At this time, four employees of the chamber of Commerce carefully carried over an auction item and placed it in the center of the stage.

Although the object is covered with a piece of silk, the audience can not see its true appearance, but from the appearance, it looks more like a door panel, with a height of more than 2 meters and a width of more than 1 meter.

Goodall strode to the auction and lifted the silk.

At that moment, a beam of red light projected from the roof, drawing a very bright red circle in the center of the stage, just enveloping the auction items.

At the same time, Goodall''s high voice began to ring.

"Ladies and gentlemen, the auction item now on the stage is called" mirror of the sky ". It is the first treasure to be auctioned today..."

At this time, a huge noise suddenly broke out under the stage, completely drowning Goodall''s voice. No one could hear what he said behind him. There was a trace of helplessness on his face, and he had to stop talking.

Because it''s amazing.

This is a huge metal mirror, which is inlaid in a wooden frame painted white. The surface of the frame is carved with delicate and complex patterns, which looks very beautiful.

Although the frame looks pretty good, it doesn''t surprise you too much. What''s really shocking is the metal mirror itself, which is the so-called "mirror of the sky".

People from this mirror, a clear glimpse of the world.

It''s like the entrance of another time and space, and everyone has an illusion: as long as you go through the white wooden frame, you can reach a strange space.

If you look closely, you can find that there is a stage in the "alien world", and there are many people sitting under the stage, and there are gaping expressions on each face.

It''s just strange, why does it all look so familiar?

Wait, isn''t this the stage in front of you?

Isn''t that the audience itself?

After a small number of viewers realized this, they suddenly realized that this "entrance to the alien world" was just a mirror.

Oh, my God, is this "mirror of the sky" amazing?

It is so simple placed on the stage, actually can not see the existence of the mirror, as if it completely disappeared.

Is this really a mirror?

Or has it been enchanted?

Most of the audience didn''t realize that it was a mirror.

They looked at the scene in the mirror with a look like seeing a ghost, and fell into a deep dullness.

There are also a very small number of viewers who seem to be worried that the sudden emergence of the "alien world" and the "alien people" in it will threaten their own safety.

but these woodlouse fears were quickly dispelled.

Because they heard other people talking excitedly.

"Father, this'' mirror of the sky ''is so clear. I''ve never seen such a clear mirror before..."

"Yes, this" mirror of the sky "is 10000 times clearer than my mirror. It is definitely the clearest mirror in the world."

"are you talking about a mirror? Why can''t I see the mirror at all? "

"I didn''t see the mirror, and I felt that there was nothing in the wooden frame..."

, as like as two peas, you can look at the mirror in the hall. It''s not a mirror. What is it? "

"This lady, you can wave your hand in the mirror, and you will see a lady waving in the mirror too..."

"It''s unbelievable. I don''t know what made this" sky mirror "by Haichao chamber of Commerce..."

Goodall listened to the noisy voice under the stage, just laughing without saying a word, quietly waiting for the audience to vent their excitement.

When he saw the sky mirror for the first time, his jaw fell to the ground. If the Lord didn''t explain the principle, he didn''t know why this strange phenomenon appeared.

In short, the reason why the naked eye can see objects is because of diffuse reflection.

The rough surface of the object reflects the light irregularly and diffusely in different directions. Only when the light falls on the eyeball can people see the whole picture of the object.

Even if the surface of a mirror looks smooth, if you look closely, or use a magnifying glass to zoom in, you can see that the surface is actually uneven.

In other words, one part of the light reflected by ordinary mirrors is specular reflection, and the other part is diffuse reflection. The former leads to "imaging", while the latter enables people to see the existence of mirrors.

But the mirror of the sky is different.

Its surface finish has reached an unimaginable level. In the light beam falling on the mirror, 99.999% of the light has specular reflection, and only less than 0.001% of the light has diffuse reflection.

On the one hand, diffuse reflection is reduced to the extreme, which is why the audience can''t see the sky mirror.On the other hand, the specular reflection has increased to the extreme, and the degree of detail of "imaging" has also broken through the limit that can be recognized by the naked eye, reaching a nearly "real" effect, which is why the audience sees the "different world".

of course, Goodall will not explain the principle, or let the mirror of the sky keep a mystery in woodlouse''s mind.

After the discussion subsided, Goodall began to introduce (brag) the sky mirror in detail.

"The material of sky mirror is a kind of special alloy with super high strength. It is made of 13 kinds of ordinary metals and 4 kinds of rare metals. It has been melted for as long as one month..."

This is obviously a lie.

What are the common metals and rare metals?

What''s a month''s worth of smelting?

It''s just that a small amount of stellar blue iron, black silver and several iron isotopes were added to the steelmaking process of magic energy, and it came out of the furnace in more than ten minutes, very fast.

is only Gould''s woodlouse, so he can''t detect it.

"This" mirror of the sky "took six craftsmen three years of painstaking efforts. In the first year, they polished the surface of the mirror to be roughly flat..."

"The second year is" fine grinding ", using three kinds of materials with different roughness to grind the mirror surface carefully to achieve the effect of ordinary mirror surface..."

"The third year is" ultra precision grinding ". In this step, our craftsmen will use more than five kinds of grinding materials, use different grinding methods, grind the mirror in turn, and finally get the effect you see now..."

In the sound of Goodall''s commentary, there were loud cries of surprise under the stage. From the expression of the audience, we can see that they believe Goodall''s words.

How can such a magical mirror effect be easily produced?

Three years is short!

However, this is a true lie.

Where are the six craftsmen?

What three years of polishing?

Renault just touched it on the mirror. It took no more than five seconds. It was incredibly easy.

Goodall is a big liar who lies in a row. There is no real truth in his mouth. He cheated the woodlouse who participated in the auction.

In the manufacturing process of the sky mirror, the real time-consuming step is not the mirror at all, but the frame.

Specifically, it is the pattern carved on the frame.

Because Renault is too lazy to deal with such trifles as frames, people in the industry department have to find a way to deal with the frames themselves.

The rough processing of the frame is very simple. With all kinds of advanced magic woodworking machines, the wood can be cut into the required shape in just ten minutes, and then assembled into the frame.

But the next carving can only rely on artificial, but Haichao islands, such a remote corner, where to find a suitable sculptor?

Not to mention the master, there is no sculptor who can make do with it!

So what?

At the critical moment, the magic weapons master of Rune Research Institute has to work.

These guys are worthy of being the employees Renault is willing to spend "high salary" to raise. After more than ten days, they successfully developed a simple "magic carving machine".

Different patterns are carved on the metal carving knife. When the carving machine is working, the carving knife will carve corresponding patterns on the surface of the parts. If you want different patterns, you only need to replace one carving knife.

Although this method can not carve large patterns, it is more than enough to cope with just one frame.

In general, the difficulty of processing the sky mirror is very small, and the cost is pitifully low, no more than two jinnals.

Renault can produce hundreds of pieces a day if necessary, but in order to create artificial scarcity and increase the premium, the chamber of Commerce of Haichao only provided three pieces of sky mirrors this time.

In a very warm atmosphere, Goodall set the last fire on fire.

"Ladies and gentlemen, before bidding, we have arranged a 15 minute observation time for you to observe the sky mirror from a close distance..."

"However, as this is a very valuable item, please watch it from 2 meters away, don''t touch it with your hands..."

Before he finished, the audience was boiling, and hundreds of people came to the stage, most of them women, and their faces were full of enthusiasm.