In a vacant lot on the outskirts of the city.

A bamboo basket large enough to hold two people, a special hemp rope, a ventilated jar filled with whale oil, and a large balloon sewn from animal skins.

Flying is one of the greatest desires of human beings, almost everyone has fantasized about flying, in this Douluo World, when you can fly, it means that you can look down on all beings.

Flying away from the sky is a manifestation of the otherworldly.

"Flying is that simple?"

Jing Ziyi looked at the rudimentary hot air balloon liftoff device in front of him, which was so simple that anyone who had seen Gu Zhi's production process could do it.

Jing Kuan, who was making bird wings from balsa wood according to Gu Zhi's request, glanced at his sister and said, "Doing the most difficult thing with the simplest tools is not easy in itself."

My sister is just here to be a student, and he knows that everything Gu Zhi shows has to be used in business, if the cost is expensive and the project is complicated, how can it be used for people's livelihood and commercial use.

"The Evil God"

"If you want to fly, you have to figure out why the fruit on the tree falls to the ground and not to the sky."

Gu Zhi let go of his hand as he spoke, and a small piece of wood in his hand fell straight down, seeing this scene, the attention of the sister and brother began to concentrate, and their brains moved.

Isn't it common sense that things fall to the ground? But what is the knowledge behind this?

I just listened to Gu and said directly: "Anything thrown out will fall to the ground, which shows that the earth has a suction force for things, the world has a name for it called gravity, but the stricter name should be gravity, two objects with mass, will have a kind of suction to each other, the greater the mass, the greater the suction, this is why people will stand firmly on the ground, even if they jump up for a short time, they will fall back to the ground."

Jing Ziyi and Jing Kuan's child's hole suddenly enlarged, and suddenly felt enlightened, as if suddenly the understanding of the world was clearer.

Jing Kuan, who was unrestrained in thought, immediately drew inferences: "Because the clouds in the sky are very light, the suction of the earth to the clouds is very small, so the clouds can float high in the sky.

He blushed, dancing with joy, the knowledge that Gu Zhi spoke was really good, and the root cause had nothing to do with soul power.

It can be mastered by all living beings.

Just as Jing Ziyi was about to nod his head and echo his brother, he saw Gu Zhi shaking his head.

"The clouds in the sky can float in the sky, not only because the clouds are very light, but also because the air provides buoyancy to the clouds, just like a boat in the water, you two are genius soul masters, you should know that this air is not as empty as it seems."

After saying that, Gu Zhi took out a piece of hanging vine, which was produced in the Lost Continent, and was a material for the Sky Dragon to build a nest, and there was no doubt about the quality and air.

The vine, which was more than a foot long and looked a little yellow, was quietly suspended in the air after he let go, with no soul power fluctuations and no wind to hold it up.

"So flying is all about finding a way to fight that suction force, and now you two are going to stand on the basket and experience what it's like to take off, and remember to look closely, because you'll see why the wind is formed."

The two sisters and brothers nodded heavily, Jing Ziyi, who was the elder sister, no longer felt that this hot air balloon was shabby, and the younger brother beside him took out the flint, and suddenly sparks flew when he rubbed it, igniting the whale oil in the jar.

A flame swished up, and the hot air balloon visibly inflated to the naked eye, and then the two of them felt their feet swaying, and they were so carried into the sky by the hot air balloon that Gu Zhi had spent a few minutes tossing.

"Brother, we flew, really flew, it turned out that flying was so simple......"

As soon as he was ten meters above the ground, Jing Ziyi began to shout, this is a privilege that only the strong above Contra Douluo have when flying, and now they have done it.

Jing Kuan was not carried away by the joy of the heavens, but stared at the flame, carefully feeling the rising hot air.

A flash of inspiration flashed in his mind, and he suddenly thought of answering.

It's the flame, it's the heat, no, to be precise, it's the temperature difference between the two that creates the air flow.

That is, the wind.

"Sister, Brother Gu is showing us the essence of the world, I really believe his words now, he is the greatest wise man I have ever seen."

"Well, I also believe it, he is an eighty-level Contra."

Hey—

As a younger brother, Jing Kuan glanced at his sister with some doting, and said secretly: Compared with the matter of Contra, what Brother Gu is going to do next is the real shock.

To be able to participate in such a thing, I have no regrets in this life.

A jar of whale oil can't fly for long, and the two siblings quickly fell, and it took half an hour to fly out for three miles, and the direction could not be controlled at will.

The altitude of the flight is only 500 meters.

