Sleepless night.

It was a sleepless night.

Under the left and right hugs of the two, Cao Yi really couldn’t sleep.

After the two fell asleep, Cao Yi quietly got up and sat on the ground.

“System Mall!”

With a thought, the page of the system mall instantly appeared in front of Cao Yi’s eyes.

Looking at the prestige point, it is already approaching 60,000 points.

Without saying a word, Cao Yi directly exchanged the seeds of potatoes.

After this sub-exchange, the system can supply unlimited quantities.

So don’t worry about not having enough seeds at all.

In fact, 60,000 prestige points can also be exchanged for some seeds of fruits and vegetables.

Such as tomatoes, watermelons and so on.

Although these fruits and vegetables are delicious, they are far less edible than potatoes.

What needs to be done now is to increase food production.

The ripening cycle of potatoes varies from place to place.

It basically matures in two to three months.

According to the system, this sub has been systematically improved.

No matter where you cultivate, it takes only one and a half months at the fastest and two months to mature at the slowest.

And it can be sown regardless of the season, and it can all be mature.

The mu yield has reached an output of 5,000 jin.

This production is already very impressive in modern times.

During the Three Kingdoms period, one stone of grain was equal to about 120 catties.

Five thousand pounds is almost forty-one and a half stones.

This output cannot be described as astonishing during the Three Kingdoms period.

During the Three Kingdoms period, not counting natural disasters, the yield of corn per mu was only about three stones.

Directly doubled more than a dozen times!

Therefore, potatoes are bound to be taken.

Even if it can’t replace corn as the main meal, it is enough to fill the stomach.

After exchanging potato seeds, Cao Yi glanced at the system mall somewhat aimlessly.

In fact, Cao Yi intends to exchange some more useful drawings.

However, the restrictions of the times are too serious, and although many drawings are cheap, they are basically confused after exchange.

Among them, Cao Yi even saw drawings of firearms.

If this thing can be built, there is basically no need for an army of 800,000.

A thousand people, one with a gun.

As long as there are enough bullets, the world can be calmed.

But to want to build firearms from scratch during the Three Kingdoms period is simply a fool’s dream.

At this moment, Cao Yi saw something interesting.

“It’s better to change this…”

……

Following.

The sky has just revealed the white belly of the fish.

Cao Pi got up early and walked to the county guard’s mansion.

Unexpectedly, as soon as he opened the gate of the county guard’s mansion, he saw a familiar figure sitting in front of the case.

“Ei’er?”

Cao Pi couldn’t help but be stunned:

“Why did Ei’er wake up so early?”

Cao Yi’s face was solemn, and he lowered his head and kept looking at the map of Jiangdong:

“Father thinks that how long will it take for my eldest father to completely settle down in this campaign against Jiangdong?”

Hearing Cao Yi’s rather unprovoked words, Cao Pi couldn’t help but frown.

After much thought, Cao Pi spoke:

“Thousands of miles in the hinterland of Jiangdong, all the people are soldiers now.”

“Although we have captured a county town, it is not easy to stabilize it.”

“I’m afraid, at least for more than three months.”

Cao Yi continued to speak:

“No, the people of Jiangdong are all soldiers, fighting hard, and the people’s hearts are unstable.”

“In this case, it will take at least a year.”

Hearing this, Cao Pi was not surprised.

Three months is just the number that Cao Pi can think of in the most ideal situation.

What is more difficult than stepping into the territory of Jiangdong is to completely pacify Jiangdong.

Now there is still Liu Bei obstructing it, and it will indeed take a year to completely pacify Jiangdong.

“Why did Ei’er mention this all of a sudden?”

“Could it be that you want to return to Xudu earlier?”

Cao Pi couldn’t help but wonder:

“If that’s the case, go back with your mother for some time.”

In Cao Pi’s heart, Cao Yi is still a child after all.

I haven’t returned to Xudu for so long, and it’s normal to feel homesick.

Cao Yi shook his head and said:

“I was thinking, can our army’s grain and grass really last for a year?”

Cao Pi couldn’t help but be slightly startled:

“It should be possible…”

“There are many good fields in Jingzhou, which should be enough to supply.”

Cao Pi said very unconfidently, after all, he didn’t know much about it.

Cao Yi shook his head and said:

“No way.”

“Even if all the grain and grass captured from the Cai family are supplied to the front, they can’t last a year.”

“What’s more, the northern grain and grass are also tight.”

“Jingzhou has been suffering from drought for years, and the people can’t let them have no food at all.”

“If this is the case, the grain and grass may be enough, but without the people’s will, Jingzhou will be in chaos, and the consequences will be unimaginable.”

At this moment, Cao Pi couldn’t help but face Cao Yi’s words.

I have never thought about this question myself.

If you think about it carefully, if it really takes a year of battle, once the grain and grass are not enough, even if the soldiers and horses are strong, it will not help.

“So, I should find a way to increase food production.”

“It’s good to supply the needs of the army.”

As Cao Yi spoke, he groped out a small cloth bag beside him and handed it to Cao Pi.

“What is this?”

Cao Pi couldn’t help but be stunned, picked up the cloth bag and looked inside, muttering:

“This is… Seed? ”

Although Cao Pi didn’t care much about grain and grass, he still recognized the seeds.

