Su Song looked at Du Zhongxiao who was holding a few sample essays and couldn't help it and asked, "Brother Du, is it really useful to read these books every day? The imperial examinations in the court were people who governed the country and were not doing such a variety of articles."

Du Zhongxiao put down the book and sighed, "Brother Su said it well. But although he has the ability to govern the country, he cannot become an official in the court and eventually die of an old age and an isolated village. Wouldn't that be even more sad? The court used this to win scholars, so I read such an article and did what the court said, and there would be no big mistakes."

Su Song shook his head, and Du Zhongxiao sighed again.

The Du family's small family naturally cannot be compared with Su Song, who came from a big family and his father was a high-ranking official. Su Song has laid a solid foundation since childhood, so of course he doesn't have to be like Du Zhongxiao, who only crams before taking the exam. Just like those of them, they are learning to learn truly, how can Du Zhongxiao compare?

At this moment, the prince's manager Du came over and saluted and said, "Little official, the pot you told me to make has been prepared. I don't know where to put it? This pot is awkward and looks like it is not steamed wine."

"Of course it's not steaming wine, it's used to bring fans. In such hot weather, steaming wine in the shed will be so hot that it's just awesome."

Du Zhongxiao stood up and said to Su Song: "Let's go, let's take a look. A few days ago, didn't you ask if the water was sealed in the pot and heated it, would it be blown up? There is nothing wrong these days, let's make a look."

Su Song was curious and followed Du Zhongxiao to the side of the wine-steaming shed.

Seeing that it was a big iron jar and a round barrel next to it, Su Song asked, "Brother Du, what is this for?"

Du Zhongxiao pointed to the iron can: "Fill water in it, let's boil it and see what will happen. Pass the water vapor into the bucket over there, and there is a plug inside, which is very fun."

While talking, Du Zhongxiao bent down to check the iron can and tube.

The original steam engine is so simple, heating produces steam, which leads to the cylinder to push the piston to reciprocate. The piston can be connected to various working mechanisms. The reciprocating type can be used to pull hands or lift, while the rotating type becomes universal power. The real complexity is accuracy and efficiency, as well as the power derived from it. Du Zhongxiao is just doing a principle demonstration now, and it is difficult to say what step he will go in the future.

The steam is drawn out by copper pipes, which are rolled up and soldered with copper plates. They are rough and too thick. The barrel is also copper, and they are polished and very smooth. There is a cast iron piston inside, which is very smooth.

Du Zhongxiao put a few things together, set them up, and called a servant to come and burn the fire. Su Song was curious and stood aside to watch.

After a while, the water in the iron can boiled, and water vapor came out of the crack. Du Zhongxiao smiled and said, "This thing is still a bit rough."

The water vapor was led from the copper tube to the copper tube over there, and the piston was slowly pushed aside.

Du Zhongxiao pointed to the piston and said to Su Song: "Did you see that there is water vapor coming in? This can be moved."

Su Song shook his head: "What's the use of this? I can push it with my hands."

Du Zhongxiao smiled and pulled a valve with his hand to block the previous copper tube. He opened the copper tube on the other side, and was pushed to the other side.

While repeatedly changing the two copper tubes, Du Zhongxiao said: "The water can be boiled. If it is not released, one will explode if it is not good. But this will lead to the water vapor, which is of such use. The plugs in the copper tube over there can be back and forth."

Su Song looked at it for a while and shook his head: "This thing is interesting at first glance, but it is useless to think about it carefully. It's so troublesome, it's better to find someone to pull the plug, which is as good as this."

"Brother Du said it badly. This thing is made simple now, of course it is of no use. But if it is made large and exquisite, it will be of infinite use. Think about it, as long as there is charcoal and water, the plug can be used by yourself, and many places can be used."

Su Song shook his head repeatedly: "It's still someone who needs to look at the tube and how to move the plug by itself? Besides, I really can't imagine where I can get such a thing."

Du Zhongxiao stood up straight and was stunned for a while. Suddenly he felt that Su Song was right, this kind of thing was quite boring. From the simple principle of the steam engine to the real steam engine, I don’t know how far it is. The story of his world has not yet begun, and it is really not worth it to spend time on such things. What he should do now is to study hard-

After shook his head hard, Du Zhongxiao took away these ideas and said to Su Song: "I think there are many places where this kind of thing can be used. For example, by the river, you can use this kind of thing to lift water; on the road, you can use this kind of thing to pull a cart; there are countless such things. But now this thing is too simple. As long as we do it ingeniously, it will be a different scene. Brother Su, there is nothing to do. After studying these days, we will do this thing and see what we can do."

"What's the point of doing?"

"Set a small goal first and use it to fan it. Now it's hot summer, and steaming wine is extremely stuffy. We use this as a fan so that the people in the shed don't have to be so sad. Once this happens, many uses will come out."

Su Song was interested in technology. After listening to Du Zhongxiao's words, he bent down to see the iron can and copper tube. After watching it for a long time, he suddenly felt that what Du Zhongxiao said made sense. This thing looks simple, but if it really can't stop going back and forth, it will have many uses.

Du Zhongxiao said: "This thing is now made in a simple way. If you want it to be really useful, there are still many things to do. For example, you cannot use people to exchange for this copper tube. If you want to connect the stuff on the plug, it is better to make the fan turn. Brother Su cleverly thinks, let's think about how to do it."

Su Song looked at the plug in the copper tube and thought for a while and said, "If this plug was brought with it a replacement copper tube, this thing would be interesting."

"I think so too. I need to add some mechanisms to connect the plug and the valve."

This kind of thing is difficult or simple. Du Zhongxiao studied engineering in his previous life, so it is difficult to make a connecting mechanism. The difficult thing is valve opening and closing and sealing. You can simply block it inside, and a practical valve is required for continuous switching. In this era, it is not easy to make a combined valve, and it is also sensitive to seal it, and it is also resistant to high humidity and high pressure, and it is necessary to overcome many technical problems.

The principle of the steam engine is not difficult for Du Zhongxiao. What is difficult is the various technical details. Some parts that were very simple in their previous lives had to start from scratch, and the workload was too great. According to Du Zhongxiao's idea, reading books every day these days is too boring, and doing such a thing changes your mind. In the end, it is enough to be able to make a principle machine. It is better to leave it to Su Song to slowly improve it. When you have the energy and opportunity in the future, it is not too late to improve it. In this era of steam engines, it is just too much time and energy.
Chapter completed!