Chapter 954

Li Er, Cheng Yaojin and others naturally know the distance from Chang'an to Taiyuan mansion, but they didn't expect Li forgetful to report the exact distance just by measuring it with a ruler on the map.

Although Li forgets to worry about simply measuring according to the provincial and national roads of later generations, it may not be very accurate, in fact, the distance known by the kings and officials of the Tang Dynasty is only a vague number, 1400-500 miles.

After all, Datang can't measure the specific length of those official ways in detail.

"Zhiniang thief, such an accurate map is like overlooking the earth from nine heaven. Ziyou, this map is taught by the Taoist ancestors? I think no one can draw such a map except the gods and Buddhas in heaven."

Cheng Yaojin's words made Li Er and others nod and agree.

Li forgot to worry and smiled in his heart, but without hesitation nodded yes.

The old hooligans are right. This kind of map is not from the mapping of future remote sensing satellites. It is not fooling them to say that the "gods" look down on the earth from nine days.

When they learned that the map came from Daozu, they were amazed again. Li Er's eyes were about to shine when he looked at the map.

After people marveled, they were more interested in this huge map.

Li Er and other people ordered people to take a ruler, followed Professor Li forgetful's method, and measured the size on the map in person.

"Hiss... Ziyou, is this map really right? I measured that it is more than 4000 miles away from Chang'an to Pyongyang, the capital of Koguryo?"

Gao Shilian looked unbelievable. Before, he only knew that if he wanted to attack Koguryo, the distance was very far, but he didn't expect it to be so far.

Even if the map is taught by "Daozu", the measured figure is enough to shock Gao Shilian and others.

Considering that the Tang army had to maintain the supply of grain and grass for more than 4000 miles, the kings and officials of the Tang Dynasty were a little numb.

After all, in an era when there were no planes, trains or cars, just walking more than 4000 miles was a long and incomparable journey. Moreover, it was necessary to maintain the food and grass consumption of hundreds of thousands of troops. People ate horses and chewed them. It was terrible to think about it.

Li Er stared at the map and the direction of Pyongyang city. He was silent. It took a long time for him to take back his eyes and look at Li forgetful.

"Ziyou, as you said before, Koguryo is not enough to fear. In your opinion, where is the trouble in the heart of Datang?"

When Fang Xuanling, Cheng Yaojin and others heard the speech, they all looked at Li forgetful and waited for his answer.

Li forgot to worry, went to the map and coughed: "uncle, gentlemen, you may not know. In fact, there is only one opponent around Datang, which needs to be more vigilant, that is..."

He pointed to Chang'an as the starting point on the map, moved westward until he moved to the west of Yizhou, and repeatedly clicked twice on the position of the Qinghai Tibet Plateau.

"Tubo! That's the real trouble in Datang!"

On the map, Li forgot to worry and ordered Yan Liben to draw the towering terrain of the Qinghai Tibet Plateau very prominently. The earthy Yellow Plateau forms a sharp contrast with the Sichuan Basin on its side.

"Tubo? Where is that?" Li Er asked curiously.

Fang Xuanling, Cheng Yaojin and others are also puzzled. They don't understand what Li forgets to worry about.

Obviously, people don't even know what Tubo is.

Tubo was the rebellion of an and Shi on the Qinghai Tibet Plateau. Tubo occupied Chang'an for half a month.

Although Guo Ziyi drove out of Chang'an later, the southwest border of the Tang Dynasty was mostly occupied by Tubo.

It can be said that Tubo was almost invincible to Datang because of the geographical advantages of the plateau, which made Datang suffer from repeated losses.

Li forgets worry and naturally doesn't want to let this happen again. Therefore, he takes this opportunity to solemnly introduce Tubo to Li Er and others.

"Uncle, gentlemen, Tubo is a country. In my opinion, its threat to Datang is like a tiger on the side. Tubo is like a sharp blade on my Datang's back, which will stab Datang at any time."

Hearing the speech, Li Er frowned slightly. Before answering, Cheng Yaojin and Yuchi Jingde burst out one after another.

"Don't you dare to be a soft persimmon in the Tang Dynasty? What the hell is Tubo? Can it be better than the Turks? Ziyou, I don't believe you!"

"Don't worry, your majesty. If the Tubo dares to offend Tianwei, it will surely pinch and burst its eggs!"

Li forgot to worry and shook his head with a bitter smile: "Uncle Cheng and uncle Yuchi, if Tubo is so easy to deal with, my nephew won't say it's the trouble of the Tang Dynasty..."