Since Jingzhou.

Or to be more precise, since the establishment of the Gong'an County Craftsmanship Department, iron-smelting techniques have been innovated from time to time, and the output of blacksmith shops has also been steadily rising.

The more iron is smelted, the more slag there is.

However, based on past experience, the use of slag has been planned for a long time.

Either it can be re-smelted in order to completely smelt the residual iron in it.

Either when building a rammed earth wall, the whole basket is directly added as a building material.

Either that or just mash it and use it to pave the way.

However, on the whole, the three uses are similar, highlighting one waste utilization.

After all, Gangneung City has long been completed, and the slag is no longer used to build the city.

The public security burned the ore with coal, and used the improved water discharge to supply air to the furnace to heat up, which eventually made the slag basically no need to refine.

The effect of paving the road is hardly called the best, after all, whether it is stone bricks or stones, although it is not as cheap as slag, it is more than a thousand times more beautiful than it.

Kong Ming still remembers that when he was a child, his wife had inadvertently mentioned in his letter, saying that there was a vacant land next to Gong'an County for stacking slag.

At that time, I just smiled when I saw the news, and by the way, I sighed at the prosperity of iron smelting in Gong'an County.

At this time, I saw the formula casually said on the light curtain, and then looked at the tall and magnificent ruins of ancient Rome.

For a while, Kong Ming was a little bit of a loser:

It's bad, Jiangdong shouldn't steal our slag, right?

As for the other two things in the formula, Han Changan and others can only say that they are not too familiar.

Lime built a wall, Zhou already has.

Clay pottery, passed down for thousands of years.

Compared with Liu Bei, Kong Ming and others' attention to this new formula, Ma Chao's reaction was quite flat, after all, the concept of technology was still too unfamiliar to him.

Ma Mengqi's first reaction was to envy the perfect planning of the Gyeonggi area, and this division of labor and construction of cities complemented each other, which was unimaginable to him in the Yongliang countryside.

Thinking about the grand and perfect planning of Chang'an City hundreds of years ago, and recalling the Han Chang'an that this voice said before was finally abandoned due to pollution, and later moved to build a new Chang'an, Ma Mengqi suddenly felt that his imagination of Chang'an was a little shattered:

"No matter how good the planning is, in the end, it will not be due to ...... feces"

Before he could finish speaking, Zhang Fei had already quickly tossed Ma Chao's chin to stop him.

The eldest brother is in high spirits at this time, how can he let this Xiliang child block everyone?

Facing Ma Chao's unconvinced face, Zhang Fei looked disappreciative and whispered:

"If according to what our juniors say, then Rome is so difficult to get a water diversion, and the dung may be even more useless."

Zhang Fei thought very clearly about this, although everyone has a different appearance, but after all, they are all people who need to eat, drink and Lazar, and the problems that Han Chang'an needs to face, this Rome can't escape any of them.

……

"This thing...... It's subtle. ”

The first person to understand the principle of pressurized water wells was Yan Lide.

This middle-aged man who was in the Sui Dynasty, later joined the Qin Palace, and is now in charge of the prison, once thought that the biggest achievement in his life might be to build an imperial mausoleum.

But now that the light curtain is together, Yan Lide can see the same world beaten out by thousands of craftsmen.

The plan for the imperial mausoleum that he had once kept in mind had been thrown away by Yan Lide.

Now he just wants to see with his own eyes that the prison will be carried forward in his hands, and step by step the Tang Dynasty will be hammered into a new appearance.

Yan Lide's voice of exclamation was not small, and Li Shimin immediately cast his gaze over, his eyes full of ignorance.

"Your Majesty, don't worry!"

Now Yan Lide, who has great ambitions, is full of confidence:

"If you don't wait for Jin Wuxi to fall today, the minister can present this thing in front of the palace!"

"Good!"

Li Shimin was also in a good mood for a while.

What is the most important thing about being an emperor? Forgiveness, forgiveness, knowing people and being good at their duties.

What if he doesn't understand this craftsmanship? The people he promoted just knew how to do it.

Coupled with Yan Lide's courage to ask for his life before, Li Shimin's face became more and more soft for a while:

"Today's things are complicated, and tomorrow it can be presented to me after the preparation is perfected."

Yan Lide and Li Shimin looked like gentlemen and ministers, which suddenly made Yan Liben a little uneasy.

Therefore, he couldn't help but set his eyes on Li Shimin, and wanted to hear the order from His Majesty to let him assist his brother.

This look was captured by Sun Simiao, who was standing next to Li Shimin.

Imperial Physician Sun thought about the hard work that Yan Langzhong had worked with him in the past two months, and knew that it was not easy, so he immediately piled up a smile that he felt the most kind to Yan Liben.

This smile made Yan Liben's body shake for a moment, and he remembered what he had seen and heard in the new Imperial Doctor's Office, especially when this Imperial Doctor Sun occasionally disliked Yan Liben's drawing was not accurate enough, and asked him to measure the internal organs with his palm, and now he feels numb when he thinks about it.

Just thinking about it for a moment, Yan Liben's face suddenly turned a little pale, and he hurriedly turned his head and didn't dare to look at it again.

Sun Simiao touched his beard and was slightly relieved:

Originally, it was not easy to read in Yan Lang, so he planned to rest for five more days in addition to the ten days of Yuan Zheng.

But looking at the look of this Yan Langzhong, like his brother, he is also a person who has the courage to take responsibility.

After ten days of rest, I will ask Yan Langzhong to watch the painting as soon as possible, and then start the operation!

