Yu Xuan, the Ministry of Works, sat in his room, took a sip of hot tea, moved his body, this day, not bad, the recent palaces are almost completed on schedule, the Ministry of Industry has nothing to do, this Ministry of Industry is also idle, after the next duty, you can go to Pingkangfang .......

"Yu Shangshu, His Royal Highness the Prince!"

One of his subordinates hurriedly ran into the house, and when he heard it, he opened his half-squinted eyes: "Who's coming?" ”

"His Royal Highness the Crown Prince!"

"Just say I'm not there!"

After Yu Yan finished speaking, he quickly drilled towards the backyard of the Ministry of Industry, there must be nothing good for the prince to come, when he first came to the Ministry of Industry, he took away ten carpenters such as Zhu Youxiao, and later took away ten blacksmiths such as Ou Zhizi, and now the Ministry of Industry is short of carpenters and blacksmiths, if he is taking some people away, there will really be no one in his own Ministry of Industry!

"Yu Shangshu, long time no see!"

Before Yu Yan could come to the backyard, Yu Zhiqian's voice had already come, and after Yu Yan heard it, he could only stop, instantly changed his face, and turned his head to look at Yu Zhiqian: "His Royal Highness the Prince!" ”

"Well, Yu Shangshu is exempt, is my horseshoe ready?"

"It's done, I'm just going to send it to the East Palace!"

"In that case, take me to see it!"

Soon, Yu Yan asked people to take the horseshoe that Yu Zhiqian asked for and sent it over, all of which were U-shaped, but with different thicknesses and different holes, which could be fixed on the horse's horn by nailing.

"Let's go, let's try it, is it useful to put it on a horse!"

"Good!" Soon, several horses were dragged out of the stables of the Ministry of Industry, all of which were old horses, who could run errands in the Ministry of Industry, could not go to the battlefield, and could not pull the car, and belonged to the horses that retired for the elderly.

"No, these horses are too!"

Yu Zhiqian glanced at it and shook his head, although Yu Zhiqian himself had not nailed Ma Tie, but he had seen it, such a long nail was to be nailed into the, this horse's hooves were so thin......

"Is there a better warhorse?"

"Nope!"

"Forget it, I'll take it back to the East Palace, by the way, a few of you horsefarer workers will come with me, just give it a try!"

When Yu Yan heard this, the corners of his mouth twitched slightly, but he did not refuse Yu Zhiqian's proposal, and soon, several blacksmiths were taken out and followed behind Yu Zhiqian, leaving with tears in their eyes.

"Brother Liu, take care!"

"Brother Song, take care!"

"Brother Li, take care!"

These blacksmiths nodded vigorously, took a deep breath, and shook hands vigorously with their friends in the Ministry of Works, not like going to the Prince's Mansion, as if they were parting with life and death.

"Hey! Lao Liu, they are going to suffer! ”

A small official of the Ministry of Works looked at the blacksmiths who were leaving, and slowly spoke.

"Isn't it, Zhu Youxiao, what a good person, I went to the East Palace for less than a month, the whole person lost weight twice, and I don't have much money, I heard that I work day and night in the East Palace, just that mahjong, how many pairs do you have to make every day, and if you can't do it, you won't be given food!"

"Really? His Royal Highness the Crown Prince will not! ”

"How can this be fake? I heard that Zhu Youxiao's neighbor's brother-in-law said it himself, and you will know when you see Zhu Youxiao in the future! ”

"It's terrible, but I'm not a craftsman, otherwise, hey......"

A group of people were talking behind their backs, and a small official packed up the drawings in his hand, left the Ministry of Works slowly, and rushed towards the mansion of the second prince.

It is said that the second prince, that is, Yu Tai, first ate honey at the last big sacrifice, and was bitten by various insects at night to become Marshal Tianpeng, and later learned Yu Zhiqian to play with horseshoe, but was kicked and fainted.

But it's not a big deal, according to Yu Zhiqian's estimation, it is a concussion, the only thing that worries Yu Zhiqian is whether this thing will have a soul cross over after falling like himself, or get a system, but according to the current situation, it seems that there is none.

After the second prince woke up, he was silent for a while, and then asked his eldest brother what he was doing, and when he learned that his eldest brother asked the people from the Ministry of Industry to study the horseshoe, Yu Tai decided that he must get it out first, and where he fell, he had to get up!

So Yu Tai bought off a small official in the Ministry of Industry to report his eldest brother's movements at any time.

"Although the victory is not martial, but I, Yu Tai, must not become the laughing stock of others!"

Yu Tai looked at the drawings and secretly swore that as long as he researched the horseshoe by himself, people would say in the future that the second prince was kicked by the horse in order to study and protect the horse's hooves, what a good prince, but not that the second prince Yu Tai was kicked in the head when he played with the horse's hooves!

"Is that it?"

The Ministry of Works official nodded: "Second Highness, yes, His Royal Highness the Crown Prince let us make this!" ”

"Do you know how to use it?"

"Just put this under the horse iron, this nail, with a barb on it!"

The little official kept explaining the use of this horseshoe to Yu Tai, Yu Tai nodded after hearing it, and couldn't help but admire his eldest brother in his heart, his eldest brother still has something, which can be figured out!

"Are there any ready-made horse hooves?"

