Zhu Yunwen still went to listen to Liu Sanwu's lectures every morning for the next few days, meditated at noon, and generally soaked in Zhan Shifu in the afternoon to supervise the progress of wargame deduction. Zhu Yunwen tested it slightly, Tan Bo's mental arithmetic is very fast, and he is very sensitive to numbers, so he uses it when he is satisfied. I also made a suggestion to make a few wooden boards, paint them with ink, and then make chalk out of lime, write on the blackboard, record and calculate, and everyone tried it and felt that it was very convenient, so they used it.

Zhu Yunwen took a look, and estimated that everything could be done today, so he asked the others to be busy first, and ran to the Qianqing Palace to find Zhu Yuanzhang, Zhu Yuanzhang has not been in good health recently and is taking a nap. Yun Wei waited for a while, and Zhu Yuanzhang woke up. The eunuch reported it and asked Zhu Yunwen to go in.

"Grandpa Huang, the preliminary preparations for the wargame deduction are almost complete, I plan to choose a topic for the deduction, what does the imperial grandfather think is good?"

Zhu Yuanzhang smiled and said: "Yun Wei, I have already thought about this topic, I have used troops in my life, and I am invincible, only Hongwu lost the decisive battle in Lingbei in the fifth year, and I have always thought that I regret it in my life, so you can deduce this." ”

Zhu Yunwen rolled his eyes and said, "Grandpa Huang, this is okay, but I want to refer to the historical materials of the Yuan Dynasty." ”

"Historical materials of the Yuan Dynasty? Hehe, okay, I'll see what you can deduce, I'll have to check it when the time comes. ”

"Okay, no problem. Grandpa, I'm leaving. ”

"I'm in such a hurry, I don't talk to Grandpa Huang."

Yun Wei took Zhu Yuanzhang's hand and said, "Grandpa Huang, Yun Wei still has to go to Zhan Shifu to discuss with Qi De and them, the time given by Grandpa Huang is so tight, I hurry up." ”

Zhu Yuanzhang smiled and said, "Okay, you go, don't be too tired, pay more attention to your body." ”

"Order! Grandpa Huang, Yun Wei is gone. ”

Looking at Yun Wei's back, Zhu Yuanzhang couldn't help but smile with relief.

Zhu Yunwen rushed to Zhan Shifu, went to the war room to gather everyone, and announced the matter, everyone was very happy, but because they had never done it, they were a little embarrassed.

Zhu Yunwen looked at everyone's faces, smiled and said, "It's okay, everyone does their best to deduce, and I am responsible for any problems." But I have an idea, which may not be very mature, so let's put it forward. ”

Everyone was overjoyed, and they were worried that they couldn't start, so they said nonsense: "Your Highness, you're welcome, let's talk about it." ”

"Okay, I suggest doing this, first determine a principle, everyone should discuss the issue calmly, don't deliberately attack personally, this involves the King of Zhongshan, please don't think too much about it."

"Don't dare, Hui Zu must concentrate on deduction and live up to His Highness's expectations." Xu Huizu hurriedly arched his hand and said.

"Next, I have to read the historical materials of the Yuan Dynasty and this dynasty to understand the situation of Lingbei and the Western Regions at that time. The final result was a crushing defeat for the Central Route Army, the Eastern Route Army for considerable kills and plunder, and the Western Route Army for a great victory, but the acquired territory was later abandoned. ”

"We first have to review the expedition of the Third Route Army, and then see what is the reason for the failure? Can you adjust to avoid failure? There is also whether the route of the expedition can be optimized, whether the three route armies can be merged into two routes, or even one road, and what are the advantages and disadvantages of each, we must analyze them one by one. ”

"And the army of the Northern Yuan is not static, who are the generals, whether there is a unified command, how many troops they have, and they are fighting in the hinterland, how many troops can be recruited, etc., you need to understand the forces of the Northern Yuan. I suggest that Geng Xuan and Wu Sheng be our army, Wei Guogong is responsible for guiding, Guo Jian and Song Xuan are in charge of the Yuan army, and the founding duke is responsible for guiding. Director Qi and Master Huang mainly consulted the library files, analyzed the actual situation of the Northern Yuan Dynasty at that time, and gave an overview of our army's strategic objectives and pre-war situation, as well as evaluated the results of the deduction. Tan Bo was responsible for measuring the weight of grain and grass, the speed of marching, and the losses and consumption in battle. Time is pressing, everyone has to work harder, tomorrow Qi De and Master Huang will explain in front of the station, everyone pay attention to the lecture. After that, I will make a detailed deduction plan, and I will make the decision and supervise the implementation, do you have any opinions? ”

"No, we're going to do our best."

