Everyone saw that Liu Cover's face was firm, and his words were full of confidence, but they did not refute again.

Iron smelting and casting are already in charge of special craftsmen in the army. Wenchen military generals, in this troubled times, most of them are proud of their wisdom or going into battle to kill the enemy, but it is this weapon, because the major forces rush back and forth, the city frequently changes hands, not only has not been effectively improved, but it is inferior to the prosperity of the Han Dynasty decades ago.

As early as when Liu Feng was in Xinye, he frequently discussed the improvement of weapons with those subway craftsmen, and looked for suitable places in the surrounding counties for experimentation.

After understanding the production of weapons in Liu Bei's army and exploring the iron-smelting technology of the Han Dynasty at this time, Liu Feng had already learned that in fact, in the Eastern Han Dynasty, the iron forging and steel-making technology were mature, but the army was still dominated by cast iron weapons at this time.

Therefore, after Liu Feng thought about it, he decided to replace the hundreds of soldiers under his command with wrought iron weapons.

But from Xinye to Fancheng, because Liu Bei and Zhuge Liang are on the side, Liu Feng has not been able to put this matter into practice, Jingzhou was originally a rich place, and many places have the most advanced blast device in the Eastern Han Dynasty: water drain, when used properly, it can greatly save manpower and speed up iron-smelting technology, and now Liu Feng went to Jiangling alone, and the first thing was to send a powerful blacksmith to find out if there was a suitable place in Jiangling City, and to complete the transformation of the hundreds of personal soldiers under his command.

Fortunately, Jiangling is an important town in Jingzhou, and there are several blast furnaces used for iron smelting in the city, and water rows are also not a problem.

Since boasting about Haikou in front of everyone, Liu Feng naturally can't slack off, once his promise can't come true, then if he wants to vigorously develop these crafts in the future, it will not be as smooth as today, the generals are quite scoffing at these craftsmen, if Liu Feng can no longer teach him to see immediate results, how to change the status quo?

At this time, Liu Feng has more than ten blacksmiths, who have been fighting for more than ten hours in the iron-smelting land of Jiangling, and the steel knives carried by these three hundred people, Liu Feng all want to build them with the method of 100 steelmaking, so that its sharpness, toughness and durability have reached a new standard, although it cannot be compared with the Qinghong sword he wears, but it is also stronger than the cast iron knife he brought before.

With Liu Feng's existing more than ten blacksmiths, if he wanted to forge a hundred steel swords according to common sense, it would take a lot of time to complete.

But at this time, Liu Feng wanted to use this large-scale blast furnace and water drain to remove the impurities and carbon in the molten iron in advance, so that it could achieve good results without going through a hundred refinements.

Although Liu Feng knew the principle, after all, he was in the Han Dynasty this time, whether he could really reach the standard of 100 steels after several forgings as he thought, Liu Feng was not very sure in his heart, so he was very anxious in his heart when he observed the repeated tempering of those blacksmiths on this day.

All kinds of iron-smelting technology in the Han Dynasty have been very mature, and what is lacking is just to apply it more widely, and the first step of this application is to pay attention to blacksmiths.

Finally, after a long time after the night had fallen, a blacksmith who was tempering finally came with good news, he had repeatedly tried and adjusted various temperatures, and finally succeeded in refining three steel knives of stable quality in a row, and their sharpness was completely defeated in the test with ordinary war knives, and each steel knife, it only took half an hour to quench, in other words, what Liu Feng asked before, this person has already found the trick.

Seeing this situation, Liu Feng hurriedly gathered all the blacksmiths in one place, sent the successful person to share his experience and discuss, and discussed with everyone, because these blacksmiths were originally refugees who gathered in Jingzhou from all over the world, and they did not expect to be able to return to their old business again in this life, and Liu Feng was so reused, it was something that they never thought of.

When Liu Feng fled from Xinye, he protected these blacksmiths and their families in his personal army, so until this time, these blacksmiths he recruited did not see any casualties, and this incident alone made them all ask for Liu Feng's three military lives, racking their brains to meet the standards proposed by Liu Feng, and finally there was a light at this time, which made these craftsmen very excited, and their mouths were full of words to see if they could improve it more perfectly.

Seeing this situation, Liu Feng felt a breath of turbidity in his heart, knowing that in this way, in just one or two hours, these pig iron could be turned into a hundred steel knives, and the more than 300 personal soldiers under his command would definitely be fully equipped tomorrow.

Sure enough, in the middle of the night, Liu Feng was rewarded, those blacksmiths had already completed 400 100 steel knives, and the temperature and quenching environment were similar, so these 400 steel knives and Liu Feng's requirements were average, and the quality was very close.

In the early morning of the next day, Liu Feng still summoned all the generals under his command to the school field, and at this time, all the three hundred soldiers under his command were already standing in the field, waiting for Liu Feng to inspect.

"Wait for you to take off the sword and shield you are wearing!" When he arrived at the school, Liu Feng didn't say a word, and taught the sergeant to put all the knives he was wearing on the ground.

Then, Liu Feng ordered the blacksmith to move all the 300 steel knives that were made overnight last night to the school yard, and put a steel knife in front of each of the 300 soldiers.

As soon as these soldiers saw this steel knife, their eyes lit up, the knife they used before was a cast iron knife, and the blade was polished, it would be slightly rusty if it was placed for a long time, and the blade was quite brittle, and the blade would be damaged under several chops, and these steel knives were very eye-catching at first glance, and there was no black iron appearance, shining in the sun, the cold light was shining.

"Pick up the new soldier's blade and see how it differs from the one you held before?"

When the three hundred soldiers heard this, they all picked up the steel knives on the ground, and as soon as they started their hands, they felt that they were very light, and the blades were much sharper than the knives they had held before.