"Yes, I asked people to secretly make a few more and dedicate them to His Second Highness!"

"Well done, go get your reward!"

"His Royal Highness Xie Er!"

The little official happily retreated, while Yu Tai looked at the horseshoe in his hand, and looked at Qin Hui and Lai Junchen beside him: "Let's go, go and try!" ”

In the East Palace, Su Dingfang led a few of his war horses not far away, looking at the U-shaped iron piece in Yu Zhiqian's hand curiously, not knowing what Yu Zhiqian was going to do.

"I remember it looks like it's going to burn red, and then I put it on, but let's try not to burn it first!"

Yu Zhiqian thought about it for a long time and didn't think of a good way, after all, he was not a professional, so he finally decided to try slowly, and beckoned to the horseman not far away: "You nail this thing to the horse's hooves!" ”

"Yes, His Royal Highness the Prince!"

The groom is a professional and comes into contact with horses every day, so he knows very well that there is a section of the horse's hooves that is similar to a human fingernail, and it will not hurt to cut it.

According to Yu Zhiqian's idea, the horseman cleaned the horse's hooves, then put the horseshoe against the horse's hooves, then took out the nails, and slowly nailed them in.

Soon, the four horses' hooves were nailed, and after the groom led the horses for two steps, the horse's hooves made a crisp sound when they stepped on the bluestone slab, and Yu Zhiqian nodded with satisfaction.

However, as a rigorous scientist and inventor, Yu Zhiqian said that he could not be confused by the illusion in front of him, and that what was useful needed to be proved through practice.

"Su Dingfang, ride a horse to go around the city, how long does the horse run, and there will be problems with the horse's hooves?"

"Back to Your Highness, the average war horse, if you march a hundred miles in a hurry, the horse's hooves will be damaged, and it depends on the place you pass by, if it is a mountain road, the damage may be more serious, and the grassland will be better!"

"Then take two turns along Chang'an City and see the effect!"

"Whoa!"

The horseshoe is considered to have been studied, and now we are waiting to collect the money!

Yu Zhiqian couldn't help but think of a few generals who bet with him, they were all bets on treasures, what ancestral health care, not big swords, and jade pendants, etc., all of them seemed to be worth a lot of money, and then sold the patent of this horse hooves to the military department, or opened a workshop, specifically for horse shoes, and he would definitely not be short of money in the future!

What do you do when you have money? Yu Zhiqian fell into contemplation, he is already the crown prince, his father is the emperor, his mother is the queen, and he is already above 10,000 people under one person, although he is bullied by Cheng Biting Jin every day, but he is also the top part of the power of the Yu Tang Empire.

There is no shortage of money, there is no shortage of power, so there is only one way to repay the society? Engaging in invention? Improving your quality of life? It is indeed a good choice, after all, there are no toothbrushes, no soap, and not even bath towels in this ancient world......

When Yu Zhiqian roughly made a decision in his heart, Su Dingfang rushed back from outside.

"Is something wrong?"

"Your Highness, this horseshoe is a little unreliable, and it has fallen ......!"

Two of the four horseshoes have fallen off the horse's hooves, Yu Zhiqian couldn't help but touch his head, sure enough, invention and creation require continuous practice to succeed, how unreliable it is to understate it!

Yu Zhiqian now wants to drag that guy out of Yun Ye and ask how he did it......

"That, that's Ojiko!"

"The lower official is here!"

"Burn this horseshoe red, and then cover it on the horse's hooves!"

Ojiko is a blacksmith, and when he looked at the horse, he thought about the red-hot piece of iron, in case the horse was in pain, and he kicked it over.

"What are you doing! Just go! ”

"Yes!"

Ou Zhizi couldn't help but sigh, and stiffened his head, sure enough, the legend is true, this East Palace is the abyss, and if you come in, you will ......

A few minutes later, Ojiko trembled and put the red-hot horseshoe on the horse's hooves, and was relieved that the expected flying horseshoes did not appear.

"If you drive the nail in now, it shouldn't fall off!"

"Good!"

After finding out that she would not be kicked, Ojiko breathed a sigh of relief and began to get busy, and soon, all five horses were marked with horses' hooves.

"Su Dingfang, take a few people and ride around Chang'an City in circles to see if there is any problem!"

"Whoa!"

In the Wei Palace, Yu Tai looked at the horse with good hooves, and the crisp sound of stepping on the bluestone slab, he couldn't help but feel a little pleasant!

"I rode this horse into the palace, and I must rush to the crown prince Zhiqian and present the horseshoe to my father!"

"Second Highness, let's give it a try first!"

"Good!"

Yu Tai rode a horse, and after a few laps in the Wei Palace, he didn't find anything wrong, and he specially let people lose the blade on the ground, and the horse's hooves were injured, and after asking the horseman, this horseshoe can indeed play a role in protecting the horse's hooves, so that Yu Tai is more confident!

"Qin Hui, send someone to the palace to report the good news, and I will arrive later!"

"Whoa!"

Yu Taizhi patted his mount satisfactorily, and his heart was already happy, big brother, big brother, although you invented it, but I gave it first, and the credit is mine!

After preparing the rest of the horseshoe and drawings, Yu Tai carefully put it in his pocket, and then rode the horse with the horseshoe to leave the palace and rush towards the palace.