I do research in ancient times

After the Shizikou battle, the Feng family firmly pushed the territory of Yongxiguan to the west line of Yanling.

During this period, the soldiers guarding the border repelled two or three waves of Hu people's counterattacks one after another, and quickly built fortifications on the line between Shizikou and Yuling, and seemed to have established a firm foothold in the Monan grassland.

When the news spread to the capital, the government and the public were shaken.

It's not that sending troops to Shizikou is a great achievement. Although the front line of Shizikou is important, it is only valuable in a strategic position. Shizikou itself is a city full of grass and grass, and the surroundings are desolate.

The parties in the DPRK and China are more concerned about the Feng family's self-assessment.

Now that the battle for the throne is in full swing, the Xihe King, Dongshan King, and Shouping County King are fighting with great joy. The Gao family families have their own teams, but the Feng family, which holds the military power on the northern front, has never expressed its position.

The three kings each sent people to contact the Feng family, and the chief guardian of Feng would agree to whoever came. He talked nicely, but did not take any actual actions. It was obvious that he wanted to sit on the mountain and watch the tigers fight.

That's all right, after all, many old aristocratic families in the court, such as the Nanjun Lu family, have always had this attitude.It doesn't matter who will be the emperor in the future, what matters is that you have power, money and horses in your hands, and your status will not change because of the change of the royal family.

But the situation of the Feng family is different this time.Although the general is away and the emperor's orders are not accepted, but he sent troops privately without saying hello to the court, which is a bit disrespectful to the court.

What does the Feng family want to do?Is the land the king?

All of a sudden, the rebukes flew out of the capital like snowflakes, and went straight to the Dadu Protectorate of Ding'an City in Yongxiguan.

Those who cursed were all censor officials, filled with righteous indignation, and spoke uprightly, they almost pointed their noses and said that Feng Daduhu was going to rebel.

Feng Dadu had a rough face and thick skin, so he didn't care much.Didn't you see that the three kings and the influential families in the court didn't say anything?This group of mad dogs also like to bite randomly, if they really understand, they will fall into the trap.

But you can't let Wang Ba spray dirty water on him.

Dadu slammed his mouth, and asked his son to give a memorial to the Ministry of War in his name, saying that he had submitted a memorial to the late emperor at the beginning of the previous year. In order to prevent the Hu people from suddenly going south, Yongxiguan wanted to recover the land that had been occupied for many years. The lion's mouth is on the front line, and because of this, he has applied for a sum of military supplies.

At that time, the first emperor approved the proposal, but the food, grass and military supplies have not been distributed. Yongxiguan, who has no money and no food, dare not move without authorization, so this matter has never been discussed.

As a result, three months ago, Yongxiguan suddenly received a batch of grain from the capital.

After checking, it was approved by Shi Shaozhong, the minister of the household department, to reissue last year.Although the arrears of military pay has been paid for more than half a year, and there are suspicions of shoddy goods, the Feng family still kept in mind the emperor's holy order, and braved the storm to send troops. The frontline soldiers fought bloody, risking their lives , finally regained Shizikou City, which had been occupied for 17 years!

Now the front line is still suffering from hunger and hunger in the bitter cold weather. I implore the court to provide more clothing and food to keep out the cold, and to issue compensation to the soldiers who died in the war.

A memorial was written with sincerity and enthusiasm, not only the remembrance of the late emperor, but also the helplessness of having no money and no food. It also focused on the current predicament at the front of Yongxiguan and the imminent danger of Huqikouguan.Reading it makes people feel sad, and listening to it makes me feel like crying. It is simply a piece of loyalty that moves the world. Whoever scolds anyone is heartless.

As soon as this fold came out, the officials in the middle of the court were instantly dumbfounded.

Those who had something good to do went to the Ministry of War to look through the memorial, and they really found the military situation that Yongxiguan gave to Emperor Longcheng, and the content was exactly the same as what the Feng family said in the compromise!

