When he was in Jiulong County, Li forgot to worry about seeing the navigation map in Su Changqing\'s mobile phone, so he secretly scolded his pig brain.

In order to get a title for the beautiful boss, it\'s so complicated. In fact, as long as he copies the map in his mobile phone, he\'s not afraid to blind Li Er\'s eyes. What\'s the difficulty in changing a title?

Since ancient times, the map drawing method of China has always been different and unique. But I have to say, but from a practical point of view, the map of China is really not fine.

As early as the Western Jin Dynasty, Pei Xiu, a famous minister, put forward the "six body of Cartography" to clarify the relationship between map scale, orientation and distance. However, due to the lack of map projection and latitude and longitude measurement due to the surveying and mapping means and drawing method, the ancient map of China is always not accurate enough.

In fact, this is true not only in China, but also in the western world.

Even though the "complete map of Kunyu and all nations" drawn by the western missionary Matteo Ricci during the Wanli period has made great progress, the map is still far from accurate in future generations.

This is also normal. After all, in the era of no satellite remote sensing mapping, it was too difficult to rely on manpower to measure the world at that time.

The navigation map in Su Changqing\'s mobile phone is only a civilian map of later generations, but in terms of accuracy and accuracy, it is an incredible "divine map" in the Tang Dynasty.

After returning to Chang\'an, Li forgot to worry and took the time to redraw a map of China and its surroundings by means of equal scale amplification.

Because this map is prepared for Li Er, Li forget worry drew it quite large in order to be shocking enough.

On the white silk cloth, which is one and a half feet long and half feet wide, Li Qieyou spent a lot of time transplanting the map of Asia into the past.

The reason why he didn\'t draw the world map was that he was too lazy to explain so much to Li Er.

Otherwise, Li Er and others will inevitably become curious babies and keep asking him all kinds of questions, such as how far is it from north and South America, Europe and Africa across the ocean, and how to go... As a lazy man, it is the most important not to make trouble for himself.

After a huge map of Asia was drawn, Li forgot to worry. According to the habits of the Tang people, he asked Yan Liben for help and drew mountains, rivers, cities and other terrain on it, so as to make this huge map more visual impact.

When Yan Liben saw the map, he knelt down and had no doubt that Li forgetful was a disciple of the Taoist ancestors.

How can anyone draw such a map except the gods looking down on the earth from the sky?

After Yan Liben drew a more three-dimensional and intuitive map of Asia, it was slowly unfolded in front of the officials of the Tang Dynasty. Immediately, Li Er and others were shocked and stood stiff on the spot.

In the eyes of the kings and officials of the Tang Dynasty, this huge map unfolded in front of them is simply a "miracle".

Yan Liben studied sketching from Li forgetful sorrow, and learned the focus perspective from Li forgetful sorrow, so that the mountains and cities drawn are very three-dimensional.

According to Li\'s instructions, he drew colorful mountains, rivers and cities with a three-dimensional effect on the map according to the trend of mountains. When the map was seen in the eyes of people, it was like looking down on the earth above the nine clouds.

"This... This is my country? This is my Tang Dynasty?" Li Er murmured.

Fang Xuanling, Chang sun Wuji, Gao Shilian, Cheng Yaojin, Yuchi Jingde and others also looked at the huge map in front of them and were dazed.

Li Er quickly walked to the huge map and pointed to a magnificent city in the middle of the map. He was very excited: "Chang\'an, this is Chang\'an! Ziyou, am I wrong?"

Li forgets worry very much and bows slightly: "Uncle Yingming, that\'s right, that\'s Chang\'an!"

When he drew this map, he deliberately adjusted the orientation and drew Chang\'an in the center of the map.

Needless to say, this is naturally to flatter Li Er.

Obviously, Li\'s mind was not in vain. Li Er was very satisfied with it. His fingers kept wandering around on the map.

"This is Luoyang, this is Zhengzhou... This is Taiyuan mansion, and up there is Koguryo... Ziyou, is this the terrain of Koguryo?"

"Yes, that\'s it."

"Ziyou, what is the scale on this map?" Fang Xuanling asked curiously.

"Mr. Fang, this scale refers to the ratio of the length of this line segment to the actual length. The scale of this map drawn by my nephew is 1:100000. In other words, you can measure the distance between two places on the map with a ruler and multiply it by 100000, which is the actual distance between the two places."

The map drawn by Li Qieyou is quite large, so the scale is also large.

The distance of one centimeter on the map is equivalent to the actual distance of 100000 centimeters, that is, 1000 meters.

Li forgot to worry about this explanation, but it made everyone more and more stunned.

"Ziyou, you mean, this map is exactly the same as the world? You can measure the distance between the two places from the map? How is this possible?" Gao Shilian immediately shook his head.

Don\'t say Gao Shilian doesn\'t believe it. No one in the Tang Dynasty believes it.

After all, the ancient maps of China are not so accurate.

Although the map shown by Li Qieyou is really shocking to the public, it seems that there are thousands of miles of rivers and mountains in front of him.

However, it would be absurd to say that the distance between the two places can be measured only with a ruler on the map.

"If Gao Gong doesn\'t believe it, how about making a bet?" Li forgets to worry about the thief with a smile.

Gao Shilian has not been in Chang\'an for a long time. Where do you know that Li forgets worry? Now in Chang\'an City, he almost has the name of "gambling God". Even Cheng Yaojin, an old hooligan, would never dare to take the call if he heard Li forget you say "make a bet".

Whoever bets on this product has never lost.

Even the most incredible gamble, how not to be favored, the final winner is Li forgetful.

Therefore, neither Li Er nor Cheng Yaojin will bet with him now.

Gao Shizheng nodded, but saw Li Er glare at Li forgetful worry: "Ziyou, you can\'t even play with my uncle? Make it clear to me quickly. Is your map really so accurate? How is it possible?"

Seeing that the "treacherous plan" could succeed, Li forgot to worry and could only smile and continue to explain.

"Uncle and gentlemen, this map is really accurate. Although I dare not say that it is exactly the same as the actual terrain, it can also be regarded as very accurate. As long as you master the method of using the scale, you can easily measure the distance between different places."

Although Cheng Yaojin dare not bet with Li forgetful worry, he still refuses to believe his words.

"Zhiniang thief, I really don\'t believe it! Ziyou, please calculate the distance from Chang\'an to Taiyuan mansion on this map! I\'ll see if you calculate it right."

Li Qieyou smiled, found out the soft ruler and measured it on the map.

"Uncle Cheng, the straight-line distance from Chang\'an to Taiyuan mansion is 1000 Li, and the actual distance is about 1400 Li. I don\'t know if my nephew\'s calculation is right?"

When Li forgot to worry about drawing a map, he naturally did not know the actual direction of the official road of the Tang Dynasty. However, for thousands of years, most of the official roads and the main provincial and national roads of later generations have been handed down in one continuous line.

The roads in the map he drew were drawn according to the provincial roads and national roads of later generations. As for the expressway, it naturally doesn\'t need to be considered.

As long as the official roads of the Tang Dynasty are not much different from the provincial and national roads of later generations, the distance is basically eight or nine.

Sure enough, after he said the number, Cheng Yaojin and Li Er were really stupid

Not worth mentioning suck recently, but it was also a reason. Before the dispatch fee, I noticed that the cost of the paper was cut by half last month. Ah, Wen Wen Wen winter is indeed true. Although Lao long does not live on his paper fees, this trivial contribution is really unpleasant to people. But eunuch or unfinished business should not be done. Lao long will continue to write carefully. It\'s just a little slower. Don\'t blame you. Finally, I wish you all a healthy Dragon Boat Festival!)