The sky is vast and the dark columns of smoke reach the sky.

The smoke was emitting Chen Zheng's air-drying room. It was very simple, not even the walls, and there were only "pergolas" made of wooden shelves and wooden boards. Coupled with the steaming smoke in the "air-drying room", it seemed that it was bacon at first glance.

In fact, Chen Zheng’s creativity was borrowed from the smoked house that made bacon, but he made some changes.

In fact, the smoke is nothing else. It is Chen Zheng's widening and lengthening carbonization pool. Rows of wooden piles are built on both sides of the carbonization pool, and live beams cross the smoke pool and are mounted on the wooden piles.

Next, Chen Zheng spread two palm-wide wooden boards one by one on the wooden beam, leaving a gap of three fingers wide in the middle, then set up another beam on top, and finally covered it with hay.

Such a smoke pool with air leakage on all sides is completed.

It looks simple and simple, but in fact, it took Chen Zheng two days to make such a simple play.

The first is the ground temperature.

If the beam supporting the wooden board is too close to the ground, it will easily be burned over time, but if it is too far away, it will not be able to raise the temperature at all when the cold wind blows, and all the adobes placed on it will be frozen and cracked.

On the other hand, the height of the beams that lay hay has been adjusted countless times. If it is too high, the temperature will not be enough. The bottom of the mud bricks will be dried, but the top will be frozen and cracked. If it is too low, it will cause more grass leaves to fall on the still sticky adobe bricks, reducing the air tightness of the finished earth-brick bricks.

However, the project was completed in the end. Although it was a little later than expected, all the previous ideas were completed.

First, use the carbonization pool to make charcoal as fuel, and then use the waste heat of the carbonization pool to slowly dry the adobe bricks. When all the wooden strips in the carbonization pool are carbonized, the densely packed adobes above will be dried.

In order to make both sides synchronize, Chen Zheng had to constantly adjust the height of the wooden frame, and this was the fundamental reason why Chen Zheng spent two days.

However, this is the case with craftsmanship. It consumes time, energy and materials before it is explored. However, when it is explored, the subsequent production will be done strictly in accordance with the process flow, which is both worry-free and labor-saving.

This process that can improve efficiency to the extreme is generally called "standardization" and is one of the indispensable conditions for industrialization.

The carbonization pool can produce three or four tons of charcoal in about 30 hours, and nearly a thousand adobe bricks can produce. Including the time for burying, collecting and cleaning, it is exactly two days for one kiln of carbon and bricks.

Chen Zheng roughly calculated the dosage and consciously reduced the ideal blast furnace of more than 4 meters high to less than 3 meters, and the diameter dropped from more than 3 meters to less than 2 meters. After the volume decreased, in addition to the sharp reduction in copper output, time and material consumption were also greatly reduced.

There is nothing to say about building a blast furnace. It’s nothing more than cleaning up a piece of dry and flat land and using adobe bricks to build it online.

However, considering the weather, the ordinary stacking method is not applicable here because the mud as a caulking material cannot be dried naturally.

To solve this problem, Chen Zheng lit a pile of larger bonfires in the inner circle of the unformed "blast furnace", while six smaller bonfires were lit in the outer circle.

Of course, if only a few bonfires are used, the problem of inconsistent settling time of mud cannot be solved. Although this will affect the final airtightness and service life, there is no such solution. If Chen Zheng does not do this, there is no available blast furnace, so how can he talk about the blast furnace life?

Whether it is burning charcoal, burning bricks, or stacking blast furnaces, it can be said that even chopping firewood to make fire is a very physically intensive work. Since he decided to smel up copper, Chen Zheng has become exhausted every day.

If it were Chen Zheng's classmates, they would be out of breath if they were chopping firewood and moving bricks, and they would wipe the floor without any effort. According to Chen Zheng's workload, the blast furnace was built and they were exhausted and died of blood.

However, no matter how tired it is during the day, as long as you hold the pendant at night and dream of the blue light of the starry sea, you will be a lively young man early the next morning.

After working hard during this period, Chen Zheng clearly felt that his strength was getting more and more exaggerated. He had to breathe for a long time when he dragged a branch with a thicker wrist, and the thicker logs had to be moved with winches, ropes and sleds.

Now, Chen Zheng can easily carry a log that is more than three meters long. If this power is placed on the earth, it should be no problem to win a weightlifting champion or something.

Of course, as Chen Zheng's strength grew, his appetite also became larger and larger. Eating three or five pounds of fish for a meal was just a suffocation. Even if it doubled, it was just a full meal.

Time passed day by day.

As the food gradually decreased, the soil blast furnace built by Chen Zheng gradually took shape. In the end, a bullet-shaped adobe blast furnace three meters high was formed! Except for the strange square hot air ducts, other parts looked very similar to the small blast furnaces made by the soil.

Looking at his works, Chen Zheng was quite satisfied.

Connect the bellows and the cold air ducts, use putty mixed with large fish bone powder to make the air tight between the bellows and the cold air ducts, and finally install the wooden handrails and then all are completed.

At this time, the blast furnace was covered with charcoal layer by layer. The red copper mine square crystal collected by Chen Zheng many times was stacked in the center of the charcoal. Chen Zheng took a deep breath and threw the fire from the reserved inlet.

"Huh... I don't know if it can be done."

Although he has done so much work, Chen Zheng is still unsure. Can the connection between the cold air duct and the hot air duct withstand the changes in hot and cold? Can the cold air and hot air be fully mixed? Finally, after Chen Zheng's technical transformation, can charcoal of high quality reach a high temperature of 1,200 degrees?

All of this is still unknown.

If it weren't for the reserve of tons of fish, Chen Zheng wouldn't have dared to spend so long and so much energy to gain that vague possibility.

However, if you don’t fight, there will be no possibility.

Could it be that Chen Zheng would crouch in the snow cave, like a savage, go out early and come back late every day to find possible prey, and then starve to death in the snow cave one day until the snow melts in spring and leaves a highly decayed corpse?

Or if you fail to hunt, die in the mouth of some powerful monsters, it turns into a stinky piece of feces to nourish this strange land...

That was not what Chen Zheng wanted.

Especially when he discovered the magic of the strange fish crystal, Chen Zheng didn't want to die on this land.

He wants to go back and look good to those who pursue him.

After so many days, he has already thought about some things very clearly.

The first priority is to survive.

Live and wait.

Wait for those who hunt him.

Don’t they want this pendant? Can’t they transcend time and space?

As long as you continue to live, sooner or later, the forces that pursue him will send people again, and by that time...

...Chen Zheng wants to tell them who is the prey!
Chapter completed!