"The sword is four feet, eight inches, seven cents long, and weighs five kilograms, fourteen taels and three cents. It has a round head, a round stem and two tandems, and can be held with both hands; its lattice is like a diamond, slightly narrow, its ridge is high and oblique, and it converges to the two places of the three, with extremely sharp edges and unparalleled edges. The swords are in line with it, and no one can stop the edges..."

In Xianyang Shaofu, a long sword was placed in the hands of the craftsman Ye Shun. He was explaining this sword in detail to the right prime minister Changpingjun. Changpingjun had seen this sword in Dunluo, and he also knew the shape of the Chu sword very well. This sword is a standard Chu sword style, with a lengthened willow leaf shape, while the Qin sword is shaped like orchid leaves, which is extremely slender. The sword is long and the Qin ruler is slightly longer than the Chu ruler. If this sword is measured by the Chu ruler, it should be exactly five feet.

The sword is very small at least five feet long, and at least Qin cannot do it. This should be used by the father. If it were just the sword used by the father, Changpingjun would not come. He learned from the Houzhe that the Chu State had newly made a kind of giant iron. This sword was cast by giant iron, and the real name of the sword was called the chopping tripod-the sword was cut off without being sharpened.

In this era, swords were all cast, and the lower shape was taken from the sand pattern. In "Huainanzi Xiuwuxun" by Liu An of the Western Han Dynasty, "The First Wave of the Fish Intestines, when the pure hook fish intestines is lowered, it cannot be broken when it hits, and if it stabs, it cannot be penetrated. Then, if it is sharpened, if it is rubbed, the water will break the dragon boat and the land will break the rhinoceros armor" is exactly what it means to cast the sword. After the lower shape, the sword must be "hardened" and "hardened" and "hardened the rhinoceros (sharpening: the tip of the sword; the edge of the sword: the blades on both sides)" can become a sharp sword, "water will break the dragon boat and the land will break the rhinoceros armor".

"How did the Jing people make the giant iron?" Of course, Changpingjun came here not to look at the sword. He was concerned about the secret of the giant iron.

"Please ask the Prime Minister." Ye Tun came out of the sword room, turned a few times, and took Changpingjun to a shed. In the shed, a cradle-shaped furnace stood in front of everyone, and not far behind this furnace were three charcoal iron smelting furnaces.

"This is the furnace of the Jing people refining a huge iron. The eldest son of Jing State said that this is a converter, which can be turned into a converter and can be poured into iron." If Xiong Jing was here, he would definitely be so angry that he would spit three liters of blood. The current converter that he had scratched his head and recovered was actually shamelessly stolen by the Qin State's Young Mansion.

In fact, he was confused and did not understand the Qin Dynasty's pursuit of farming and war technology. Qin was originally developed later, and after implementing Shang Yang's law, he only focused on farming and war. Most of the private vendors and private workshops were not available. Even the Prime Minister's government could not have a private workshop. How dare they have it? The Shaofu workshops are so strict that the Qin law is followed step by step, and everything is customized. Those who do not follow, those who have not completed ones are either shrouds or armor, and those who have no money will become ghosts of the city. This makes the craftsmen only dare to complete the plan according to the workbook, and who dares to find another method.

There are few original techniques under the strict system, and the only thing that can be relied on is the six eastern countries. Once the six countries have any new farming and war methods, Qin will try to steal them through Marquis or Mo people and introduce them to the country for promotion. It can be said that Qin is the weakest in technology, but the Qin is the strongest in technology. Technology such as Jutien has attracted the attention of Qin's marquis since its emergence. Then, through the Mo people in the Chu State's founding and smelting authority, the converter soon moved westward for more than a thousand miles and appeared in Xianyang Shaofu.

"Then how to make a great master?" Chang Pingjun read the news and knew the name of the converter, but he still couldn't understand how to make a steel.

