When Lin Banxia considered squeezing soybean oil, he considered the agricultural and sideline industries that followed.

She nodded and said: "The soybean cake left after squeezing soybean oil is also a good feed, and you can feed chickens and pigs." However, the most fundamental thing is to increase the area of land that can be cultivated. ”

Lin Banxia thought about the tractor in her previous life, all kinds of sowing and harvesting machinery that she couldn't name at all, and her mind moved.

She remembered the plow she saw in her roommate's house, what was the plow called?

At that time, those of them who had never seen the rural world in the city studied it carefully.

That's right, it's called the "curved plow", and it is said to be the best plow before the advent of mechanical ploughing.

"It's easier said than done to increase the area of arable land." Shen Cheng sighed.

"It is not easy for a strong laborer to take care of ten acres of land. The whole family has to go to the field when farming. ”

Shen Cheng remembered that Lin Banxia was born in the countryside, and these things were much more familiar than him, so he shook his head slightly and stopped talking.

Lin Banxia also nodded, looked at the blackboard full of numbers, and suddenly said, "Make me a blackboard too." ”

Xia Changyan's expression in the study became more and more difficult to look at.

When Lin Banxia and Shen Cheng met for the first time, they were able to talk happily. but rejected his repeated overtures.

He turned back to his desk, grabbed the crumpled rice paper, and slowly unfolded it.

The three words "the beginning of man" are twisted with the folds of rice paper.

Xia Changyan's eyes narrowed, and he rethought Lin Banxia as a person.

Wang and Lin's father were brought back to a courtyard in the palace in the evening with their two children.

As soon as I entered the courtyard, I saw a black board hanging in the courtyard corridor, and Banxia was drawing something on it.

"Banxia, this is ......"

Wang looked left and right, and then looked at the maid who led them in without knowing at all.

"Mother, father, you're back." Lin Banxia put down the chalk and jumped out of the corridor.

"The prince left us here for a few days, mother, you are tired, the hot water is ready, wash and eat."

Wang was a little surprised, but also a little surprised, and pulled the two children into the house.

"Dad, can you recognize what I'm drawing?" Lin Banxia pulled Father Lin to the edge of the corridor and pointed to the things drawn on the blackboard to show him.

Lanterns hang above and on the sides of the blackboard, illuminating the blackboard.

It also clearly reflects the zigzag plough rake outlined on the blackboard.

Father Lin squinted and watched, and then jumped over the railing of the cloister like Lin Banxia and stood in front of the blackboard.

"This is ......" Father Lin's fingers lightly touched the pattern on the blackboard, and stopped in the air above the two obvious changes in the curved and short wheels.

"Dad, do you think it would be better to improve like this, and this plough pan can be turned."

Lin Banxia's drawings are not very good, just this simple picture, she has repeatedly revised it many times, and there are still deviations from her memory.

"Can I crush the dirt here? Knocked the dirt to the side? Can it still be turned here? This place, this place......"

Lin Yi looked at the picture and kept gesturing with his hands, his face was slightly excited.

Suddenly turned his head to look for tools, and when he saw the courtyard corridor, he was stunned.

"Dad, can you make it?" Lin Banxia believes in his father's craftsmanship.

The original crossbow was made by my father with an axe and a firewood knife.

"Yes." Father Lin's voice had never been so powerful.

"Dad, you go to the rest meeting first, I'll find someone to get you tools."

Father Lin nodded, but he still stood in front of the blackboard, his fingers gently hanging in the air and touching, as if he was afraid that the lines on the blackboard would disappear if the strokes were contaminated.

There were people waiting inside and outside the small courtyard, and when they heard that Lin Banxia didn't dare to slack off on what they wanted, they reported directly to the housekeeper.

After a while, seven or eight people moved a lot of things back and forth, and the yard was almost full.

There was also a maid in the middle who brought the meal, and Lin Banxia almost ate first according to Father Lin.

The food in the prince's mansion is so exquisite, but it's a pity that Father Lin devoured it and couldn't wait to start work in the courtyard immediately.

Lin Banxia also had to eat in a few bites, and followed Father Lin to the courtyard.

There were also two carpenters standing in the courtyard, waiting to be ordered.

I had to ask if I could have dinner first, and the two of them were honestly afraid, saying that they had already eaten before.

After seeing the pattern on the blackboard, like Father Lin, he immediately became excited.

I only asked a few vague places, and immediately the sound of sawing wood came from the yard.

Poor prince's mansion, which courtyard is not full of flowers, carved railings and jade.

On the day Lin Banxia moved in, there were constant clanging sounds, and the sound of sawing wood came and went.

Father Lin is a good hand at cultivating the land, and just by looking at the map, he knows where the changes are meaningful.

The two carpenters are also working beautifully, and they have not done less than the previous rake, and a few data that Lin Banxia is not clear about can even be supplemented by themselves.

Xia Changyan had dinner with Shen Cheng and Zhou Sheng, and they all sat in the study again.

Zhou Sheng talked about the pressing machinery made during the day: "The craftsman can make a simple one, and the gear that Lin Xiangjun said should be fine in workmanship, and it will not be completed in a while." ”

Shen Cheng also said: "The gears are interlocking, and the difference is a millimeter, and it is a thousand miles wrong. With existing tools, it is not easy to make. ”

He also said: "If the vegetable oil is squeezed from soybeans, it can relieve the suffering of poor diet of the people's livelihood, and benefit the people of Li like tofu."

It's just that soybeans produce oil, Lin Xiangjun said that the lowest one percent can be produced in ten percent, although the remaining soybean cakes can be used as feed for pigs and cattle.

But soybean oil is tantamount to competing with the people for food. ”

Xia Changyan nodded slightly, but said, "What do you two think, Lin Xiangjun?" ”

Shen Chengxian said: "Lin Xiangjun is quite proficient in arithmetic, and he seems to have a specialty in Gewu.

The measures proposed, casual and savored, are all measures for the benefit of the people.

Let's just say that this blackboard has only one wood and a little plaster, and you can write on it repeatedly.

If placed in a school, one teacher can teach dozens or even dozens of students at the same time.

Students can also practice repeatedly on the blackboard to save paper and reduce the cost of reading, which is a great benefit.

The minister thought that Lin Xiangjun should be recruited by His Royal Highness. ”

Xia Changyan was expressionless and looked at Zhou Sheng.

Zhou Sheng also nodded and said: "The tofu, sugar, and soybean oil mentioned by Lin Xiangjun are all related to the people's livelihood, which shows that Lin Xiangjun has the people of Li in his heart, and the people of the world are alive."

The blackboard technique mentioned is also to see the big from the small and the overall situation from the small.

Chen thought, in Lin Xiangjun's heart, there were still a number of measures that could not be implemented.

Your Royal Highness, the minister also thought that Lin Xiangjun should be recruited under His Royal Highness. ”

Xia Changyan looked at Shen Cheng and Zhou Sheng, his brows furrowed slightly: "Recruiting subordinates?" ”

Zhou Sheng and Shen Cheng glanced at each other, and Shen Cheng said softly: "Your Highness, a person who has always had a plan will not be willing to be buried."

Lin Xiangjun can't be treated like an ordinary woman. ”