To make honeycomb coal, you need to smash large coal blocks, then mix them with some yellow mud and water, and then use a ball beater to make honeycomb coal.

Although I was still young at that time and basically did not participate in the process of making honeycomb coal, I did have close contact with it. I touched the coal and my face turned black. My clothes also became black, and then I was beaten.

Han Cheng has a relatively good understanding of coal because he has experienced it up close.

That is why, when he saw it just now, Han Cheng was basically able to confirm that the thing in Yang Yao's hand was coal!

Han Cheng took it from Yang Yao's hand and held it in his hands to look at it.

The thing feels heavy in my hand.

It may be that the coal stone has experienced too much wind and rain on the surface, so the surface is not smooth.

Unlike the coal mined from the mine, it does not shine under the sunlight.

However, judging from the luster when you pick it up and the fact that it has been successfully dyed black on your hands, it can basically be identified.

Han Cheng stood here and watched for a while, then walked a few steps to the side, came to the side of a stone, and smashed the large piece of coal in his hand hard against the stone!

"Bang~"

With a muffled sound, the coal stone immediately broke into pieces.

The broken pieces of coal were scattered all over the ground.

One of the pieces of coal collapsed directly at Yang Yao's feet.

Han Cheng's sudden action completely stunned everyone.

People didn't know why the Son of God of their tribe suddenly changed his expression and became so angry.

Yang Yao and others, who had been smiling and excited just now, soon had their smiles disappear and stood there looking at a loss.

After a brief moment of confusion, they figured out the reason.

The reason is that the black stone that he and others brought back was not the coal that the Son of God said.

If this were not the case, how could the Son of God smash it to pieces?

Han Cheng didn't care about these.

At this moment, he was squatting on the ground, watching the broken coal stone carefully.

The broken part of the coal stone showed a familiar appearance to Han Cheng.

There is some brightness in the darkness.

This is the most important reason why Han Cheng suddenly threw the coal stone away.

Because he suddenly thought that the surface of coal stone can be weathered, but the inside will not be weathered!

When I opened it and took a look, I saw that it was indeed the case.

"This is a means of inspection! Now I can basically confirm that this black stone is coal!"

Han Cheng turned his head and saw the strange looks on everyone's faces. He immediately smiled and spoke to them.

After hearing his words, the people in the tribe immediately became relieved and happy.

"We will do one last test later to confirm whether this is the coal stone we want!"

Han Cheng said this.

Although it has been basically confirmed that this thing is coal, Han Cheng still wants to test it again for safety reasons in order to thoroughly confirm whether this thing is coal.

This testing method is very simple and direct, which is - burn!

…

Many people gathered around a blacksmith stove in the Tieshan residential area, with firewood burning in the stove.

Driven by the bellows, the firewood inside burns particularly vigorously.

“Clatter…”

As this sound was made, the flame in the stove suddenly became much smaller.

Han Cheng stood here holding a copper shovel, looking at the black gravel placed in the furnace with anticipation on his face.

The shovel in his hand was stained with some black ash.

"Increase the firepower!"

Han Cheng said, with some excitement in his voice.

After he finished speaking, the person squatting under the stove pulling the bellows immediately increased the frequency of pushing.

Puffs of air rushed into the stove.

Everyone held their breath, stood on tiptoe, and stretched their necks to look inside the stove.

Everyone was filled with curiosity about what the Son of God was doing.

In their impression, stones are something that cannot be burned.

Even things like iron ore and copper ore, which can be melted by flames, will not catch fire.

But now the Son of God told them that coal, a black stone, can burn.

Not only can it burn, but it can also burn extremely violently!

Coal is much more useful than charcoal made from wood!

Although they knew that the Son of God would never deceive them, when faced with such a strange thing that obviously went against common sense, they still wanted to take a look.

See if this stone can really burn as the Son of God said.

As the people pushing and pulling the bellows continued, thick smoke rose from the stove.

The air was filled with some familiar pungent smell.

Smelling the scent, Han Cheng couldn't help but smile.

That's right.

This smells like a strong pollution, but at the same time it also represents civilization and advancement, that's it!

What Yangyao and others found was coal!

As Han Cheng waited with a smile on his face, and as the people of the Qingque tribe who gathered around him waited anxiously, the smoke coming out of the stove became less and less, and the flames that could not be suppressed by the coal that Han Cheng poured in began to come out from the cracks in the coal.

And it's getting bigger and bigger.

This flame is somewhat different from the flame produced by burning ordinary firewood.

The flame produced by burning wood is relatively gentle.

The flame that came out at this time did not seem as big or high as the flame of burning firewood.

However, just by looking at it, one can feel the temperature it contains, which is far higher than that of ordinary flames.

Of course, this feeling can basically only be felt by people like Han Cheng who have seen coal burning in a blacksmith's furnace, and people who have used high-temperature cutting guns to cut steel plates in later generations.

After a while, the temperature inside the furnace continued to rise.

Many parts of the black coal have turned red and look like burning charcoal!

At this time, the dry firewood placed at the bottom of the stove and used as kindling has been completely burned.

All that was left in the stove were coals!

Such a scenario can fully prove one thing.

The thing is, what is burning at this moment is black stone, coal!

Seeing this scene, the people of the Qingque tribe around widened their eyes, feeling surprised and extremely happy!

This thing is really just as the Son of God said, it can actually burn!

Because of the successful burning of coal, which is considered a black stone by the people of the Qingque tribe, the entire Tieshan residential area of ​​the Qingque tribe has become extremely lively.

