Zhu Yu looked at the official in front of him, his cheeks were dark, and he was ruddy in the high temperature for a long time.

Zhao Li is the ambassador of Jiangxi Jinxian Metallurgical Institute and an official of Zhengbapin.

He was originally a student of the Yamen of Fengyang Mansion, responsible for copying the account books, and later the gentry wanted to ask him to change the field books, but Zhao Li not only did not agree, but also sued Zhu Yuanzhang.

At the beginning of the Ming Dynasty, scholars could go directly to the sparse.

Zhu Yuanzhang praised him for his uprightness and ordered him to come to the iron smelting institute in Jinxian County to be an ambassador to supervise iron smelting.

Zhu Yu began to look east and west, one word, hot.

Open air and very basic.

You can see four big men pulling the bellows, which are only a little shorter than people, quite large, and supply air to the iron-making furnace, and there is a brick wall between the bellows and the iron-making furnace to block the heat wave from the iron furnace.

Even so, the man who pulled the bellows was red and sweaty.

This is true of every iron-making furnace.

Thousands of laborers came and went shirtless, and everyone was busy.

"There are eighty-five iron furnaces here, the furnace body is more than one zhang and two feet high, each furnace can hold more than 2,000 catties of iron sand, and the iron is related to raw materials and fuels."

Zhao Li stood beside Zhu Biao with a bow.

He didn't dare to report the specific amount of iron to Zhu Biao, in case the imperial court regarded it as a standard and one day it didn't meet the standard......

"By the way, His Royal Highness the Prince, the northern border affairs are weak, and the armor is insufficient, Your Majesty ordered Jinxian to supervise the construction of 400,000 catties and transport them to the capital for backup, and now there are 260,000 catties, which can be sent to the capital first."

Zhu Biao knew how much credit this was, and couldn't help laughing: "It's hard work Lord Zhao." ”

At this moment, a forced servant ran over in a panic and shouted:

"My lord, His Royal Highness King Qi wants to turn off the fire!"

Zhao Li was stunned, and turned his head suddenly in fright, this was rushing to the production task, and he was suddenly in a hurry: "Stop him!" Stop him! Your Highness doesn't know that once the furnace temperature is cold, it will be difficult to burn again. ”

After listening to Zhao Li's words, Zhu Biao was a little dazed and nervous, and he had a bad premonition in his heart.

At the other end of the iron smelting station, Zhu Rong was looking at the seven or eight big men in front of him and urged: "You dare not listen to Lone's words!" Put out the fire first, and let Lone look inside. ”

The stove has no lid, and the temperature is so high that it seems to be close to the clothes that can burn.

The big man in a somewhat different dress stepped forward, this person was the deputy envoy, and he shook his head: "Your Highness, forgive me for not being able to follow!" ”

At this time, Mao Xiang walked up, pulled out his portable saber, put it on the neck of the deputy envoy, and said calmly: "Listen to the king of Qi, put out the fire." ”

Zhao Li didn't know Mao Xiang's identity, he looked at Zhu Biao, Zhu Biao was a little surprised, thinking that it was his father's will, and nodded lightly.

The most important thing in blast furnace ironmaking is the internal structure of the furnace body.

At the beginning of the Ming Dynasty, it was impossible to reach such a height, and Zhu Rong never thought that to be able to reproduce the level of iron smelting in later generations, it was to find out what the current technology could improve.

"Brother, I want to build a new stove!"

The internal structure of the iron-smelting furnace is simple, there is nothing to look at, it is a large vat made of mud, with an open opening, and a small hole in the furnace body, and the molten iron will flow out of the hole.

Zhu Rong had never been an iron-smelting worker, nor was he a designer, so he ordered to find the best craftsman, the deputy iron-smelting envoy who stopped him.

Zhu Rong has found a place where this stove can be improved.

It's actually quite simple.

The first is that there is no furnace cover, open refining, escaping a lot of heat, the biggest feature of the blast furnace is that it is closed, and only oxygen is sent through the bellows.

The second is that there is no slag discharge outlet, and the slag will be refined more and more, and the iron production rate will become less and less, until it is ceasefire and cleaned up when it accumulates a lot.

He had to build a partition inside to separate the slag from the molten iron.