As for the urban agglomeration planning praised by the juniors in the light curtain, the people in the Ganlu Hall were not surprised, and they felt that it was a matter of course.

After all, the younger generations have said that there has been a plan for the city since the Shang Zhou.

Isn't it natural that the descendants of the Qin, Han and Tang dynasties of the Shang and Zhou dynasties could plan urban agglomerations?

After lowering the expectations of Rome in the distance a little, Zhenguan and the ministers also raised their heads with interest, and wanted to hear more about this Rome.

But it's a pity that Wen Mang didn't fulfill their wishes.

[At this point, let's look back at the climate change map of the past 2,000 years.]

Although civilization is not all a puppet of the climate, there is no way to deny the huge impact of climate on civilization.

It is also for this reason that in order to survive for generations, the struggle against the climate has become more and more commendable.

But in fact, for the rise and fall of ancient dynasties, climate change is a big factor, but it is by no means the whole story, and the most typical of them is Guangshen.

The reign of Emperor Yang of the Sui Dynasty was one of the three peak periods of climate in China in the past 2,000 years.

In the other two high temperature periods, one created the Western Han Dynasty, which was famous for its strong Han, and the other created a huge territory that was unique in the Yuan Dynasty.

Standing on the tuyere, not only did he not fly, but he also smashed himself to pieces, this is Emperor Yang of Sui, and the general trend of history cannot be held.

Fortunately, Li Erfengsheng was born in time to sweep the world and his father and brother with unprecedented efficiency.

Subsequently, the non-stop westward expedition to the north expanded, opened the rule of Zhenguan, and created the style of the Tang Dynasty, so that China did not miss this once-in-a-millennium window period. 】

Li Shimin was still nodding frequently, but the light curtain was caught off guard, and a "sweeping father and brother" made his smiling face a little unbearable.

The ministers in the Ganlu Hall are also quite sensible, and at this moment, they are all staring at the light curtain and keeping their mouths silent, and their necks are not turning at all, as if they are all listening attentively to the story of the future generations.

This attitude also made it difficult for Li Shimin to have a seizure for a while, and his chest could only be silent after two violent heavals.

Bear with it!

[Therefore, for the high temperature period of the Sui and Tang dynasties, Li Shimin's role is almost irreplaceable, and it can also be called a model of the struggle between man and nature.

After all, there is no conflict between fighting and fighting against both the harsh low temperature period and the abundant high temperature period.

Although in recent years, there have been arguments that Li Tang has won the world thanks to Li Yuan, but this statement really cannot stand up to scrutiny.

Instead of putting the high-minded arguments of historians here, let's use the most popular time travel today to assume for discussion:

What would happen if Li Shimin and Zhu Qizhen swapped places?

Okay, then this is the end of our issue of "Climate Change in the Han and Tang Dynasties".

Like and follow don't get lost, and we'll see you at the same time next week! 】

The evaluation of the four words "irreplaceable" quickly diluted the four big words of "internal sweep father and brother" that were almost printed in Li Shimin's heart.

So the emperor, who was still angry before, smiled in a blink of an eye.

Although he was occasionally ridiculed in later generations, at least he was very sure of most of his achievements.

So the atmosphere in the Sweet Dew Hall was also relaxed.

Li Shimin coughed lightly and was a little curious:

"Who is this Zhu Qizhen?"

As for the sentence in the middle of the sentence about his father, Li Shimin can only pretend that he didn't hear it.

After all, Li Yuan was not present at this moment, and the "Book of Rites" also said that the father does not speak of the son's virtue, and the son does not speak of the father's fault.

The merits and demerits of the Emperor Taishang, how can the people in their manna hall judge?

Du Ruhui coughed lightly, and in his heart he also admired His Majesty for directly skipping the matter of the Emperor Taishang, which saved everyone a problem.

At this time, Li Shimin's question was quickly answered:

"The younger generations once said that this Zhu Qizhen and that Wanyan are a fight ......"

Fortunately, at this time, there is no need for Li Shimin to continue to entangle, and the dense words on the light curtain have already solved some of his doubts.

If I Cao, Li Er sits in the seat of Zhu Qizhen, with Yongxuan Shengshi and 500,000 forbidden troops, it is estimated that I will be so happy that I don't know how to lose.

If Zhu Qizhen is changed to the position of Li Lao'er, then Dou Jiande, Wang Shichong, and Li Mi will be ecstatic: Lao Tzu's opportunity has come!

To be reasonable, although this hypothesis is a little more open-minded, it does show the role of Li Erfeng very well, without this god of war, even if the Tang Dynasty is unified by relying on Li Jing and others, then Li Jiancheng of the Xuanwu Gate looks at Zhu Qizhen more, and Li Jiancheng is narrow-minded.

No, which god of war are you talking about? Why is Zhu Qizhen, the god of war who is also the first, not a god of war?

Pull it down...... Without Erfeng, it would be impossible to get to Xuanwu Gate, and the plot of the first King of Qin breaking the formation is estimated to be sent.

Pull it down, X2, as far as the quality of the pig riding array is concerned, whether you can get the king of Qin.

The two swapped positions and probably couldn't figure each other out, Admiral Tiance: Your 500,000 troops can be captured? Zhu Zhanshen: You dare to rush 100,000 with 3,000 soldiers and horses?

Zhu Qizhen's script, don't talk about the second child of the Li family, I really do it, ask Yu Qian if you don't decide on foreign affairs, ask Yu Qian if you don't decide on internal affairs, people sit in the harem, and the name of the virtuous comes from the sky. 〗

(End of chapter)