Speaking of which, people have already reported the plan to send troops to the imperial court, and the first emperor returned the imperial pen and Zhu Zhu, but the Ministry of War and the Ministry of Households delayed the payment of military pay, which has been delayed until now.

The court has long forgotten the matter, and the soldiers of Yongxiguan still remember that as soon as they received the arrears of military pay, they immediately braved the wind and snow to fight outside the Great Wall.

The pot has already been thrown on the head of the Ministry of Households, and if you want to scold Yong Xiguan just for this, the speaker doesn't have to do it.

So it was over.On the surface, all the forces in the DPRK and China turned a blind eye to the actions of the Feng family outside the Great Wall, but they were actually vigilant in their hearts.

Among other things, this big official in the frontier cannot be offended, after all, he holds military power.

Seeing the chaotic situation in the court, the three vassals refused to accept each other, and it might take a big battle to distinguish between high and low.

Of course, this is also the worst plan, and judging from the current situation, it may not develop to that extent.But there is always no harm in befriending someone with military power. Even if the family is not included in the family tree, they should be respected because they were loyal to the country and defended the frontier.

All of a sudden, the Feng family became a favorite.A few high-ranking sects in the court even started to offer olive branches to the Feng family, wanting to send the outstanding children of the clan to see the scenery beyond the Great Wall.

It's just that these "excellent children" are male and female, and they are all young and young. It's really hard to say exactly what kind of knowledge they have.

But these things have little to do with Ning Fei.

He is now preoccupied with collecting debts.

The Feng family has now pushed to the west line of Yanling, and has begun to build fortifications to consolidate the city defense.

According to the news from the Tukang team on the front line, the Black Armor Army has not completely stopped on the west line of the Yanling Mountains, and one part is still continuing to move eastward, gradually clearing up the scattered Hu Qi. Only those who are on the front line can know these situations, and they have not open to the public.

No one knows where the Feng family is going to push the territory, but he Ning Fei had an agreement with Brother Mu Ye before, and he doesn't know if Brother Mu Ye, who is on the front line, still remembers it.

Hehe, if he doesn't remember, he should remind him to remember.

It's still winter now, after the first snowfall, Mo Zong's migrant workers have all returned to Wubao except for the kang team.

The heated kang withstood the test, and everyone moved into a new house. There are a lot of potatoes stored in the granary, so there is no need to worry about eating and drinking.

More cotton is ready to be harvested.

The cotton in the valley has been harvested under the careful care of the elderly group. They are all high-quality long-staple cotton, and there are almost no moldy or rotten peaches.

Before Xueluo, Grandma Qiu had already organized everyone to rush to harvest. All the harvested cotton bolls were put into the warehouse, and then distributed to everyone according to the plan. Everyone needed to complete part of the task of removing cotton seeds.

Now there are bright and clean concrete houses, warm kangs, skillful men made favorite household items, careful women raised some wild flowers for decoration, and when the snow fell, everyone nested together on the warm kang to remove cotton seeds and feel life Never been so bold.

After everything is over, everyone's face is full of relief, but some people are full of ambition.

It is about the blacksmith workshop that has made great efforts in this winter construction.

Because of the matter between Mu Donglai and Liu Tie before, although all the staff in the blacksmith workshop were hit hard, they did not slack off their work because of this, but became more attentive.

The flames in the three kilns never stopped. Countless raw materials were sent in to be crushed and calcined, and the finished materials were pulled out and sent to the construction site as soon as possible. Everyone did their best for Dongjian.

Ning Fei kept his word. After briefly summarizing and affirming the work of the blacksmith workshop, he announced that Mu Donglai's master and apprentice could return. The next task of the blacksmith workshop was to trial-produce a new steelmaking method.

Liu Tie knelt down to Juzi on the spot, covered his face with his scarred hands, and cried like a child.

He originally wanted to admit his mistake to Juzi again, and repent of his mental journey during this period of time.