Make another opening and take the slag at any time.

Zhu Yan looked at Zhao Li very seriously, "Listen carefully to Gu's words......"

He did not tell the deputy envoy the proportions of the throat, the body, the waist, the belly, and the cylinder.

Instead, pointing to the furnace body in front of him, he told him in an easy-to-understand way what to install in this position, how to change the furnace body, and where is the position of air supply......

As for what the inside of this furnace will look like, that is the business of this group of craftsmen, and to be honest, Zhu Yu is not sure that he can make it.

Zhao Li frowned when he heard this, turned his head to look at Zhu Biao, and his face was sad, "Your Highness, does the imperial court really want to change the furnace?" ”

This iron-making furnace is made by mixing salt and mud, and if there are cracks in the salt mud, it will be wasted, and it will take a month to build.

Zhu Biao was stunned when he heard this, he didn't answer immediately, and looked at the deputy envoy solemnly, "What my seventh brother said, how much truth does it make?" ”

The deputy envoy was born in a craftsman, and the iron-smelting method was inherited from the Yuan Dynasty, and when he heard this new smelting method, he couldn't help but be suspicious.

But he was bold:

"I think it doesn't hurt to try it with a stove."

Zhu Biao immediately ordered to change!

Zhao Li immediately ordered someone to make the salt mud used in the iron-making furnace.

Zhu Rong couldn't see it, Zhu Biaogui was the crown prince, and there was no mansion in Jinxian County, Jiangxi Province that could be used as a line, so he ordered a return trip on the same day. On the way back, Zhu Biao was very curious about Zhu Rong's knowledge.

"Seventh brother, how did you come up with it?"

Zhu Yu looked at Zhu Biao proudly, "Brother, I want to scold Bachelor Song again, Confucius said that you can do it without learning, I will take a look." ”

Because in this day and age, what cannot be explained will always come down to the theological conclusion of genius and genius.

Liu Bowen has knowledge through heaven and earth, can predict wind and rain, and there are such strange people.

Zhu Biao didn't think it was strange.

Moreover, he saw it with his own eyes, and Zhu Rong really could see it at a glance.

Zhu Hu, this guy disappeared as soon as he arrived at the iron smelting station, this guy got back a lot of medicinal herbs, and the carriage was already narrow, and there was nowhere to put his feet at this time.

Zhu Biao looked at this younger brother dissatisfied,

"Fifth brother, are you going to give it to your father?"

Zhu Hu's expression stiffened, and he gradually lowered his head.

At this moment, Zhu Yu on the side said: "The fifth brother looks like he is not kind to others, in fact, he is concentrating on pharmacology, and he has hidden medicinal herbs and medical books under the bed in the hospital, brother, will you keep the secret for the fifth brother, right?" ”

"Seventh brother!"

Zhu Lu grabbed Zhu Yan's neck.

Zhu Biao ignored the two fighting, he knew Zhu Yuanzhang better than his younger brothers, and sighed: "If my father knows, I will definitely reprimand you for not learning and evading the responsibility of governing the fiefdom, which is not the blessing of the people!" ”

"Please brother, don't tell your father."

Zhu Hu also knew that he was guilty, and said guiltily.

Returning to the capital from Jiangxi, he would pass by Jiangning County, Zhu Biao proposed to go to see Liu Ji, Liu Ji tanned a little, his eyes were clearer, and he never spoke much.

Zhu Biao felt a little guilty, but Liu Ji didn't blame him.

There is Zhu Biao, and Zhu Yu is only a few words of greeting on the surface.

Returning to the capital, Zhu Yu saw a huge contingent of scholars pouring out of the city gate, these people were the prisoners of the country, and they were also the newly appointed officials after the empty seal case.

They will go to every state and county in the world and take up official positions.

Mao Xiang ordered the inspector to step forward to open the way to prevent collision with the prince's car.

Zhu Biao stopped, his face was serious, he stepped out of the carriage, ordered the inspector next to him to give way to the official road, and stood on the side of the road, watching these scholars go far away in the way of paying attention.

He said with emotion: "The world is still barren now, and when the iron smelting comes out, and there are these officials, the people will definitely live and work in peace and contentment." ”

"Ah, brother, I didn't say it would work."