For the next period of time, life was very peaceful, and a wind of martial arts training arose in the entire Tianhuo tribe, and Chu Nan picked out the martial arts secrets that he thought could be taught.

During this period, he also let the Drill Sky Monkey and the poisonous scorpion feed Bai Fumei, so that Bai Fumei could grow rapidly.

In order to obtain a complete martial arts cultivation theory, Chu Nan entered the dream system again, exhausted all the power of faith he had accumulated, and finally copied the meridian theory and acupoint theory that he had summarized in his previous life.

For these things, it can be said that they almost died before they were materialized in the real world, fortunately, there are two perverts Bai Fumei and Bai He, who can never forget it, if they are ordinary memories, I don't know how many times they have to be materialized, so that they can record all the acupuncture points and meridian distribution.

"Do you all remember?" Chu Nan asked the two of them to memorize separately, and then confirmed and checked each other, once there was something wrong, he entered the dream realm to check, so the power of faith consumed was much smaller.

"We've all remembered, Brother Chu, let's verify it next." The two women nodded.

What made Chu Nan happy was that the two of them checked it, it can be said that none of them made a mistake, which made Chu Nan completely shocked once, the bronze statue that records the meridians and acupuncture points of the human body in the legend, most people should have heard of it, the scientific name seems to be called the bronze statue of acupuncture, which can be said to be densely packed with acupuncture points and complex meridian distribution, if you want to write it down in just a few minutes, it is basically impossible, but these two little girls have written it down meticulously.

Now that they have all memorized, the next thing is much simpler, immediately let the people of the Ministry of Industry cast a bronze statue, and Chu Nan adjusted it according to the height of the people in this world and made a simulated bronze statue.

The wisdom of the ancients should not be underestimated, Chu Nan only pointed out a few words, he comprehended the essence of casting, and also found the soil suitable for making a model, the bronze statue was quickly made, and after polishing, the surface became extremely smooth.

"Well, the bronze statue has also been polished, do you remember the bronze statue I showed you? You draw the meridians and acupuncture points on it according to the scale, and then we verify them one by one to see if it's true. Although he made a bronze statue of acupuncture, Chu Nan felt a little weak in his heart.

This world is not the other world, although they are all human beings, and the approximate proportion is also right, who knows if the human beings in this world have meridians and acupuncture points, but Chu Nan is not particularly afraid, as long as there are people, it is a matter of doing a few more experiments.

As for who to find to do the experiment, Chu Nan didn't care at all, because of the different concepts, Chu Nan couldn't watch people do experiments, so he could only hand them over to others, in primitive society, slaves had no status, although Chu Nan often instilled civilized ideas in them, but it was still very difficult for them to accept it.

When there was nothing to do, Chu Nan came to the place where the iron was smelted, where many blast furnaces had been built, and after improvement, there were fewer and fewer honeycombs on the iron pieces that were practiced, and the most important thing was that an open-pit coal mine was found not far away, so to speak, God gave him face, and the things he wanted were placed in front of him one by one.

Not only coal, but now even limestone has been found, which makes Chu Nan very happy, with limestone, not only can you get hydrated lime, but also can train out cement.

What is cement? It is definitely the best choice for building houses and paving roads, once it can be refined in large quantities, Chu Nan can build an extremely strong city wall, and it can also improve the traffic conditions in the territory, making it much easier to transport goods.

As for the steam engine, although Chu Nan knows the principle, he can't do it with his current ability, at least the level of forging steel can't be beaten, and Chu Nan doesn't want to interfere too much, he only provides ideas, instructions on how to do it, and the specific things to do still have to be handed over to the clansmen.

In this way, the clan can grow better and faster, if he has to do everything himself, once he leaves, the Tianhuo clan will basically be finished.

Looking at the blast furnaces of iron-making, Chu Nan was very excited in his heart, if he hadn't experienced this kind of thing, it would be impossible to experience it, watching the clansmen go from having nothing to now being able to smelt steel, and the growth rate was far beyond Chu Nan's expectations.

Carrying things and adding coal to the blast furnace are all some aliens, the Tianhuo people are watching from the sidelines, pointing and scolding from time to time, and there are a few overseers, holding rattan sticks in their hands, and they will give a few whips to see who is not pleasing to the eye, in addition to these people, there are also some young people, they hold some small books in their hands, all of which are made of yellow paper made in the clan, and they are writing on them with charcoal pens in their hands, as if they are recording things.

"Chief? Are you here? The young man who was looking down to record things suddenly saw Chu Nan, first stunned, then showed an excited look, and stammered a little.

"Well, you've worked hard, what do you remember?" Chu Nan took the notebook and flipped through it.

"What I remember is the things in ironmaking, when the filler, when the iron ore can be turned into molten iron, the temperature change, and some small changes in the middle, sometimes some other ores will be added to the blast furnace, and what changes in the molten iron that are practiced should also be recorded." When the young man said this, his nervous emotions disappeared, and he talked eloquently, and Chu Nan was stunned when he heard it, and he felt that he had become a layman.

"Okay, very good, do a good job, you are the hope of the future of the Tianhuo Clan, the more you know, the stronger our Tianhuo Clan will be." Chu Nan patted the young man's shoulder and encouraged.

"It's the chief, and I will live up to your trust." The young man was excited, raised his hand and gave a military salute, and then laughed silly.

Chu Nan walked around the ironworks and found that all the people in it were busy, surrounded by hundreds of warriors on guard, and outside, there were many aliens who were busy building the wall.

The ironworks are the foundation of the development of the Tianhuo Clan, in case a group of Tyrannosaurus rex comes, tossing it here, it will be troublesome, and it can be regarded as a precaution, after all, the giant vertebrae have been here, and it is not impossible for the Tyrannosaurus rex to come.

"Chief, you're here? I've got something to report to you. The stone led a dozen young people over and said with a smile.

"What's the matter? It should be a good thing to see how happy you look, right? Chu Nan said with a smile.

"You guessed it, after a period of experimentation, we have developed a new kind of steel, well, according to the chief, it should be an alloy, very hard, and very tough, if it is used to make weapons, hehe, it is much more powerful than the Tang knife that the chief originally built." The stone's words made Chu Nan's heart skip a beat.

"Alloy? Did you really let these people make a powerful alloy? Sure enough, you can't underestimate anyone. Looking at the dozen or so people in front of him, he said secretly in his heart.