"The Jing people smelted iron with hot wind to smel it, so that the iron turned into water, and the iron was poured into the converter, and then blew it with air, and it became huge iron after a moment of carrying it." Through the retelling of the Mozhe, Ye Tun roughly knew the process of steelmaking in the converter. "Just..."

"Just how?" Changpingjun was slapping the cradle-like converter with his hands, and he thought the stove was very strange.

"The Jing people have two methods to refine the Iron: one is a small furnace method, called it an ink furnace. I don't know how the ink furnace is; the other is a converter, but the converter has not been refining the great iron, and the huge iron produced is said to be..." Ye Teng thought about it and had to repost the words in the original text: "It is said to be hot and crispy, and it is cold and crispy, so it cannot be great, so the eldest son of Jing asked the smelter to test it with national iron and stone."

It was stolen, with only the shape but no theory, and the specific technology was incomplete. For example, Ye Tun thought about it for a long time before he realized that the hollow of the iron was used for water-induced cooling. It was this Scottish air vent that caused the production of copper and iron smelting in Qin to soar last month, and the consumption of charcoal was reduced by half. The King of Qin was very pleased.

"Is this technique not done?" Changping Jun was inevitably a little disappointed. After Lu Buwei left his post, he became a prime minister, and the next step of Qin was to destroy Zhao. The Zhao people were persevering. Whenever Qin fought with it, even if it was a big victory, he would hurt himself 800. He hoped that the Qin army could have a huge iron army so that it could shock the Zhao people and reduce the casualties of Qin.

"It's not done." Ye Shun said the truth, "The method of refining huge iron in the Jing State's ink furnace is very secret, only Ou Chouzi knew it, but his disciples didn't know it. Although the method of converting furnace was not successful, the eldest son of Jing State instructed the establishment of a mansion to try it again, regardless of the money. There are only a few places in the Jing State's iron ore. Under the Qin State's rule, the iron ore is ten times that of Jing State. If you try it widely, you will definitely be able to make huge iron before the Jing people."

"That's all." Chang Pingjun looked at the converter again and finally responded.

"Can the Prime Minister tell me that he was weak and brought back a pair of giant armor from Jing State?" He moved out of the shed and Ye Tun continued.

"Know." Changpingjun nodded, "The sword and the huge armor are all treasures."

"This giant armor is also made of giant iron. Ordinary sword stabs cannot be inserted, but the armor piece is taken apart and placed in the furnace. If it is released, it will not be the case if it is tried again." Ye Shun said another unsolvable thing. He was giving Changpingjun a precaution.

"Oh. How about the armor sheet coming out?" Changping Junqi asked. "Does the sword pierce in?"

"If you have thinner before entering the furnace, you can hit it with great force. You can hit it with great force after entering the furnace." Ye Shun looked extremely solemn, "Why, I'm thinking about it but can't understand."

A huge armor that cannot be penetrated no matter how hard a sword is, it will not be a huge armor when it is released into the furnace and then released into the oven, but it will become an ordinary iron armor. Changpingjun was shocked when he heard this, and he stopped walking: "There are secrets for artificial armor in Jing Kingdom?"

"That's right." The technique of smelting of the Giant Iron is a problem, and the performance of the Giant Iron Armor is another problem. Xiong Jing was worried that it finally became a reality, and Qin began to realize the importance of quenching steel weapons.

Copper alloys and ferroalloys are two different metals, and the smelting characteristics vary greatly. Copper alloys, such as bronze, can also be quenched, but the purpose of bronze quenching and steel quenching is completely opposite: the purpose of high tin (more than 18%) bronze quenching is because high tin bronzes have high hardness and are not easy to process. Quenching can soften and facilitate processing; while steel itself has good mechanical processing properties. Quenching is to improve its hardness and increase the HV value from about 200 to above 500, or even exceed 700.

Because of this, steel weapons without quenching do not have advantages over high-hardness bronze weapons. Even if the carbon content of iron is too low, they will be at a disadvantage. This is also an important reason why the six Kanto countries have iron weapons but cannot form an overwhelming advantage over the bronze weapons of Qin. However, after good quenching and tempering, steel weapons with tempering technology are better than Qin's bronze weapons.

