When you look up, the sky is full of dark clouds, thunder and lightning are hidden between the clouds, and heavy rain is expected to fall again.

Liu Xiecai reacted, and he roughly remembered that there were about four cold periods and four warm periods in Chinese history.

Eastern han dynasty!

It's in the middle of the second cold period!

During the cold period, there were some abnormal snow days, such as 50 years later, Sun Liang's reign of Wu State, in the middle of summer in June, there was a strange weather of thunderstorm and heavy snowfall, which is known as "June snow" in history.

There are no tombs in the mountains, the rivers are exhausted, thunder and earthquakes in winter, rain and snow in summer!

On this plane, these are symbols of the end of the world.

And now, it's the Winter Thunder Earthquake!

Liu Xie thought of this, and his face was a little cold, because the current big man was in the middle of the second cold period.

And this period is also the coldest time.

This winter, there may be a cold spell!

If you don't prepare in advance, countless people may freeze to death, especially children and the elderly!

Moreover, the winter thunder and earthquake will also be used by some interested princes, giving them an excuse and opportunity to rebel against the Han Dynasty.

I looked up at the sky again and found that the dark clouds in the sky were already dense, and the torrential rain could fall at any time.

"Order, order Xun Yue to serve in the service, and Xun Yu to order Shaofu to sort out the natural disaster materials of the Han Dynasty for four hundred years as soon as possible, and then send it to the study."

Xiao Huangmen received the order, took some armor soldiers, and drove back to the Imperial Palace to pass on the order.

"Xuande, I'm afraid there will be heavy rain coming next, in order to hurry, I will ride back to the palace today!"

"Your Majesty~~~This~~~"

Liu Bei, who was standing respectfully on the side, hesitated slightly.

"It's okay, with Evil Lai and Zhong Kang by his side, as well as my pro-army guards, there will be no danger!"

Recalling Xu Chu, who was busy moving stones, Liu Xie rode on a white horse, and stepped over the rocks under the protection of the two gate gods of Dian Wei and Xu Chu. Head back to the Imperial Palace.

After returning to the Imperial Palace, Liu Xie hurried to the study.

At this time, Xun Yue and Xun You, two uncles and nephews, had already taken hundreds of officials. For the time being, select a few records of natural disasters.

Looking at the information, Liu Xie recalled the division of cold and warm periods in later generations.

In the seventh year of King Xiao of the Western Zhou Dynasty, in winter, heavy rain and hail, cattle and horses died. Jiang and Han are frozen.

Therefore, the first cold period in Chinese history was the early Western Zhou Dynasty.

The second cold period is from the end of the Western Han Dynasty to the beginning of the Sui Dynasty, during which it experienced the Eastern Han Dynasty, the Three Kingdoms, the Jin Dynasty, and the Northern and Southern Dynasties.

The cold period is often preceded by an unusual climate as a sign of it.

During the period of Emperor Wu, there were extremely heavy snowfall weather in winter for several years, and there were three major snowstorm years in the record.

Xun Yue carefully selected the cold wave records of Emperor Wu and presented them to Liu Xie.

Holding a bamboo slip. Unfold and take a look: In the early years of Yuanjiao, there was heavy rain and snow, and many people froze to death.

I took another volume, which were March of the second year of Yuan Ding and March of the third year of Yuan Ding, that is, seven years after the great snow disaster in the early year of Yuan Hunt, there were two consecutive snow disaster years.

And what appeared was still an extreme spring cold.

The heavy snow in March of the second year of Yuan Ding was five feet thick!

In the third year of Yuanding, the situation was even worse, and heavy snow fell from March to April. The rivers froze, the crops were not harvested, and the people were starved and cold. There is a human tragedy of "cannibalism".

Holding a bamboo slip that recorded the calamity of the two Han Dynasty, Liu Xie felt a shocking feeling.

In the more than 400 years since the beginning of the Han Dynasty, there have been as many as 375 disasters, 81 droughts, and 76 floods. Sixty-eight earthquakes.

There were disasters in the Western Han Dynasty, but not as frequent as in the Eastern Han Dynasty.