"That...... Gu Zhi, how old are you this year? ”

After experiencing the heavens once, Jing Ziyi's curiosity about Gu Zhi could no longer be suppressed, she was also a woman who had seen the world, and had been to Mingdu, the capital of the Sun and Moon Empire, which was a super city with a resident population of 50 million.

A genius like her with innate ninth-level soul power can find the same kind, and there are even one or two super geniuses with innate soul power, which can be the future star taught by three ninth-level soul masters.

But she still didn't feel convinced, because the super genius has more or less some problems, such as looking at people's faces with nostrils.

But at this moment, Gu Zhi, who was dressed in coarse linen clothes, seemed to be glowing.

Gu Zhi groaned for a moment, suddenly looked at the southern sky, and replied in a somewhat complicated tone: "It's almost twenty years old."

It's been three years since I left Douluo Continent, and I don't know what happened to my family.

"Then my brother Gu is not wrong, you are the same age as my sister."

Jing Kuan, who landed on the ground, came to the place where he made the glider as soon as he got busy, and after a day, he had some ideas about gliding.

"I was born in January and should be older than you, so don't you want to call me sister."

Jing Ziyi, who was already twenty years old, slowly approached Gu Zhi, a pair of moist apricot eyes rippling with Yingying eyes, coupled with a smile on the corner of her mouth, making the tears under her eyes more and more charming.

"But I still like to hear others call me by my name, Gu Zhi, you will call me Ziyi in the future."

It's a sin, even if I've worn the worst clothes to fascinate women.

Gu Zhi, you are really an out-and-out arsonist.

"I know, let's continue to talk about the knowledge of flight, and strive to design a suitable aircraft for sale as soon as possible."

He replied calmly, untouched by the woman's lust. And after speaking, he walked to Jing Kuan's side, helped him build a glider, and answered some questions at the same time.

It turns out that although hot air balloons can go to the sky, they do not have much commercial value and can only be used to demonstrate the principle of flight.

After all, it is too easy to imitate, and there are no strong enough technical barriers.

But the gliding wing is different, Gu Zhi and the three of them found a hundred-meter-high cliff, and after experiencing the fun of gliding, Gu Zhi and Jing Kuan started a discussion, and finally made some designs on the wings, not only adding two first-level wind breath arrays, but also redesigning the wings.

The improved glider was named Sky Wings by Jing Ziyi, which not only greatly enhanced the effect of gliding, but also had the ability to turn wantonly, and could rise against the wind with the blessing of soul power.

After making the first mature product, Gu Zhi and Jing Kuan also discussed the name of the Chamber of Commerce, and according to the concept that everything in the world will change and the only truth will remain the same, the two of them decided to name the Chamber of Commerce as the Eternal Chamber of Commerce.

But a glider alone isn't enough to hold up a shop.

Even if Gu Zhi has designed a parity, light luxury, and the ultimate model.

However, cars and yachts often have hundreds of parts, and it is really not a project that can be completed in a short period of time, so Gu Zhi set his sights on the three aspects of food, housing and clothing, but although the technology of food processing is simple, it can not form a strong technical fortress, and it is easy to be copied by others.

There is nothing to improve about the building, all that can be done is the furniture, but the air conditioner, the washing machine, the TV set...... Again, it's not a project that can be completed in a short period of time.

Therefore, after some thought, Gu Zhi still came up with clothes styles that transcended the times, such as witch clothes, Hanfu, skirts, robes, sailor suits, OL uniforms, black silk, fishnet stockings, tights, hollows, lace......

When Jing Kuan and Jing Ziyi picked up Gu Zhi's drawings, they couldn't help but look at him, "It turns out that you are this kind of person".

It's a pity that Gu Zhi, who is accustomed to seeing strong winds and waves, ignored their gaze and said calmly: "The mall is best divided into two areas, distinguished by gender, in order to improve the competitiveness of our clothes, and the material I have designed, it is special cotton yarn and silk, in addition, our business emblem must be engraved on the clothes."

The price starts with a flat 100 gold coins, whether large or small. ”

The technology of making clothes is almost announced, and as long as there is a style, it can be copied, so Gu Zhi didn't want to sell these clothes to ordinary people at all, and defining these clothes as luxury goods can slightly imitate friends and merchants.

Jing Kuan flipped to his underwear and stopped, trying to eliminate some of the images that could be cast, and said: "These can enrich our shop, but they don't seem to express the concept of our chamber of commerce, I think we can add some technology to these clothes, such as adding anti-gravity magic circles to skirts, fog magic circles, or adding defensive magic circles to clothes to accelerate magic circles."

