Lu Zheng's true attitude made Zhao Bing "inspire" this childhood companion, of course, it also means cultivation. You should know that although Lu Xiufu was a Duke and was in charge of the position of prime minister, he would eventually retire and die one day. He had many descendants, and only nine sons, but the only one who could inherit the title was the eldest son. The other sons would go their separate ways after giving birth.

Therefore, these high-ranking families also have crises. Of course, the most effective way is to try to make other children gain fame and enter the career of officialdom. Not only can brothers help each other, but the family can also last forever. This time, Lu Xiufu let Lu Zheng, who had an old friend with Zhao Bing, accompany him, and there was also the idea of ​​thinking about his future.

Of course, Zhao Bing would not use everyone. In addition to consolidating his status, he also used them to suppress traditional families to promote his own innovation. But he did not want to do the front door to go to the tiger and the back door to the wolf, allowing them to grow up, so that the children of the middle school disciples in the court were spread throughout the officialdom, thus forming a new interest group. Lu Zheng's current performance still satisfies him, so he would not hesitate to give some advice.

As the saying goes, "If an army has no baggage, it will be destroyed; if there is no food, it will be destroyed; if there is no accumulation, it will be destroyed." In the military arts work in the pre-Qin period, "Wei Liaozi", the real marching speed of that era was recorded, and infantry traveled only 30 or 40 miles a day. However, Zhao Bing also realized through practice that although military technology and road conditions have been continuously developed over thousands of years, except for the modern mechanical forces, there has not been a great progress for infantry and cavalry after thousands of years.

Therefore, from the Qin and Han Dynasties to the Ming and Qing Dynasties, the marching speed mentioned in "Yu Liaozi" was also a common speed in ancient army, and the loss problem of emergency marching was not well solved. In modern horse endurance races, the best horses without loads can maintain a speed of nearly twenty kilometers per hour during a running of nearly one day. At the end of the day, when a large number of horses fell behind, some horses could also run more than one hundred kilometers.

In the book "Inner Mongolia Cavalry during the Liberation War", it is recorded that the cavalry of about 400 people from the PLA rushed to 200 kilometers, which took four days. In the end, only 40 cavalry arrived and maintained a good state. All the remaining cavalry fell behind. This shows that in modern troops whose discipline and organization are far beyond the old days, it is still so difficult for cavalry to raid and combat, with a loss rate of nearly 90%.

Therefore, in ancient times, the use of this lightweight and simple pursuit tactic would only make the loss of knights and horses even more astonishing, and it required careful consideration by ancient generals. Moreover, "The Art of War" written in the Spring and Autumn Period and the Warring States Period emphasized: "Walking twice the way and competing for profit for a hundred miles, you will capture the three generals. The strong ones first and the tired ones later, and the eleventh method will come."

Double the way means to march at double speed and travel with both speed. In other words, if a forceful marching of 100 miles a day, only soldiers with good physical strength can keep up, and those with poor physical strength can only fall behind. High-intensity marching will only cause a large number of soldiers to fall behind. Under various constraints, the "regular marching" of ancient troops was only about thirty to forty miles, and marching of more than 100 miles a day was almost discarded materials and could reach the limit of marching speed after light and simple travel.

Zhao Bing also understood that if he dared to face the current situation, if he dared to face a large number of cavalry falling behind, the arrival of the cavalry and horses were unable to sprint, and the number of horses was disabled and reimbursed afterwards, and could no longer act as war horses and other losses, the light cavalry of the Song army could also be able to rush to attack at such a speed, but the corresponding price he paid was quite tragic.

In cavalry combat, the endurance of the horse is very limited. It relies on the impact of the horse when running. Whether it can continue to fight when both people and horses are exhausted is difficult to resolve. Therefore, when the price paid and the unpredictable results are difficult to determine, even if the famous general dare not use it easily, he is more betting.

Therefore, avoiding post-marching combat was the top priority of the ancient army. Even the "Shatuo Yaer Army", the most powerful army in the late Tang and Five Dynasties, which was famous for its excellent endurance, was also unavoidable. Li Cunxu, the highest commander of the Yaer Army, attached great importance to this.

Of course, there are exceptions. If there are certain special circumstances, the army that is lightly mounted may also travel a hundred miles a day. Zhao Bing knew that in history, such as the Qiuluan tribes in the Jiajing period, the marching speed of one day and one fifty miles was not uncommon, but there were not many people who could maintain combat effectiveness like the Qiuluan army after a marching speed...

"As Your Majesty said, "The Three Kingdoms Biography of Zhuge Liang" records the situation of Cao Cao's urgent marching and pursuing Liu Bei in Dangyang: Cao Cao's people came from afar and were tired from being tired. He heard that he was chasing Yuzhou, and the light cavalry traveled more than 300 miles a day and a night. This is the so-called "at the end of the strong crossbow, the power cannot penetrate Lu's white hair". Therefore, the military strategy is taboo, saying, "It must fall down the general." Zhang Yide blocked Cao's army alone on Changban slope not because of his courage, but because of his exhaustion, the Cao army cannot fight!" After hearing the emperor's story, Lu Zheng said thoughtfully.

