Xiao Yu thought for a moment and replied, "Wind power? But the wind is not as powerful as the hydrodynamic force, so it's not very useful, right? ”

"That's fine, but don't underestimate the power of the wind, as long as you use it properly, it won't be a problem for me to take you all over the sky in the future. "Wang Haoran thought of airplanes at this time, and peasant uncles in the 21st century can make airplanes by themselves, so he doesn't believe that a college student called a "little encyclopedia" can't develop it.www.biquge.info

"Is there any other motivation for that?" Xiaoyu, who has always believed in her brother, obviously doesn't believe Wang Haoran's words now, and just thinks that he is coaxing herself, so she doesn't care much.

"There are many more, such as the sunlight outside can also be used, and the boiling water can also be used...... Everything has its own energy, but it may manifest itself in different ways, some in the form of heat, some in the form of movement, and some in need of something else to break its balance in order to manifest its energy. Wang Haoran also saw that Xiaoyu didn't believe his words, but he was not disappointed, this is not a bad thing, people with their own ideas can have their own creativity.

"Oh." Xiao Yu replied as if she didn't understand, and asked, "What are you using this grinder for?" ”

"To make a steel ball is a small round iron ball." Wang Haoran was accustomed to Xiaoyu's jumping questions, and patiently explained, "When this grinder is assembled, it can be connected to the hydrodynamic equipment and rotate all the time." Then I will put many small pieces of hard stone and sand, iron powder, and small iron particles from the cast iron shop in the morning. Because the bucket is oblique, when it turns up, the stones and sand inside will roll very much, and they will rub against each other, and after a certain period of time, the small iron particles will be rubbed into small round iron balls. ”

"How do you know that this little piece of iron is going to turn round in the end? It could take on another shape! ”

Wang Haoran knew that Xiaoyu would ask such a question, and replied: "The so-called Mu Xiu will be destroyed by the forest wind." Imagine that a small, irregularly shaped iron particle is surrounded by sand and stones, and if it rotates, where is the most stressed? ”

"Where there is the most protrusion, there is the greatest force." Xiao Yu thought for a moment before replying.

"That's right. The greater the force, the faster it will be ground and eventually the small iron particles will become spherical. However, it is impossible for this ball to be ground into an absolute circle, because in the process of grinding, it is also possible to grind too many times in some places due to uneven force, but this probability is very small, and it is this small probability that the ball cannot become absolutely round. But the difference between this round ball and the absolute circle is not very large, and it does not affect the use, which is enough. ”

It didn't take long for several workers to assemble the grinder. Wang Haoran instructed them to pour the prepared stones, sand, small iron particles, etc. into the large iron bucket, and after pouring water, let the workers connect the grinder to the water power. As soon as it was connected, the big iron bucket was buzzing, the speed was not fast, and it didn't need to be fast, as long as it could last.

Wang Haoran watched the grinder work for a long time without any problems, so he called a worker and told him to come over often to see, what situation to add water, what situation to change stones and sand, etc., and then took Xiaoyu out of the grinding room.

It was still early, so Wang Haoran took Xiaoyu to the carpentry room to see the progress. Before he entered the carpentry room, Wang Haoran heard a chagrined roar from inside.

"Still not successful?" You don't need to ask Wang Haoran to know what the problem is, a few days ago I started to do the self-tapping screws drawn by Wang Haoran, I never succeeded, the reason is that this thing is too small, and the teeth are too sharp, and we should pay attention to the size of the thread screwing to be consistent, and the tooth tip will be cut if you are not careful.

"The little master is here!" The two carpenters in the carpentry room stood up and greeted.

These two carpenters are father and son, and they are quite famous in the carving industry. The old man is nearly sixty years old, and his surname is Chen; The young one is nearly twenty years old and is called Chen Jun.

Chen Jun complained to Wang Haoran: "Little master, this little thing is too difficult to make, you see that all of them on this table are scrapped." ”

"It seems that it is really difficult to do!" Last time, Wang Haoran came to see it, but he just asked the two fathers and sons to study how to carve it again. If you don't have this little thing, you can assemble the frame in other ways, either the equipment can't keep up, or it will be assembled to affect the appearance.

