Needless to say, Zhou Yu's eyesight is not to mention the sharpness, the perfect blade alone is already stronger than the Shu weapon, and there is a deep blood groove engraved on the knife body, the lines of the blood groove are like a poisonous snake, and the fangs are the sharp tip of the knife, which makes people shudder when they see it.

The metallurgical technology of this era is still at a very low level, even if the steelmaking technology is the strongest in Shu, large-scale smelting can only forge low-carbon steel with very low carbon content, the toughness of this steel is about two percent stronger than pig iron, and the steel called Shu by the outside world, each workmanship is completely refined through thousands of times of building, the carbon content has increased a lot again, and the toughness is about sixty percent stronger than pig iron, but it is far from perfect.

The iron knife produced by this system is made of carbon steel, and its toughness has reached the most perfect degree of steel, and the performance is twice as strong as ordinary pig iron.

"Let me try how sharp this knife is."

Zhou Yu pulled out a knife from the waist of the guard beside him, and with a slight force, the two knives collided, and suddenly the knife was cut out of a one-inch-deep hole, and Liu Yuetian's blade was not damaged at all, Zhou Yu raised the iron short knife again, this time using fifty percent of his strength.

"Bang dang!"

The guard's long knife snapped off at the sound, and half of it fell to the ground.

"Good knife, really good knife, the quality of this knife, I'm afraid it is no less than a divine weapon, good knife, good knife!"

Zhou Yu kept stroking the blade of the knife, and he really couldn't put it down.

"A good knife is a good knife, but the amount of pig iron is very large, and it costs two hundred catties of pig iron to create such a short knife, so I asked the Metropolitan Governor if he had pig iron to buy."

Liu Yuetian asked.

A piece of iron short knife only costs Liu Yuetian five meritorious points, costing thirty pounds of pig iron, now Liu Yuetian does not lack meritorious value, after occupying Tianshui, Liu Yuetian ordered tax exemption, grain, Tianshui more than 200,000 people, everyone's loyalty increased by more than ten points on average, just a few days of work to make Liu Yuetian's meritorious value increased by more than 200,000, more than 200,000 Tianshui people almost per capita.

This is actually not much, and in the following time, as these policies began to be implemented, the people of Tianshui enjoyed real benefits, and their loyalty began to gradually improve, even if Liu Yuetian left Tianshui, the system could prompt thousands of merit points every day.

Along the way, Liu Yuetian first exchanged 30,000 rice seeds for the Bodhidharma Patriarch in Songshan, and then built a thousand crossbows for the ancestor Taishou in Luoyang, exchanging 50,000 rice seeds, which adds up to 90,000 merit points, but now there are more than 120,000 merit values in the system, and the iron short knife only needs five merit points, and one thousand is only 5,000 merit points, and it costs 120,000 merit points to obtain a large amount of pig iron, and this transaction is still worth it for Liu Yuetian now.

"Two hundred pounds of pig iron? Not much, not much, if such a blade is put on the market to sell, I am afraid that it can be sold for hundreds of taels of silver, how much is two hundred catties of pig iron? It's just a dozen taels of silver, it's worth it, it's worth it! ”

Li Jiancheng replied on the side.

"Oh, can you sell it for so much money?"

Liu Yuetian pretended to be curious.

"Of course!"

Zhou Yu also nodded and replied.

"That's great, I can exchange this short knife for pig iron, a short knife for three hundred catties of pig iron, how about it? Can this be done? ”

Liu Yuetian looked at the two opposite.

"What? Your Highness, you said that this short knife can be mass-produced? ”

The two were startled.

In the eyes of the two, this kind of weapon is sharper than Shu weapons, how much manpower does it take to create one, and now I heard that it can be mass-produced, which is a big thing.

"How many can Your Highness sell?"

Both asked at the same time.

"Of course, it still takes a lot of effort to make this kind of knife, but after a month, there is no problem in building a few hundred."

"Ahh

Is it okay to build a few hundred a month? Isn't this similar to a normal pig iron sword?

"Your Highness, are your words true?"

"Of course it's true?"

"Good, good, it's just great.........!"

Zhou Yu and Li Jiancheng were overjoyed, and they had already begun to calculate in their hearts.

In the era of cold weapons, there are many factors that determine the outcome of the confrontation between the two armies, the most important is whether the money and food are sufficient, then the strength of the two sides, as well as the ability of the commander, and there is also one thing is the quality of the weapon, which is beyond doubt.

Because in the final analysis, war is still a fight between people, it is a hard fight with knives and guns, when the number of soldiers on both sides is the same, you hold a wooden stick, but the other party holds a steel knife, how can this war be fought?

Now the princes of the Seven Directions are not acting in harmony on the surface, and some of them are still communicating with each other as if they were brothers, but in fact, they have been preparing for a long time, and they don't know when the war will break out, and any factor that enhances their strength is very important to everyone.

Pig iron is very important to everyone, but in fact, there is still a lot of stock in the hands of the princes of the seven parties, but the more as a strategic reserve, the better, but the treasure knife in Liu Yuetian's hand is not a few parties can have, once a certain force gets, it is not much, it can equip 5,000 people, then the combat power of this army is no less than that of 10,000 people, if these 5,000 people are elite soldiers, this is terrifying, enough to be used as one as ten.

Zhou Yu understands this truth, and Li Jiancheng also understands it, so naturally he can't let go of such a great opportunity.

"Your Highness, I, Datang, am willing to buy this treasure knife, the more the better, I will fly a pigeon to pass on my father to the king now, and let him prepare pig iron."

Li Jiancheng stood up and said, this is a great opportunity for him, as long as it is done, not only can the strength of the Tang Dynasty army be greatly enhanced, but also he can completely suppress his younger brother Li Shimin, and the possibility of becoming the king of Tang can also be greatly increased.

"Haha, don't worry, don't worry, sit down, sit down!"

Zhou Yu on the side laughed and patted Li Jiancheng.

"Just kidding, this is Dawu, it's Jinling, my territory can give you Datang an advantage?"

Zhou Yu smiled secretly in his heart, but he was also a little cautious.

Zhou Yu is not as reckless as Li Jiancheng, Liu Yuetian said that he was also very moved, but if you think about it, there are still many questions that have not been clarified, Liu Yuetian can take Tianshui, which proves that he is also a scheming person, what if he is talking nonsense here and wants to deceive the iron ore? Of course, the treasure knife in his hand is not fake, but it is also good to figure out the details of the other party.

"Your Highness, did you say that this treasure knife came from the hand of the Tianshui blacksmith?"

Zhou Yu asked quietly.