Honghuang, I am engaged in science and technology in the Wuzu

“Hiroshi, you’re back, I have something to find you.” Fang Hao walked into his room, but found that Forgiveness was here.

It seemed that she was looking for herself for something.

“Excuse me, what are you looking for me for?” Fang Hao was a little surprised to see her.

She is the existence with the highest IQ in the tribe, one of the three thousand human races created by Nuwa herself, and Fang Hao actually has little contact with her.

“I predict that in two months winter will come, a huge snowstorm will fall into the forest, and the tribe will be severely tested, will you be able to resist this disaster?” Shu asked, with a hint of concern in her eyes.

“Snow disaster? How bad is this disaster? Fang Hao was stunned and asked, last year also passed the winter, it didn’t seem very dangerous.

The environment of the flood is different from the earth, and in the days of living in the flood barren land, he saw a lot of violent storms, which were very fierce like pouring, far from being comparable to the storms of the earth.

Fortunately, the plants here are very tough and can withstand the water supply, and if like the plants of the earth, the entire forest will be washed away by the flood.

Sometimes, the sky will fly over the big birds tens of kilometers long, and the light inside the Redstone Tribe will become very dim, and those flood desolate aliens almost cover the entire sky, which is very terrifying.

This kind of big bird Fang Hao is not afraid, but the demon beast cultivated by the Heavenly Immortals, and most of them have no wisdom, and they are often a source of food for the Wu clan, and one can make a tribe eat for months.

But for the weak Terrans, this creature is definitely a giant existence.

“This snow disaster is unusual, three hundred years ago, it was also a huge snow disaster rain that fell on the Redstone tribe, for half a year, in order to survive, the tribe had to brave the cold to find food, because of the abnormal cold, the Redstone tribe was very serious in attrition, most of them died, even the strongest warriors of the tribe died in this disaster, this time it was the same omen.” Shu recalled the past and said with some sadness.

Fang Hao nodded.

“The forest will be covered with ice and snow, if you have no choice, we will have to risk our lives to migrate, hoping to have time to move out of the snow disaster range, I heard that the lower reaches of this river are relatively warm, but there are many dangers, and there are many fierce beasts.” Shu said worriedly.

“Don’t worry, we don’t have to relocate, I’ll figure out a way.” Fang Hao frowned and said to Shu, the snow disaster was nothing more than food and heating, and many solutions quickly emerged in his heart.

Looking at the worried expression, Fang Hao was a little touched in his heart, she was the ancestor of mankind and the ancestor of her previous life, she was dedicated to working hard for the tribe, and she didn’t know how much pressure she endured.

Under so much pressure, she is also much more mature than ordinary people, and looks forty or fifty years old, which shows that she does not know how much she has suffered.

During this time, Fang Hao learned many of her advantages with Hexiang, especially her extraordinary wisdom, unforgettable, excellent comprehension, and proficient in divination.

Perhaps there are many such excellent Terrans in this era, but if there is no one to guide, they will all die in obscurity in the long river of time, in fact, they are the most precious treasure of mankind.

……

After leaving, Fang Hao began to think about the snow disaster, in fact, with his cultivation, a snow disaster is nothing at all, any witchcraft can make the human race cold and hot, food is not a problem, just catch an immortal-level fierce beast can let the tribe eat for a few years.

As for the preservation of food, it is also very simple, one food spell is enough.

It can also be stored in the space items sent down by the Candle Nine Yin Wu Clan, the food will never rot, even exactly the same as fresh, Candle Nine Yin masters the law of time, which can make time stay in a moment forever.

However, Fang Haolai Terran wants to develop scientific and technological civilization, so this snow disaster must be solved by wisdom, stimulate the wisdom of the Terrans, and discover civilization is a good opportunity.

Modern society has government assistance when encountering snow disasters, but this flooded world is cruel, there is no government agency to rely on, and the tribes themselves must rely on themselves.

Low temperature is the environmental test faced by the Terrans, in the cruel test, people learn to make clothes, because those who can’t make clothes all die, this is evolution.

Low temperature is very terrible, until modern times has been one of the sources of human suffering, eating enough and dressing warmly has always been human pursuit.

In the history of the earth, I don’t know how many people died of hunger and cold, until the development of air conditioning, the cold gradually left humans.

