After getting up, Lu Bu only felt that yin and yang were in harmony and refreshed.

Under the service of Diao Chan and Zhang Ning, he got up and ate early, and after pondering for a while, Lu Bu was ready to meet Huang Chengyan and Huang Yueying.

It's been more than a month since I deceived people, and I've been busy with this and that, and I haven't had time to see them, which is really a very shameful thing to say.

By the way, there is also Hua Tuo......

Fortunately, I have excerpted some theories of Western medicine for Hua Tuo to see, and now Hua Tuo is studying with relish, and he can't theorize these yet.

Well, after going to see Huang Chengyan today, I have to meet Hua Tuo.

Soon, Lu Bu came to the house arranged for Huang Chengyan.

didn't let the doorman report, Lu Bu walked in directly.

Walking into the courtyard, Lu Bu found that Huang Chengyan was looking intently at the excerpts that Lu Bu gave him, modern physical chemistry and some basic knowledge of mathematics, and he was watching it with relish.

Hearing Lu Bu's footsteps, Huang Chengyan couldn't help but put down the book and stood up, arched his hand and said to Lu Bu: "I don't know if I am too guarded, I am far away, forgive my sins!" ”

Lu Bu said dissatisfiedly: "Mr. Chengyan, don't see the outside like this, okay?" ”

Then he said apologetically: "Mr. Chengyan, this month has been very busy, and I haven't been able to find time to visit, so I can't help but snub Mr., and I hope Mr. won't take it to heart." ”

Huang Chengyan couldn't help laughing and said, "Why did Lu Taishou say this? The achievements made by Lu Taishou in the past month or so are in the eyes of the old man, and Lu Taishou is a good official who really works for the well-being of the people! What is it to snub my old man alone? ”

At this moment, hearing Lu Bu's voice, Huang Yueying hurriedly ran out of the house.

Seeing Lu Bu, he was as excited as if he was something, and he couldn't help but throw himself into Lu Bu's arms all of a sudden, hugged Lu Bu's legs, and said coquettishly: "Brother Lu, it's been so long, you don't come to see Yueying, don't you hate Yueying?" ”

Huang Chengyan couldn't help but smile bitterly: "Lu Taishou, you don't know, this little girl is fine, so she went to your Taishou Mansion to inquire, but I haven't seen you all the time." It's been a month, this girl has been pouting and sullen, if you don't come again......"

Huang Yueying couldn't help but sniff: "Daddy! ”

Lu Bu couldn't help but say apologetically: "Yueying, Brother Lu said sorry to you, it's not that Brother Lu doesn't want to come to see you." I'm so busy that I haven't been home a few times a month. ”

Huang Yueying said understandingly: "Brother Lu, Yueying knows that you are busy, and Yueying is not angry with you. That's it, that's it, people really miss you! ”

Lu Bu couldn't help but stroke Huang Yueying's little head and said, "Okay, Yueying, now your eldest brother Lu is almost busy, can I come and play with you when I have time?" ”

Huang Yueying couldn't help clapping her hands happily and said, "Okay, okay, Brother Lu, you are not allowed to lie and lie to me!" ”

Lu Bu laughed and said, "How could Ben Taishou deceive a child? ”

Huang Yueying stomped her feet and said dissatisfiedly: "Brother Lu, people are not small!" ”

Huang Chengyan smiled beside him and said, "Lu Taishou, please sit down and talk." ”

Lu Bu sat down, and then Zhengse said: "Mr. Chengyan, it's good if you call me Fengxian, or don't call me Taishou!" ”

Huang Chengyan said: "At this time and that time, if the old man directly calls Lu Taishou's words, it will be inappropriate to spread it. ”

Seeing that Huang Chengyan insisted on calling himself too guarded, Lu Bu did not persuade him again.

Lu Bu said to Huang Chengyan: "Mr. Chengyan, I came this time to let Mr. preside over the steelmaking affairs, I wonder if Mr. is interested?" ”

During the Three Kingdoms period, the level of steelmaking was just beginning, because the technology and temperature were not up to standard, and the iron could not be fully dissolved into molten iron, and could only be fired into something like very soft iron paste.

Then put the pig iron into the iron paste, and constantly beat it, and remove the impurities in the steel little by little by hammering.

At this time, the highest process is called 100 steel, which means that it needs to be hammered nearly 100 times before it is finally formed.

A ten-pound piece of wrought steel, after a hundred refinements, can leave a maximum of two catties of weight.

Not to mention the waste of steel, the refining speed cannot be improved at all.

It is simply impossible to equip the army with a large number of steel-hardened weapons.

However, if you follow Lu Bu's method, the iron ore is dissolved at high temperature, and then the impurities such as sulfur and phosphorus in the molten iron are removed, and then a certain amount of carbon is added.

If you add more carbon, it is hard and brittle high-carbon steel, and if you add less, it is soft and stretchable low-carbon steel.

The steel refined in this way can be directly cast into weapons, and there is no need for such complexity and effort as forging steel.

If you want to dominate the world, it is essential to improve the level of steelmaking.

Therefore, Lu Bu was ready to hand over this matter to Huang Chengyan to do.

……

However, Huang Chengyan is obviously not very willing to do steelmaking.

Huang Chengyan couldn't help but say to Lu Bu: "Lu Taishou, what about steelmaking, in fact, you can leave it to someone else to do it......

The implication is that if you give it to him to do it, you will really bury talents.

Lu Bu couldn't help but smile and said, "Mr. Chengyan, in fact, steelmaking is not so easy. You know that now 100 steels need to be tempered before they can be baked, but if you can increase the furnace temperature, completely melt the iron ore into molten iron, and directly remove the impurities in the molten iron state, you can achieve the effect of 100 steels without 100 tempering! ”

"Also, by adding charcoal to the steel, you can change the properties of the steel. If you add more, the steel will be hard and brittle. Add less, and the steel will be tough. If you master this ratio, you can refine the most suitable steel for flexibility and hardness! ”

"You can acquire a lot of knowledge through steelmaking, and I guess Mr. Seihiko has also seen the basics of chemistry. Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine, neon. Argon, magnesium, aluminum, silicon, phosphorus, sulfur, chloride, argon, potassium, calcium. In these steels, there are sulfur and phosphorus. Does Mr. Seihiko know how to get these two elements out of the molten iron? ”

Hearing this, Huang Chengyan's eyes couldn't help but light up all of a sudden.

Lu Bu's book to Huang Chengyan is like pushing a door open in front of Huang Chengyan, and a new world is presented in front of Huang Chengyan.

The reason why Huang Chengyan is reluctant to accept the steelmaking thing is because Huang Chengyan can't wait to know and understand more about the new world.

But Lu Bu's words made Huang Chengyan feel that what he learned from books would always stay at the level of theory.

Only by hands-on practice and operation can you truly make these things your own.

Therefore, in the end, Huang Chengyan agreed to Lu Bu's request.

Seeing that Huang Chengyan agreed, Lu Bu couldn't help but be overjoyed, and then explained in detail to Huang Chengyan the various details of steelmaking.

Warehouses, blast furnaces, melting chambers, melt pools, furnaces, blast systems, etc.

There are many things, Huang Chengyan was difficult to understand when he heard it for the first time, and it suddenly dawned on him after Lu Bu's explanation.