Sure enough, a smile appeared on Li Shimin's face, he stretched out his hand and patted Li Xiaogong's shoulder directly, and then said seriously: "Cousin, if I don't believe you, why should I talk to you about these words." ”

"I know my cousin's determination, so this time I said that my cousin was invited, just to invite my cousin out of the mountain." Li Shimin said seriously.

"Your Majesty, please speak." Li Xiaogong said seriously.

"I would like you to go down to the south of the Yangtze River again, re-serve as the governor of Yangzhou, and build a large port and dock near the mouth of the Yangtze River, build warships, and train naval troops, this time not only in the Yangtze River, but also at sea! To be precise, we in Datang want to establish the Datang Royal Navy. Li Shimin said seriously.

Naturally, I heard the word navy from Huo Gang, especially Huo Gang's sentence that warships are mobile land, which was also very exciting to Li Shimin.

And he has studied in private that Goguryeo has always been disrespectful to the Tang Dynasty, and the biggest reason is not because the border between Goguryeo and the Tang Dynasty is located on the border of Guyouzhou, where there are now dense primeval forests, and the Tang Dynasty bypasses that big circle, and the entire army needs to walk thousands of miles more.

But if Datang had a strong navy, these warships could directly transport soldiers from the sea to the hinterland of Goguryeo! And the logistics line can be maintained with the navy, and when the time comes, Goguryeo will not be afraid at all if the north and south are flanked!

The most important thing is that Li Shimin can say that there are at least more than 50,000 taels of silver on the Wako Island in the east, and it can be said that there is really a silver mountain there!

And these islands are bound to be taken by Li Shimin's current ambitions, and more importantly, next door to the vast sea on the east side, Huo Gang said that there should be no less land than the Tang Dynasty.

These things are all from the Tang Dynasty, at least from the future Datang, and these are all to solve the struggle between the princes.

Li Shimin thought very clearly, the land around Datang now is enough to solve the problem of his son's struggle, but his son's son may not be easy to solve in the future, but there is more land and naturally there is a better way.

After all, not every son has the ambition to open up the territory and want to be an idle prince.

Li Shimin's words made Li Xiaogong stunned for a moment, he didn't expect Li Shimin to give him such a big responsibility.

"Your Majesty......" Li Xiaogong didn't know what to say for a while.

"Cousin come to see ......" Li Shimin directly took Li Xiaogong's arm and walked to the world territory map next to him, but this is a reduced version, that huge version, Li Shimin will not take it out easily.

"If my cousin builds enough sea ships and huge warships here, it means that our fleet can go south and south, which will play a great role in conquering these countries in the future, and to the north, Datang's next move is mainly this position, and I believe that the convenience of shipping at that time is better than me, using these long water systems, we can easily send grain from here to Chang'an."

"The most important thing is, Goguryeo! If my cousin was able to control the entire sea, it would mean that we could purge the sea of all pirates and attack directly from any of Goguryeo's hinterland at any time. And they have no way of knowing. Li Shimin pointed to the map seriously and said.

Li Xiaogong looked at it seriously, the people who can conquer half of the territory of the Tang Dynasty are naturally very proficient in fighting, Li Shimin's words, Li Xiaogong knew at a glance that what Li Shimin said was very correct, if there is really a huge fleet, it means that the Tang Dynasty can attack and retreat and defend, and the strategy is transferred I don't know how much stronger it is than before.

And the transportation of sea ships is indeed much more useful.

"As long as Your Majesty believes in the minister, the minister will live up to Your Majesty's trust!" Li Xiaogong said directly.

"Okay, cousin, I'll hand over the sea frontier of the Tang Dynasty to you, cousin, after you go back, you will start preparing immediately, and then set off for Jiangnan in a few days and start preparing for related things, especially the ship's craftsmen and other priority signs, I will give you the relevant holy decree to let you act cheaply." Li Shimin said seriously.

"Understood. But Your Majesty, you can imagine that the construction of sea ships requires a huge amount of manpower and material resources, and it is a long-term investment process. Li Xiaogong said seriously.

"I have thought about it, all the local government soldiers will be handed over to you for dispatch, and you will be given the right to recruit soldiers, and you will have to select excellent sailors."

"Yes, it is not difficult to select sailors, and there are many sailors among the fishermen along the coast, but in these aspects, it is not a problem to have the cooperation of local officials." Li Xiaogong directly agreed.

"Well, you know about the navy, give me a detailed plan in the next few days, including the construction of warships, etc., you must have a detailed plan." Li Shimin quickly spoke, "By the way, I will give you a few things, and you will have to test them when you build a warship." ”

"Yes."

