11 years of Yonglong.

After the discovery of potassium, it didn't take long for Zhang Sui and others to discover sodium one after another.

On the other hand, Li Chong's side ......

It's okay to take Silla and the maid out to play together.

If Li Chong had at least wanted to work before.

So now......

It's like a complete retirement.

No way......

It can only be said that they are too complete together.

Now, he really can't find what else he can do next.

Besides, from time to time, he would teach the Silla maid and then let the Silla maid pronounce it in the pinyin of later generations.

Speaking of which......

This is a standard pronunciation, but it is a point that can be completed.

It's just that......

Datang has long had books such as cut rhymes.

In the end, this pinyin can be accepted by others.

To be honest, that's not quite a good idea.

Plus......

Compared with the pinyin of later generations, there are several different pronunciation methods.

This is precisely where pinyin may be insufficient.

If you want to forcibly promote pinyin.

Li Zhong felt that the difficulty was not necessarily too low.

And......

The reason why he wants to teach Silla in pinyin is not because of anything else, one, he feels that he gets along with each other and has nothing to do, so he finds something to do.

As for the second one...... In fact, he also wanted to teach each other to sing some songs.

Anyway......

It's pretty much used to pass the time.

By the way, while teaching, you can also carry out intimate actions to increase intimacy.

It's a lot of money.

Autumn of this year.

Datang's railways were finally built to Shanzhou.

In this way......

His potash fertilizer can also be transported to Datang in a steady stream.

Of course!

At present, the cost of using these potash fertilizers is still a bit high.

Because the process they use is dissolution crystallization.

It is necessary to use fire and a heating solution, so this method of producing potash fertilizer is of good quality.

But this energy consumption must not be underestimated.

However......

Compared with Datang's food security, this energy consumption seems to be nothing.

Li Chongyou considered whether to use solar energy for heating.

Is it to make a concave mirror and collect all the heat, maybe this can reduce some energy consumption?

And if you don't, you have to dig coal.

The key is......

It's not easy to dig coal.

At least......

In the vicinity of the potash mine, no coal mines have been found.

If it were to be transported from somewhere else, it would have to be at least a few hundred miles away.

Autumn equinox.

It's also a good time to plant winter wheat.

Li Chong also took Zhang Sui to plant winter wheat.

Li Zhong pinched a handful of potassium chloride and asked Zhang Sui, "Do you know what this is?" ”

Zhang Sui looked at the white crystals, which looked like evaporated crystallized salt.

All at once, it was in the mood.

He took it, fanned it gently, and sniffed.

"Is it salt?"

Next, it's almost a little rub and lick it into your tongue.

Li Chong said: "No, this is fertilizer. ”

"Although it looks very similar to the purified salt, it is not table salt, and after experiments, before cultivating wheat and when wheat is jointed and booting, if a certain number of these crystals can be applied to each acre, it can play a role in significantly increasing wheat yield."

"A conservative estimate is that the yield of wheat per acre can at least double or triple."

Since Zhang Sui couldn't get in touch with the affairs of the court at all, he naturally didn't know that there was such a thing.

Li Chong saw that he was stunned, and he was probably a landlord who had never planted much, so he also said: "Do you know what it means that the yield of wheat per mu has doubled or tripled?" ”

Zhang Sui is a scholar after all, although he doesn't farm, but he still understands very well what the role of this thing is, so he said: "This means that the annual harvest of the people of Datang is one to two times more than now, and the people don't have to starve, or even ...... Can you feed more people at home? ”

Li Zhong listened to this, and there seemed to be nothing wrong with this.

But I don't know why, I always feel a little bit wrong.

What does it mean to be able to feed more people at home?

It's almost enough to be able to feed one or two.

Fewer children and better children, a happy life.

It's really useless to give birth to so much.

But......

Li Chong still didn't say anything, but agreed with the other party's words and said, "Not bad! Exactly! The people of the Tang Dynasty will be able to get rid of famine and hunger completely. ”

"This ...... It's about learning and studying the role of chemistry! ”

Zhang Sui: "......"

At this moment, Zhang Sui felt that Li Chong's figure was so tall.

Zhang Sui immediately said: "In terms of loving the people like a son, I am not as good as Li Lao." ”

"But this ...... Why is this stuff a fertilizer? ”

Li Zhong then explained to him.

Among these white crystals was the potassium he had extracted earlier.

Of course!

Now the name of this thing is no longer called potassium, but according to Datang and Zhang Sui's own habits, it has taken another name.

But in any case, plants contain potassium, and wheat is a plant, adding potassium to wheat is conducive to the growth of wheat, because wheat itself may need this kind of thing, which is the most basic logic of why this thing can become fertilizer.

After listening, Zhang Sui suddenly understood.

Isn't this what the saying goes, what you eat makes up for what you eat.

Li Chong also said: "Of course, not everything can be used as fertilizer. But indeed! As long as you grasp the core of chemistry, in fact, you can synthesize a lot of fertilizers that crops need, and then scientifically increase crop yields. ”

"Chemistry is actually a science that can turn decay into magic."

"Even ......"

"Chemistry is studied to the depths, even if it is a little stone into gold, it is not completely impossible."

Zhang Sui looked at Li Chongdao with wide eyes: "Old Li ...... Is that really possible? ”

"Yes, but that's what I guessed, and I can't verify it."

"And ......"

"Even if there is such a method, it is not something that ordinary people can do."

"For example, you have to be as hot as the sun to turn stone into gold, but the question is, can you pluck the sun?"

"So...... It is precisely because the reaction conditions of this gold are very harsh and rare that it is precious. ”

Zhang Sui said: "Then Li Lao, can I understand that everything can be transformed into each other, as long as the conditions are met?" ”

Li Chong: "Almost. ”

Zhang Sui: "But how did the gold come from at the beginning?" ”

Li Chong said: "Then you have to think about this yourself." ”

Zhang Sui frowned suspiciously.

He always felt that Li Lao knew everything.

But......

The other party just doesn't say it.