One morning in the late autumn season, in the meeting hall of the Qi Nian Palace, King Yingzheng of Qin was making the final preparations to attack Zhao after destroying Han. After discussing some details of grain and logistics again, King Qin won the government and wanted to disperse the dynasty.

Suddenly, Fusu spoke: "Father, my son has something to say!" King Qin Yingzheng was stunned for a moment, knowing that his son usually doesn't talk much, but as long as he speaks, he will have amazing words, so he smiled and said, "Wang'er, what do you have to say?" ”

Fusu said respectfully: "Father, now the sons are still young, and they can't command the soldiers and horses for their father and kill the enemy, but the sons want to go deep into the army and the various military buildings (arsenals) to really understand the military system and weapon manufacturing methods of my Great Qin, so as to prepare for future use." So please ask your father to issue a pass token, so that Fusu can freely enter and leave the army and build soldiers! ”

"Oh, that's right!" King Qin Yingzheng saw that Xiao Fusu was still young after all, although he had already attended the court meeting, he had never held any real position, thinking that Fusu felt depressed and wanted to go out of the palace to relax, so he agreed: "That's fine, only by going deep into the army, can you understand me and understand the strength of my Great Qin's military power!" After the dispersal of the dynasty, go to the south study with your father to get the token! "Yes!" Seeing King Qin agree, Fusu couldn't help but smile happily!

And when the ministers saw that Fusu was so young, they also knew that they could go deep into the grassroots and experience the hearts of the people, and they couldn't help but admire it very much for a while. However, Zhao Gao, Li Si and other parties couldn't help but gradually become wary of Fusu, who performed very well!

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The next day, a group of chariots and horses slowly left the palace and went straight to the central army of the Qin State west of Shanglin Yuan. Except for the nine people who accompanied Ji Wuxin this time, there were only Che Qiong and Fu, the coachman.

Fusu was very excited at this time, after all, he was about to witness the true face of Lushan, the most powerful weapons industry in the world today! Think about how many amazing secrets are hidden in Qin's military construction when they defeat the iron weapons of the six countries with seemingly backward bronze weapons, and at most the Qin State's military construction has to supply millions of Qin army's combat weapons at the same time!

When they came to the huge scale of the central military construction, the huge and endless building complex couldn't help but make everyone stunned: it is worthy of the central military construction of the Qin State, and the scale is really amazing! At this time, the engineer (equivalent to the factory director) of the military construction was already waiting at the door. When Fusu got out of the car, he hurriedly greeted him, bowed down, and said respectfully: "The villain soldier engineer is the son!" ”

Fu Su smiled when he heard this: "No need to be polite, I will come to disturb the engineer every day in the next few days, just don't be annoyed!" Hearing this, he panicked: "How dare you, how dare you!" Childe is willing to come to inspect this army, it is an honor for us to build 5,000 troops and craftsmen, how dare you say it! Fusu was stunned when he heard this: "More than 5,000 people, your work is so big?" ”

Shi replied proudly: "Yes, this construction is the largest military construction in my Qin State, which is divided into five major craftsmen's houses, with more than 4,000 craftsmen and 1,000 supervisors!" The total number is more than 5,000! ”

"Oh, that's it!" Fusu couldn't help but be secretly surprised. Fusu, who immediately thought about it, said to Huofeng and the other four women: "These weapons or something, if you don't want them to go with me, you girls are not very interested, right?" Why don't you stay outside, or take my token to the Upper Forest Garden to hunt! The four of Huofeng blinked their coquettish eyes and smiled meaningfully: "No, has Childe forgotten our origins?" We're all very interested in Qin's weapons! Fusu patted his head: I almost forgot that they were disciples of Momen, and these strange things were what Momen was best at.

Fusu, whose eyes were shining, quickly made a decision, so he replied: "Then there will be a laborer to lead us around!" "Yes!" As a result, the respectful engineer led them into the vast and top-secret weapon kingdom of the Qin State.

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The first craftsman's room: inside the gold and stone room.

As soon as Fusu and his entourage entered the huge production workshop, they immediately felt a blazing heat wave rushing towards them. Even though it was late autumn, I immediately saw sweat on my forehead, like entering a steamer. Fusu took a look, in the huge workshop, countless Qin men were sweating and sweating in the huge workshop. Huo Feng and the other four girls couldn't help but blush on their faces, looking delicate!

There are roughly three categories: the first group of people are the furnace craftsmen, who guard the blazing fire of a furnace and constantly control the blazing fire with a drum lighter. On the stove fire, there are crucibles, and the crucible is just a dense pile of all kinds of ores, which gradually melt into a relatively pure metal juice under the high temperature smelting of the furnace fire. The second type of person is the turnsman who is responsible for constantly adding ore and transferring the gold water. The third type of person is the craftsman who is responsible for purifying, cooling, and forming the blank of the gold water transferred by the transferor!

