I saw Hu Changan take out a small dustpan from his pocket, then put a little coal in it, walked to the edge of the stream, and began to shake up and down.

Suddenly, everyone looked like they wanted to laugh but didn't dare to laugh, not to mention how hard it was.

I didn't expect this little young master to really wash this black thing in the water, did he want to wash this black thing white?

It's just childish and ridiculous.

Hu Changan ignored the strange appearance of everyone.

Seeing that the time was almost up, Hu Changan fished out the dustpan, took the wet coal on the top layer aside, pointed to the sand and gravel at the bottom and said to everyone: "Everyone, what we need is just a layer of black things on the top." ”

"It's called coal, and it's an excellent fuel, whether it's used for home heating or industrial production."

"Freshly mined coal contains a certain amount of impurities such as dust and gangue."

"If it is used directly, it will not only lead to a great reduction in the efficiency of coal combustion, but also produce harmful substances in the combustion process and cause pollution to the environment."

"Through the method of water washing, the dust in the raw coal can be effectively removed, and the coal and gangue can be separated by upsliding up and down, so as to obtain relatively pure coal."

"There is a difference between the density of coal and the density of gangue, if you put them together in running water and turn them up and down, the coal will float on top and the gangue will sink below, so that the coal and gangue can be separated very well."

Hu Changan also tried his best.

After all, there were no large-scale mechanical facilities in ancient times, and coal could only be preliminarily purified through this primitive manual method.

After listening to Hu Changan's words, everyone felt a little foggy.

This may sound reasonable, but how do you prove that they are true?

They had only seen anyone chopping down wood for fuel, but they had never seen anyone using such a black thing for fuel.

This strange thing, can it work?

And is the washed coal really stronger than the unwashed?

Looking at everyone's puzzled eyes, Hu Changan smiled slightly.

Hearing is false, seeing is believing. I happen to have time now, so let him show it to you.

In autumn, Yingtian City was very windy, and after a while, the layer of wet coal washed out by the water showed signs of drying.

Hu Changan ordered the overseer to bring a fire breaker, take out a small pile of washed coal and unwashed coal, and set them on fire.

At first, there was no movement in both piles of coal.

But as time passed, everyone saw that the inside of the two piles of coal burst out with red light.

Someone curiously stepped forward to touch it, and was suddenly burned by a spirit.

Could this be fire?

Hu Changan looked at everyone's shocked eyes, smiled and picked up a branch from the ground and put it into the black and red coal pile.

When he pulled the branch out, a flame rose from the branch.

When everyone saw this, they couldn't help but be shocked.

Oh my God, it's fire!

This shows that this black coal can indeed be used as a fuel!

What was not worth mentioning in the eyes of everyone is now like a beautiful thing to shine.

The young master is really magical!

This fuel was the first to be discovered by the young master!

Outstanding!

Just when everyone exchanged shocked glances with each other, Hu Changan smiled again and said, "Take a closer look, what is the difference between these two fires?" ”

Everyone looked closely for a moment, and sure enough, they noticed a difference.

I saw that the pile of unwashed coal, the smoke from the combustion was obviously relatively large.

Someone curiously stepped forward to smell it, and suddenly coughed continuously.

And the pile of washed coal, although there is also soot, but the soot is obviously smaller than the unwashed pile.

Everyone looked at Hu Changan and couldn't help but be amazed.

What is in the young master's mind, how can he even come up with such an awesome method?

They didn't know that this thing could be used as fuel, and the young master knew how to purify it.

is worthy of being a young master, but he is better than these rough people!

The people who had ridiculed Hu Changan before were ashamed of themselves.

He couldn't understand the young master's approach, he was simply too stupid, okay?

The young master is such a talent, he must have a reason for doing things!

Everyone looked at Hu Changan's eyes, shocked and admired.

Hu Changan smiled slightly, and ordered someone to bring a sack of small dustpans and distribute them to everyone one by one: "Everyone, please wash the raw coal mined during the day into coal, and then put it here to dry in the open air, and then put it in a frame and stack it, and I will send someone to transport the coal away at that time." ”

In fact, Hu Changan wants to make honeycomb coal directly here, but the current steel output is too low to make a mold for honeycomb coal.

Hu Changan had no choice but to give priority to the Ministry of Industry and raise the steel output first.

After listening to Hu Changan's words, everyone hurriedly responded in succession.

After this experience, Hu Changan's image in their hearts became more and more lofty.

In the eyes of these workers, Hu Changan is simply Lu Ban alive.

After arranging the work on the coal side, Hu Changan left here satisfied.

With coal, the Ministry of Industry's ironmaking workshops can be put to life! He's going to oversee it.

However, in the dark, there is a pair of eyes, staring at this place.

......

Ying Tiancheng, Li Shanchang's mansion.

After listening to the spies' report, Li Shanchang narrowed his eyes.

Good guy, I didn't expect that Hu Changan hadn't stumbled before Hu Changan, and Hu Changan came to give him a handle.

Recruiting villagers in nearby villages and distributing iron weapons to arm them is simply a proper rebellion.

Li Shanchang smiled slightly.

It seems that Hu Changan, this kid, is afraid that his good days are coming to an end.

You must know that Zhu Yuanzhang first hates corrupt officials, and the second hates rebellion.

Who is sitting on the dragon chair who is not worried about the rebellion of a courtier?

Once the rebellion is successful, none of the royal family of the previous dynasty can escape.

If you're lucky, you'll be confined to death.

If you are unlucky, you will be put to death.

Even if you are unlucky, you may even be tortured to death.

Even if the rebellion fails, the people will be miserable.

Therefore, no matter who is the ruler of all dynasties, they must try their best to strangle the rebellion in the cradle.

Whether it is to control the circulation of iron tools among the people, or to prohibit private casting of iron tools, piles and piles, it is all to prevent rebellion.

Once weapons and armor are found in the minister's home, no matter how powerful the minister, he will be executed on the spot.

Even the simple discovery of weapons will be executed, let alone directly recruit villagers and issue them with iron weapons.

Li Shanchang had reasonable grounds to suspect that Hu Changan was secretly training troops on the barren mountains of Gaochun County.

Li Shanchang's eyes were cold.

Hu Chang'an, Hu Chang'an, there is a road in heaven that you don't go, and there is no door to hell.

Today is the death day of your Hu Changan!