When Zhang Nan saw Li Er summoning him, he would definitely not be able to accompany Cui Yue today, so he said to Cui Yue: "Yue'er, I can't play with you today. You go back to the house first. I'm taking you out to play tomorrow."

When Cui Yue heard that Li Er asked Zhang Nan to enter the palace, she naturally could not stop Zhang Nan from going there. What's more, when the emperor usually asked the minister to enter the palace, it was also a manifestation of respect, so Cui Yue was still willing to let Zhang Nan enter the palace.

"Mr. Lang, please follow General Liu to the palace. Don't let the emperor wait in a hurry. Qiu'er and I can go back by ourselves."

Zhang Nan nodded and followed Liu Bing towards the direction of the palace.

After Zhang Nan entered the palace, he followed Liu Bing to the Imperial Garden. At this time, Li Er was sitting in the courtyard drinking tea, and next to him was Zhang Nan's flying away "Eagle".

"Why is Qingquan so slow today?" Li Er did feel that Zhang Nan came very slowly, after all, Zhang Nan's mansion was not very far from the palace.

"Ah, the emperor forgives the crime. Today I will take Yue'er to fly kites outside the city." Zhang Nan was a little angry when he heard Li Er and said quickly.

Li Er waved his hand, signaling that it was nothing, and said, "This Yue'er is Cui Shao's daughter, but what is this kite?"

Zhang Nan didn't say anything, but just whispered at the "Eagle". When Li Er saw Zhang Nan like this, he took the kite and asked, "By the way, you have to explain this thing to me well. Why can you fly into my imperial garden when you are flying kites outside the city?"

"Ah, do you need to explain this too? Has the emperor not let the kite go?" Zhang Nan really didn't understand what it was good to explain.

"Of course I need to explain that I have flew kites when I was young, but none of them could fly so high or so far." Li Er did not look at Zhang Nan, but asked at Zhang Nan's kite.

"I really can't explain this." Zhang Nan did not lie. After all, physics is not very good. I really can't explain something too scientific to Li Er. You can't talk nonsense.

"Since that's the case, can you find a bigger kite in Qingquan?" Li Er suddenly said in a daze and asked Zhang Nan in a daze.

"Master, what are you going to do?" Zhang Nan asked tentatively.

"You said that if this kite is big enough, can it bring people to heaven?" Li Er asked without leaving the kite in his hand.

When Zhang Nan heard this, he was shocked, "Your Majesty, do you want to go to heaven?"

"Well, that's right, I have this intention. If I can send people to heaven, I will definitely take the lead when the two armies fight. Since ancient times, the most difficult thing to defend against is the scattered arrows flying in the air. It is easy to avoid open guns, but it is difficult to defend against hidden arrows. I have seen that the height of this thing flying, and ordinary bows and arrows cannot fly that high. If I can send people to the sky, not only can I detect the enemy's situation, but even if it is discovered, the enemy will not do anything to us." Li Er's face was excited.

After listening to Li Er's narration, Zhang Nan couldn't help but say, "Hey, you're such a fucking genius." Of course, Zhang Nan would definitely not say this. If he had to say it, although Li Er would not let him move his head, his butt would definitely be terrible.

"Your Majesty, you are such a genius." Zhang Nan gave a flattery at the right time. It has to be said that Li Er's consciousness is advanced. Being able to think of air supremacy is enough to prove that Li Er's military talent is not covered. The concept of air supremacy was proposed by Italian Du Hei in 1921. Although Li Er's this is just an idea and not a complete theoretical system, Zhang Nan believes that it is already very difficult to have this advanced idea alone.

"Don't rush to flatter me. Tell me first if there is such a kite that is so big that it can be sent to someone." Li Er was still worried. After all, the more Li Er thought about this thing, the more he felt it was feasible, and the more he thought it was more important.

"Your Majesty, do you want to hear the truth or lies?" Zhang Nan asked.

"What do you think, of course I have to listen to the truth."

"The truth is that there is indeed such a kite that can bring people to heaven, and the things you said by the emperor can realize it." Zhang Nan said.

"Really? It's great, hurry up, you won't do Qingquan. If you know how to do it, I will make this big kite for me during this period. As for whether you recognize or not, I won't pursue it. And if it does, I will also add an additional title to you." Li Er immediately gave out his reward. Li Er seemed to have seen that after he seized the initiative, everything Jie Li and sudden profit had to tremble in front of his big kite.

"This, my elders, although I really want to make this for you, and I also want the emperor not to pursue my ignorance, but I still have to say that we cannot do this thing in the Tang Dynasty, or the existing conditions cannot do it." Zhang Nan hit Li Er's confidence in time.

"Why? Why can't I do it? My Tang Dynasty has a vast land and a wealth of materials. I have to pay money and people. Is there anything I can't do?" Li Er became popular when he heard Zhang Nan say that he couldn't do it.

"Your Majesty, this is not a problem of money and silver. The main reason is that this is really too difficult. The existing technology of the Tang Dynasty still cannot make this thing." Zhang Nan really had no way to explain to Li Er the problem that he couldn't make, so he had to say that.

When Li Er heard Zhang Nan say this, he knew that Zhang Nan would definitely not lie to him. If Zhang Nan said that he could not do it, he would definitely not do it. Suddenly, Li Er collapsed on the stone bench like a deflated ball. Li Er felt that his plan to empire was delayed again.

"But my master, although I can't do it, I can get something that can send people to heaven, it's just this price." Zhang Nan said here, deliberately raising a long voice.

Li Er, who was originally slumped on the stone bench, heard Zhang Nan say that he could get a big kite that sent people to heaven, and he immediately regained his energy and turned his back on him quickly. Zhang Nan was stunned. If Li Er was put in later generations and was not the emperor, even if he was an actor, Li Er would definitely be at the level of an actor.

"Since that's the case, what are you waiting for? Let me do it quickly. I said, I want money and people to give it to others." Li Er urged him.

"Your Majesty, don't worry, I haven't finished it yet. There are too many restrictions on this matter of heaven, not just a technical issue. Now we won't consider the technology for the time being. Just the question of this candidate, first of all, this person is very afraid of high places. Looking down from a high place, you will feel dizzy and afraid. If you fly too high, you will feel that breathing becomes difficult. This requirement for people is very high." Zhang Nan said this. After all, in the future, whether it is a civil aviation or an air force pilot, the requirements for physical fitness are not a small part.
Chapter completed!