"Yeah." Frey nodded, stretched out her hand and waved it in the sky. In the past, she and her elder sister, as well as other friends, chased in the sky and jumped off the towering rocky mountains until they reached the limit. Spread your wings and fly, that is the most free and happy time, the whole sky belongs to them.

She can chase the birds, fly into the white clouds to catch the mystery, play in the water on the river, all of which used to be her game activities, but now she stays in the hanging basket and looks at the sky where she used to play.

Liu Feng looked at the mountains in the distance and asked softly, "How long will it take for your bird orcs to fully grow their wings?"

"More than a year." Frei looked back at Liu Feng, then looked up at the sky, suddenly jumped up, and stood lightly on the edge of the hanging basket.

"..." Liu Feng's pupils tightened and his mouth was slightly opened. He was really startled, thinking that the girl was about to jump off.

"Flei, come down quickly, it's dangerous up there." Liu Feng said in a deep voice, the edge of the hanging basket was only a few centimeters wide of wood, and it was high in the sky. The girl dared to stand on the edge of the hanging basket, and when a gust of wind came over, it shook. Too powerful to fall.

Frei stood on the edge of the hanging basket and opened her hands as if embracing the blue sky. Hearing Liu Feng's words, she turned her head to see his serious face, and looked at each other silently for a few seconds.

"Oh." The girl replied softly, flexibly returning to the hanging basket, and this time she stood obediently and stopped making trouble.

"In a few days, I will let you fly in the sky." Liu Feng sighed.

He was really afraid that the girl would jump out and fly freely. That would be a tragedy. After all, shutting down the girl is something he really dared to do. It would be safer to get something he expected and hang her appetite. .

"Really fly?"

Frei turned her head sharply, her green eyes stared straight at Liu Feng, walked towards him, jumped up and rushed over, crawling towards Liu Feng like a koala, her cheek against his cheek.

"..." The corners of Liu Feng's eyes twitched, looking at the girl with the tip of her nose pressed against the tip of her nose in front of her, why is this move again?

"Really fly, let you glide in the sky." Liu Feng said helplessly, moving slowly in his hand, and pushed the bellows again.

In addition to hot air balloons, there are several ways to make people "fly" in the blue sky, such as gliders, gliders, etc.

In particular, the glider, a new type of flying product on the earth, is a game that many glider enthusiasts think are also brave, and it is also a challenge that many extreme athletes want to challenge.

If Liu Feng was asked to choose, he would choose a glider, a relatively safe and mature flying device. In fact, he also wanted to try the feeling of flying in the blue sky.

"Really?" Frey got closer again, the tip of their noses were flattened, and their mouths were only a little apart from each other.

"Yeah." Liu Feng snorted softly, looking at the girl's emerald-like eyes, and sighed that she was so beautiful.

"Flying now?" Frey looked at the deep eyes in front of her, her cheeks blush a little, and her breathing suddenly became a little short.

"After a while, things aren't ready yet." Liu Feng reached out and grabbed the girl's back collar and pulled away from him.

It's time to add some charcoal or the hot air balloon will go down.

The collar of Freihou was carried by Liu Feng, her limbs were hanging down, and she did not struggle like a little milk cat. She looked at Liu Feng quietly, and said amazingly, "Lord Liu Feng, when will you marry me?"

Chapter 0407 The concept of the alien version of the 'Air Force'.

"Huh?" Liu Feng was stunned, looked at the girl's indifferent face, left the bellows with his other hand, and flicked on Frei's forehead, angrily, "What nonsense are you talking about again, wait a while. We will discuss this issue in the next year.”

He was a little helpless, why did the girl still think about this matter? He hasn't been so beastly enough to attack a thirteen-year-old girl, and when the other sister comes to her door, it will be a hundred words.

"I'm not too young." Frei said indifferently, her green eyes staring straight at Liu Feng, as if you were going to give me an answer.

"Sixteen, no, eighteen, when you are eighteen, I'll marry you." Liu Feng used the trick of procrastination and dealt with it today.

"Fourteen years old." Frey swayed, her long white hair fluttering in the wind, her indifferent expression a little serious.

"Sixteen years old, can't be less." Liu Feng said quickly, fourteen years old? The girl will be fourteen next year, do you want him to get married next year?

