"Fight? I'm afraid that all of us will not be able to step into it enough to be swallowed by quicksand, and if we want to step directly, we will be dead. ”

When marching and fighting, the most taboo thing is to act rashly. Li Yun unceremoniously reprimanded Cheng Chumo, he would not bury tens of millions of brothers for the sake of a momentary pleasure.

"If we can't build a road, we can't do it, so we can only waste our time in vain?" Cheng Chu complained anxiously.

Li Yun understands his feelings, who let the trapped person be his old son.

"Tie Niu, I know you are anxious, but you must think of a foolproof plan now, otherwise, we will lose our lives before we arrive in Yongzhou, so how can we talk about rescue?" Li Yun said.

"But now that I'm blocked here, I can't walk through, is it difficult to fly over?" Cheng Chumo said angrily.

"Fly over?"

After Cheng Chumo's on-demand, Li Yun suddenly woke up, as if he had thought of something, he looked at Cheng Chumo excitedly and said, "Yes, since we can't go over, why don't we fly over?" ”

What?!

After everyone heard this, they only thought that Li Yun was a madman, otherwise, how could they say such unreliable words.

"Hey, you don't have a fever, do you? Fly over?! You think you're a god in the sky. Cheng asked with a shocked face.

Those who knew Li Yun knew that he did not have a fever, and those who did not know thought that their generals were burned and confused.

Li Yun had an inspiration in his heart, there was no way on the ground, so he flew from the sky, and the living could still be suffocated by urine.

"I'm not feverish, I'm not confused, we're just going to fly over." Li Yun knew that his words might be a little crazy, but as a modern three-good young man, how could he be stumped?

The principle of flight is simple, that is, to make a simple hot air balloon to carry people through the sky.

Since this place is not far from Yongzhou City, you don't need a good hot air balloon, as long as you can fly over the quicksand

It's far worse than a modern hot air balloon that orbits the world.

The truth of hot air balloons, modern people understand, but for ancient people, it is absolutely incredible.

However, there is one thing that the Chinese ancestors have already completed the flight, and that is the Kong Ming lantern.

Although I don't understand the reason, it's the same as the hot air balloon.

As soon as he said it, Li Yun immediately ordered to prepare coarse cloth and tissue paper pasted together as a flying airbag for the hot air balloon.

For example, the hot air balloon can not leak air when it comes out of the air outlet, and there is a rope to string several edges of the pocket, and the other end of the rope is tied to a manned device similar to the bottom of the hot air balloon, pay attention to uniform balance, the length of the rope should be the same, and so on.

These are all things that need to be paid attention to, after all, once God doesn't get it right, people will die.

Operated by Li Yun himself, with the assistance of others, the first hot air balloon was completed in almost half an hour.

In order to prevent the balloon from leaking, Li Yun pasted several layers of paper on a coarse cloth and mixed oil paper in the middle, so that there was no problem at all during the short-distance flight.

However, it was still necessary to conduct a flight test, and Li Yun took a wooden stick with thick legs, wrapped it with an oilcloth and set it on fire.

The torch is placed under the air bag, and the burning flame constantly heats up the hot air balloon.

In the process of continuing, the soldiers of the Tang Army were all staring at each other, you look at me, I look at you, everyone looked at each other, not knowing what Li Yun was doing.

"Grand Commander, Great Commander, what is this doing?" Someone asked Cheng Chumo.

Cheng Chumo's eyes were as wide as copper bells, and he said angrily: "You ask me, who do I ask?" ”

"The Great Commander said that he could fly, is it really fake?" Someone said.

Many people don't believe it, isn't it just like a wooden stick, a coarse cloth made of paper paste, and they still want to fly.

"Anyway, I don't believe it, if this thing can fly, I'll screw my head off and use it as a night pot." Cheng Chumo looked disbelieving.

But just as he finished speaking, he heard someone shouting: "Fly, fly, fly." ”

Someone shouted excitedly, but Cheng Chumo was at a loss, he looked fixedly, and saw that the hot air balloon made by Li Yun slowly left the ground.

He was shocked to hear the creaking sound of the rope pulling the stick.

Li Yun was sitting on a hot air balloon, and at this moment he was a full seven feet away from the ground.

Li Yun poked his head down and said, "Tie Niu, I'll screw off your head tonight as a night pot, haha!" ”

Li Yun drove the trajectory of the hot air balloon through internal forces, and after about half an hour, Li Yun landed safely.

The moment he landed, everyone was boiling.

"Oh my god, I can really fly." Cheng Chumo slapped himself several times, and it snapped, and it hurt to watch.

Ancient people knew that in addition to birds, they were immortals in the sky, could it be that Li Yun was an immortal.

The Tang Army, which was already full of confidence, was so excited that it was difficult to speak when he saw that the Great Commander had created a flying machine that could carry people to the sky.

From childhood to adulthood, everyone has a dream of flying, but they didn't expect it to come true one day, so it's really too dreamy.

Seeing that everyone was looking forward to flying into the sky, without further ado, of course, they immediately made a hot air balloon, and Cheng Chumo was particularly active.

For a time, almost all the Tang Army was making hot air balloons.

"It's called crossing the ocean." Li Yun said with a smile.

……

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Yongzhou.

"Great Commander, there is a shortage of grain and grass stored in Yongzhou City, and we are afraid that we will not last long." His subordinates came to say, "And it's not good for the soldiers to be restless, and there are even people who breed trouble, trying to disturb the morale of our army." ”

As Ashina said aggressively, with the lack of food and grass, the negative impact in the depths of human nature was stimulated, and many people began to be passive and sluggish, which bred many people to open the city and surrender.

Even some grumpy people began to beat people, Yanran didn't pay attention to the discipline in the army, anyway, they were already dying, and they still cared about what they did.

"Pass my order, those who dare to cause trouble will be dealt with in accordance with military law, and those who disturb the morale of the army will be killed!!"

The more critical the moment, the morale of the army cannot be chaotic, once the morale of the army is dispersed, then they are really hopeless.

After passing the order, Cheng Zhijie asked again: "Haven't the reinforcements arrived yet?" ”

"The ancient road was blocked by the Turks, and the army was stopped dozens of miles away, making it difficult to move an inch."

Cheng Zhijie knew the seriousness of the current incident and said: "It seems that we have only one last battle. ”

The current law can only be like this.

At the same time, the Turks also attacked, and the sound of war drums beating came from outside the city, and the sentry came to report: "Great commander, something is wrong, the Turkic army is approaching the city and preparing to attack!" ”

"Pass my order, and the whole army will fight! Datang boy, by no means a cowardly mouse, kill the enemy with me!! ”

"Yes!!"