"That's true. During this pursuit battle, Cao Cao's light cavalry marched 300 miles a day and a night. In fact, behind Cao Cao's army's ability to achieve such a marching speed is most likely a light cavalry with a abandoned baggage and a man and more horses. Even for light cavalry, the military equipment must be equipped with basic armor, bows, arrows, weapons, etc. In addition, the knights themselves are a great burden for the horses, and the army will find it difficult to support subsequent operations!" Zhao Bing was very satisfied with Lu Zheng's ability to learn from it and explained.

"So during the long-distance attack, Cao's army had to abandon supplies and supplies on the one hand, and on the other hand, it was also scarce. It was the so-called end of the strong crossbow and could not penetrate Lu silk. Zhuge Kongming's comment was not to belittle the Cao army. According to official historical records, Zhang Yide dared to stop Cao's army at Changbanqiao with only twenty cavalry. No enemy dared to get close to him, perhaps it was not excessively exaggerated."

"Besides, after a long journey, the Cao army, who was already extremely difficult to move, had almost certainly reduced its combat effectiveness after a high-intensity march. Although Zhang Yide, who had only a few dozen knights around him, had no choice but to occupy the advantageous terrain to intercept him, he was waiting for his work and was full of energy. Although the Cao army was numerous, he was afraid of a battle. Facing the blocking of unknown powerful enemies, he could only patrol and stop. That was not surprising."

"Your Majesty's analysis is that this is the truth!" Lu Zheng nodded. Although he was a little disappointed, what the emperor said was reasonable, which was more objective and credible than those classmates who discussed soldiers. Think about it and said, "Students heard that the Mongolian Yuan cavalry often fought and attacked thousands of miles, suddenly appeared in the hinterland of the other party, and could still fight. In addition to the bravery and tenacity of the Tartars, they all said that Mongolian horses could withstand hunger and thirst, and could feed on grass roots and bark, without consuming food, and were also good at running long distances. If our army all used Mongolian horses as their cavalry, could they also attack thousands of miles?"

"Mongolian horses can be war horses, but they are not as magical as they are said. Some of them have rumors spread by rumors. Some of them deliberately spread them and exaggerated them to intimidate the enemy. They should not be believed in them all." This rumor is actually very wide. In modern times, people still believe them, of course, including Zhao Bing. However, after this era, he realized that hearing is false and seeing is true.

"According to what I know, our army found that its speed was not high after equipped with a large number of Mongolian horses, and its endurance was not as good as that of Western Regions horses, and even had no great advantage in health. As for Mongolian horses, they would find food by themselves, which is not exclusive. Many horses would also find food by themselves. This is a common ability for grazing horses and is not particularly outstanding. Moreover, they have to be fed during the long-term running of horses, and Mongolian horses are no exception!"

"That's right, why can the Mongol cavalry go in thousands of miles and detours thousands of miles? Is it a rumor?" Lu Zheng asked in confusion.

"Of course not!" Zhao Bing shook his head and said, "The Mongols are good at horse herding, so they have a great advantage in the number of horses. They can choose the best in multiple ways, and ride more than one person, which makes up for the shortcomings with the advantage of numbers. In addition, in order to supplement the losses of fighting horses outside, they actually go all the way. As long as the horse is good, no matter which kind of horse is required, so that they can change horses frequently and maintain horsepower so that they can still have the strength to marches for a long distance!"

This is not Zhao Binghu. During the war with the Mongolian Yuan, they seized a large number of war horses, including Mongolian horses, as well as excellent horse breeds such as Central Asia and West Asia. Even after splitting into the four major khanates, the Il Khanate in Central Asia often plundered Arab horses and even sent Arab horses to the Yuan court. During the exchanges between major khanates in Mongolia, the Chagatai Khanate was able to obtain silk from the fiefdoms in Shanxi. The Il Khanate also retained a large amount of pasture assets for the Kublai Khanate, and the flow of horses was reasonable.

"Mongolian horses do not pick feed, but they do not never eat grain feed. When the Mongolians entered the farming areas of the Central Plains, they would also collect grain on a large scale, and even sent some old and weak troops to farm during the siege to ensure the supply of war horses. After occupying the Central Plains, the Great Khan of the Mongolian Yuan also issued an order to Dadu Road, Daxing, Wanping, Liangxiang, Yongqing, Baodi, Changping, Zhuo, Ba, Tong, Ji, Qiang, Shun, Tan, Dong'an, Gu'an, and Longqing. They collected more than 100,000 stones of grain as feed every year. They also required farmers to provide grass, corn and salt to horses in the Mobei Horse Farm, and set up a special alfalfa garden to provide alfalfa for Mongolian horses on the grassland!" Zhao Bing said.

"This... this does not matter. That is, how could the Mongol Yuan cavalry traverse all directions and destroy countless countries?" The inherent concept was broken, making it even more difficult for Lu Zheng to accept that the Song Dynasty was so vulnerable.
Chapter completed!