Although Fang Hao didn’t know how low the temperature of the snow disaster was, it was certain that minus tens of degrees was certain, otherwise so many people would not have died.

minus 30 degrees is the lowest temperature that the human body can withstand, once it exceeds minus 30 degrees, people are easily frostbitten and cannot survive in such an environment for a long time.

If the temperature is below minus 30 degrees, then it is very scary, when you take a pot of freshly boiled hot water out of the house, in just a few seconds, the water temperature will decrease, and after more than ten seconds, it will directly turn into ice water, and if it exceeds 25 seconds, it will directly turn into a popsicle.

If you go out at this temperature, you must completely wrap your face, otherwise, the whole face will freeze and be frozen into a human stick, and there are many examples of this in Antarctic expeditions.

Fang Hao is not worried about the cold, the earth civilization has summarized many ways to fight the cold, in the modern northeast countryside, the temperature often reaches thirty or forty degrees of extreme cold, the main way for people to resist the cold is to rely on burning kang and earth heating, of which burning kang is the simplest way.

Originated in the Western Han Dynasty, heat energy was obtained by burning firewood in the fire pit, and then the heat energy was transmitted to the pit through the stone slabs above the kang.

The torch is a masonry structure about 1.7 meters wide and about 2.3 meters long, surrounded by brick walls, and the middle is made of bricks to form a kang wall, which is used to set up flues.

The kang is covered with relatively flat stone slabs, which are covered with mud and smoothed, and then covered with mats on dry mud for use.

The kang has a stove and a smoke mouth, the stove is located in the front, used to put firewood, and the smoke and heat generated are heated through the kang wall to heat the stone slab above, so that the stone slab generates heat.

The smoke port is located above the torch, and a smoke window can be built to prevent thick smoke, and the smoke is finally expelled from the smoke port through the chimney outside.

Once the kang is burned, the kang will become very warm, even if the temperature is cold, it can withstand it, it is the crystallization of human wisdom.

Although modern people seem simple, the invention process is not so simple.

To build the kang first have to burn bricks, burning bricks is a technical work, first have to find a very fine and sticky loess, called cement, and then loess add water and sludge, loess plus water and water constantly stirred, this is called refining mud, get out the foreign matter inside, need to stir for a long time, until the sludge is soft and even, no foreign matter.

Then you need to make the soil into bricks with a mold, that is, make a brick mold, put the refined mud into the mold to compact, sprinkle with fine sand, put it in the sun to dry, air dry and wait for firing.

At least prepare the brick cellar, which is a huge stove with a flue specially designed for burning bricks, and the heat inside the stove is preserved inside the stove as much as possible.

Put the air-dried bricks into the brick cellar can be fired, the bricks into the kiln should be staggered and stacked, leaving a gap in the middle, so that each brick can absorb heat, constantly put firewood into the brick cellar, use the temperature of the flame to burn the brick cellar red, until the temperature of the brick cellar reaches the highest, melt some of the material components inside the brick

Generally, it is almost okay to burn for seven days and seven nights.

This is followed by the cooldown of the brick cellar.

If you want red bricks, slowly turn off the fire, the air into the cave to cool is red bricks, if you use soil to seal the kiln, the thickness of the soil is about one foot, and then add some water to the soil, and wait for the water to cover this layer of sealed soil.

However, someone should be watching at any time, add water in time after the sealed soil is dry, and after a period of time, you will get green bricks, and finally you can get out of the kiln when the temperature of the kiln drops.

The clay contains iron, and when it is completely oxidized during the firing process, it produces iron oxide with red color, which is the most commonly used red brick;

If water is added to cool during the firing process, water and carbon are used to generate hydrogen to reduce iron, so that the iron in the clay is incompletely oxidized to ferrous, it is cyan, that is, green bricks.

If the air in the kiln is circulating and oxygen is sufficient, forming a good oxidizing environment, the iron element in the brick will be oxidized to iron oxide, because iron oxide is red, so the brick will also be red.

Although the quality of green bricks and red bricks is the same in theory, it has been found in practice that green bricks are better than red bricks in quality, strength and performance, so the ancient buildings preserved now are made of green bricks, and red brick buildings have long been weathered and collapsed with time.