After negotiating with Li Xiaogong, Li Shimin took a deep breath and sent Li Xiaogong away, because of Huo Gang, he always had a feeling that he would not treat me from time to time, originally he was not such a character, the current Datang should have stabilized the situation, but he still made such a radical decision.

Of course, it is also because the external environment of Datang has begun to become a very stable relationship.

After sending Li Xiaogong away, Li Shimin thought about it and turned directly to Empress Changsun's side, Li Lizhen's palace is now with Empress Changsun, so Li Shimin wants to talk to Li Lizhen today.

When he arrived, he found that Empress Eldest Sun was chatting with Li Liqing.

"What are you mother and daughter talking about? So happy? Li Shimin asked with a smile.

"See Father."

"I've seen Your Majesty."

"Okay, no courtesy, it's all your own people." Li Shimin waved his hand.

"My son is telling the story of mathematics to his mother." Changle said with a smile.

"Really? What kind of math story, tell me about it. Li Shimin asked with a smile.

"Father, this story is very simple, it is this chess board." Changle took the chess board next to him, Datang's chess is actually very similar to later generations, of course, there are still differences.

"In this way, this story is the story of Changle asking his father for food, there are a total of 71 grids here, the amount of food that Changle wants from his father is very simple, that is, one wheat is placed in this grid, two wheat is placed in the second grid, four wheat is placed in the third grid, eight wheat is placed in the fourth grid, and 16 wheat is placed in the fifth grid......"

"Changle wants so much food, what do you think, father?" Changle said with a grin.

Li Shimin said with some abruptness: "What kind of story are you?" Are you taking the Godfather Exam? Isn't that what it is? Father will give it to you. ”

"Hehe, don't you think about it, father? That's a lot of food. Changle said with a smile, and the eldest grandson queen next to him didn't bother them, just looked at the father and daughter with a smile.

"How much can this be, my father doesn't have anything else, but there is still a lot of food, and I gave it to me." Li Shimin said with a smile with a wave of his hand.

"Hehe, then father, do you want to know, according to this number, how much food will be needed to fill this chessboard?" Changle asked with a grin.

"How much?" Li Shimin also asked with a smile.

"Father, you just gave Changle Datang to grow food that is not enough for 10,000 years." Changle said with a little smugness.

"How much?" Li Shimin was stunned for a moment.

"10,000 years of planting in Datang is not enough." Changle repeated.

"It can't be." Li Shimin subconsciously spoke.

"Changle is not lying, although it seems to be a small number at first, but it doesn't need too much, according to this number, it will be a huge number when it reaches about 30 grids." Changle clapped his little hand and said.

"Really?" Li Shimin was extremely shocked, he looked at this small chessboard, just put a few rice, can it be so much? 10,000 years of Datang? How much grain is that? Li Shimin couldn't believe it.

Seeing that Li Shimin still didn't believe it, Changle immediately spoke: "Really, Father, this is the power of mathematics, that is, the power of arithmetic, according to what Changle just said, when it is about 30 grids, it needs to be close to 500 stones!" ”

"That's not much...... Li Shimin subconsciously said, it's true that 500 stones is not much.

"Father, think about it, it took 30 squares to go from a grain of grain to 500 stones, but there are 71 squares here! The 31st grid is 1,000 stones, the 32nd grid is 2,000 stones, the 33rd grid is 4,000 stones, and the 35th grid is 16,000 stones! At the fortieth grid, it will be 512,000 stones! Changle said quickly.

Li Shimin's face turned a little white, although this is just a small story, but only 40 squares require 510,000 stone of grain! If it is doubled in this way, it will be more than 71 squares...... It's really a terrifying number.

"So, this is the power of arithmetic, if there are envoys from other countries in the future who can't help their father, you can use this example to give them food, let them give food, if they can't give it, beat them, that's the crime of bullying the king." Changle said with a grin.

Hearing this, Li Shimin's expression instantly became strange, to be honest, the people around Datang who were disrespectful to Datang, the Turks had completely finished playing, and it seemed that there was only one Goguryeo left? And the envoys of Goguryeo have always been proud.

When the time comes, if you want to use force against Goguryeo, use this to dig a hole...... Seems good?

The eldest grandson queen next to her couldn't help but stretched out her finger and knocked on the door of Changle's head, "oops" Changle couldn't help but exhale in pain, and then hugged the eldest grandson's arm and said, "Queen Mother, why are you beating people." ”

"You don't know where these things came from in your little head, you're only 8 years old." Empress Eldest Sun glared at her.