After Zhu Yunwen finished speaking, everyone couldn't help but stand up, because everyone found that the imperial grandson was really talented, a complex problem was explained clearly by him in a few words, and things were arranged in an orderly manner, and in the end, the wargame deduction was invented by him, but it did not interfere too much with everyone's affairs. So everyone is very comfortable, very engaged, and feels very motivated.

Zhu Yunwen also studied with them and went back very late. At night, I recalled some historical materials of the decisive battle of Lingbei that I learned in my dream, and I felt that I had some ideas, and I slowly fell asleep.

The next morning, Zhu Yunwen arrived at the Zhan Mansion early, and found that all the people were there, and there was already a bookshelf in the house, and the books were slowed down on it, Yunwen picked it up and looked at it, all of them were some historical materials of the Yuan Dynasty and some records of the military department of this dynasty, all of which were from various departments, if it weren't for the face of his imperial grandson, it would definitely not be so fast. Qi Tai and Huang Zicheng's eyes were red, and they were frantically flipping through the classics, and then they found something, so they asked Tan Bo to record it, Tan Bo had already recorded a large book. Xu Huizu, Chang Sheng, Geng Xuan, Song Xuan, Guo Key, and Wu Sheng gathered together and pointed on the sand table, on which a bunch of large and small flags and war games were placed. Zhu Yunwen felt that the smell in the room was not quite right, and asked, "Didn't you rest last night?" ”

"Yes, the time is too tight, we all stayed here last night, and we didn't go to bed until dawn, and after sleeping for a while, we got up quickly, and it is estimated that His Highness is coming."

Zhu Yunwen was a little reluctant: "Everyone has worked hard, and when this matter is over, I will give everyone two days off." ”

"Your Highness!"

"Everyone, can you come here and see the results?"

Everyone gathered around a large table in the center of the room, on the table was a map of the Ming Dynasty's northern Xinjiang, Zhu Yunwen glanced at it, and felt as awkward as ever, the accuracy of these maps was too poor, but there was no way, in this era, except for the compass and the position of the sun and stars, there was no good way to set the direction, and the survey technology was also very primitive.

As always, it was Zid who was the main speaker, and he cleared his throat and began to explain.

"Back to Your Highness, after the research and analysis of the ministers and you last night, the situation in the five years of Hongwu is roughly as follows:"

"First, the forces of the Northern and Southern Yuan forces south of the Great Wall are basically wiped out, and only Gansu has some enemy troops."

"Second, expand Timur's flight north to Helin. The main force of the Yuan army was mainly in Mobei. The territory of the Mengyuan Dynasty had actually been reduced to the north of the Great Wall, Gansu, and Liaodong. Most of the Yuan army was near Mobei and Lin. ”

"Third, although Hongwu has dealt a heavy blow for three years, the Yuan army began to harass our army's border in the fifth year of Hongwu."

"The main location of this operation is in Lingbei Province of the Northern Yuan Dynasty, Lingbei is the meaning north of Hangailing, Hangailing is Hangai Mountain, and it is also what we often call Yanran Mountain, so this decisive battle is similar to the decisive battle of Mobei when Emperor Wu of the Han Dynasty, and the army that attacked Mobei is also 100,000 people, and the main general is also a temporary choice. Emperor Wu of the Han Dynasty's goal was to completely eliminate the Xiongnu, although it was not completely achieved, but since then, the Xiongnu have a comprehensive fear of the Han army, and there has been no major war in Biansai since then. My goal at that time was also to clear Mongolia, and the final decisive battle site can also be seen that the Northern Yuan Dynasty reached the last moment, Lingbei was already the westernmost part of the Northern Yuan Lingbei Province, and further west was the border of the Kipchak Khanate, since the Yuan ancestor Kublai Khan, the Yuan Dynasty's actual control range was only to Lingbei Province, and the King of Zhongshan was defeated in this place. A month later, the king of Qiyang also withdrew his troops near this place. Therefore, this northern expedition actually forced the Yuan soldiers into a corner, but unfortunately our army was defeated. ”

