I am Da Song

Chapter 345 The prototype of the steam engine
Yelu Yanxi stayed in Beijing for two months, gathered more than [-] people, and wandered west along Mongolia.

The reason why they marched close to the territory of Mongolia was because in April, the Song-Mongolian war that Song Dynasty had been waiting for finally came to fruition.

The commander of the Jingsai Army, Han Shizhong, took advantage of the fact that the Mongolian army was gathering and preparing to go south to plunder, and led cavalry to raid the eastern part of Mongolia near Yuerhai.

The iron cavalry of the Song army smashed the crowd, beheaded more than [-] ranks, captured more than [-] Mongolian men and women, and took more than [-] horses, cattle and sheep.

Eastern Mongolia suffered heavy losses, and at least one-third of the tribe and wealth were lost in this war.

The good news came back, the personal conquest battalion division stationed in Beijing finally disbanded each of the 20 troops, and the imperial battalion also began to return to the capital.

At the end of June, Mika arrived in Tokyo City.

In order to welcome the triumphant return of the officials, Tokyo held a grand welcome ceremony.

Hundreds of thousands of people in Tokyo City poured into the streets, applauding warmly, celebrating the entry of officials into the city.

When Zhao Huan's Son of Heaven banner appeared in the city, the cheers of the people were like a heat wave, as if shaking the whole city.

In any dynasty, the expansion of territory is the most proud of the people.

Today's son has expanded the land for thousands of miles, and the people of Tokyo can't wait to compare the current son to the sage king of the world.

Zhao Huan returned to Xuandemen all the way amidst the cheers of countless people.Entering the imperial palace, You Shan shouted Long Live behind him, and his voice reached the ban.

Zhao Huan went to the palace to rest, and the ministers took Wanyan Wu to beg for money and went to the Taimiao again. This time, the court will sacrifice to the Taimiao in the most formal and solemn way, to accuse the ancestors of their merits.

The process of offering sacrifices to the Taimiao is rigorous and solemn, and the ministers will not be able to complete it for a while.

Zhao Huan met his wife in the palace, whom he had not seen for more than a year.

The queen is 31 years old this year, but she is still the most beautiful woman Zhao Huan has ever seen.

The 30-year-old is well-maintained, wearing elegant and cool dresses, she looks like a little girl in her early 20s.It also has the tenderness and coquettishness of a young woman.

No wonder Boss Cao spent his whole life dissolute and loving his wife!

Perhaps because of Xiao Biesheng's newlyweds, Zhao Huan felt that the queen was more and more beautiful.

Regardless of the presence of the servants, Zhao Huan stretched his arms and embraced the Queen into his arms, rubbed his lips together, and said: "I am fighting outside the Great Wall, what I miss most is the Queen's face and gentleness."

Zhu Lian said with a smile: "I'm afraid that there are too many women who miss the official family, and I will no longer be able to rank."

Zhao Huan hugged the queen and sat on the soft couch, and asked with a smile: "Which lady is this, who made the queen so jealous? It's really the first time I've seen you as a little girl."

Zhu Lian pointed to the envelope on the table and said, "Over there, there are letters from a young lady surnamed Su to her brother Zhao. The table is almost full."

"Last year, it was only one or two letters a month. Recently, the frequency has become higher and higher, and there will be one every now and then."

Zhao Huan instantly beamed with joy, it was Su Dai's letter!

Could it be that the steam engine had a breakthrough?

Regarding the concept of the self-propelled carriage, Zhao Huan mentioned the principle of the steam engine to Su Dai in letters.

Of course, in such a huge country, Zhao Huan would not pin all his hopes on her, a mere girl.

The Third Supervisor of Military Weapons, Taixue, the Ministry of Industry, the 24th Department of the Six Shangs, and the Royal Consortium all have an identical overview of principles.

The so-called science is nothing more than using a lot of money to promote continuous trial and error and continuous experimentation.

If any of these researchers develops the steam engine, Da Song will benefit endlessly.

Today, it is only more than 500 years earlier than the steam engine in history.

The span of 500 years is only from the founding of the Tang Dynasty to the present.How big a technological gap can there be between the Tang and Song Dynasties?It can be said that Da Song now has all the conditions to develop a steam engine.

Zhao Huan immediately sat down at the table and opened Su Dai's letter.

The last letter was delivered yesterday.

But unlike the research breakthrough that Zhao Huan guessed, this is a confession letter.

Su Dai is 19 years old this year, and the pressure from her family is forcing her to marry.

Lu Weina always said that Zhao Huan was supercilious and unrestrained, which is really incisive.

Zhao Huan can focus on the world without any distracting thoughts, and put all his thoughts on the world.

But Su Dai is just the daughter of an ordinary public official. She has the troubles of marriage and the pressure of the world.

It is impossible to study vehicles without distraction.

Zhao Huan opened several of her letters and found that her father had found a husband's family for her. If there were no accidents, she would marry to Sichuan this autumn and be the third daughter-in-law of a high-ranking official's family.

Once she marries far away, Zhao Huan's support for her career will be forced to stop.

So she blamed herself deeply, feeling that she had let down the Zhao family brother's original sponsorship of [-] yuan.

Seeing that Zhao Huan was frowning, the queen stepped forward and asked with concern, "What's the matter, official? But something is not going your way? I'm in charge of regulating the relationship in the harem, and maybe I can help the official solve these trivial matters."

Zhao Huan handed over the letter in his hand to the queen, continued to open Su Dai's other letters, and said, "The queen is thinking too much, it has nothing to do with the love of children, it is about the knowledge of things."

Soon, Zhao Huan found more important content in the letter.

In addition to talking, Su Dai also reported on technology research and development.

Because she was afraid that the research would be terminated because of her departure, she took the initiative to cooperate with Taixue on the results of the research.

Both parties have now established the feasibility of steam power and the existence of air pressure.

Moreover, Taixue found the key prototype of the steam engine in the translated works, the steam-rotating ball invented by the ancient Greek mathematician Hero.

The principle of the steam ball is very simple. It consists of a hollow ball and a closed pot filled with water connected together by two hollow pipes, and the water is heated at the bottom of the pot to boil and then turn into steam and then enter the ball through the pipe. In the end, water vapor will be ejected from both sides of the sphere and cause the sphere to rotate.

This is the earliest known machine that converts steam into power.

Seeing this part of the letter, Zhao Huan has already confirmed that the steam engine of the Song Dynasty will come out soon.

The principle of converting steam into power has been mastered by the Taiyuan Academy and Su Dai, and the rest is only about the engineering structure.

And this aspect is precisely what the Central Plains has been best at since ancient times.Countless ultra-high-tech inventions that have been ahead of the world for hundreds or thousands of years are all proud of this advantage.

As long as they are given a period of time, they try to build different steam engine structures, and they will be able to bring out the effect of steam power immediately.

Married at this time?
What love between men and women can compare with the foundation of Song Wanshi?

Just three words: I don't allow it!

"Come here, pass on my edict!"

(End of this chapter)