Tossed all night, the next morning, Cao Shuo just took a nap in the camp tent, and then took a group of people to test the flying kite.

The kite consists of a catapult device and a gliding facility that resembles a large bird.

Cao Shuo can build a thunderbolt, but he is not too sure about the flying kite.

Send a man into mid-air, and if the test is successful, he will be almost two thousand years before the Wright brothers invented the airplane.

In an open space far from the barracks, Cao Shuo watched the craftsmen install the flying kites.

"Childe, do you want someone to go up and try it first?" Supervising the craftsman to load the flying kite, Cai Ji ran to Cao Shuo and asked.

"Not necessarily able to fly." Cao Shuo said: "First tie a piece of wood that weighs about the same amount as a person underneath to see how high you can fly with heavy objects." ”

Cai Ji responded and shouted to the craftsmen: "Childe has an order to tie wood of the same weight as a person under the flying kite." ”

The craftsmen started to do it, and after a while, they tied the wood to the flying kite.

Looking at the flying kite that had been prepared, Cao Shuo licked his lips.

He was a little worried.

Cao Cao asked him to find a way to surprise the enemy, and he proposed to build a flying kite.

The principle of a flying kite is similar to that of a glider.

But its construction is extremely complex.

With a slight deviation in calculation, even if it flies, it is impossible to take a person into the air.

The craftsmen tied the stakes and pulled the ejection bolt after Cao Shuo's order.

With a "crash" sound, the flying kite was ejected.

Flying straight into the sky, there was nothing wrong at first, but when it reached the top, it suddenly spun a few times, and the upside-down onion fell.

Seeing this scene, Cao Shuo's brows furrowed slightly.

According to normal reasoning, when the flying kite reaches the highest end, it should fly out under the support of the wind.

Falling straight down can only say one thing.

That is, there are still unsolved technical problems in the flying kite itself.

"Childe...... How could this be......" Standing behind Cao Shuo, Cai Ji asked in amazement.

"Maybe the wings aren't big enough." Cao Shuo said: "And the flying kite itself also has a problem with its own weight, otherwise it would not have fallen straight up and down like this." ”

With Cai Ji and the others to the falling flying kite, Cao Shuo squatted on the ground and carefully examined it.

"I'll draw a drawing later, and you two will stay here to supervise the work." Cao Shuo said to Cai Ji and Wei Tu: "When I come back, I will see a new flying kite." ”

"Don't worry, Childe." Cai Ji and Wei Tu responded.

Cai Ji asked cautiously: "Childe went out this time, don't you plan to ask us to follow?" ”

"You two have more important things to do." Cao Shuo said: "Ever since we started building the flying kite, you two have been watching from the sidelines. You two don't know much less about flying kites than I do. Leave the two of you here to make a bigger difference. ”

Cao Shuo's attitude was very clear, he didn't plan to take them out, Cai Ji and Wei Tu didn't dare to ask more, and both of them answered the order.

Return to the barracks with the crippled flying kite.

As soon as Cao Shuo entered the gate, an officer ran over and said, "Qi Yu Gongzi, Cao Gong wants Gongzi to go see him as soon as he returns." ”

Knowing what Cao Cao was looking for him, Cao Shuo instructed Cai Ji and Wei Tu: "Take the broken flying kite and accompany me to see my father." ”

Before he arrived outside Cao Cao's tent, Xu Chu greeted him: "Son, you can be regarded as coming back, Gong Cao has urged me several times, saying that as long as Childe comes back, I will report to him immediately." ”

"Father wants to ask how the flying kite is?" Cao Shuo asked.

"Aside from this matter, what else can Cao Gong worry about?" Xu Chu asked, "Childe went to test the flying kite, what happened." ”

Turning around and muttering at the broken flying kite, Cao Shuo said, "The one who took it out for testing is here, it's clear at a glance." ”

Seeing the crippled flying kite, Xu Chu was stunned and asked, "How can this be?" ”

"Why can't this be?" Cao Shuo smiled slightly and asked rhetorically.

"The flying kite was built by Childe himself." Xu Chu said: "The thunderbolt boy can build it, just a flying kite, is it difficult to make the son feel embarrassed?" ”

"Flying kites are not the same as thunderbolts." Cao Shuo said: "As long as the thunderbolt can project the stones, it is enough, but the flying kite has to carry people to the sky. The slightest deviation will cause the soldiers who fly to the sky to fall down. Falling from such a high place, even if the gods are alive, I am afraid they will not be able to save them. ”

"How is Childe going to represent Cao?" Xu Chu said: "Cao Gong has great expectations for the flying kite. ”

"I have the same expectations, but the flying kite can't be used, and I can't help it." Cao Shuo said: "Something like this can only be finally formed after failing again and again. ”

"Childe told me that these things are useless, it depends on whether Cao Gong can understand." Xu Chu sighed and shook his head.

"Father will understand." Cao Shuo smiled slightly, and said with confidence: "Although the recent war has been unfavorable and my father is depressed, he also knows that many things are not something that can be created by trying to build. ”

The two of them were talking, and they arrived outside Cao Cao's handsome tent.

Xu Chu said inside: "Qiyu Cao Gong, the eldest son is here." ”

After Xu Chu gave his respects, Cao Cao opened the curtain and walked out.

He first glanced at Cao Shuo, and then his eyes fell on the crippled flying kite: "Failed? ”

"It didn't work out." Cao Shuo responded.

"Do you know why it failed?" Cao Cao asked.

"Maybe the wingspan isn't wide enough, or maybe the kite itself is too heavy." Cao Shuo said: "This kind of thing is not as good as a thunderbolt, I'm afraid it will have to be tried a few more times before it is possible." ”

"I don't have that much time for you to try." Cao Cao said: "The war is tight, Yuan Shao is pressing step by step, our army may not be able to hold the defense line at any time, and if we don't think of attacking, once we fall into a stalemate, it will be extremely unfavorable to our army." ”

"I understand what my father said." Cao Shuo replied: "Please rest assured, father, I will definitely be able to build a flying kite." ”

"When?" Cao Cao asked.

"Two or three months at most." Cao Shuo said: "Since it has been a stalemate for so long, I don't care about the stalemate for a long time. ”

Cao Cao didn't say anything, he knew very well that no matter how much he forced Cao Shuo, the flying kite would not be built in a day or two.

"Father, I plan to leave here with my troops later, and make a detour to Hebei to rob Han Meng's grain team." Cao Shuo said: "With food, our army will have a little more confidence. And if the enemy loses this food, the morale must be shaken somewhat. If my father persists for two or three more months, it shouldn't be too difficult! ”

"What else can I do but wait?" Cao Cao said helplessly: "You must be very careful when you go here, you really can't bring back the grain and grass, so you just burn it." The most important thing is that people can come back. ”

End of chapter