"Add fire. Keep adding fire. "Soon." Flying Eagle One" slowly detached itself from the ground. "One step", "one zhang" and "ten zhang", the underground people silently estimated the distance.

"Damn it. Not even a rangefinder. Let me do the experiment. Shang Wen scolded to himself. What, what do you say, my lord? Tu Fei heard Shang Wen talking. I thought I had to tell myself something. "Nothing. Optimistic about the heater".

"Wow". Tu Fei said with his hands clenched into fists. Shang Wen heard such an answer. Some crashes. This is a good soldier who knows how to be polite. But this guy is not a good pilot. Shang Wen made up his mind to a conclusion.

It didn't take a while. The airship has risen to a certain height. Shang Wen could only estimate the approximate distance. It is almost two hundred meters high. "Alright. Let's start experimenting". Shang Wen shouted loudly. "Huh," Tu Fei said again.

Shang Wen couldn't help it. "You don't have to do that in heaven. Just shout yes or yes. Shang Wen took the heater and said. Here. No, it's so". Tu Fei immediately spoke. "Shake the handlebars with all your might." Shang Wen shouted loudly. "Yes," Tu Fei began to shake the handle quickly. The crank drives the gears. Turn the crankshaft and the paddles behind it start turning. The airship still didn't move, but the airship floated in the wind. The direction is definitely not the direction in which the airship is pushing on the blades.

"Push it up." Shang Wen shouted loudly.

The blades began to spin rapidly. Tu Fei turned vigorously. In the blink of an eye, sweat broke out on my forehead. But the airship still doesn't work. It's the same as the last time. It's all the wind that's blowing. Do you have to use the sails as power? Shang Wen asked himself. Well, Shang Wen shook his head. That's an immature idea.

Tu Fei shook vigorously. The paddles rotate rapidly. The reverse of the airship seems to have changed. Shang Wen looked down, as if it was. There is a small hill at the bottom. Shangwen uses this as a reference. It is now clearly not in line with the direction in which the wind is going. It seems that motivation is playing a role. But it's obviously not that big. The momentum still seems to be too small.

Shang Wen was a little helpless. No way. Shang Wen couldn't think of any good way. to increase motivation. Shang Wen pondered.

"Your Excellency. My lord. Tu Fei shouted loudly.

"What's the matter". Shang Wen said impatiently. Because he interrupted his train of thought.

"Can I rest? It's so tiring. Tu Fei said with some embarrassment.

"You can rest first." Shang Wen said.

"Oops, exhausting. My arm was about to break. Tu Fei hung his arms on the pod.

"How good it would be if you used your legs・・・・・・・," Shang Wen's ears suddenly heard such a sentence.

"What do you say. Say it again. Shang Wen asked suddenly.

"Your Excellency. Damn the little ones. Tu Fei saw Shang Wen suddenly asked sharply. I thought I was embarrassed to hear my own words. I'm going to be angry with myself.

"It's not. Hurry up and I'll say what you just said. Shang Wen said a little anxiously.

"Thank you, sir, thank you." Tu Fei said that he was going to kowtow.

"Oops, I'm burning my eyebrows. You repeat what you just said. Shang Wen had a bit of a rush to jump down.

"What words. That's it. What arm is about to break. Shang Wen pressed his anger hard.

"With the legs, the arm strength under the lower is not long, but the legs are strong." Tu Fei said.

"That's all." Shang Wen immediately turned around and walked to the heater. Start reducing the heat. I want to fall down quickly. But there is no urgency.

Right. Right. This guy is right, how am I a player. with legs. The strength of the legs is much greater than that of the arms. Again. People sit on it. It's better than shaking your arms hard. To be easier. These things are like bicycles.

Bicycle. I know if this thing can be made at the moment. The first bike was all wood. And gears. Forget it, go down and say to Xi Lao. The rest is up to them. Now I'm busy with this big guy. Do not solve the power problem. This thing is always waste. Big waste.

The airship began to slowly descend. Shang Wen couldn't wait. Shang Wen's fingers kept tapping on the pod. "Hurry, hurry." Shang Wen couldn't wait.

Finally the airship landed. As soon as it landed. Shang Wen immediately turned over and came out.

A few people waiting on the ground ran over quickly.

"What's the matter?" Meng Tian asked.

"The motivation is low, we have to improve the motivation. Hurry up. That's right. You go and ask the old man to come. Go to my tent. That's it. I had to draw the drawings. Shang Wen ran away after speaking. Meng Tian watched Shang Wen run away and went to find Xi Lao.

Shang Wen ran while thinking about the composition. The overall effect of the airship is not very good. The entire rudder had to be overhauled. Only one downward-vertical rudder will not work. At least like a submarine. Make a cross-shaped one. Don't think about the X-shaped one. It's incredibly complicated, it's only starting now, and everything has to start with the simplest. Simple operation of the cross type. But what kind of material to choose. This thing has to be big. If it's too small, it's hard to use it.

Material. Iron certainly doesn't work. It's going to crush the whole stent. With wood, the entire skeleton of the airship will be crushed. Plus the weight. The balance between the front and back will be disrupted. Holistic planning is required.

It's really troublesome to move the whole body. Shang Wen felt very tricky. Shang Wen hurriedly walked into his tent and began to take out pen and paper. First, draw the overall frame structure of the airship. But there was no inspiration. Shangwen did not make some changes to the drawings. Instead, it is placed directly to the side.

Then Shangwen began to draw the pedal crank. Then there are the changes to the paddles. There are two original blades added to four. But how to assemble. Shang Wen was a little difficult. So just put it aside. Shang Wen then framed the drawing of the bicycle. Shangwen is a bicycle that is directly copied from the offspring. And there is nothing special about it, because. Judging by the current material. Shang Wen couldn't think of any good way to improve. Just those woods. Directly this will increase the weight. The lightness and speed of the bicycle may be killed directly. Shangwen is not optimistic about this.

Shang Wen painted all these things. Just throw it away. Lie directly in bed. Tapping the beat with your fingers. Think about how to solve the problem of materials. It's a hard problem to solve. So far. The smelting of iron is begining. If it comes to applications. It's not mature at all. If wood is used. But the weight of the wood was there. On the airship, where the weight is counted in two. Undoubtedly undesirable. Originally, I wanted to use an iron pipe or something. Don't even think about it now. Materials simply don't work. There is also the fragile thematic framework of the current airship. It's all bamboo. The slightest collision can be overhauled or destroyed.

"Ugh." The more Shang Wen looks, the more headaches he gets. Turn over and continue to think.