Seeing that the most famous generals of the Tang Dynasty were basically here, although Li Anran didn't know where to use troops this time, he finally didn't have to be as careful as he was at the beginning.

After all, even if Li Shimin wants to kill himself, which is extremely threatening and impossible to be controlled, he will not have to attract so many confidants to be the back. The only thing that is a bit depressed is that there is actually a sand table in the middle of this military aircraft deduction room that has obviously become a military aircraft deduction room!!

"General Cheng, is this a sand table?" When searching for the history of the Tang Dynasty, Li Anran, who did not care about this information search, pointed to the sand table with a large area and asked.

"Yes, sand table, why are the real person so surprised?" Cheng Yaojin, who was also a little confused for a moment, replied.

"How could there be a sand table?" Li Anran, who had always thought that this thing should have appeared in modern times, said dumbfoundedly.

"Why can't it be there? There are some in the Jinzouyuan, the Ministry of War, the palace, and the tents of the accompanying army, but it's just that ordinary people can't see it." Cheng Yaojin, who didn't understand why the other party was so surprised by a small sand table, explained.

At this time, Li Jing also walked up and said, "Real person, this sand table was found during the Guangwu period of Han Dynasty. There are also relevant records in "Biography of Ma Yuan in the Book of Later Han Dynasty". I wonder if there is anything wrong?"

"Uh..." Seeing the surprised expressions in the eyes of two famous Tang generals, Li Anran also knew that his reaction just now was obviously a bit of a big deal. He smiled and said, "There are sand tables in the mortal marching and combat in the upper realm, but because the relationship is too big, he was surprised."

Faced with such an explanation, Cheng Yaojin and Li Jing looked at each other and were moved in their hearts.

"Real person, I don't know what the difference is between all the sand tables in the upper realm?" Li Jing, who had been fighting for his whole life, asked.

"There must be differences, but, General Li, where does the sand table in the lower realm come from?" Li Anran, who knew that the other party would ask, organized language in his mind, and used this topic to delay time.

"This sand table is recorded from the Eastern Han Dynasty. It is said that when Emperor Guangwu of Han conquered Wei Xiang in Longxi, he summoned the famous general Ma Yuan to discuss the strategy of march. Ma Yuan was very familiar with the geographical situation in the Longxi area, so he used rice to pile up a model similar to the on-site terrain to deduce the strategy. This is the earliest sand table." The learned Li Jing explained easily.

"I'll just take it. Something important as a sand table actually existed in the early years of the Eastern Han Dynasty. Fortunately, I didn't believe in the plots in the online YY novels and took out the big killer like a sand table to show off. Otherwise, wouldn't this face be thrown away?"

Fortunately, I am glad that I am glad. After Li Anran listened to Li Jing’s professional explanation and carefully looked at the sand table, she found that there seemed to be a lot of difference between the sand table and the one he looked at. In short, it was too rough.

Seeing that he had found an entry point, Li Anran nodded in a pretentious manner, quickly organized the relevant language, and then said: "So that's it. It seems that there are many things in the upper and lower realms that have common ground."

"Real person, are you talking about the difference between the sand table in the upper realm?" As a general, even a barbarian general like Cheng Yaojin, who is "unlearned and ignorant", knows the true value of the sand table and asks immediately.

"There are still many differences." Pointing to the extremely rough sand table in front of him, Li Anran said: "In the mortal world in the upper realm, the most ordinary sand table is even more common than this. How can I say it, it should be more refined."

"More refined?" Cheng Yaojin and Li Jing did not realize what this meant, as well as several other famous generals who originally deduced strategies in front of the sand table, were shocked because they were too focused and did not notice that Li Anran came in.

"Yes, fine." Li Anran nodded and said, "I don't know where the sand table in front of you generals is. But I know that this sand table is too crude and it is not very effective for strategic deduction."

"By the way, General Li. If you can, can you tell me where the terrain is in this sand table? Of course, if it involves military aircraft, it is inconvenient to say something, just pretend I have never mentioned it. Don't make things difficult for you."

Just as Li Jing was hesitating whether he should say it, he heard a somewhat majestic voice coming from the door: "Pharmacist, since the real person has asked, you can just say it's okay."

When everyone looked at each other in the voice, they found Li Shimin, dressed in casual clothes, walking in from the door.

Everyone in the room, including Lee Anran, bowed at the same time: "See the Lord."

The difference is that Cheng Yaojin, Li Jing and others performed the courtesy, while Li Anran was just a simple Taoist bowing ceremony.

"You all beloved friends don't have to be too polite, get up." Li Shimin waved his hand with a warm and friendly expression on his face.

Unfortunately, after saying that, among all the people present, Li Anran did not take it seriously. The others still did enough etiquette and said at the same time: "Thank you, Master."

After the crowd had finished their politeness, they gathered in front of the sand table under the leadership of Li Shimin.

"Don't the real person want to know where the terrain is here? This is the Helan Mountains, this is Yin Mountains, this is Taiyuan, this is the clouds, and this is Baidao." Li Shimin, standing in front of the sand table, took over the work of the instructor directly, pointed to the crude mounds, small ditches, and small pits in the sand table, and said proudly.

"So that's it, so that's it..." Li Anran said perfunctorily at the areas with a dark face, but he thought to himself that this broken sand table is not as good as the castle piled on the beach by children in later generations.

"Huh? Real person, is this sand table wrong?" Li Shimin, who was showing off, stopped talking and asked after feeling someone's obvious expression that was not right.

"It's not wrong, it's just..." I really want to say that this sand table is not as good as the children, but considering this person's identity, it's better for Li Anran to decide to be more tactful. After all, he will continue to cooperate with Datang in the future.

"It's just what? But it's okay to say it." Li Shimin, who had known that the real person in the country, had many good things in front of him, didn't care about face issues at all, and said readily.

"Haha..." Li Anran, who smiled before speaking, said, "Sir, Mr. Cheng, Mr. Li and others have asked me before, what are the differences between the sand tables used in the upper realm and the sand tables used in the lower realm. I have said before, the biggest difference is that the sand tables here are too crude and simple."

"Too crude, too simple?" Li Shimin, who had always thought that he had become accustomed to the sand table in front of him, was a little confused when facing such an answer, just like Cheng Yaojin and Li Jing before.

"Let me explain it." Seeing that these ancient people were restricted by their knowledge and could not understand what they said for a while, Li Anran simply said openly: "Actually, what I want to say is that although this sand table looks like, it seems that there is still some lack of accuracy."

"The purpose of using sand tables during marching and war is to be able to see the form of both sides on the battlefield at a glance. It is also to provide more specific, more vivid and intuitive information for generals to facilitate the generals of a military to make combat plans and decisions based on this information. After all, this sand table is a tool for deduction for marching and war."

"Of course, if this sand table can be further improved, it can also be used for strategic deployment and virtual combat even when not in war. By the way, the so-called virtual combat is to some extent a paper talk, but it is not used in paper and words, but a sand table that is extremely close to the real environment."

"In our upper realm, there is a game called military chess. This kind of chess is different from Go. Each piece represents a military franchise. Some new games evolved from military chess have made extremely detailed divisions in terms of military chess. For example, infantry are divided into swords, spearmen, shields, etc.."

"As for sand tables, specific sand tables can be made according to different environments, climates, and even sky. If these chess pieces with detailed military genres can be integrated into this improved sand table, then, even in normal times, these sand tables can be used to perform some strategic virtual deductions. Although it is a game, does it work..."
Chapter completed!