "Who are you looking for?" ”

Someone came in and handed in a waist card.

"Please wait a minute." The porter took the waist card and closed the window.

After a while, the gate opened, the farmer entered, and a middle-aged officer smiled and said, "Captain Xiao Cheng, the marshal is waiting for you." ”

The person who came was Cheng Chumo. He saw the general Li Jing and said, "Marshal, His Royal Highness King Liang has escorted the princess of Tiele Department and has come outside the city, you see, when will it be convenient for them to enter the city?" ”

Li Jing said: "Tonight, I will inform the south gate and enter the city at midnight." ”

In the middle of the night, King Li Su of Liang and his entourage quietly entered the General's Mansion.

The next morning, in a study, Li Su, the king of Liang, and Li Jing, the general, met alone.

Before that, Li Jing didn't know the real purpose of King Liang's visit. He asked, "Your Highness, why did you come back to this city?" Chances are, this place will become a battlefield, it's too dangerous here. ”

Li Su took out Li Shimin's handwritten letter to Li Jing and handed it to him. After Li Jing read it, he was quite unimpressed. He believed that he was fully capable of commanding the war against the steppe tribes, and that he did not need a child with no hair to dictate. He also didn't think that King Liang would be able to provide any useful help.

Li Jing is 60 years old this year, and he is already an old man. Naturally, his mental activities will not be revealed.

He asked very kindly: "The emperor asked me to cooperate with His Royal Highness, I don't know what your plan is?" ”

Li Shimin relied on Li Jing militarily and respected Li Jing very much, and on private occasions, he always called Li Jing Brother Jing.

If Li Su is according to his seniority, he can call him uncle. But he is already in his sixties, and he is a teenager, so it is not appropriate to call him so. As a result, he could only call him an official title.

Li Su said respectfully: "General, you are my Tang Dynasty military god, my father asked me to come here, just to help the general in some details, I don't understand military matters, everything is up to the general."

I have come this time to inform the general of some information on the grassland. ”

Immediately, he introduced the latest developments of the major tribes on the grassland, and told the wolf king plan formulated by him and Li Shimin as it was.

Li Jing listened to Li Su's introduction and was very happy.

Li Jing was a military genius, but he was relatively weak politically. At the time of the Xuanwumen Incident, Li Shimin sent someone to inform him and ask for his support. At the moment of changing the world, Li Jing chose to wait and see and did not support Li Shimin. This became his biggest political failure.

Li Jing's military talent lies in the fact that when the confrontation between the two armies has already taken shape, he is good at grasping the weaknesses of the other side, mobilizing troops in a timely manner, and dealing a heavy blow to the enemy. In short, it is a matter within the battlefield, and he is at ease.

He is not good at political and diplomatic tactics outside the battlefield.

The characteristic of the war between the Tang Dynasty and the grassland peoples is that the Tang Dynasty is always in a passive state. The steppe tribes are nomadic people, they move at any time, and it is not easy for the Tang Dynasty to grasp their whereabouts. Their army is all cavalry, and on the long border line of Datang, they can attack at any time, and Datang is tired of coping.

Li Jing had a headache for the grassland tribes, because he didn't know when they would come and where they would attack, and the battle was passive. Although, relying on the strong national strength of the Tang Dynasty and a large number of generals who were able to fight well, including Li Jing, they finally repelled the attack of the grassland tribes, but their own casualties were very large, and the grassland people invaded the areas through which they passed, and the losses of the people were also extremely heavy.

The plan of Li Su, the king of Liang, made the Tang army move for the first time in a state of grasping the enemy's movements at the beginning of the war, and the battle was much easier to fight. Of course, Li Jing was very happy.

Li Jing said: "The plan of the emperor and His Royal Highness, the minister fully agrees. The minister then mobilized his troops and waited for news from His Highness. ”

Next, Li Su and the others stayed in the Temporary General's Mansion and waited for the news of Qi Bi Zheluo, who went undercover.

Li Su does not participate in military affairs, so every day during the day, he is in the backyard, chatting and playing with Du He, the Qibi Wuyun sisters and others. A lot of this time is spent with the dark clouds of Qibi and fully enjoying the sweetness of love.

One morning, the general Li Jing sent someone to invite King Liang and invite him to the front hall to discuss matters.

It turned out that the general Li Jing received a secret letter sent by the emperor, and when he opened it, it was full of strange numbers. These numbers, he had once heard, were called "Arabic numerals", which were said to have been learned by King Liang from his master.

The numbers on the letter, in groups and groups, are arranged in a regular manner, but I don't know what they mean.

The person who delivered the letter told Li Jing that he would find out if he looked for King Liang. Li Jing sent someone to invite Li Su, the king of Liang.

Li Su came to the front hall, and Li Jing asked: "Your Highness, I don't know what the emperor's letter means, please say that you can understand it, you see, what is said in this letter?" ”

The Tang Dynasty's method of communication, especially for important departments such as the military, was mainly to send people on horseback to deliver letters.

Messengers are prone to attacks during long journeys, allowing letters to fall into the hands of the enemy and leak secrets.

Because of the dispatch of Chebi Zheluo to go undercover in the Tiele Department this time, the messages between them were all top secret, and Li Su remembered the password communication.

The earliest recorded coded communication was in 405 BC, when the Peloponnesian War between Athens and Sparta came to an end. The gradual occupation of the Spartan army was to make Athens and Sparta lose both sides in the ongoing war in order to profit from it. Under these circumstances, Sparta urgently needed to find out the concrete plan of action of the Persian Empire in order to adopt a new strategic approach.

It was at this time that the Spartan army captured an Athenian messenger who had returned to Athens from the Persian Empire to deliver letters. The Spartan soldiers searched the messenger carefully, but for a long time they found nothing but an ordinary belt covered with disorganized Greek letters. Where is the information hidden?

The commander of the Spartan army, Lysander, focused his attention on the belt, and the information must have been in the jumbled letters. He pondered and studied these heavenly words repeatedly, and rearranged and combined the letters on his belt in various ways, but he couldn't solve it. Eventually, Lysander's confidence was lost, and he fiddled with the belt as he thought of other ways to get information. A miracle occurred when he inadvertently wrapped his belt in a spiral around the scabbard in his hand.

It turned out that the hazard letters on the belt actually formed a text. This was a piece of information sent back by an Athenian spy telling Athens that the Persian army was preparing to launch a surprise attack on the Spartan army when it launched its final attack.

Based on this information, the Spartan army immediately changed its battle plan, first attacking the unsuspecting Persian army with lightning speed, and crushing it in one fell swoop, relieving its worries. Subsequently, the Spartan army returned to conquer Athens and finally won the final victory of the war.

Li Su took the letter and looked at it, and said, "General, this is a coded communication. ”