At night, Guangling City, Beifu Marshal's Mansion.

In the compound, there are constantly herald sergeants hurrying in, and the clerks and the like, holding a handful of official documents, or holding bamboo slips and silk silks, walk quickly, a team of patrol sergeants, holding a lance, three steps and a sentry, five steps and a post, the atmosphere is not ordinary serious.

In a side room, Liu Muzhi was gobbling up a bowl of shredded chicken soup with Ulva vegetables, he took the last bite, licked off the remaining residue on the bowl, closed his eyes, and breathed a long sigh of relief, as if he was reminiscing about the beauty on the tip of his tongue just now.

Liu Yu sat beside him and hooked the corners of his mouth: "Dead fatty, you have eaten up my military salary for a month, okay, it's time to talk about it." ”

Liu Muzhi opened his eyes and sighed meaningfully: "If you have this lettuce soup to eat every day, how good it would be." ”

Liu Yu said with a smile: "If you have made meritorious contributions in battle, been promoted, and won knighthood, are you still afraid that you will not have food?" Sometimes I think you're smart, but sometimes I think you're stupid more than you think. ”

Liu Muzhi shook his head: "I'm just a small member of the army, there are two or three hundred of my level here in the Chinese army, and I am not a Chinese soldier like Wang Mi to join the army, I am afraid that it will not be my turn to offer advice." ”

Liu Yu's brows furrowed: "Why, Xuan Shuai transferred you here and didn't let you offer good advice?" ”

Liu Muzhi sighed: "Now that there is no big war, what is the best way to offer?" Since our army suddenly dispatched five days ago, frightened the Qin army to retreat fifty miles and relieved the siege of San'a, General Tian's headquarters followed and retreated south, and even the soldiers and civilians of Pengcheng were evacuated. Now that the Qin army occupies the entire Huaibei, and the war has entered a phase of stalemate, no one dares to act rashly, what else can I contribute? ”

Liu Yu smiled slightly: "Isn't this the tactic you and I discussed that day?" Since Xuan Shuai has used this, he will use our future schemes. ”

Liu Muzhi wiped his mouth and said, "Slave, this advice depends on the timing." Last time, our army was newly defeated, and Xuan Shuai needed to speak widely and listen to the opinions of many parties, and those other families did not dare to contain it at this time. But this time the crisis has been temporarily alleviated, like the king of Huiji, the Wang family, these families, began to point fingers again, those who joined the army with higher official positions, most of them are children of the family, they are gossiping at this time, to show their role, you and I imagine that last time I made a statement, but I am afraid that it will not be easy. ”

Liu Yu sneered: "Even if you can't speak, you can see a real chapter on the battlefield, and the next thing is nothing more than training for a few months, and after relying on the elite soldiers and armor, you can eliminate this Qin army." Today, I'm here for this, okay, no more nonsense, you can quickly talk about how to build this treasure knife. ”

Liu Muzhi put away his smile and said: "Jinu, I really can't help you with this, the armor can be mass-produced by minting money, but the weapon cannot." It's not a question of methodology, it's a question of resources. ”

Liu Yu's brows furrowed: "Are you saying that the quantity of refined steel and 100 steels is insufficient?" ”

Liu Muzhi nodded: "Yes, what you want to use is a knife, not a spear lance, this knife is built as a whole, not like a spear lance, you just need to change the tip, and Kong Jing is right, even if it is built as a whole, the blade is too hard and easy to break." So the treasure knife has always been extremely expensive, even if it is Gongsun Wanghou, there are only one or two, it's not that I don't want to help you, but I really can't help. ”

Liu Yu was speechless for a long time, today he came with hope, wanting to get an answer from Liu Muzhi, but he didn't expect this to be the result, he sighed: "If you don't know how to say it earlier, you will still cost me so much." ”

Liu Muzhi laughed: "Didn't you already spend money to buy these foods before you came to me?" If you don't give me food, you can eat it yourself, anyway, you don't have any requirements for food, it's better to be my beauty. ”

Liu Yu gritted his teeth: "It doesn't matter if you eat it, but this thing can't be done, I really can't explain it, I only create fine armor, but there is no sharp blade, and I can't sweep thousands of troops on the battlefield, I'm always unwilling." ”

Speaking of this, the corners of his mouth hooked: "If wrought iron is very soft, can you find a way to only use 100 smelted steel on the edge of the blade, but use wrought iron on the back of the blade?" ”

Liu Muzhi sighed: "This method has long been thought of, and no one has been able to make it for hundreds of years, because wrought iron is too soft, although it is too rigid and easy to break, but it is as soft as wrought iron, and it is not practical." ”

Liu Yu nodded thoughtfully: "Since steel is formed by constantly adding carbon powder to wrought iron, can we also add carbon powder to wrought iron to make it harder?" ”

Liu Muzhi said with a smile: "This idea is not bad, but this heat is not accurate, and if you want to pour 100 steel into wrought iron, when you add charcoal powder to wrought iron, it is equivalent to adding 100 steel, which will soften the hard 100 steel." After all, the various additives in 100 steels cannot be changed casually, and they become pig iron as soon as they are transformed. ”

Liu Yu sighed: "I didn't expect this matter to be so troublesome, even you have nothing to do!" ”

Liu Muzhi nodded: "But you can try this idea, although the wrought iron is soft, but there is a lot of charcoal powder in the 100 steel, maybe if it is well controlled, you can slowly infiltrate some of the carbon powder in the 100 steel." ”

Liu Yu's eyes lit up, and he hurriedly said, "Seeping into the wrought iron?" You mean, mixing two kinds of steel together? ”

Liu Muzhi shook his head: "No, you must not simply mix it together, what you need is a blade of 100 steel, and the back of the blade is wrought iron with charcoal powder, not a whole knife mixed with 100 steel and wrought iron, this kind of knife is not hard, soft or soft, it is no different from ordinary pig iron knives, it is definitely not what you want." Therefore, this requires you to master the timing of quenching, when the steel will be soft but not soft, and the wrought iron has just seeped with charcoal powder and hardened, quench it all at once, only in this way, you may be able to make the knife you want. ”

Liu Yu gritted his teeth: "So, only I keep trying?" ”

Liu Muzhi stretched his waist and burped: "Jinu, all the things in this world, between thinking and getting, there must be one to do." The knife you want is what thousands of skilled craftsmen want to make, but there is always a little bit of heat, you are not a professional blacksmith, but only a few days of iron, you can think of so much, perhaps, God will really favor you, let you invent this kind of iron like clay treasure knife. ”

Liu Yu stood up, turned around and left: "Then I will ask you Jiyan, I will do it now." ”

Liu Muzhi's voice suddenly sounded in the back: "Wait a minute, there is one more thing." ”