Chen Feng couldn't wait for Cai Jianxing to throw the pine wood into the charcoal kiln, and then set it on fire.

The technical content of this life is still a bit high, but Chen Feng still decided to observe it himself.

Whether the fire can't be burned or the fire is too burned, you have to control it yourself, although Cai Jianxing's IQ is also quite high, but he is still not qualified to do this job.

There are many types of charcoal, which can be roughly divided into four categories: white charcoal, black charcoal, activated carbon, and machine-made carbon.

The main use of activated carbon is to purify the air, and although the machine-made carbon burns very well, it is something that Chen Feng will never make.

Therefore, Chen Feng is to choose between white carbon and black carbon.

Chen Feng decisively chose white charcoal.

First of all, Chen Feng has the ability to make white carbon and black charcoal, so the comparison is a cost performance.

The characteristics of black charcoal are that it is easy to ignite, and the disadvantages are that it is easy to explode, not resistant to burning, and has smoke when burning.

The characteristics of white charcoal are that it has a long burning time, no smoke, no pollution, a large proportion, and a metal steel sound when percussed;

It can be said that black carbon has no advantages at all except that the ignition point is lower than that of white charcoal, including appearance.

After all, one white covers ten ugliness.

Compared with black carbon, the only disadvantage of white charcoal is that it is easy to get wet.

Chen Feng smiled, here, if you want to let the white charcoal get wet, unless you throw it into the water or get exposed to the rain in vain, how can it be possible?

Chen Feng asked Cai Jianxing to carry a few buckets of water in advance and splash them on the ground, and the originally slightly dry ground suddenly became wet.

Then Chen Feng asked Cai to pick up all the wet soil and put it in the frame.

Cai Jianxing forgot to bring a shovel, so he could only use his hands to grab the soil very hard, he couldn't understand, what did the boss want to grab the soil for?

Chen Feng walked to the charcoal kiln and observed carefully, to be honest, the smoke inside was very choking, and even a man like Chen Feng, who had a resistance of as many as six points, couldn't stand it a little.

So Chen Feng had to take a deep breath and watch the situation inside the kiln through the small vent.

It can be seen that the wood in the kiln is a black image, and it seems that the carbonization is quite smooth.

But Chen Feng still decided to let the wood simmer in the kiln for a while to make them react more. Because he is lazy, he is too lazy to remake the uncarbonized wood, he would rather lose more wood, as long as it is not a big fire.

Chen Feng waited patiently for another half an hour, and then ordered Cai Health Care to block the vent.

Although there will still be some air entering the charcoal kiln through the gaps, this air is not enough to burn.

After making sure that there was no open flame inside, Chen Feng asked Cai Jianxing to pull out the wood with two branches.

That's why Chen Feng deliberately cut the wood into small pieces, in addition to making it carbonize faster, it will also be more convenient to take out.

The moment he took it out, Chen Feng asked Cai to cover the moist soil directly onto the wood. Poor Cai Health Care is busy before and after, and he can't wait to use one body for two!

Although there is no open flame in the wood, the residual heat is still there, and as soon as the moist soil is covered, it immediately makes a sizzling sound.

When the wood is carbonized in the kiln, it is taken out of the kiln while it is hot, and then the method of extinguishing the fire with wet sand is called the extinguishing method outside the kiln.

During the extinguishing process, the charcoal is calcined in contact with the air, and the outside of the charcoal is oxidized, and the resulting white ash is attached to the charcoal, which is called "white charcoal".

White charcoal is much harder than black charcoal, and there is even some metallic texture when knocked on.

It's like those silver dollars in the Republic of China, pinching it with your fingernails, blowing the cross-section, and listening to it with your ears, there will be a metallic sound.

But no matter how good it looks like, you still have to try it to find out.

Chen Feng directly experimented with the effect of white charcoal on the spot. It's a bit difficult to ignite it, but once it burns, it's quite unstoppable.

Chen Feng likes the characteristics of white charcoal very much, if it doesn't make a sound, it is a blockbuster, and it is durable and strong, awesome!

The fuel hurdles are all out of the way, and then there's the bellows.

In the past few days, Chen Feng has also asked Cai Health Care to make a few models in his spare time, but these are just shapes after all, and they will always leak when they are plugged in.

It can't form a pressure difference!," Chen Feng thought wistfully.

Wait a minute...... Air pressure difference!

Chen Feng suddenly opened his mind, and when it comes to the air pressure difference, one thing will come to many people's minds: syringes!

Why can the syringe absorb liquid? It is because when the syringe is extracted, the external force forces the volume of air in the syringe to increase, so that the pressure in the syringe becomes smaller, and a pressure difference is formed between the outside atmospheric pressure.

How can you create an environment with differential pressure?

Answer: Impenetrable.

You can see that there is a black plastic piston inside the syringe, which is used to block air, so you need to push the syringe a little harder, precisely because of the pressure difference.

Why did I make so many models before, but none of them really worked?

It's because I ignore the basic principles of physics!

Now, the theoretical problem has been solved, but the practical problem has come again, and this guy Cai Jianxing is notoriously careless!

It's okay for you to ask him to make something that isn't very accurate, as long as he can use it anyway.

And the bellows, you can't have holes! Or rather, the holes have to be very small!

Otherwise, it will leak after one thrust, who can withstand this?

Chen Feng also knew that this thing was a difficult challenge for Cai Healthcare, but there was no way, it had to be done!

Chen Feng told Cai Health Care that as long as he can make this bellows tightly, the matter of opening a harem will not be as familiar as you.

As soon as Cai Jianxing heard the promise made by the boss, his two little eyes lit up in an instant like a light bulb, and he opened the harem casually!

What a tempting promise! No, for his future happy life, this monkey king fights!

Cai Jianxing's eyes burned with endless fighting spirit, for the harem, for the sake of the female monkey, I must help the boss to do this thing!

In fact, there is no gap, as long as the heart is not flustered and the hands are not shaking, it is not too difficult to take your time step by step.

It's just that it's a little too difficult for monkeys with frizzy nature.

Fortunately, Chen Feng thought of a plan, there must be a brave man under the heavy reward, and he used the temptation of the harem to tempt Cai Jianxian, and the little monkey would definitely not be able to resist it.

Sure enough, I saw Cai Jianxing crouching on the ground very carefully, splicing wooden planks one after another.

In the past, even the gaps in the wooden boards spliced on the bellows were sometimes half a finger thick.

The current bellows gap is much the same as the bellows used by normal humans.

You never know how desperate a monkey will be to open a harem!

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