Hongwu Daming: Why hasn't my son rebelled?

Chapter 10 Improved Sand Table
China has used maps to fight since ancient times. As early as the Battle of Zhuolu, the Yellow Emperor asked Cangjie to make a map of the battle location, which is the legendary "Historical Mapping".

In the true sense of the military sand table, in the period of Emperor Guangwu of the Eastern Han Dynasty, rice piles were used as raw materials to pile up terrain, cities, armies, etc. on the table.Then it gradually developed and improved. By the early Ming Dynasty, before the army fought, it had become a common practice to make military sand tables.

In Western records, the earliest sand table was invented in 1811 by the Prussian military adviser von Leswitz. However, as soon as the Western sand table appeared, it appeared in a very perfect form and was used as a As a means of entertainment and training, the sand table was not really used in practice until World War I.

As an art student, Zhu Qi naturally had no military education, but he was very familiar with model making, and the sand table was a kind of model.

If you want to make a sand table, you must first understand the terrain and other detailed data, which are naturally in the military camp.

There will be a martial arts lecture tomorrow, and there is only one day to make the map sand table. Zhu Qi did not dare to delay at all. After sending off the prince Zhu Biao, he took his little follower Zhu Di and went straight to the camp of the imperial guards without stopping.

In Hongwu year there will be 26 imperial guards. Tomorrow the martial arts lecture will be held at the Jinwu Guard, which will be stationed in the north of the imperial city. The two of them passed through the imperial city, exited the Xuanwu Gate, and arrived at the Jinwu Guard barracks.

Because they were ordered by the crown prince Zhu Biao, Zhu Qi and Zhu Di were not blocked from entering and leaving the barracks. In previous dynasties, it was impossible for them to enter and leave the barracks under the order of the crown prince. But at this time It was Ming Hongwu, Zhu Yuanzhang trusted his prince and his sons very much, the situation is of course different.

After finding the quartermaster and explaining his intentions, the quartermaster didn't dare to be negligent in the slightest, and hurriedly took out the actual location of the sand table and various data books, and even asked someone to bring up a picture of it. The sand table, of course they made it in advance.

The map used for tomorrow's martial arts lecture is around Zijin Mountain in the surrounding area of ​​Yingtianfu. The three peaks here are connected like a giant dragon, and the mountain, water, and city are integrated. It depends on the geographical advantages, mountains, rivers, forests and valleys, so it is a matter of course to use Zijin Mountain as a map to teach martial arts.

This finished sand table is a mountain piled with sand and stones in the center, and rivers, cities, valleys, lakes and other terrains are arranged around it. From the appearance point of view, it is very exquisite and beautiful, especially the city of Yingtianfu, the city wall They are all labeled in the same way.

But Zhu Qi frowned looking at this pre-made sand table, but Zhu Di didn't think it was inappropriate, instead he clapped his hands and said:

"Great, it turns out that this sand table is already ready-made. Big brother is obviously taking care of us. Third brother, let's change this sand table. If we use it directly tomorrow, it will be a pass!"

Zhu Di was happy in his heart, thinking that the matter of money must be settled, but after Zhu Qi read the data in a few books, he shook his head and said:

"No, we can't use this sand table directly."

"Ah? Third brother, why?"

Zhu Qi handed the brochure to Zhu Di, and sighed:

"I dare not use it. Looking at the data in the brochure, the size of Baima Lake and Yanque Lake are clearly recorded differently, but the size is marked on the sand table. The same is true for other lakes, not to mention the distance. After looking at this sand table, I don’t even know how far it is from Zijin Mountain to Yingtian Mansion. Apart from being beautiful, what’s the use of this sand table? The generals are not fools, and the eldest brother is not. Taking this out is just fooling around. Don't want to invest?"

In Zhu Qi's eyes, this thing is too substandard!Zhu Qina has become accustomed to using the grid method of modern thinking to make models in equal proportions. Seeing the topography in the sand table map in front of him, the lake is marked bigger than Ying Tianfu, including the height of the mountain, the length of the lake, etc. No.

Although he has not received military training, Zhu Qi has studied mathematics. Xiao Ming travels 1000 meters home and walks 1 meters in 100 minute. How long will it take to get home?