Ye Tun discovered this problem after annealing the gua tablets. However, the Qin State mostly used copper smelting, and iron smelting was mostly pig iron smelting. According to the inertia of copper weapons, pig iron was used to make weapons and agricultural tools for casting rather than forging. When the iron was poured into the model, there was no problem of quenching or not quenching. Even if Ye Tun thought of quenching, he would not guess that quenching would make the weapon hard. He would only follow the inertia of bronze quenching, believing that quenching would make the steel soft.

The secret of refining the Giant Iron and the secret of making the Giant Armor. These two puzzled secrets made Changping Jun leave in excitement and return in defeat. His idea of ​​attacking Zhao with the Giant Iron Army was shattered, and Xiong Jing and Ou Yezi both issued assassination orders on the Chu State. If no one knew these two secrets, it is very likely that the sword Giant Armor would never be created again.

Changpingjun returned to the Xiangbang Mansion silently. Lu Buwei was absent as usual, and countless official documents were waiting for him. He was busy until dark. Before he returned home, he passed the Wei River again, entered the palace, and reported to his aunt the important matters.

"In this way, Lu Buwei..." In Huayang Palace, all the forms are in the style of Chu State, and the actors played Chu music at this time. The Queen Mother Mi Ji was the only one in Qin State who dared to call Lu Buwei the name directly. She seemed a little lazy and didn't want to say what Lu Buwei was like. "Who is this Li Si? A Chu? A Wei?"

"Return to my aunt: Li Si said he came to Chu State, but he was actually from Cai." Changping Jun explained Li Si's identity in detail. "He first served as a minor official in Shangcai County, and then became a scholar Xunqiu as his teacher. After leaving the army, he entered Qin and became a disciple of Lu Buwei. He made several contributions, and the king regarded him as a guest minister. After Lao Ai's rebellion, he saw that Lu Buwei was about to be in danger, so he sent someone to tell me, but I didn't care at the time. He knew the general trend in the court, so he secretly investigated Lu Buwei's crimes with his former disciple. This is what..."

Everyone pushed the wall down, but the person with good eyes always pushed the front. Li Si was a person with very good eyes. Today, he sent Lu Buwei's "crime evidence" to Changpingjun. This evidence seemed very important to Changpingjun, so he entered the palace to report.

"You will be fine if you deal with it. If he has made contributions, he will be rewarded in the future. As for his motherland..." Mi Ji was above the people and didn't ask about the details.

"Xiang Yan has become the general, and the country has more than 300,000 soldiers, and the war may change." Changpingjun said quickly.

"The war is not urgent. If Zheng'er says he will withdraw his troops, then he will withdraw his troops. Zheng'er doesn't say it..." Mi Ji yawned.

"I'm sure, my nephew." The battle between Qin and Chu was protracted, but Changping Jun dared not say anything about half of the word "retreat".

"Which princess and squads are waiting to be married in the mother palace, and which princess is worthy of Zheng'er?" Mi Ji suddenly asked about him.

"My nephew only heard, only heard..." The princess Changpingjun of Chu didn't know much. He thought about it and said: "The daughter of Concubine Zhao is the legitimate princess, but as for the hairpin, it is said that Concubine Yan's daughter is Yao Tiao Xianshu, and the Princess of Concubine Yue gave birth to Princess Chia, whose skin is better than snow, like an immortal..."

Before the princess finished speaking, Changping Jun interrupted again: "Auntie, many people in the battle between Qin and Chu were killed. The new king first established his marriage with Qin. I'm afraid..."

"If you don't marry Qin, don't be enemies with Qin?" Mi Ji smiled and said, "I said the last time that no matter who is the new king, Yang Wenjun is the chief magistrate and has a good relationship with Qin. Now the eldest son and the legitimate son are all dead. Who doesn't want to be the king of the princes? If you listen, you will establish him; if you don't listen, you will establish him."

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Chapter completed!