Xie Xuan's meaning is already obvious, Liu Yu is indeed a rare talent, and it is also very likely to be the biggest hidden danger of the Great Jin Dynasty, Xie Xuan's time is short, maybe he will leave Liu Yu not to kill because of his talent, so the desire for Wei Jie to grow up as soon as possible is even more urgent, because in his eyes, if Liu Yu becomes a disaster, the only one who can deal with him is Wei Jie!

It's just that Xie Xuan never expected that Wei Jie's plan to cultivate Liu Yu and support Liu Yu had already begun, so it is not as good as heaven, but that's it!

Wei Jie's natural will not reveal his heart to Xie Xuan at this time, in his opinion, although Xie Xuan is loyal, he is just stupid and loyal, Sima Dynasty has reached the point of hopelessness, to be honest, if it weren't for Xie An's very likely to have put his Wei Jie on the list of must-kill, maybe Wei Jie's really has an attitude of not caring about himself, let Xie An toss, what Liu Yu, Tuoba Jue, what do I do?

After chatting a few more words, Wei Jie, and Liu Muzhi went to the camp prepared by He Qian for them to rest, since Xie Xuan had already sent someone to Qingzhou to ask Liu Gaozhi for someone, there was no need for the two of them to go on another trip, with Liu Gaozhi's temperament, the two of them might even bring humiliation on themselves when they went to Qingzhou!

Since there are not many free tents in the Beifu military camp, Wei Jie, Liu Muzhi and Liu Muzhi share a camp tent, but this is also in the middle of Wei Jie's arms, and he just has something to ask Liu Muzhi for verification!

"Daohe, have you ever heard of a military sand table?" After there was no one around, Wei Jie's slightly mysterious question asked Liu Muzhi.

"Military sandbox?" Liu Muzhi was stunned.

"What's the sand table?"

The military sand table is something related to war when I hear it, but this sand table, even Liu Muzhi, who is known as well-read, can only shake his head and say that he doesn't know.

"It is a prop that uses sand to simulate the battlefield and the terrain around the battlefield according to a certain scale, and is used to specify the combat plan!"

Wei Jie's explanation is also quite difficult, in fact, he doesn't know much about the military sand table, and the explanation is a little dry, but Liu Muzhi seems to understand.

"Uncle Bao, I know what you're talking about, you're talking about simulated terrain!" Liu Muyi's expression was abrupt.

"When Qin Shi Huang unified the six countries, he personally made a simulated map, which not only built mountains, hills, cities, etc., but also simulated rivers and seas with mercury, and used mechanical devices to make mercury flow and circulate, which was extremely realistic!"

Wei Jie's was slightly stunned, and there was inevitably a trace of admiration for Liu Muzhi in his heart, although this Liu Muzhi loves to brag and often has a pompous style, but the material in his stomach is really not bragging, a genuine encyclopedia!

In the era of Qin Shi Huang, there was already a prototype of the sand table, and now hundreds of years have passed, and there is no reason why the military sand table has not been promoted and popularized!

I only heard Liu Muzhi continue: "It's just that this kind of simulated map is quite difficult to make, so after the first emperor created a precedent, it has not been promoted for hundreds of years, until the Eastern Han Dynasty, Guangwu Emperor Liu Xiu sent his general Ma Yuan to Longxi to investigate the terrain, and the horse aid who returned from the investigation was piled up with rice as a mountain, and explained the mountainous landform of Longxi to Emperor Guangwu!" ”

"Heap rice for mountains!"

Wei Jie's head nodded slightly, this should be the closest to the military sand table that was gradually perfected later, if you count it, it seems that there is no sand table at this time!

"Then why have so few people used this method of horse aid for hundreds of years? Even Xuan Shuai doesn't seem to have the simulated map you mentioned Mu Zhi? ”

"How can it be so easy!" Liu Muzhi said with a smile.

"Military maps are not comparable to ordinary maps, like the kind of terrain is dangerous, inaccessible, ordinary people will not go to places, it may also become a route for marching, ordinary military maps want to be drawn more finely, it is already quite rare, let alone the military sand table you said!"

"First of all, this person must have a certain ability to investigate the terrain, not to mention the ability to survive in the wild, and can also be followed by the escort team, but the foundation of painting skills is essential, and the investigation and painting must be completed by the hands of one person, otherwise it will inevitably produce unnecessary errors, and this may seem to be a small error, but it will be infinitely magnified on the battlefield, and eventually lead to irreparable serious consequences!"

Wei Jieshen nodded thoughtfully, the battlefield confrontation is indeed a difference of thousands of miles, and it cannot be taken lightly, he seemed to think of the military sand table a little too simple before, not to mention the military sand table, even if it is the most common military map today, any one, I don't know how many people have devoted their lives to it!

"It's too easy for me to think!"

Although Wei Jie's mouth said this, he was not convinced in his heart, making a military sand table may be quite difficult for the ancients, but for him from later generations, it may not be an impossible task!

"It's no secret, Mu Zhi had a grand wish before, that is, to draw a map, take over the terrain of the world, and become the most detailed map of the north and south, at that time, the map of the whole world, whether it is used by ordinary people, or the needs of military strategy, are based on the map drawn by me Liu Muzhi!" Liu Muzhi said regretfully.

"It's a pity that I, Liu Muzhi, have read all the maps of the world, but I have never been able to write, just because there are many places where I Liu Muzhi have never personally considered it, and I can't do it clearly!"

"Dao and you don't seem to be someone who gives up easily, why does it seem that you have already given up on this map?" Wei Jie, with a slightly teasing smile, said.

Liu Muzhi smiled bitterly, but he didn't hear the ridicule in Wei Jie's words!

"Knowing that you can't do it, it's not brave, it's really unwise!"

"Mu Zhi knows that he is afraid that he will not be able to complete this dream with the strength of his life, so it is better to leave a useful body and do something other meaningful!"

Although what Liu Muzhi said was definitely accurate, Wei Jie was skeptical, if Liu Muzhi was really so open-minded, he would not have been entangled with Wei Jie about his origin before!

"Dao and you don't have to be so discouraged, the map can't be drawn, why don't we join forces to make a military sand table that covers all the dangerous places in the world?" Wei Jie said with a smile.

"Uncle Bao, are you kidding?" Liu Muzhi looked at Wei Jie's stunned expression, and from his incredible expression, it was not difficult to see that Wei Jie's proposal seemed to him to be a fantasy!

"Of course we can't just rely on the two of us, if it's just us, I'm afraid we won't be able to make this sand table in our lifetime!" Wei Jie's smile.

"Dao and don't forget, we still have hundreds of brothers from the assault battalion in Stone City, and Liu Yu, one of the best scouts in the world, is about to join us!"