Jing Ziyi, who had read all the drawings, ignored his younger brother's idea that everything should be added with some technology, and his eyes were locked on Gu Zhi.

She asked, incredulously, "All you came up with?"

At this moment, a crack appeared in the flawless Gu Zhi in her heart, although she knew that boys were all guys, but Gu Zhi showed a degree of lust that was completely beyond her imagination.

How much does a man have to be able to design such unashamed clothes.

"I just saw it by chance, these are the works of a group of designers, they are men and women, when I first started to look at it, I would also feel embarrassed, but these are just clothes after all, and the value of their existence is for people to wear."

Gu Zhi's face was straight, and he said in a pedantic tone: "The value of clothing is to cover shame and keep warm, but with the enrichment of people's spiritual world, clothing has one more value, that is, dressing up to make people look more beautiful."

I have to admit that these ideas are very bold clothes, which bring out the beauty of people to the fullest, and can be regarded as reaching the highest point of a discipline. ”

Hearing this, Jing Kuan, who was a little shy, nodded, and Jing Ziyi, who thought of trying on these clothes, blushed shyly, to tell the truth, she admitted that what Gu Zhi said was very right, if these clothes styles were seen by her sisters, maybe they would praise Gu Zhi to the sky on the spot.

Treat Gu Zhi as a confidant.

"I'll take care of the clothes, you two big men can avoid it, and I will make the finished product as soon as possible."

As soon as he heard this, Gu Zhi immediately nodded in agreement, and said, "Ziyi, everything is difficult at the beginning, whether our Chamber of Commerce can make a splash depends on your contribution."

Jing Ziyi, who put away the drawings on the table, pointed at the tip of her nose with her index finger, and looked at herself with a puzzled expression, she knew that she was a few pounds and a few taels, and she couldn't understand a few words of scientific knowledge told by Gu Zhi, which was far inferior to her younger brother, not to mention that her younger brother could draw inferences.

She could help with the carving of the soul guide array, but Gu Zhi and Jing Kuan were studying how to simplify the array, which made her helpless.

In the past few days, she has been a character who does errands, at most she is an eye-catching secretary, but she didn't see Gu Zhi look at her a few more times, which made her very frustrated, and most of her arrogance was gone.

She asked unconfidently, "How can I help?"

"Think about it, if a few famous big beauties in combat uniforms and gliders pass over Half Moon City, will it attract attention, and then let them publicize that these are all purchased from our Eternal Chamber of Commerce, and the customers of our shop will come to visit."

Gu Zhi told the role of advertising seriously, you must know that the fragrance of wine is also afraid of deep alleys, and the glider is a flying commodity, and no one has made a flying soul guide before this, and it has to be a thousand years later, someone proposes the concept of a simulated soul guide, and someone will make a flying soul guide.

So, in order for customers to trust, they must first showcase their products.

Besides, the customers faced by the Eternal Chamber of Commerce are the aristocratic class with strong spending power, otherwise how can they buy a few gold soul coins for clothes that cost a hundred gold soul coins, and the glider is even more outrageous, plus the best model with gilded feather patterns, the price is nine thousand nine hundred and ninety-nine gold coins, and the cost is only one hundred gold soul coins.

Because of this, they had to add some definition to the commodity, such as that it was a symbol of nobility, a manifestation of status. As an aristocrat, he naturally feels superior to others, and has an obsessive preference for goods that can express his dignity.

Jing Ziyi found the drawing marked with the combat uniform, the fabric was used a lot, basically only one face was exposed, and the sense of line was not bad, but this was a tight-fitting style of clothing, which completely outlined the woman's curves.

It's more tempting to wear than not to wear.

"I see, I'll take care of this."

After speaking, she took the sorted out drawings in her hand, stopped when she walked to the door, and said in a weak voice: "In return, Gu Zhi, you have to accompany me to a banquet."

Before Gu Zhi could agree, she fled the scene.

"Brother Gu, my sister, she has taken a fancy to you." Jing Kuan said with great certainty. The banquet in his sister's mouth was held by the family to introduce young talents to her, if she brought Gu Zhi directly to participate, wouldn't it show that she had a famous flower?

If excellence is a sin, then I am a great sin.

Gu Zhi patted Jing Kuan, whose face had changed greatly, and said with some shame: "Then you have to tell her as soon as possible that I not only have a fiancée, but also six confidants."