"The main goal of this northern expedition was to clear the Mongols, and the army was divided into three routes, the middle road was Xu Da, the king of Zhongshan, the east road was Qiyang Li Wenzhong, and the west road was Feng Sheng, the prince of Song. The middle road is the main force, with 50,000 troops, out of Yanmen Pass, slowing down the supply and forest, and attracting the main force of the Northern Yuan Dynasty to fight a decisive battle; The east road was a strange soldier, with a strength of 50,000, out of Yongguan, and under the cover of the middle route army, the Northern Yuan Khan court was eliminated; In order to support, the Western Route Army eliminated the Yuan army in Gansu, which not only prevented its northern aid from expanding Timur, but also played a role in confusing the Northern Yuan's judgment on the direction of our army's attack. ”

"The expected goal of the Western Route Army was only half accomplished, although it drove out the Yuan army in Gansu, but it did not play a role in confusing the Yuan army, but because it was on the verge of the Uighur army, it withdrew, gave up the land it occupied, and retreated to Liangzhou."

"The Middle Route Army did not go out of Yanmen in February, defeated the expansion of Timur in the Yema River, and in March Ding Mao defeated the expansion of Timur in the Tura River, it can be seen from the map that the Tura River is in the northeast of Helin, the distance is very close, and the expansion of Timur fled to Lingbei, and his subordinate He Zongzhe convergence. In May, the middle route army of Renzi advanced to Lingbei, was defeated, suffered heavy losses, and the king of Zhongshan had to retreat to the side of the insurance. ”

At the end of June, the Eastern Route Army arrived at Kouwen, when the Central Route Army had been defeated, and passed through Hara Mang to the Yuqu River (Yema River), and fought fiercely for several days at the Tura River, the Aruhun River and the Yuan general Barbarian Harazhang, repelling the reinforcements. The East Route Army chased to the sea of China, said that the sea was here, crossed the Hangai Ridge, and the place where the King of Zhongshan was defeated was not far away, the Yuan army had just defeated the King of Zhongshan, and there was no way to retreat, the morale was strong, the King of Qiyang used the suspicious soldiers to frighten the Yuan army, and the way back was almost lost. ”

"That's about it." Zid made an epilogue.

Zhu Yunwen glanced at everyone, and felt that everyone's faces were not very good, especially Wei Guogong, who thought about it and comforted Wei Guogong: "Wei Guogong, we are not here to blame anyone's problem for failure, it is all in the past, we just simulate and deduce it to see if there is any improvement, so as to lay a good foundation for us to send troops to the desert in the future." Wei Guogong, when you send troops to Mobei again, will you be able to wash away the shame of your father in the place where he fought? ”

Xu Huizu's eyes were red, and he knelt on the ground: "If you send troops to Mobei again, please give the last general a chance." ”

Zhu Yunwen picked up Xu Huizu and said: "Don't be like this, Lone is the same as you, it's all for Daming." Let me start by throwing a few words and briefly commenting on my views. ”

"Since the rebellion of Yuan Shizu as emperor and Haidu, the four khanates have actually separated from the Yuan Dynasty, and the territory under their control is only China mainland and the desert north of the desert, and outside the Jiayuguan in Gansu is the Chagatai Khanate and the Ogedai Khanate, and the Later Wogedai Khanate is controlled by the Chagatai Khanate, so the main thing outside Gansu is the Chagatai Khanate. The Chagatai Khanate was a feudal state of Genghis Khan's second son, Chagatai, in Samarkand, and was the capital of Khorezm in the past. However, it was later divided into East Chagatai and West Chagatai, with the capital of West Chagatai being Samarkand, and the capital of East Chagatai being in Yili, and the two countries fought for years to compete for the orthodox position. The West Chagatai is located in the area of the river, which is not depicted on this map. Zhu Yunwen pointed to the west side of the map.