However, the reality is that his masters, seniors and seniors were not willing to listen to him wasting time talking, and after a few words of comfort without sincerity, they dragged him aside and shut himself up.

Liu Tie: ...

Ning Fei kept watching coldly, and when everyone quieted down, she coughed lightly.

"Then let's start with iron smelting."

He took out a small wooden board and drew a schematic diagram of an iron-making furnace on it with charcoal strips.

"Before that, I checked Mo Zong's library and found that the smelting records of the blacksmith workshop were blank."

"I don't need to talk about the specific situation. Everyone in the blacksmith workshop should know it well. Let's put aside that period of time and talk about the recorded situation of the iron furnace."

"In your original iron smelting furnace, the blast position was placed at the bottom of the furnace, and there was no special slag outlet, so after the flame was turned off, a mixture of iron and other impurities would accumulate at the bottom of the furnace. This is the kind with holes. I call it a sponge for the time being. iron."

"This is pig iron, that is, the carbon content exceeds 2.14%. It cannot be called steel. It has a very low melting point and is just cast iron."

"But the carbon content of the steel we want must be controlled within 2%. I would like to remind everyone that the carbon content determines whether your steel is a good steel. With more carbon, the hardness increases, the forgeability and toughness Decrease, but this indicator is not absolute. It is best to control it below 1%, so that the performance of the refined steel will be excellent, and if it exceeds 1%, the hardness and toughness will decrease.”

Speaking of this, Ning Fei paused, looked at the blank eyes in the room, and sighed softly.

He knew that it was simply unrealistic to start with the elements, so he could only use cramming teaching temporarily and memorize by rote.

"The charcoal I'm talking about is this thing."

He raised the charcoal in his hand.

"The main composition of charcoal strips is charcoal, but not all of them. There are also some impurities in it."

"It's just like when you blacksmith, the slag you burn out contains many other things. It's basically the same reason."

"Theoretically, the smelted sponge iron is a mixture of pig iron, wrought iron and impurities, so you need to heat it and beat it to remove impurities. The first thing to drop is pig iron and impurities, because these two textures are relatively brittle and easy to be beaten. The remaining wrought iron must be continuously forged at high temperature to squeeze out the impurities inside, this is what you call "smelting steel."

Seeing everyone nodding their heads repeatedly, with expressions of approval in their eyes, Ning Juzi suddenly smiled and changed the topic.

"But as I said before, sponge iron is a mixture of pig iron, wrought iron and impurities. There may be traces of steel, but the content is very small, almost negligible."

"So what everyone repeatedly forges is just wrought iron, not steel, at least not the steel I am talking about now, which also explains why there is a difference between the Bailian steel produced by our blacksmith workshop and the Longquan Jianfang."

"Longquan Jianfang's [-] steelmaking materials come from high-carbon steel produced by the steel frying method. The Xue family is an outsider and an expert, and the sequence is not clear."

The young Juzi paused, and looked at the solemn crowd below.

"I ask everyone to remember a standard first. The iron or steel we are smelting now is essentially an iron-carbon alloy. Iron with a carbon content of more than 2% is called pig iron. The section is whitish, and it is usually called white iron. , This kind of pig iron is hard and brittle. Iron with a carbon content of less than 0.05% is called wrought iron, and the fracture is gray, and it is usually called gray iron; the one in between is steel."

"If you want steel, you have to work hard on the carbon content. The principle of the steel frying method is like this. After the pig iron is heated, iron ore powder is added, and at the same time, it is constantly stirred to consume the charcoal in the molten iron and reduce the carbon content in the pig iron. Get steel directly."

"But this method is troublesome to remove slag, it takes a long time and the output is low, it requires a lot of manpower, and it is not easy to guarantee the quality. We don't use it."

Ning Saw knocked on the small wooden board, drew a sketch of a steelmaking furnace on it with charcoal strips, and focused on drawing a thick triangle mark.

"The point is, let's start talking about filling steel now!"