(Thanks for the support...) Tomorrow I will show the words of the recommended fifty... Continue with three more... Someone misunderstood, in fact, the reward was rewarded by myself, and I wanted to rush to the ranking... Hee-hee...! ）

Li Shimin had murderous intentions towards Tuguhun, so he had to use troops, and if he wanted to use troops, Ma Zheng in the Tang Dynasty was an unavoidable topic.

Because Datang's Ma Zheng is more strange.

Datang has no shortage of horses... Because there is a tribe that has been supplying horses to Datang, but this tribe sells horses with silk, and the cost of horses is too high, although Datang is rich, but he can't afford it.

As we all know, war is the most costly of horses, and the loss of horses is astronomical after a war is fought.

Li Shimin wanted to fight Tuyuhun, but Li Shimin was the Holy Lord, he couldn't just think about his own preferences, but also for the sake of the people, just after he said his idea of preparing to attack Tuyuhun in the court.

The generals agreed one by one.

Cheng Yanjin, Li Jing, Wei Chigong... and many other famous generals all rushed to participate in the battle.

It's just that the generals raised their hands in agreement, but Wenchen all objected, Fang Xuanling, Wei Zheng... Wenchen, led by these people, analyzed the unfavorable factors of the Tang Dynasty at this time.

At this time, it has only been nine years of Zhenguan, and if there is too much loss, it will affect the national fortune of Datang, the most prominent of which is the loss of horses, which will make Datang's economy fall into a swamp and cannot extricate itself.

If Li Shimin is a faint monarch, it will be fine, but Li Shimin is a British lord, so he can't ignore the questions raised by Wenchen.

The so-called thinking day and night, Li Shimin wanted to solve the problem of Ma Zheng very much, and later asked his sons about Ma Zheng.

It's just a pity that the problem of Ma Zheng can't be solved by the civil and military forces of the Manchu Dynasty, not to mention a few teenagers who have not yet reached adulthood, Li Shimin is also helpless, and he has a breath in his heart, in order to get out of his anger, Li Chengqian has become a punching bag, in fact, Li Chengqian is still very unlucky.

Looking at the poor and helpless Li Chengqian in front of him, Li Zhan wanted to help the other party, and he didn't know what was wrong, with this Tang prince, Li Zhan always had a feeling that blood was thicker than water, this feeling was stronger than the feeling of being with his own brother and sister, and it was very strange.

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"Don't be wronged."

Li Zhan smiled and said to Li Chengqian: "Big brother taught you a method, after you go back, you will tell your father this method, and your father will definitely praise you." ”

"How is this possible, big brother... Don't you know, my father is very eccentric, he only likes the third and fourth, and I, the eldest son, is his shame. ”

With a slight smile, Li Zhan said: "Don't worry, others will lie to you, I won't lie to you, I won't write the horse policy theory, but I can know that your father asked you to write the horse policy theory, it should be aimed at the imperial court war horse loss too much, I want you to think of a way for the country."

Although my method is not very literate, because your eldest brother and I have never gone to school, if your family offers it, it should be rewarded by the court. ”

"Big brother... How does it work? Li Chengqian finally became interested.

Li Zhan took out a piece of paper and said with a smile: "You wait...!" ”

Then, Li Zhan drew stirrups, saddles and horseshoes on paper vividly.

It should be noted here that stirrups, saddles and horseshoes have actually appeared very early, and there is a "nail horseshoe map" in the murals of the Mogao Grottoes in Dunhuang, China, on the wall of Cave 302 built in the 4th year of Emperor Kaihuang of Sui Dynasty (584 AD).

From the picture, a horse stands, tied to a tree, a person stands behind it, holding the horse's right hind limb, so that the hoof flips upward, and the hoof is painted with an oval hoof, as if the palm is about to be released. This is enough to prove that horseshoes appeared before the Sui Dynasty.

However, the emergence of ancient times is not equal to popularization, because in ancient times, the spread of this kind of news was very closed, and many people would not be able to move more than a hundred miles in a lifetime, so things that were too far away could not be transmitted.

From the Qin and Han dynasties to the Tang and Song dynasties, no horseshoe has ever been found in the Central Plains. It is only in the relatively remote northeastern region that it is found, and it is not too late.

Archaeologists have found physical materials from the Goguryeo period in the three northeastern provinces that are clearly the shoes of the 3rd-6th centuries AD. It was discovered in the famous tomb of King Haotae of Goguryeo, and the tomb is dated to 414 AD.

The purpose of saying this is to tell everyone that appearance does not mean popularization, as long as there is no popularization, Li Zhan can dedicate it.

"Big brother... What are these? Looking at the three strange things painted by Li Zhan, Li Chengqian asked with some surprise.

"One of these three is an item that can reduce the wear and tear of the horse, and the other two are items that increase the power of the cavalry... Godbrother, don't worry, the eldest brother will tell you one by one. ”

After speaking, Li Zhan pointed to the horseshoe and said: "This U-shaped item is made of iron, called a horseshoe.

As you and I know, a horse's hooves are made up of two layers, the one that comes into contact with the ground is a layer of hard keratin about 2-3 cm thick, and the upper layer is a living keratin. When the horse's hooves come into contact with the ground, they will fall off quickly due to the friction of the ground and the corrosion of stagnant water.

But when we nail this horseshoe to a horse, it is equivalent to putting an iron shoe on the horse.

It not only protects the horse's hooves, but also makes the horse's hooves grip the ground more firmly, which is beneficial for both riding and driving.

I calculated, this can reduce the loss of Datang's war horses by eighty, if the current Datang has a million war horses, then the horseshoe can increase Datang's war horses several times... Brother... This is definitely a once-in-a-lifetime achievement. ”

"Big... Big... Eldest brother... You... You... This is what you came up with? Li Chengqian looked at Li Zhan in front of him dumbfounded, and he was almost stunned by shock.

However, Li Zhan shook his head with a smile and said, "No... It's not something I came up with, it's you... Chen Qian came up with it, remember... Out of this door, the horseshoe is your thing, and it has nothing to do with me, nothing to do with it. ”

"It's... Eldest brother... You... How can you be so good to me, you know, if you give this horseshoe, you will at least get a knighthood. Li Chengqian looked at Li Zhan in front of him with some incredulity, he wanted to know why Li Zhan was so good to himself, Li Chengqian couldn't guess at all, Li Chengqian at this time even thought that Li Zhan had any bad intentions for him, because it was too unreal.

Li Zhan can actually see Li Chengqian's surprise, indeed this will really be very alarming, who would be so good to a person who has only met twice? So Li Zhan looked at Li Chengqian very calmly and said: "I don't care what you think, I just want to tell you that your eldest brother didn't call in vain, I already treat you as my younger brother, so I will try my best to help you."

If you think I'm trying to do anything... You can leave! ”

Without hesitating for a few seconds, Li Chengqian nodded firmly and said, "Big brother... I'm sorry...! Following Li Chengqian's eyes, he said sincerely: "I believe that the eldest brother... Big brother won't lie to me, big brother will always be good to me. ”

This sentence seems to be said to Li Zhan, and it seems to be said to himself.

Obviously, he was still puzzled just now, but now because of a sentence that changed his doubts, Li Chengqian also had a strange sense of trust and dependence on Li Zhan.

Li Zhan laughed: "Okay... I'll go on and tell you about the combination of saddle and stirrup, and they're your idea, and when you get home, find a blacksmith to build it in secret.

Follow you to find a good opportunity to give these three harnesses to your father, and I am sure that your father will praise you. ”

"Hmm... Eldest brother... I listen to you...! Li Chengqian nodded happily.

Li Zhan laughed.

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