For example, among the 68 earthquakes in the Han Dynasty, only 17 in the Western Han Dynasty and 51 in the Eastern Han Dynasty, the number of earthquakes increased dramatically.

Therefore, since the founding of the Eastern Han Dynasty, there have been many disasters and difficulties, because the cold period appeared at this time.

During the period of Emperor Guangwu, the cold wave was just beginning, so this period was still a transitional period; By the arrival of Emperor Xiaoming, the cold air intensified; In the later stages, the climate was cold to the point of severe and cruel.

Turning over a few bamboo slips, Liu Xie compared them in turn, and he should be thinking in his heart.

During the period of Emperor Guangwu, droughts, floods and locust plagues were the majority, and the cold was still at the point of latent outbreaks.

For example, in July of the third year of Jianwu, there was a great drought in Luoyang;

In April of the fifth year of the establishment of the martial arts, the long-term drought of locusts was a disaster, and the price of grain soared;

After that, until the 30th year of the founding of the military, droughts, floods and locust plagues, the three plagues continued, and at the same time, plagues also broke out one after another.

But after Emperor Ming, there were torrential rains and hailstorms, and the cold air gradually broke out.

For example, in the third year of Emperor Yongping of the Ming Dynasty, in August, the twelve rains and hailstorms in the county hurt the crops;

Yongping ten years, the county eighteen rain and hail locusts;

And by the time of Emperor Zhang, the drought and locust plague had recurred;

Later, during the period of Emperor He, earthquakes were frequent.

In the first year of Emperor Yong, at the end of autumn and July, there was a landslide!

The earthquake was so big that it could cause the Huiji Mountain to collapse, so it can be seen that the earthquake will not be lower than at least magnitude 7;

Four years later, there was an earthquake in the thirteenth of the county; Another year, the Longxi earthquake; Three years later, the Longxi earthquake was restored・・・・・・

Later, during the period of Emperor Shun, in the first month of the first year of Jiankang, there were six earthquakes in Liangzhou County, and from September to April last year, there were one hundred and eighty earthquakes, the valley was cracked, the city was corrupted, and the people were injured.

Emperor Lingguang and the third autumn to the fourth spring, Jiuquan table land one hundred and eighty moves, gushing out of the water, the city in the official temple and the people are all tun, the county is easy to place, and the city is built.

Especially during the reigns of Emperor He, Emperor An, Emperor Shun and Emperor Huan, earthquakes were more frequent.

Not only earthquakes, but also blizzards are common.

Heavy rain and severe cold began in the first year of Emperor Heng's eternal life.

That year, Luo Shui overflowed, bad Hongde Yuan, overflowed to the Jincheng Gate, drifting characters; Ba County and Yizhou flooded, and the mountains collapsed; To the east of Sanfu, all of them are submerged・・・・・・

In the second year of Emperor Hengxi, the summer rain lasted more than 50 days; In May of the fourth year of Yanxi, it rained and hailed in Beijing; In May of the seventh year of Yanxi, Luoyang blizzard;

Yanxi eight years, into the spring even cold, wood ice, blizzard broken trees, ** state and county even snow more than once, the next year, Sili, Yuzhou hunger and cold and died, tithes four or five, and then the plague broke out, locust plague everywhere.

By the time of the first emperors, the situation was even worse.

In the first year of Jianning, summer, rain for 60 days; Jianning two years. In April, the wind and rain and hail of the Beijing Division uprooted hundreds of suburban road trees; Three years, rain and hail; Four years. Rain and hail, overflowing seawater, clear river water・・・・・・

During the reign of the first emperor for more than 20 years, there were heavy rains and cold weather almost every year, and at the same time, earthquakes and plagues were endless. Floods are everywhere!

Unfold the last volume with a clear note on it.

In the sixth year of Zhongping, since June, it rained for more than 80 days, during which the rain and hail continued;

In May of the first year of the first peace, heavy rain and sleet and hail lasted more than 50 days.

And now, it is the first year of the first peace, November, winter!

The big cold is coming. If we don't prepare this year, hundreds of thousands of people could freeze to death!

Especially the two million people who moved west, now their houses have been built, but it is estimated that the cold protection measures are not enough!

