I am cannon fodder, but I can hug thighs

Xi Tianrui looked at him with pity: "This senior must be a learned and insightful old man."

"Yes." Lin Jin could only smile and nod. She could only say this much. If she said anything more, she would be exposed.

Xi Tianrui was really studious. It had been a long time since she saw such a thirst for knowledge in the eyes of a man in his twenties. No wonder he could become the chief academic officer of the Imperial College at such a young age.

Lin Jin finally sent Xi Tianrui away. She also made an appointment with the Ministry of Households to check out the arable land today. After all, the previous method of improving saline-alkali land has opened up a lot of new arable land, which is now planted with salt-alkali-tolerant plants and fertilized. Now that there is a vegetable greenhouse, she wants to see if she can plant some plants in the winter to provide fertilizer, so that she can plant crops in the spring next year.

"Even if there is a greenhouse, I'm afraid I still can't grow anything. I can only find seedlings that are cold-resistant and salt-tolerant. I can try to grow wolfberries, but they may not survive." It's not that Lin Jin can't find crops, but those crops are not available in this era, and the system cannot provide chemically improved seeds.

She looked at the measured data and compared them with the seeds that could be planted, but found that none of them could be planted: "No way."

The people in the Ministry of Households had tried to plant the sweet stalks that Lin Jin had planted before, but the sweet stalks were not cold-resistant and could not be grown in winter.

"Then this land..." Kan Chengxuan was a little unwilling. The land that had been improved with great difficulty was not fertile now. Wouldn't it mean that it would be delayed for another year? "Is there really no other way? Or..."

"Or just consider the condition of cold resistance, and hope that it can survive on this improved saline-alkali land." Lin Jin could only think of this method. There are many crops that are drought-resistant and salt-resistant, but there are really not many that are cold-resistant and salt-resistant. Cold resistance can screen out 95% of the crops.

"After the saline-alkali land has been improved, it won't be as barren as before. It may still be able to survive. If you plant trees... it doesn't seem impossible. You can just pull them out later." If it's just for fertilizer, it doesn't seem impossible, but it's a bit of a waste of tree seeds.

Kan Chengxuan pounded his palm: "Seed!"

Since we can’t grow crops, we’ll just plant trees. We can plant crops as long as spring comes.

"Then let's plant sea buckthorn, the survival rate is higher." Lin Jin looked at the weather. Except for the areas around the cultivated land, other places were covered with snow. Now that they have vegetable greenhouses, basically every household will come out to clean up the snow as soon as it snows, for fear that the snow will collapse the greenhouse.

"I'll give you sea buckthorn seeds tomorrow." Lin Jin stood up, holding the sweet buckthorn harvested before the snow in her hand and eating it like sugarcane. This was her first time eating sweet buckthorn, and she thought it tasted pretty good, which just satisfied her craving for sugarcane.

Lin Jin and his friends walked all the way from the saline-alkali land to the land of ordinary people. They were all arable land, but except for the saline-alkali land, the official fields were much more fertile than the land of ordinary people. You could tell by just looking at the growth of the crops.

All the good farmland was in the hands of the government, and even if the common people had one acre of land, the crops they could grow were hardly enough to eat.

"Lord Kan, I remember that I had someone bring back methods for improving farmland during the spring plowing this year. Why do these fields seem to have not been improved at all?" Lin Jin didn't believe that there was fertile land without fertilizer. The quality of the land couldn't be so bad after a year. There was only one possibility: it had not been improved.

"But if we spend time improving fertilizers and don't grow crops, what will the people eat?" Kan Chengxuan sighed. They also wanted the people to grow better crops, but although they could improve them, how would they get through the year?

"Crunch." Lin Jin took another bite of the sweet potato. In the final analysis, it is still a question of filling your stomach. If you don't improve the soil and fertilize it, you may not be able to eat enough. It will be a bit difficult in the winter. If you waste this time, you may not live to see the next year.

"I'll think of a solution." Lin Jin also sighed, "I'll always find a solution."

In addition to seeds and farming methods, the fertility of the land is the most critical issue. Without various fertilizers in the future, only natural raw materials can be used for fertilizer.

The more you plant the land, the more fertile it will become, but it needs to be planted scientifically, otherwise the opposite will happen.

"Madam, there is one thing I have never understood. Who is your teacher? You know a lot about astronomy and geography." Kan Chengxuan looked at Lin Jin secretly. If he hadn't seen it with his own eyes, he wouldn't have believed that the person who had turned the world upside down during this period of time was actually such a little girl.

Who on earth is this person's teacher? How could he teach such a student?

Lin Jin paused and sighed slightly: "Learn from... a country that follows the socialist path."

"What... country is this?" Kan Chengxuan was wondering if Daxia had ever recovered such a country. He didn't seem to have heard of the socialist road either. What kind of road was this?

"It's a country far away." Lin Jin smiled at him, "Don't worry about it. If we are destined to meet, we will meet in the future. This country loves peace and respects life. If we meet, it will be a good friend of Daxia."

So far away that one has to cross the long river of time to see it.

Kan Chengxuan nodded, not quite understanding, but he also knew in his heart that Lin Jin was unwilling to say more: "So that's how it is, Madam is really knowledgeable."

Chang'an is far away from the firewood production area. In addition, with the increase in construction in recent years, wood consumption has also increased. There is a shortage of firewood for making fires for heating in winter, so coal is transported from Taiyuan Prefecture every year.

The quantity of coal is large and the price is much cheaper than charcoal, so people can afford it. However, incomplete combustion of coal will produce toxic gas. In winter, people close the door and light fire to keep warm. Even if the air is not sealed tightly like in the future, the air circulation is not very smooth, and many people will still be poisoned in winter.

In the few days when Lin Jin started using coal in Chang'an, she met a family who were poisoned by carbon monoxide due to this reason. Fortunately, she found them in time and rescued them. Later, she began to educate people about the importance of ventilation when using coal.

The people of Chang'an basically use coal for heating. Although this kind of thing happens every year, these people are only a small part of the people. They know that it is coal poisoning, but they don't know the principle. Everyone else is fine, but the coal in those people's homes produces poisonous gas, so they just think that those people have bad luck.

Nowadays, every household that burns coal for heating will leave a crack in the door, not too much, to allow the air to escape. After all, if the door is opened wide, the wind will be strong and the coal will burn faster.

Fang Yuzhu sat on the rocking chair that Lin Jin had someone make, eating some fruit while looking at the physics materials Lin Jin had sorted out. "Although these strange things you made are not worthy of being displayed in public, they are still quite interesting. Ask someone to make one for me later."

"I thought you would say it's insulting." Lin Jin was copying the knowledge points from other professional books. "Last time you said you couldn't understand these things and it gave you a headache. How come you are reading them with such gusto today?"

"It's a headache to read, so I just took a look. After all, this subject is very popular now." Fang Yuzhu looked at the words on it and felt a little sleepy. But she heard that some people were very interested in these things. "How did you come up with these weird numbers on it?"

"I didn't come up with this idea. I just borrowed the wisdom of others." Lin Jin shook his hands. "Are you here to avoid being lazy today?"

"Of course not. The women's academy you opened only accepts women and not men. However, there are some men in Beijing who are very interested in this thing. Your favoritism will probably cause dissatisfaction." Fang Yuzhu put the book aside and teased Lin Jin with a gloating look.