Zhu Qi didn't care that there were other soldiers of the Jinwu Guard nearby, and pointed to the sand table and said:

"There is not even a distance marked on the sand table, and many things are obviously exaggerated and do not conform to the book data. How long does it take for a marching and fighting person to get from one place to another? Can you figure it out?
Assuming that our army is in the north of Zijin Mountain, and the enemy is stationed on the south side of Zijin Mountain, I divide the troops into three groups, one way over the mountain and pretend to attack from the front, and the other two groups go around the left and right sides and wait for the frontal attack to start, then start pinching the enemy. You look at Zijin The east and west sides of the mountain are equally wide, and I don't even know how high Zijin Mountain is, how many distances there are on the left and right sides, when the three routes will send troops, and when they can meet up, I don't know. "

Zhu Qi does not understand the art of war, but time is a very crucial element in war. The invention of the watch was not for showing off at the beginning, but for accurate timing on the battlefield, so as to accurately complete the deployment of strategic policies.In Zhu Qi's view, the battlefield deduction that can't even take into account the time may not be as good as talking about war on paper.

Zhu Qi talked eloquently, which made Zhu Di stunned, but Zhu Di quickly asked:
"Third brother, the enemy is stationed by the mountain, it seems inappropriate for us to directly attack from the front of the mountain?"

Zhu Qi was taken aback for a moment, this is the same as someone else built a camp by the water, but you just wade into the water to attack, it's really a bit stupid.Sure enough, you shouldn't be chatting with Zhu Di about these military professional topics, as soon as you talk about it, you'll be in trouble!
But what Zhu Qifang just said was plausible, if he backed down at this time, then his prestige as an older brother would be lost!The most important thing is that a man will be a teenager until his death, which teenager doesn't love face?

Zhu Qi remained calm in the face of danger, without even turning red, he continued:

"Soldiers are tricky. The enemy is stationed on the mountain, thinking that no one will attack by climbing over the mountain. I just did this. I pulled two cannons up and bombarded the camp below. When the enemy was in chaos, the left and right armies took advantage of the situation to attack! "

Zhu Qi clapped his hands and said:
"Isn't it going to be done?"

The 14-year-old Zhu Di immediately showed admiration and admiration on his face, and the soldiers of the Jinwu Guard next to him also looked dumbfounded. Unexpectedly, this His Royal Highness, who was only in Yuanfu, showed no signs of arrogance. Don't lose to those generals who command the army, they are quite talented!

But Zhu Qi knew that he didn't even have half a bucket of water in military affairs, and he was afraid that others would ask, "How did this cannon escape the enemy's eyeliner and pull it up the mountain?" Such a question came, so hurry up Quickly changed the subject and said:
"Okay, let's not talk about these deduction matters, they are just talking on paper. Let's talk about the model, that is, the sand table. This must be done again, and it must be done according to what I said."

Zhu Qi looked at the quartermaster next to him, who hurriedly cupped his fists and said:
"But according to His Highness King Liao's order."

Zhu Qi nodded, then asked for a pen and paper, and wrote while talking:
"First, I need you to follow a certain scale. Suppose this lake is actually four miles wide, and the sand table is marked with five inches. Then the other lake is ten miles wide, and the sand table must be one foot long. This is called waiting. Proportion, as it is with lakes, is also true with roads.

Second, I want you to divide the sand table into square grids. The length and width of each grid must represent one mile. This is called grid division. The road with three grids is three miles long, and the lake with five grids is five miles wide.

Third, I read in the brochure that there are three peaks in Zijin Mountain, but only one peak is marked on your sand table. The height of the mountain has to be marked out. The data is not written in the brochure, only the width of the mountain is written. Did you miss it? "

When Zhu Qi asked this question, those quartermasters and soldiers were dumbfounded, and the quartermaster said in a daze:

"Your Highness, I have never measured the height of Zijin Mountain before, and there are three peaks to be measured. If we do it temporarily, it will take ten days and half a month. I'm afraid we won't be able to measure it. We will do it tomorrow It's too late to talk about martial arts."

Zhu Qi laughed when he heard this:

"It's just to measure the height of the mountain. You still need ten days and half a month? Is there a pole in the barracks?"

The quartermaster hurriedly nodded, Zhu Qi waved his hand and said:

"Go, take two three-foot-long poles, and before the sun sets, I will take you to measure the height of Zijin Mountain!"

A group of people waited and looked at each other, can two poles measure the height of a mountain?How to measure it?

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(End of this chapter)