He found that the girl was very smart. Every time the two of them were alone, he would bring up the question of marriage. He was a little weird. He was forced to marry again by the girl.

"I wrote it down." Frei shook her body slightly, broke away from Liu Feng's hand, and came to the side of the hanging basket, looking at the blue sky, the corners of her mouth rose inadvertently, obviously in a good mood.

"Really..." Liu Feng felt a little pain in his head. He was going to marry in three years? A sixteen-year-old girl? Although in this era for girls, it is almost the age of marriage.

Liu Feng shook his head and put this matter away. There were still three years left. He was not in a hurry. He quickly added some charcoal to the shelf and pushed the bellows several times in a row.

"Lord Liu Feng, how do people fly?" Frei asked impatiently and curiously. For her, there are three things that concern her now. One has just been resolved, and the rest is Feixiang and her elder sister.

"Using something like a bird's wings to jump from a high altitude, you can fly." Liu Feng replied softly, the girl talked a lot more than usual today, which is a good thing.

"Wings? Made of wood?" Frey turned her head and frowned, "Can't fly."

"Uh..." Liu Feng was stunned for a moment. How could she feel what the girl meant when she said this? Did she try to make wings out of wood?

"I tried, and I fell." Frey said indifferently, her green eyes flickering, and she turned her head to look at the blue sky outside.

More than a fall, she made wooden wings and jumped off Shizhu Mountain. If her elder sister hadn't appeared to save her, she might have become a meatloaf.

"..." The corners of Liu Feng's mouth twitched, how could he feel that the girl must have had a lot of fun and silly things before, and she felt pitiful in addition to being funny.

"It's not wood, but a special fabric and steel as a bracket, and then you can make a glider that makes people fly." Liu Feng said calmly, the glider reminded him a lot.

For example, can gliders and hot air balloons form an 'air force' force? Of course, this air force is not an air force with planes and fighter jets on the other side of the earth, but a pseudo-air force.

Gliders need high slopes or headwinds to take off, but if a hot air balloon takes off, as a take-off point for gliders, the problem of limited terrain can be solved.

Once the problem of the limited terrain of the glider is solved, it will make a big difference. The glider unit is in the sky, can detect the enemy's situation, can go deep behind the enemy, as long as it is equipped with a parachute, it can sneak in secretly, and then a decapitation operation - perfect.

"I don't understand." Frey said indifferently, she couldn't imagine how it could make people fly with fabric and heavy steel.

"You'll know when it's done." Liu Feng said softly, asking him to explain the principles of lift and resistance, and the girl wouldn't listen.

As for the glider troop, he decided to put it on the schedule, and the training of the personnel should also start, especially the hot air balloon needs at least four to serve as the take-off platform for the glider tribe.

"Oh." Frey responded indifferently, and stopped talking, quietly looking at the blue sky.

After staying in the sky for another ten minutes, Liu Feng saw the girl's body trembling slightly. It was clearly too cold and she was still holding on.

"Go on." Liu Feng calmly said, before waiting for the girl to respond, he stopped pulling the bellows, and when the hot air from the charcoal was no longer enough, the hot air balloon slowly descended.

Frey didn't speak, she looked at the sky quietly, and she didn't say a word until she reached the ground. Today is a very happy day for her.

"Master, how's it going? Is it fun to be there?" En Li's brown eyes were full of anticipation, and she trotted over to grab Liu Feng's arm and asked, "It shouldn't be dangerous, right?"

"There will be no danger." Liu Feng shrugged and said.

As long as the hot air balloon does not fly too high, there is no danger. The air bag can buffer the falling speed, just like a parachute, unless the air bag is completely ruptured, or it encounters bad weather.

"Lord City Lord, is there anything else to improve?" the old carpenter asked next to him.

"If the airbag is bigger, at least four people should be able to sit on it. This is too little." Liu Feng said slowly.

If it is used by the glider unit in the future, the hot air balloon must accommodate at least four people, otherwise there will be a lot of materials that cannot be transported.

"Yes." The old carpenter said respectfully and wrote it down immediately.

"There is also a need to change the fuel. Find some more flame-resistant materials. After flying into the sky, it is impossible to fly down for a short time."

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