"Why don't you try that craftsman in Xiaoxi City, young master?" Chen Jun offered advice.

Lu Jianggong is the descendant of that Lu Ban, Wang Haoran still has an impression, and he went to his shop to order the probe and cork of the stethoscope before, but he has not seen that Lu Jianggong.

"Let's think about whether there is any other way, for decades, the old man has never heard of what Lu Jianggong has done to people other than princes and nobles." Chen Chuangan, an old craftsman, said.

"I've thought of everything I can think of, what else can I do?" Chen Jun has been upset and irritable by this little screw for the past few days.

"Well, let's put this little thing aside first, and make the other drawings first. I'll also ask Lu Jianggong, if it really doesn't work, I'll think of other ways. Wang Haoran said.

The young owner made arrangements, and the two carpenters naturally would not object. Out of the carpentry room, Wang Haoran wanted to call Han Niu to find Lu craftsmen together, but he couldn't find Han Niu, and looked around only to find Han Niu talking to an old man in the cement cellar. This old man Wang Haoran vaguely has the impression that it is Zhou Kang, his ---father, who is a farmer, because he is now over the busy farming period, so he works here to earn some money to supplement the family.

"That's right! I haven't arranged my ten acres of land yet! As soon as he mentioned the farmers, Wang Haoran remembered his miscellaneous rice, although there is no need to rush this matter, anyway, it is still early before the sowing period, but the earlier the arrangement of good people can also worry less about some things!

So Wang Haoran stepped forward and asked, "Uncle Zhou, are you working here?" ”

Shinong industry and commerce, this is a deep hierarchy in the hearts of the people, although Wang Haoran is rich, but not noble, in front of the peasants who are two levels higher than him, although there is no need to grovel, but politeness still has to have.

"Little master." Zhou Kang said, "Isn't there nothing to do in the field now, so I'll come to work and make some money." ”

"That's good! I didn't know Uncle Zhou would build a wall. ”

"There's no way, I'm waiting for dinner at home, and if I don't have anything to do in the field, I'll do work for others, and I've done all the hard work." Zhou Kang is very talkative, but Han Niu has not inherited this.

"By the way, this place will be completed in a few days, and I still need manpower to build the wall elsewhere, I wonder if Uncle Zhou has time?"

"Yes, yes, I was just worried about where to find a job after finishing here?" Zhou Kang said excitedly.

"Then you can go to my house to find me after you finish doing it here, the work over there is not in a hurry, you can do it slowly alone, or you can find someone to be a helper, and how much it will cost will be discussed later." Wang Haoran said directly, "By the way, Uncle Zhou can read?" ”

"Ah...... This...... The old peasants were illiterate. "Zhou Kang is a little confused, do you have to be literate to build a wall? Besides, reading and literacy is something that only rich families are capable of doing, and he is just a poor peasant, how can he have the ability to read and write? !

Wang Haoran thought about it, he planned to hand over the matter of planting rice to Zhou Kang, but the various varieties of rice had to be distinguished, and in the future, all kinds of miscellaneous rice would have to be distinguished and registered in detail. Alas! It's still a little troublesome, as long as people can show all kinds of miscellaneous situations in numbers, so they asked, "Can you write that number?" ”

"This will be, but the old farmer has never used a pen, he only knows how to write." Zhou Kang's frustrated mood ignited a glimmer of hope.

"Is Uncle Zhou familiar with rice planting?" Wang Haoran suddenly remembered that there are people here who grow upland rice or wheat or the like, although this Zhou Kang has dark skin and thick palms, and he knows that he is a hard-working farmer at a glance, but what if he has never planted rice?

"Absolutely! When it comes to farming, there is no old farmer who can't. ”

"That's fine. That's the case, I have ten acres of fertile land outside this city, and I need to sow and plant seedlings at that time, as well as things like post-management, I wonder if Uncle Zhou can help? You can open the number of labor money, how many people you need to find to help, how much it costs, I will give you money in advance, but you have to find someone to help yourself, I can't find someone at such a young age. ”