"The bed crossbow has been improved and has been up to a thousand steps. I have a new improvement diagram for a long time, but the craftsmen cannot make it. If it can be cast by the lost wax method, it will be more than just a wonderful thing! Thank you for your teachings. Thank you for your teachings."

Li Gang was very excited and rubbed his hands. If he had accompanied Zhao Huan to inspect now, he would have gone to discuss with Lao He.

Zhao Huan waved his hand and said, "No, no hurry. I have something here, look at it. This is called gear."

Zhao Huan took out a book directly from his sleeve. This book was amazing. It took him 5 points to change it. It was called "Mechanical Principles and Mechanical Design".

In his opinion, this book talks about how to draw gears. Of course, he has a very shallow understanding of mechanics, which means that when he was doing manual DIY, he learned some simple content.

I can't tell you why, but professional matters should be left to professionals. Since the Song Dynasty military weapons supervision is so advanced, it is naturally enough to leave them to study.

Of course, he knew the method of losing wax, and he learned about the relevant knowledge entirely because he liked to do manual DIY. He once rubbed a four-stroke internal combustion engine by himself and assembled a rail car to play.

Of course, he has now lost all kinds of materials and tutorial video teaching in later generations. He wanted to make an internal combustion engine and tie the rail car, which was completely a dream at twelve o'clock noon, so it was impossible.

He looked at the bed crossbow, which was an extremely special machine. It would be terrifying to think about it if it could combine the killing weapon of this cold weapon with the mature mechanical theories of later generations.

Zhao Huan handed the book to Li Gang and said, "This book is extremely precious, there is only one in the world! The top secret of the Song Dynasty and secretly made things that cannot be promoted. Does Li Shaoqing understand?"

Zhao Huan handed over the book in his hand. Of course, the book of Mechanical Principles has been systematically improved and has become more in line with the style of the Song Dynasty.

But what Zhao Huan is worried about is not this, but will this book come out nine hundred years in advance. Will it go wrong?

You can't learn it for the enemy!

Ready-made examples: Xixia, Liao and Jin have learned a lot of techniques from the Central Plains. Now they are wearing cold-forged armor and the leather lining is very comfortable. They go south to the Central Plains at any time. The technology is still confidential!

It is best to ensure the leadership of the Central Plains dynasty.

"The top secret of the Song Dynasty?" Li Gang flipped it a few times, looked at it for a long time before solemnly closing the book and put it in his sleeve.

He held the book with one hand and lowered his head and asked, "The official family must not let anyone read it? Or can it be read it for some key loyal people."

"The official book is so broad that it is unprecedented. It contains too much content. I need to find a few people to study it together." Li Gang just read a few paragraphs and found that this book is very different from the books that can be read hundreds of times before. If you don't need to start, you can't understand the key.

"Are you a military weapon supervisor? If so, you will bring it here now and have read this book, you must go through my inquiry." Zhao Huan was inquiry, just wanting to use the automatic identification of the system to see the loyalty.

"Yes, the official family. I'll go find it now." Li Gang left after saying that.

Mr. Zhong reached out and stopped him. Li Gang left, no one pushed the cart, so how could he walk around!

It's so superficial! Li Gang is in his forties, but he is still so reckless, just like a child.

"Zhong Shaobao has never spoken in court, temple calculation, or Chang Chao these days, so I don't know what's wrong?" Zhao Huan naturally pushed up the swivel chair of Master Zhong, which is very common.

He is a teenager under the red flag and has worked a lot on wheelchairs for elders.

Zhuan Shidao was ready to speak in a hurry, and Zhao Ying jumped out and said, "The official family must not be used, I must not be used! I will push you, and I will push you. I will not be used!"

What is the reason for this!

He finally pretended to be a thug, and followed Zhou Gong's spit shop to win over the hearts of court officials, but was disturbed by the eunuch leader Zhao Ying.

When Zhong Shidao saw the displeasure in Zhao Huan's eyes, he smiled and said, "Don't blame Zhao Ying, he is also for my own good. If you touch a car, wouldn't you be hitting this workshop on the spot to repay the great kindness of the official family? It is indeed impossible to do so. The minister is the minister and the king is the king."

"The officials asked the officials why they didn't speak these two days because they had nothing to say. Some minor problems are also a problem that young people should have. They are irritable and always want to get things done in one day. They are all good. If the officials can persevere and persist for three years, the Song Dynasty can revive."

"If the official family can last for five years, the Song Dynasty can restore its prosperity. If Your Majesty can persist for more than ten years and remain unchanged in its original intention, the Song Dynasty can have a glimpse of the great country."

Great Food Country?

[Great Food Country: The Great Enemy of Tang Kingdom in Central Asia. That is, the super empire spanning the three continents of Asia, Africa and Europe, and the Arab Empire.]

this……

Zhao Huan's eyes when he looked at Zhong Shidao changed. When the officials of the Song Dynasty praised people, would they be so good at praising people?