Everyone was filled with joy and happiness.

"…This coal was found near the Red Tiger Tribe…"

The person who came back with Yangyao said this to Han Cheng.

After learning about this, Han Cheng was stunned.

This news was too surprising for him.

Long before, he had thought about how great it would be if there was a coal mine in the Red Tiger Tribe.

But this kind of thought is just a thought in my mind.

Han Cheng himself felt that this was impossible.

After all, there are already so many mineral resources near the Red Tiger Tribe!

It is already very rare to have so many mineral resources gathered together, and he really doesn't dare to think too much!

However, he did not expect that reality would give him more than he had imagined.

It was completely beyond his imagination!

The Red Tiger Tribe is truly a Feng Shui treasure land!

Han Cheng sighed in his heart, and his desire to make the land where the Red Tiger Tribe lived the property of his own tribe became stronger.

It would be such a pity not to incorporate such a Feng Shui treasure land into one's own tribe!

“Clatter…”

Such a sound was heard again at an iron smelting furnace in the Tieshan residential area of ​​the Qingque tribe.

The iron smelter, holding a copper shovel, scooped up the coal that had been crushed into lumps and added it to the furnace.

Then he began to pull the bellows hard.

After it gradually starts to burn and is confirmed not to go out, start adding crushed iron ore into it.

These are the people of the Green Bird tribe, who began to experiment with using coal instead of charcoal to smelt iron ore.

Han Cheng had long thought of using coal to replace charcoal and make it the main fuel for smelting metals.

Now the tribe finally has coal.

Under such circumstances, Han Chengdu had to try as quickly as possible no matter what.

Therefore, after thoroughly confirming that this thing was indeed coal, the tribe began to use coal instead of charcoal for smelting.

The bellows are pulled, the fire burns, and the temperature inside the furnace continues to rise.

Later, orange-red flames climbed up along the furnace and finally reached the upper part of the furnace, radiating from the furnace with extremely high temperature.

Han Cheng watched all this unfold from the sidelines, waiting for the results to emerge...

“Squeak, squeak, squeak…”

There was a hissing sound, and a stream of red-hot molten iron flowed out from the furnace and fell into the earthen trough below...

Han Cheng sat here, looking at the data recorded in the small notebook and making comparisons.

After a long while, he finally raised his head.

But his brows were somewhat furrowed.

The reason for this is that by comparing some data between smelting iron with coal and smelting iron ore with charcoal, Han Cheng found that the efficiency of smelting iron with coal did not improve much.

This discovery made him very confused.

According to the properties of coal, such a thing should not happen.

After all, this is a good fuel that has been proven to be good in later generations.

Han Cheng sat here and kept thinking, but he couldn't figure it out.

Mao, Xiong You'er and other people from the Qingque tribe were puzzled as they looked at the Son of God who was sitting there staring at the small notebook in a daze and looked unhappy at all.

Some people couldn't help but scratch their heads.

It has been proven that coal, as a stone, can be used not only for combustion but also for smelting iron.

Moreover, compared with charcoal, the same amount of coal will burn longer.

More importantly, coal is easier to obtain.

According to people who returned from the Red Tiger Tribe, there are many of these black stones there.

You just need to dig it out, transport it to your own tribe and burn it directly.

Unlike charcoal, it requires many processes before it can be turned into a finished product for iron smelting.

Shouldn't we be extra happy that our tribe has obtained such a good thing?

Why doesn't the Son of God look very happy?

Could it be that the Son of God is still not satisfied with coal?

After this thought came to their minds, Mao and the others were a little dazed for a moment.

However, thinking about the Son of God's daily behavior, several people were basically certain that this was most likely the truth of the matter.

But it is precisely because of this that several people lose their minds like this.

The Son of God is the Son of God, and his vision is incomparable to those of us!

Under the stunned and admiring gazes of several people, Han Cheng stood up from the stone he was sitting on, began to wave to Mao and the others with a smile, asking them to come over and explain things to them.

This is certainly not because Han Cheng has figured out the connection, but because he feels that the most important thing now is to arrange people to go to the Red Tiger Tribe to dig and transport coal here.

Although the coal at this time did not achieve the desired effect, it could still be used.

After making a comparison with charcoal, under the current circumstances, it is still much more cost-effective to dig coal from the Red Tiger Tribe and transport it to the Tieshan residential area than to cut wood and make charcoal.

As for the problem that the efficiency of coal for iron smelting is not as high as you imagined, you can think about it and consider it while transporting coal to your tribe.

This choice is the most cost-effective for the current tribe.

“…Go call a team of people, bring weapons, backpacks, copper shovels, copper hammers and other tools, and let’s go to the Red Tiger Tribe to dig coal!”

Han Cheng explained to Mao and others.

Originally, Han Cheng would have just not gone on this trip.

However, this is the first time that coal has been officially mined, and people in the tribe are not familiar with it.

Han Cheng had no idea where exactly the coal was stored in the Red Tiger Tribe and how much was stored, so he finally decided to take everyone to the Red Tiger Tribe to conduct a personal survey.

Only when you have a general idea of ​​all these things, can you proceed with the many things that follow.

Of course, in addition to these, Han Cheng also has some other plans.

This matter is related to coal, but also to the future development of his own tribe and the Red Tiger Tribe.

It is a very important move.

It is also quite sophisticated.

Han Cheng was a little worried that the rest of the tribe wouldn't be able to do it well, so he wanted to do it himself...