"The land in the Transoxiana region was fertile and much stronger than Gansu, so the Eastern Chagatai Khanate had little interest in Gansu, and its main purpose was to go west and conquer the Western Chagatai Khanate. Therefore, there will be no problem for our DPRK to occupy Gansu at that time. It's just that we don't know the situation in Eastern Chagatai, and the Hexi Corridor has been Hu, and Islam is popular, so it doesn't look like China. Due to the above reasons, Song Guogong gave up most of Gansu. Our dynasty did not establish the Gansu Political Envoy Department on the basis of Gansu Province, but merged it into the Shaanxi Xingdu Division, because it was believed to be related to the failure of the decisive battle in Lingbei. ”

"So in the decisive battle between Lingbei and the Northern Yuan, it can be known that the Northern Yuan actually has no way out, which can be seen from the Liangguo Gong's fishing victory in the sea, the Northern Yuan is unwilling to seek assistance from the west, and the Northern Yuan is right, because after the victory of the fishing Erhai, the Yuan lord Tugusi Timur and his son Tianbaonu were killed by Ali Buge's descendants on the way to escape. So if the Yuan army retreated to the west, it would definitely be rejected, and even meet with swords. ”

"Judging from my Northern Expedition and Hongwu's three-year Northern Expedition, the Yuan army was not an opponent at all in the offensive and defensive battles of the fixed city. However, in the northern expedition in the third year of Hongwu, the farthest was the king of Qiyang to reach Yingchang, which was only more than 400 miles away from Juyongguan. But unlike Helin, it is about 2,500 miles from Yanmen Pass to Helin, which is still a straight-line distance. Therefore, this Northern Expedition is fundamentally different from the previous ones, it is to break away from the support of the Great Wall, go deep into the desert, and conduct mobile operations with the Yuan army. Judging from the later battles, it is also true, the Yuan army retreated step by step, lengthened the supply lines of our army, fatigued our army, and finally began a decisive battle. ”

Judging from the performance of the Yuan army, it can be seen that the Yuan army, after many failures, has given up the glory of the Great Yuan and has transformed into a standard nomad, not caring about the gains and losses of one city and one pool, and completely mobile combat. If the Yuan army defended in Horin, then it was bound to perish, and they chose the most correct strategy, so they won. At this point, they were stronger than the Huns, and when Wei Qing reached Mobei, the Huns were waiting for work at ease and fought a decisive battle with Wei Qing, so they failed. ”

"In addition, it can be seen from the marching process of the Middle Route Army that from Yanmen Pass to Yema River to Tura River, about 2,200 miles, it took 22 days, including battles, 100 miles a day, of course, this is the speed of the forward, Liang Guogong is indeed brave and invincible. After that, Liang Guogong waited for the king of Zhongshan to meet, and arrived in Lingbei after 46 days. It is more than 1,100 miles from the Tula River to Lingbei. Therefore, the main force of the Middle Route Army took 68 days and traveled more than 3,300 miles, which is still a straight-line distance, and it marched nearly 50 kilometers per day. The long time, the long march, and the excessively smooth advance may cause our army's psychological laxity and a decline in combat effectiveness, coupled with the Yuan army's mourning momentum that cannot be retreated, it is estimated that it has a certain relationship with the final defeat. ”

"The itinerary of the Eastern Route Army was similar, but it did not form an effective cooperation with the Central Route Army, and the two attack goals were the same, but the Middle Route Army only arrived near Helin more than two months after the defeat, and in the face of the Yuan Army, which was in full swing and repaired, it was unable to win and had to withdraw."

"At present, these are lonely thoughts, and the specific deduction has to be done by you, and there are three goals for lonely consideration:"

"First, if you don't send the Western Route Army to attack, but send it in other directions, what will change?"

"Second, if the Central Route Army is strengthened, or even the Eastern Route Army and the Middle Route Army are merged, what will change?"

"Third, if this northern expedition is postponed, after solving the Gansu Yuan army and relieving the worries, would it be better to go north again?"

"Do you have anything to add?"

Everyone was a little shocked, a 17-year-old young man talked eloquently about the war situation in Northern Xinjiang and the relationship between the major khanates, and the discussion was meticulous, almost everything, although it could not be without flaws, but for a 17-year-old young man, it was not easy.

Qi De stood up and said: "Your Highness spoke very well, it can be seen that Your Highness has also put a lot of effort into it, and has given us a lot of inspiration, our current information is a little scattered, Your Highness has already strung it together, and the rest of the things are relatively simple, we can continue to deduce." ”

Xu Huizu also said: "Your Highness, it really amazes the last general, and His Highness is wise." ”

......

Everyone continued to discuss and began to deduce according to Zhu Yunwen's ideas.