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Liu Bing was indeed frightened before.

When he was outside the door just now, he had already heard the conversation between Gao Ming and Li Shimin, and with his understanding of Li Shimin, he knew that Li Shimin would never let him go.

If it weren't for the trust in Gao Ming in his heart, Liu Bing would have had an urge to run away immediately.

However, trust is trust, but Liu Bing's heart still has no spectrum in his heart about whether Gao Ming can convince Li Shimin, so he can only pray secretly in his heart, hoping that God will bless Gao Ming to successfully persuade Li Shimin.

In Liu Bing's anxious mood, Gao Ming's door finally opened, and Li Shimin also came out of the house.

Seeing this scene, Liu Bing hurriedly lowered his head, and at this time he felt that his heart was about to jump out of his chest.

"Has His Royal Highness the Crown Prince convinced His Majesty, and if not, what will happen to me?"

Thinking of this, a drop of cold sweat immediately flowed down Liu Bing's forehead.

But fortunately, Li Shimin didn't pay attention to him after he came out, but went to the study with Gao Ming.

And when Liu Bing raised his head, he happened to see Gao Ming glaring at him, and at this time, he completely relieved his heart.

"Saved!"

Thinking of this, he looked at Gao Ming's gaze with a little more gratitude.

"His Royal Highness the Crown Prince is really a good person!"

Gao Ming didn't know that his status in Liu Bing's heart had been raised, and after he entered the study with Li Shimin, he immediately took out a piece of paper from his desk and handed it to Li Shimin, and smiled at him.

"Look, this is corn!"

On this piece of paper is the corn painted by Gao Ming, from the plant to the fruit, the roots, leaves, and flower ears, every part is carefully drawn.

After seeing this painting, Li Shimin's face suddenly showed curiosity.

"This corn looks a little similar to sorghum!"

After hearing Li Shimin's words, Gao Ming immediately smiled and nodded.

"That's true, but the corn stalks are thicker and the grain yield is much higher than that of sorghum."

As soon as Gao Ming's words fell, Li Shimin's eyes lit up again.

"Like you said before, there are as many as eight stones?"

Looking at Li Shimin's blazing eyes, Gao Ming suddenly couldn't help but smile, and he nodded while laughing.

"Yes, if you cultivate intensively, there are at least eight stones per acre of land, and if you plant it in the barren mountains and mountains, if you lack care, it would be good to harvest about two stones per acre of land."

"Enough is enough, it's enough to collect two stones in the barren mountains and mountains!"

Hearing Gao Ming say that corn can be harvested for about two stones in the barren mountains and mountains, Li Shimin immediately nodded his head as if he was making a little chicken rice, and his expression was quite excited.

Li Shimin's performance was also expected by Gao Ming, because he also knew that the fertile land in the Tang Dynasty only accounted for a small part of the total number of fields, and the grain output of most fields was not high.

Generally, a harvest of one or two hundred catties per acre of land is considered good, and a harvest of 100 catties is considered a bumper harvest.

In contrast, corn can reach a yield of 200 catties on barren land, which can be called a miracle for Li Shimin.

So at this moment, he can't wait.

"If this corn is so good, where is it? I'm going to send someone to find it at once. ”

Looking at Li Shimin's eager look, Gao Ming shook his head again.

"If I can find it so easily, then I don't have to wait until now, you may not understand me when I say this, I'm still showing you the map directly!"

As he spoke, Gao Ming walked to the side of the bookshelf, then took out a stack of papers from it and opened it in front of Li Shimin.

Looking at this thing that was suspected to be a map, Li Shimin suddenly frowned.

"It's ......"

Seeing Li Shimin's puzzled look, Gao Ming immediately gave him an answer.

"This is the map of the world, to put it simply, this is the map of the world!"

"A map of the world?"

Hearing Gao Ming's words, Li Shimin immediately became interested, and he carefully looked at the world map drawn by Gao Ming, and then used it to draw a range on it.

"I think Datang should be here, right?"

Because Gao Ming's map only roughly draws the land of several continents, and does not mark it, Li Shimin's finger encloses Asia, Europe, and more than half of Africa.

Seeing this scene, Gao Ming suddenly showed a smile on his face.

"Although I also hope that these places belong to Datang, in fact, Datang is not so big."

"Huh? Not so big? ”

Hearing Gao Ming's words, Li Shimin suddenly showed a look of surprise, and then circled the position of Asia with his fingers.

"Is that all there is to it?"

Seeing Li Shimin's action, Gao Ming had no choice but to sigh, then simply took a pen and circled the location of Datang on the world map, and then nodded towards Li Shimin.

"Look, Datang is here!"

"Uh......"

Looking at the small circle on the map, Li Shimin's whole person was stunned, as if he had seen something incredible.

Looking at him in disbelief, Gao Ming suddenly shook his head helplessly.

"Actually, you don't have to care so much about the size of the land, Datang is already big enough, no matter how big it is, you can't manage it, don't say anything else, just say that from Chang'an to Lingnan, it will take half a month to speed up the horse, if it is farther, what are you going to do?"

Hearing Gao Ming's words, Li Shimin immediately nodded subconsciously.

"Well, you're right, Datang is already big now, Longyou and Lingnan, I'm already a little powerless, no matter how big it is, I really can't manage it!"

Seeing that Li Shimin understood, Gao Ming smiled and nodded.

"That's it, so don't be greedy, let's continue to talk about corn!"

Speaking of this, Gao Ming pointed to the world map on the table.

"Look, old man, this is our Datang, and here, I call it Cuba, and the corn is here!"

Because Gao Ming drew the floor plan of the globe, when Li Shimin looked at the Pacific Ocean between the Tang Dynasty and Cuba, his eyes immediately widened.

"It's so far!"

Looking at Li Shimin's shocked appearance, Gao Ming shook his head.

"If you sail all the way east across the Pacific Ocean, it is already considered a shortcut, but according to our current conditions, choosing this route is simply nine deaths, or even ten deaths, so you can't choose this road!"

Speaking of this, Gao Ming immediately pointed to the left side of the map.

"I'm going to go this way!"

Looking at the position of Gao Ming's finger, Li Shimin immediately frowned.

"Since your painting of Cuba is on the right, if you go to the left, won't you go in the opposite direction, and go further and further?"

Facing Li Shimin, who looked puzzled, Gao Ming suddenly smiled mysteriously.

"Of course not, as long as you follow the route I gave, even if you go west, you will definitely be able to reach Cuba!"

"Uh......"

Hearing Gao Ming's words, looking at the mysterious and confident smile on his face, Li Shimin was stunned again.