Xu Qilin hurriedly turned his back around, and raised his chin at Princess Jinyang with a smile.

One is five years old, the other is six years old, and the two little girls are not heavy. For Xu Qilin, a twelve-year-old man, gritting his teeth hard, the small universe exploded, and he stood up with a hey.

Carrying the princess on his back and holding his little sister, as long as he can stand up, Xu Qilin feels that there is not much pressure.

"Ahh Xiao Zhao saw the three-dimensional map, his eyes widened, and he let out an exclamation.

Princess Jinyang was lying on Xu Qilin's back, her black eyes didn't blink, and the sound of inhalation was next to her ears, and Xu Qilin heard it clearly.

Not only His Majesty Li Er and the two female babies, but Xu Hui was also shocked.

When it comes to flat maps, she's certainly seen them. It is said that it is a zigzag ghost drawing, but it is too demanding. But compared to this three-dimensional map that is clear at a glance, well, it's really too far, too far.

"That's Chang'an." Princess Jinyang stretched out her little hand, pointed and said, "It's so close to Zhongnan Mountain!" ”

Xu Qilin pointed to the scale on the wooden frame and explained, "Your Royal Highness Princess, the maps are all made according to scale. I'm taking an inch and folding a hundred miles......"

His Majesty Li Er also noticed the details of the three-dimensional territory map, such as the scales on the wooden frame, and the directions of east, west, north and south.

"Qi Lin is attentive." His Majesty Li Er knew that the energy required to produce such a map and the books to be read could not be completed in a short period of time.

After a pause, His Majesty Li Er said again: "There are all the ambiguities on this map, mountains, rivers, passes, roads, etc., may not be very accurate, right?" ”

Xu Qilin hurriedly said, "Your Majesty Mingjian." When the grass people made this map, on the one hand, they searched for history, and on the other hand, they collected public opinion, but they were afraid that they would not be detailed and untrue. ”

His Majesty Li Er smiled and praised Xu Qilin's serious attitude in cartography. At the same time, he also agrees with Xu Qilin's two ways of cartography.

Searching for and studying history is to consult the old books preserved by the central and local governments, so as to grasp first-hand information and accumulate rich geographical knowledge, which is the basis of cartography.

Gathering public opinion is a wide range of research and interviews, and you can ask businessmen from all over the world and people from various places.

Compared to Xu Qilin's contact area and ability, it would not be very difficult for His Majesty Li Er to expand or improve the map.

collect old books and order special personnel to sort out information; Ask the merchants, the envoys of the four yi, and the court officials who sent the four yi back.

As long as these two principles and methods are followed, with the power of the emperor and the power of the imperial court, a larger and more detailed map can be made, wouldn't it be easier than Xu Qilin personally?

His Majesty Li Er wanted to praise him a few words, but when he saw Xu Hui winking at him, he remembered what he had promised. After brushing his beard and thinking about it, His Majesty Li Er began to find faults.

"Qi Lin, I remember you once said that the model you made can help me strategize and win a thousand miles." His Majesty Li Er pointed to the three-dimensional map and said, "But this, I'm afraid it won't have this function, right?" ”

After speaking, His Majesty Li Er waved his hand at the palace people next to him. The palace people hurriedly bowed forward and hugged the little princess who was crawling on Xu Qilin's back like a monkey.

Xu Qilin did not panic or argue, and smiled confidently: "Your Majesty, please see, there are still models made by grass people here." ”

His Majesty Li Er looked in the direction of his finger, only to find that there was a square object in the corner of the side hall, which was covered with a linen cloth.

Xu Qilin lacked a "daughter" on his back, walked briskly, walked over with his little sister in his arms, and stretched out his hand to slowly lift the linen.

His Majesty Li Er's eyes were condensed, and he walked in a tiger's step, and he arrived in front of the sand table in a few clicks, and watched with his eyes.

That's right, it's the sand table. It is the combat sand table in the Tuyuhun area made by Xu Qilin according to a certain proportion.

At that time, Tuyuhun had been attached to the Tang Dynasty and was a subject state of the Tang Dynasty. Xu Qilin's sand table of Tuyuhun was not to imply that the two countries would go to war, but to include part of Tubo on the sand table.

Also this year, the first war between the Tang Dynasty and Tibet will break out, caused by His Majesty Li Er's rejection of Songtsen Gampo's marriage proposal.

Although His Majesty Li Er knew the place of Tubo and knew that the king of Tubo was called Songtsan Gampo, including him, the Tang Dynasty did not have a sufficient and clear understanding of the situation in Tubo.

At that time, the Tang Dynasty intermarried with the Turks and Tuyuhun, but the only reason for rejecting Tubo was because Tuyuhun was in the way, which hit Songtsen Gampo's self-esteem.

Perhaps it can be said that the first war of Tang Tu was Songtsen Gampo in order to marry his daughter-in-law and fight for his reputation.

For Xu Qilin, this sand table is mainly to visually display the path and danger, so that the Tang army can make a leap forward in operational command.

As for Tibet, it was piggybacked. After the outbreak of war, it can allow His Majesty Li Er to respond more quickly, so as to give a higher evaluation of the sand table.

His Majesty Li Er looked at the three-dimensional model of roads, rivers, towns, and woods marked with different colors, and said with emotion: "The ancient book contains: the Eastern Han Dynasty general Ma Yuan 'gathers rice for the valley and points to the situation', which makes Emperor Guangwu feel 'captured in my eyes'!" Made by Qi Lin, it is also so effective? ”

Xu Qilin replied respectfully: "Back to Your Majesty, Xiao He of the Western Han Dynasty collected the map of the Qin State to help Liu Bang seize the world, and the general Fubo Ma aided Jumi for the valley and pointed to the situation, helping Emperor Guangwu defeat Kui Huan and pacify Longxi. The grass people envy the former philosopher, and they made this model for His Majesty and did their meager efforts for the Tang Dynasty. ”

His Majesty Li Er bowed his head slightly without hiding his appreciation, and said warmly: "Qi Lin has this ambition, which is very good, and it is enough to be gratified. It's just this – how do you use it? ”

Xu Qilin stretched out his hand and pulled under the model, and it turned out to be a drawer, which contained some small wooden figures and small wooden signs.

"Your Majesty, please see." Xu Qilin shook his spirits, inserted a small wooden sign into the round hole on the head of a small wooden man, and there was a "10,000" logo on it, and then put the "10,000" soldiers and horses on the city model casually.

"Oh, the garrison of this city is 10,000." His Majesty Li Er said with a smile.

Xu Qilin took out a small wooden figure again, but it was on horseback, and then installed a wooden sign, put it on a road, pointed and said: "This is 10,000 cavalry, the distance from here to that city can be calculated according to the scale and scale, and you can know how many days it will arrive; If it's infantry......"

His Majesty Li Er understood it all now, and was deeply shocked by the efficacy of this sand table.

On this, mountains, rivers, roads, dangers, rivers, towns, and distances are all clear at a glance, and through the deployment of troops on both sides and the actual terrain, it is possible to formulate extremely thorough battle plans.