Li Zhen is gone.

After a month and a half in the West State, he finally left the West State.

It was quiet, and only a few people such as Xun Shifei knew in advance. But they didn't send it, because Li Zhen refused them to send it off, saying that they would come back. And will be back soon.

When Li Zhen got on the airship, the people of Xizhou knew why Li Zhen went back.

He wanted to go back and develop a machine to replace farming, so as to add fuel to the country's food plan.

After this news came out, it quickly spread throughout Xizhou at a very shocking speed. Passers-by know it.

"Dean Li said that he wanted to develop a machine for farming."

"What? Can you still use a machine for farming? How do machines farm the land, and you have to use people to farm the land. Can machines help cut rice? ”

"It's impossible to think about it. By the time Dean Li researched these machines, the daylilies were cold. ”

"Not really. Machines are used to pull goods, and it is enough to replace mules and horses. ”

"Can machines replace cows? In the paddy fields, the cattle can go, but the machines certainly can't. ”

"Are you so sure that Dean Li can't study it?"

"It's not about questioning Dean Li. It's that this kind of thing is simply fantastical. Will the machine plant rice? Will the machine sow seeds? Will the machine plow? ”

This time, Dean Li was a little whimsical. Science is something that sometimes really doesn't apply everywhere. ”

“……”

Including Xun Shifei is also suspicious.

Can Li Zhen really research such a machine?

He couldn't help but think of the night when Li Zhen met him in Zhongzhou, when he said that he could start the mechanical age. But then, Xun Shifei figured it out, maybe it was just a young man's dream and wish.

Although now the Kyushu Academy of Sciences is playing a huge role in various fields.

But sometimes we have to admit that science also has shortcomings. It doesn't solve all the problems.

Perhaps, science can only be used in the military.

At least the Kyushu Academy of Sciences can make people fly and develop cars.

But what else?

In fact, many people are more laymen on this point. Probably only people who are really engaged in science can understand that it can really play a role in various fields.

Because the original intention of science is to serve mankind.

It was born to solve problems that cannot be solved by manpower and bring convenience to people.

However, several major achievements have led to misunderstandings. I think maybe science is used at a high level.

It doesn't need to be on the common people.

This is exactly wrong. It can be high-end, but it can also be ordinary.

Whether everyone believed it or not, Li Zhen returned to Laoshan a few days later, and held a meeting with the Kyushu Institute of Physics to express his thoughts.

Li Zhen said: "First of all, we have to solve the simplest problem, which is also the most needed problem at the moment. It's in place of cattle. ”

"Ploughing is required to farm the land, and oxen are limited. The workload of a cow is also limited, and many ordinary people cannot afford to use the ox to plow the land. What we need to do is to develop a machine that completely replaces the ox, has a greater workload than the ox, and does not know the tiredness. Do you have any ideas for this goal? ”

Li Zhen took a sip of tea and stopped speaking.

Everyone was silent for a while, Ma Jianbin took a cigarette puff, stood up and spoke:

"It's not difficult."

"Dean Ma has any thoughts, tell me about it."

"Ploughing the field and plowing the land is just a driving force to move forward. Whether it is a steam engine, a two-stroke engine, or a four-stroke engine, it can replace the forward power. And we just need to add a plow behind such a power machine. It is equivalent to developing a motor vehicle, adding a plow to the rear of the car, which can perfectly solve this problem. ”

Li Zhen nodded: "What you said is very right, and what you said is very good." But the big question is, if it's a car, how do you move forward in the paddy field? It's a muddy pond. Do you have a solution to this? ”

Another student from the mobile academy said, "This is not difficult. First of all, the speed of this plough machine does not need to be fast. Then sacrifice speed and increase power torque, and this is solved. Cattle can only step on the ground with four hooves, so they are relatively flexible. As long as the power of the plough increases, even if it is a wheel, it can move forward in the field. ”

"To do that, I think, four wheels will definitely not work. You have to use two wheels to make the shape of a trolley. The person walks behind, the plough is driven in front, and the person only needs to use the steering rod to control the direction. Of course, this wheel has to be a little special. ”

"How special?"

"The rims have to be big, they have to be off-road. Walk with big feet to walk steadily. The ploughing machine is actually not difficult, Master Li will hand it over to our mobile yard, and the drawings will be taken out tomorrow. ”

Li Zhen nodded: "That's good." The mobile institute took the initiative to receive the order, and the plough machine was handed over to the mobile institute for research and development. I have only one request. ”

Saying that, Li Zhen said seriously: "The cost should be low, as for how low, the lower the better." It doesn't matter if it's simple, but it will definitely make it affordable for ordinary people. It's definitely less than the price of a cow. There's not much technology, it's just two wheels, one engine, so you have to do it yourself. ”

Less than the price of a cow.

The people in the mobile courtyard couldn't help but frown again.

If you want to talk about the technical content of the plow, in fact, there is no technical content. It's just a driving force for progress. But the cost is lower than the price of a cow, which is embarrassing.

Just how difficult this is, you can see it in one question. What is the price of the car? What is the price of cattle?

A four-stroke car costs more than a thousand gold coupons, how much is a cow worth? It's only two or three hundred gold coupons.

The core technology of the plough is the engine. But it's just that the cost of this engine is high, how do you compress the price? The Kyushu Academy of Sciences is not bad for money, but there must be a factory to build it, right? The factory must make money. If the technical content is slightly higher, the cost will soar exponentially.

Li Zhen frowned: "Can it be solved?" ”

Ma Jianbin pondered for a long time, gritted his teeth and said, "Yes." ”

Li Zhen turned around and said: "Ploughing machine, my plan is to implement it in Xizhou first. Not much, every village can afford one. But then came a trickier job, the labor force in Western State was too small, the elderly were the majority, and the labor force of the elderly was limited. So rice transplanting is also a technical job, do you think it is possible to develop a rice transplanter? ”

Ma Jianbin and a few people discussed it, most of them were also born with mud legs, and they are no strangers to the farm work of rice planting. After discussing the principle of rice transplanting, I felt that there was no technical content in rice transplanting.

But no one dared to speak.

Because, since it is to be used for farming, the cost must not be high. Li Zhen must also say that the cost should be reduced.

Then this one is not easy to do. The core power of the rice transplanter is also the engine. If the engine cost of the plough machine is solved, the rice transplanter can also be solved.

The problem is that the rice transplanter is on top of the engine, and it definitely needs a lot of external facilities. This is a mechanical structure that replaces the action of human rice transplanting. These are not difficult, and the people in the mobile yard can draw a drawing of a rice transplanter as soon as they soak in urine.

The problem is back to square one. It's still a question of cost......