It seems that it is time to build a coal stove!

"Xuande, find some charcoal, and a few stoves, I will be of great use."

Coal is coal!

After Liu Bei received the order, Liu Xie summoned Xun You again: "General Shaofu is familiar with mining." There are also workers who are good at blacksmithing, and I want to teach them some techniques. ”

"No!"

After Xun Yu went down, Xun Yue stepped forward and said respectfully: "Your Majesty wants to make something to protect against the cold?" ”

After hearing this, Liu Xie was shocked: "How does Xun Gong know? ”

"Coal makes a fire. After a long time, after His Majesty has seen the cold disasters of the past dynasties, he wants this thing, which should be used for cold protection! ”

With a sigh in his heart, Liu Xie took another look at this great Confucian, the wisdom of this ancient man is really invincible!

After a while. Liu Bei led some sergeants, bringing several baskets of crushed coal ash and several stoves of different sizes. After that, Xun You brought dozens of craftsmen to look at the calluses on their hands, and it was estimated that they were all masters.

After arousing the people to bow down, Liu Xie commanded them to work and build a honeycomb coal stove!

First of all, there is the manufacture of honeycomb coal.

The first is to pile up the coal ash, which is to pile the crushed coal ash into a small pile and then dig a large hole in the middle.

Then cover the coal ash and pour an appropriate amount of water in the middle of the coal mountain, not too much, and the water does not flow out; Then cover it with soot, and after a few quarters of an hour, the water will fully penetrate into the soot.

The second is to mix with coal ash, mix the coal ash that has penetrated into the water, and mix it while patting; After mixing, the coal ash can be grabbed with your hands and feel loose, and you can hold it with both hands to form it.

Finally, to press the honeycomb coal, Liu Xie ordered the craftsmen to make a honeycomb-shaped container, and then press the reconciled coal ash into it, which must be compacted.

In this way, honeycomb coal that can be stacked is made.

The advantage of this honeycomb coal is that it is easy to store; Moreover, hole-to-hole can strengthen air convection and make the combustion sufficient.

There is a row of holes in the honeycomb coal, and when the old coal burns out, the new coal is added to align the holes, so that if there are two honeycomb coals in the furnace all the time, it can be used continuously.

With the combustion, the next step is the manufacture of the honeycomb coal stove.

The honeycomb coal stove, unlike the ordinary coal stove, has a small door in front of it that can be opened and closed so that the coal fire remains unextinguished.

Don't underestimate this small door, it is for ventilation, and the air can only help the coal to burn if it enters from here, and if there is no opening, the nest coal stove cannot burn at all.

At the same time, the honeycomb coal stove must have two layers, both inside and outside are made of a layer of iron sheet, and the middle compartment needs to be put into some lime and other thermal insulation;

As for the reason for establishing a partition, on the one hand, it is to keep the outer wall of the honeycomb coal stove from being hot, and on the other hand, to keep the heat of the honeycomb coal stove, so that the coal can be burned better.

When everything was ready, Liu Xie began to try the effect of keeping out the cold.

"Whew~~~Whew"

The moment the coal was ignited, in the cold wind, the temperature outside the house immediately rose, and Liu Xie and the others were instantly surrounded by warmth.

"Your Majesty, if you create this thing, you can live 100,000 people!"

Looking at the whirring and igniting honeycomb coal, Xun Yue, the old man who felt the heating, immediately knelt down and bowed.

"Hooray! Hooray! ”

The rest of the people also reacted and immediately shouted the Holy Son of Heaven!

"Get up!"

Dozens of craftsmen were summoned, and Liu Xie asked, "Have you memorized all the steps just now?" Do you get it? ”

Looking at the workers who were a little confused, Liu Xie explained the principle in detail again, and only stopped after they understood. (To be continued.) )

PS: The third update! It is to thank the friends of Xiaoyao for their strong support, as well as the support of all book friends! The shelves were rushed before, and the manuscript was insufficient, so the outbreak was not powerful! Here, first say sorry Ha (∩_∩) It is necessary to break out in the future, and it is also necessary to add more!