"I am rich in Song Dynasty and cannot resist commerce, so commerce is developed, with an annual income of over 100 million yuan. This is still the time when Yanyun is missing. If Yanyun is taken back, the annual income will be increased."

"Waring war requires a lot of money. In the previous dynasty, Han and Tang dynasties, they all suffered from underdeveloped trade and had no money in war, and they only rely on the lush branches and leaves. However, our Song Dynasty had more books and less time to be prosperous, but also had lush branches and trunks." Zhong Shidao said with emotion.

He traveled thousands of miles to come from Qinfeng Road to Bianjing City, which consumed some of his last chances. Although he could still support him for a while, he might not see that time.

He is old.

"The officials, everyone has arrived, there are a total of ten people." Li Gang hurried back, dragging several military weapons and supervisors.

Zhao Huan swept around and found that the loyalty of most people was within his acceptance range, and his loyalty to the Song Dynasty exceeded 90 points. He was already very qualified.

But one of them made him narrow his eyes.

[Liu Yi: The name Yizhi, who is a master of the capital, is a mathematician. In the third year of Yuanfeng, he was nearly fifteen years old. He completed a "On the Ancient Roots" and proposed the root-finding method of quadratic equations. He used the method of increasing, multiplication and opening. The system used the related concepts of positive numbers, negative numbers, integers, and decimals, and also used the method of increasing, multiplication and opening to act as a numerical solution to general higher order equations.]

[The Northern Song Dynasty has a total of twelve mathematical textbooks, "Five Cathedrals", "Nine Chapters", "Island", "Zhang Qiujian", "Xiahou Yang", "Zhou Feng", "Five Classics Calculation", "Jiu Shu", "Jiu Gu", "Records of the Relics", and "Three-Class Numbers". We have studied for a total of 14 years before we can participate in the mathematics examination.]

[When Yang Zhongfu used the Tongtian Calendar to locate the one-year-old 365.2425 days, Europe was still using the cowardly orders of the Roman Empire more than 1,500 years ago. The cumulative prevalence has been 10 days, which often plagued many Western scholars. Now when the Secretariat organized a large number of printing "Nine Chapters of Arithmetic", the West was still using parchment.]

[China emphasizes harmony, foreigners emphasize distinction. After Zhucheng Neo-Confucianism emerged, and after the eight-legged essay, mathematics and science became strange skills and craftsmen became inferior. No one studied mathematics and science, and no one explored the mystery of heaven and earth. How sad!]

Zhao Huan looked at Liu Yi in a daze. Is the Song Dynasty he came to be the last gray-yellow moment when mathematicians and science can still wait for the elegant hall?

"Official family, is this person not right?" Li Gang asked blankly.

This person is his friend, and he helps in the military weapon supervisor, and just helps him design something.

This person does not like the career of the official career and likes to draw. He is particularly good at fish, insects, birds and animals.

He also helped Emperor Zhao Ji draw paintings for a while. Now he is unemployed at home, so he is specially hired to help him calculate the range of weapons and other mathematical matters. He is a Jinshi, not a doctorate in mathematics.

Zhao Huan shook his head and said, "It's nothing wrong. It's just this person. You can study this book "The Original Geometry" and "The Same Text Calculation", which are also top secrets in the Song Dynasty. Cultivate the mathematical ideas summarized and summarized, and you may have a lot of gains?"

The value of the two books is only 1 point in total, but Zhao Huan's mechanical principles are as high as 5 points!

Liu Yi is also in his forties now. If Li Gang hadn't been begging him constantly, he would never have participated in anything about Zhao Song. He would have been desperate for the Song Dynasty.

When he took the two books, he was a little disdainful. What good things can this tiny Zhao family have?

After he flipped through it twice, he found a stool, sat down, and began to study it carefully.

[Liu Yi, who was about to kick into the calculus gate, may get different answers from the two books, or may get nothing from the two books.]

Zhao Huan looked at the others and said, "You must study the book "Mechanical Theory". Remember not to spread it. Li Gang, you are responsible for staring at them."

It will probably take a long time for the loyalty of ninety points to fall to the 0 points of treason.

Probably, birds of birds of birds flock together. The people around Li Gangman are quite loyal, so good, so I'll give him a thumbs up.

Li Gang nodded and said yes, he was originally a civil servant and did not love these machinery too much. In comparison, he prefers to support the world.

The remaining nine people were the best among them. But hearing and hearing, his interest in machinery had become instinct.

"When the study is completed, we will compile a teaching book. When the Jin soldiers retreat, the craftsman must be arrested. The Jin soldiers will be beaten with iron pagodas and kidnapped horses and cannot leave the door, so they will be thrown into the desert."

Zhao Huan found that when he came to this point of time, there were still many things to do, such as systematicizing mathematics and machinery, becoming a project for the imperial examination.
Chapter completed!