I am the cook, but I am Li Er's son-in-law

Yin Xuan didn't talk about "the earth is a ball" - this is not so easy for Li Tai to understand and accept, and it is not easy to verify now.

"The subject of geography does not mean that you know where there is a river, where there is a mountain, and where there are human customs. It is called geography."

"Of course these are important."

"But more importantly, it is a summarizing thinking."

After speaking, Yin Xuan paused, took the pen and paper, and continued, "As the first class, I want to teach you the concept of "landscape" first."

Landform?

Several people looked serious.

"Plains, mountains, hills, basins, sandy land." Yin Xuan said softly while drawing stick figures on paper, "This world is very big, but there are only so many types of landforms. After understanding these Things, I will learn about this world later.”

"It won't be so fragmented, but can be regarded as a whole."

Li Tai has read a lot of geography books.

The ability to accept these concepts is very strong - some books have vaguely mentioned these things, but that is not the point, only a few sentences, far less clear and organized than what Yin Xuan said.

A door to a new world slowly opened in front of Li Tai.

Without the slightest hesitation, he walked in directly.

At this step, it is as if the clouds are flying into the sky, standing on the highest point of the whole world, looking down on the entire land of the Tang Dynasty from this lofty perspective.

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Two pieces of land separated by thousands of miles are conceptually the same.

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You can also use this method to understand the whole world.

This feeling made Li Tai love it, until the guests came and Yin Xuan started to cook, he was still immersed in this vast sea of ​​learning, unable to extricate himself.

In the afternoon, after the last class, Yin Xuan assigned Li Tai a task, asking him to observe the terrain near Chang'an and make a sand table.

Geography is a highly practical subject.

You can't learn geography if you just sit in the room and listen to the lectures without seeing the world.

But Yin Xuan didn't have time to take a few little girls out for a summer tour.

I had no choice but to entrust this task to Li Tai.

Li Tai was also unambiguous, and agreed. Although, from the perspective of national defense and security, making a map of Chang'an is a dangerous thing, but he is the prince, so he can grant some privileges.

As long as it is not specifically implemented in Chang'an City, there should be no big problem.

Li Tai went back home, ready to digest what he learned today.

But he hasn't sat in the study for long.

Qianniuwei walked in and asked Li Tai to go to the imperial city.

In the East Palace.

Li Tai, who was led by Qianniuwei, saluted and greeted him: "Father, why are you calling the child over?"

Li Shimin couldn't see any joy or anger on his face: "Recently, you have been frequently going to Tongfu restaurants as the king of Wei."

Li Tai nodded quickly, and agreed: "Yes, it is true. My son wants to edit the geography records. After seeing the booklet written by Mr. Hu Shang, I started to ask for advice and study."

"And because after the book is completed, the boy's name will inevitably be given, so the boy has not concealed his identity."

He took out the speech he had prepared earlier in the morning.

Li Shimin nodded and knocked on the table: "The shop does not accept apprentices."

"My son is clear." Li Tai replied respectfully again, "My son also wants to do what he can with sincerity, and gold and stone can be opened, and follow the example of Emperor Zhaodi of the Han Dynasty who paid three visits to the thatched cottage."

"It's also thanks to your magnanimity that the child is allowed to buy geography knowledge with gold and stones."

"It's just that my husband's refusal to accept the child as a disciple really makes the child a little bit wronged."

Li Tai didn't dare to hide anything in front of Li Shimin, he spoke honestly, and even honestly expressed his inner thoughts.

This is also Li Tai's consistent attitude when facing Li Shimin, that is "sincerity", no matter what is said is the truth or a lie, it must be sincere.

Li Shimin nodded again: "What you study is geography, and the store also dabbles in geography?"

Li Tai sighed with emotion, and then replied: "Mr.'s attainments in geography are far superior to those of countless predecessors. My child just listened to Mr.'s class for the first time, and he suddenly opened his eyes and opened his eyes."

"Mr.'s vision and mind are even comparable to Father Emperor."

Li Shimin raised his eyebrows.

Li Tai's evaluation was really beyond his expectation.

"Tell me to listen to me." Li Shimin waved his hand and said casually.

Li Tai recounted what he had seen and heard today, what he had learned, and even talked about the emotion, he went to Li Shimin's side, picked up a pen and paper, and began to draw.

This made Li Shimin breathe a sigh of relief.

Compared with physics, chemistry, and mathematics, which he doesn't understand, he still understands geography. This statement is contrary to what he has seen in geography before, which makes him quite novel.

Think carefully about what I saw and heard when I was young, traveling all over the world, and everything corresponds to those contents.

"The shop owner has never left Chang'an." Suddenly, such a sentence came out of Li Shimin's mouth.

Li Tai was taken aback for a moment, still immersed in the ocean of knowledge, he couldn't react.

Li Shimin waved his hand.

Is there really that kind of person who knows everything about the world without leaving home?In the intelligence obtained by Mingming Qianniuwei, it is written clearly and plainly that the store owner has never been out of Chang'an.

How did he know so many things?

Li Tai's heart sank, and he took half a step back: "Does that kid continue to study behind the shopkeeper?"

Sensing the change in Li Shimin's mood, Li Tai even changed his title.

Li Shimin shook his head: "It's okay, I'm just a little curious. Your husband is a good man, but his knowledge is deep and wide. Don't say that at his current age, even if he doubles it ten times, I'm afraid no one else can do it." .”

"Stay behind him and study hard."

Li Tai responded with a snort.

Curiosity in my heart is curiosity, Li Shimin would not take this thing to ask, this kind of doubting other people's knowledge, if you are not careful, it will tie the knot.

Li Shimin was worried about how to improve Yin Xuan's favorability, and how could he do such a self-defeating thing.

Li Tai still respectfully followed Yin Xuan to learn.

From the enthusiasm at the beginning, he was also a little bit burnt out later.

Except for latitude and longitude, northern and southern hemispheres, things like climate, contour lines, water flow, etc. A bunch of new terms and concepts have been poured over.

Li Tai never thought that geography could be so complicated.

Just when the whole restaurant is immersed in the state of learning in full swing.

The first batch of merchants hurried back to Chang'an.

They are Tubo merchants.

It was closer to Datang, and after going back to collect those stones that almost no one wanted, they rushed back immediately.