Looking at this hot, non-stop, and orderly scene, Fusu was deeply shocked: "The tacit understanding and proficiency of this cooperation can be compared with the tight worker ant colony, what a hard-working Chinese person!" Then he turned around and asked aloud, "What ore is smelted here?" He also replied loudly: "Mainly bronze, then tin, and iron is rarely used!" ”

Fusu nodded and said, "What about the use of copper, iron, and tin?" He replied: "Bronze and tin are mainly used to form alloys and forge all kinds of weapons. The reason why our Qin State has the best weapons in the world is because there is a secret about the mixing ratio of bronze and tin! Fusu's heart was itching, so he asked, "Can you tell me?" ”

He smiled and said: "The prince holds the king's token, so he naturally has the right to know, otherwise even the general has no right to know." The proportions are like this, and we have a few sayings here:

Six points of its gold and tin are one, which is called the Qi of Zhong Ding;

Five points of gold and tin are one, which is called the axe and catty;

Four points of its gold and tin are one, which is called the Qi of the halberd;

Three points of its gold and tin are one, which is called the Qi of the big blade;

Five points of gold and tin are two, which is called the Qi of cutting and killing.

Half of its gold and tin is one, which is called a lesson for Qi!

It means that if there are five parts of bronze and one part of tin in six points of gold water, then this kind of gold water can be used for bells, because the hardness of this kind of gold water is poor; If there are four parts of bronze and one part of tin in the surface of the five-point gold water, this kind of gold water can be used to forge swords, because the hardness and flexibility of this gold water are relatively moderate; If there are three parts of bronze and one point of tin on the surface of the four points of gold water, this kind of gold water can be used to make spears, ge, beryllium, halberds and other long weapons, because the hardness of this kind of gold water is relatively high; If there are two parts of bronze and one part of tin in the three-point gold water, this kind of gold water can be used for some heavy weapons, because they are harder; If there are three parts of bronze and two parts of tin in the five points of gold water, this kind of gold water may be used to make small weapons such as arrowheads, because the hardness of this kind of gold water is too high to be bigger; If the bronze and tin in the two gold water are half each, they can only be used for chisels and so on, because this kind of gold water has the highest hardness and cannot be used for other things! These gold-water ratios are the secret of my Great Qin, and the sharp armor of swords, halberds and other weapons cast in this proportion is in the world! He said proudly, obviously very proud of his work!

"Oh!" Hearing this historical secret, Fusu couldn't help but nod secretly, Fusu also learned in chemistry courses: in the case of copper-tin alloys, the amount of tin determines the hardness and strength of bronze products, and the more tin, the harder the bronze products become, but also the more brittle they become. And this precise proportional coordination has been strongly verified by advanced science in modern times, and when ancient science and technology were underdeveloped, these valuable experiences were summed up by many craftsmen of the Qin State with many years of painstaking efforts, and the credit for defeating the Six Kingdoms also has their share!

Suddenly, he remembered the usefulness of metals like iron, and before he could say anything, he asked, "What about molten iron, and what is it usually used for?" Shi smiled and said disapprovingly: "Molten iron, generally mixed with some other ores to make plows, hoes, palladium and other agricultural tools, our Qin State rarely uses iron to make weapons, mainly because iron is too brittle, easy to break and fragile, not suitable for direct forging, let alone used to make weapons." However, in terms of the production of iron weapons, the six countries of Kanto are better than us, but the iron weapons they make are far less sharp and durable than our bronze weapons! Therefore, we can dominate the world with the advantage of armor! ”

"Oh, I see!" Fusu thought to himself: It seems that the development of iron tools is still very immature, and the use of iron tools is still at the initial level of pig iron, and it may not be possible to raise the temperature of the furnace fire to this point. It is estimated that it will not be until the era of Emperor Wu of the Han Dynasty that a more mature iron-making process may be developed, and it is still early. As for the iron used by the gods such as Cadre General and Mo Xie now, it is not ordinary iron, but the meteorite iron that rarely exists in nature is used, and it cannot be produced on a large scale at all. Remember that according to the estimates of modern experts: the furnace temperature is about 1,000 degrees, and the iron ore is smelted into mature iron, but this iron is too soft, the availability is too poor, and it has no practical value; Pig iron can only be used to cast ordinary iron farm tools because it is raised by about 200 degrees with a blower, and ordinary pig iron can only be used for casting general iron farm tools, etc., because it is too brittle and easy to break, and it still cannot meet the standard of weapons. Only after the pig iron is softened, forged, quenched and other processes can it be used to make weapons. It seems that the current production technology of Qin iron is still in the stage of pig iron, and the six countries of Kanto are one step ahead of Qin and have mastered the preliminary finishing technology of pig iron!

Thinking of this, Fusu, who already had a preliminary understanding of the production of weapons in various countries, nodded and said, "Then let's go to the next craftsman to have a look!" "Yes!" He hurriedly walked in front of the head and led the way for everyone in Fusu.