Before we knew it, winter was coming, and it was colder every day.

With the full help of Du Zhongxiao and Su Song, Han Jiang's family made a new steam engine and placed it in the small courtyard where he studied, and enjoyed it from time to time.

On the first snow of the day, several people gathered in Han Jiang's courtyard, drinking around the stove and chatting about gossip.

After the spontaneous interpretation, with the help of Su Song and Han Jiang, Du Zhongxiao's articles made great progress and became much more cheerful. Finally, he finally figured it out that he was not familiar with the theories of this era and did not really need to understand this set. The ministers of this era did not have much clearer ones and believed even less. He only needed to summarize some key points in the theory clearly like in his previous life, and then arrange them to the appropriate position of the article. It was nothing more than the relationship between heaven, earth, emperor, ministers, and people, and the relationship between these people was arranged and combined according to the theories of sages in history, and grasp the topic.

This kind of thing is harder to say, but it is not difficult to help with people like Su Song and Han Jiang. Just like taking the politics exam in previous lives, if you really want to study that set of theory clearly, how many students can do it? But if you choose the most important points, and put some basic principles into the right position according to the given questions, you can get high scores. In this era, the Jinshi exam was actually similar.

After drinking a glass of wine and looking at the whiteness around him, Du Zhongxiao said, "As the saying goes, auspicious snow indicates a good harvest. Soon after winter this year, there will be such a snowfall, and the next year will definitely be a good harvest. It is often said that heaven and man correspond, isn't it the meaning of political harmony?"

Du Zhongxiao has been trying to learn to be a devil these days and said it casually. In fact, the war in the northwest is not good now, and there are many disasters in the territory. There are no signs of political harmony between people and people. He only thought about how to make things happen and forget all of them.

Han Jiang shook his head repeatedly: "If you don't say that the war in the northwest is not good, it's because of the severe drought last year, the people were displaced and all kinds of disasters. How can you tell the will of heaven by a snow? Those who are Shunde prosper, those who are against virtue will perish. People move people to act but not speak, and those who respond to heaven but not to literature. The ancients did not deceive me. Brother Du, although you have devoted yourself to learning these days, you will not be able to study hard. Otherwise, you will suffer from it."

Du Zhongxiao suddenly woke up: "Thank you for your advice from Brother Han. Shunde has a prosperous future. I once bought a book of the current article and wrote this topic. There are many articles to write. By the way, it is moving but not speaking. I remember it comes from "Book of Jin"? This sentence is also easy to write a scientific examination question."

Everyone laughed when they heard this. Su Song said, "Brother Du is too obsessed with the scientific examination. How can you do this? I don't know how many classic historical books in history have been there. If you can take out the questions, you will count them like the sands of the Ganges River. You can count them. Okay, don't think about these things quickly."

Du Zhongxiao laughed himself, just wrote down the sentence Han Jiang said just now and went back to practice as a topic.

After drinking for a while, several people went to the steam engine made by the Han family, and then cooked the fire in the stove. According to Han Jiang's intention, the steam engine did not have blades behind it, but changed to a large rotor and whirls there. Putting the rotor on the ship is a simple steamer. However, the power of this small steam engine is too low, so people can't stop it with their hands, and it has no practical purpose.

Han Jiang pointed to the machine and said, "You said, can you put this thing on a boat and drive the boat?"

Du Zhongxiao shook his head: "No. This thing is too heavy, the strength is too small, and it cannot be carried. You can use a number to determine whether it can be used, which means how much pounds the machine weighs and how much pounds the force is produced. Once the two are separated, it will be clear at a glance. Although the machine at Brother Han's home is much more exquisite than the one we produced in the Imperial College, the ratio remains roughly unchanged, and it is still the same thing."

Su Song sighed: "I have been thinking about this thing for a long time. It is very difficult to increase this ratio."

Du Zhongxiao was in a good mood and said on a whim that he learned the theoretical knowledge in his previous life: "If you want to increase the ratio, I think the key is in such a few places. One is the steam density in the cylinder, that is, the pressure applied to the plug, the greater the ratio, the better the ratio. Another is that the steam inside is the hotter, the better, and the colder it is when it comes out. Of course, anywhere there is steam, you must be kept tightly."

One steam pressure and the other steam temperature are actually the temperature difference, which are the keys that affect the efficiency of the steam engine. It is also these two keys that are difficult to break through technical problems, which are both related to the structure and materials. If you don’t consider these, you are just a toy.

A few people were fine and enthusiastically discussed how to increase the pressure and temperature around the steam engine. Han Jiang was the most enthusiastic about this matter. He wanted to load the machine on the ship to replace the canal ship on the Bian River. And out of a strange intuition, he felt that he would definitely be able to do this.

Du Zhongxiao naturally knew the importance of steam engines. This kind of thing was practical. Many major problems in this era were solved. For example, the most important thing now is the war between the northwest and Dangxiang. What was the most difficult thing in the Song Dynasty? In fact, it was not that the military strength was insufficient. The Song Dynasty was always at the upper hand. Unfortunately, the war was not a game of the casualties between the two sides. This war could not be fought in the Song Dynasty. The long logistics transportation line determined that once the war started, the Song Dynasty must fight quickly, otherwise it would be dragged down by the logistics. Once the war was seeking a quick victory, it would be full of dangers. If you don’t seek a quick victory, you can only defend to the death and you can’t see the hope of victory. This was the dispute between Han Qi and Fan Zhongyan some time ago. Han Qi was the main attacker and pursued a quick victory. Fan Zhongyan was the main defense, and that was the main defense. Dangxiang collapsed.

What is the most lacking in this era? It is the convenience of transportation. With the steam engine, the biggest problem will be solved.

But knowing, Du Zhongxiao cannot spend too much energy on this now. He has to concentrate on preparing for the imperial examination. Making these model toys is more of a game for Du Zhongxiao, and a casual move when studying.

If the steam engine is to be practical, the next work is what Watt did in history, which is the real difficulty. Thinking about Watt's status in history, you will know how difficult the next work will be. Of course, with Du Zhongxiao, a person who has experienced it, it will not take such detours as in history.

Su Song's interest lies in technology, while Han Jiang's interest lies in application prospects. They often don't want to talk about it together.

Du Zhongxiao's mind was full of the following provincial exam questions, and he answered other people's questions without saying a word.

Looking at the snowy whiteness around him, Du Zhongxiao suddenly felt a sense of absurdity. He was truly educated among these people, but his mind was full of thinking about the response of heaven and man, and he was almost possessed by the devil. However, these people who were educated by the response of heaven and man since childhood were full of interest in a machine from later generations, racked their brains to study its principles and structures, how to improve and how to apply it. The whole world seemed to be misplaced.

Thinking of this, Du Zhongxiao could only smile bitterly. Even if he had a lot of knowledge, he had to think about how to integrate into the world.

While several discussions were getting hot, a servant came in and presented a famous sect to Han Jiang, reporting: "A young scholar came outside, and said he was from Jinling and had an old age with the young official."

Han Jiang took the famous sect and looked at it, and hurriedly said, "Hurry and invite me! This person is my old acquaintance, just invite me here."

The servant went to the office.
Chapter completed!