But this seed looks very strange, and it doesn’t look like a corn seed in any way.

Cao Yi smiled slightly:

“This thing is the seed of a potato.”

“This thing can be harvested once in about two months, and the yield is about forty-one stones per mu.”

“It’s easy to feed your stomach and replace corn.”

“If it is planted, it will definitely solve our army’s grain and grass problem.”

When he first heard the word potato, Cao Pi was still a little confused.

But after hearing what Cao Yi said later, Cao Pi suddenly became a little unnerved and said with a smile:

“Ei’er didn’t wake up?”

“Harvest once in two months, yield forty-one stones per mu?”

“Who gave you this thing, what kind of nonsense?!”

“Even though I don’t care about farming, I know that the yield of corn is only three stones per mu.”

“If there were such a high-yield thing, there would not be so many starving people in this world.”

In the past, Cao Pi accepted anything or opinions that Cao Yi came up with, with a serious face.

But this time, he really couldn’t accept it.

Isn’t this nonsense?

Forty-one stone per acre?!

It’s a dream!

However, Cao Yi looked at Cao Pi with a serious face and said in a deep voice:

“Ei’er wasn’t kidding.”

“This thing is really so amazing.”

“It’s just that you need to cultivate it.”

“Once successful, Mo said that the military food needs this time is enough, and it can completely solve the food crisis in the world!”

Cao Pi frowned and said:

“Ei’er, you are so astute on weekdays.”

“Why are you confused today?”

“Who the hell is confusing you?”

“This is impossible!”

But as soon as the words fell, Cao Pi saw Cao Yi’s solemn face, full of undoubtedness.

“Are you really serious?”

Cao Pi looked at Cao Yidao with round eyes.

On weekdays, Cao Yi has always looked light, as if everything is under control.

He had never seen Cao Yi look so serious.

This made Cao Pi can’t help but put away his thoughts and try to speak:

“Is this thing really so amazing?”

Cao Yi said in a deep voice:

“You can try.”

“Although Jingzhou is in drought, the land is fertile.”

“If you only cultivate ten acres of land, it is not difficult to take care of it.”

“Once successful, it will definitely solve the crisis of our army.”

Seeing Cao Yi say this, Cao Pi also had to look at the potato seeds in his hand and nodded:

“Well, since Eier is so confident, I will accompany you crazy for my father.”

You know, it is nothing to casually engage in ten acres of experimental planting in Xudu.

But this is Jiangxia.

Jiangxia was already unstable and did not have enough grain and grass.

At this time, if ten acres of land are forcibly requisitioned.

If nothing has been planted, it is bound to cause public unrest.

Cao Pi’s initial reluctance to agree with Cao Yi’s idea was precisely for this reason.

But now that Cao Yi is so determined, Cao Yi no longer thinks about it.

But ten acres of land is only a big deal, and it is just a matter of spending some silver and two to compensate the people.

However, Cao Pi is still not optimistic about this thing called potatoes.

Forty-one stones per acre sounds nonsense.

Cao Pi would definitely not believe this kind of thing that went against common sense.

If it weren’t for Cao Yi’s firmness, I’m afraid Cao Pi would have directly forked out the person who made this statement.

“Can you be here?”

At this moment, Mrs. Bian’s voice came from outside the door.

Cao Yi said in a deep voice:

“Father, don’t let anyone else know about this for the time being.”

“Just send some soldiers to plant.”

“If it spreads and is known by Jiangdong and Liu Bei’s spies, it will be bad.”

“Once this thing is successfully planted, it will be directly sent to the north for large-scale planting.”

“Once harvested, it is enough for the world to eat!”

Cao Pi nodded somewhat perfunctorily.

After all, he still didn’t believe in his heart that such a magical thing existed.

“Ei’er got up quite early today.”

“I didn’t use breakfast, how can this work?”

Mrs. Bian walked in with Zhen Mi, and when she saw Cao Yi sitting in front of the case, she couldn’t help but feign anger:

“Quick, go to breakfast with the eldest mother.”

“Just leave these things to your father!”

Speaking of which, Mrs. Bian couldn’t help but pick up Cao Yi directly.

Cao Yi was suddenly wrapped softly in his arms again, and he couldn’t breathe at all.

In this way, Cao Yi was taken away abruptly.

“Mother, this Jiangxia’s meal is really difficult to swallow.”

“Ei’er really can’t eat it.”

Cao Yi looked at the food on the table, and had no appetite at all.

Accustomed to big fish and meat, heavy salt and spicy.

In fact, after coming to the Three Kingdoms, Cao Yi was not used to eating at all.

If it weren’t for the systematic leaning body, Cao Yi’s body would have been tempered to a level far beyond the reach of ordinary people.

So much so that even if Cao Yi did not eat for several months, he only drank water without pressure.

Otherwise, it is estimated that Cao Yi will starve to death here.

“Ei’er is only five years old, why is she such a picky eater?”

Mrs. Bian said with some displeasure.

At this moment, Xu Huang’s voice came:

“Little master?”

When Cao Yi heard this, his eyes immediately brightened, and he said to Zhen Mi and Mrs. Bian:

“Mother, mother, show you a baby!”

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