The manufacture of invisibility cloak is actually not complicated, for example, it is like sewing a piece of clothing, uh...... Well, in fact, it is a rather special piece of clothing in itself.

Its overall shape is similar to the Spider-Man's costume in the Marvel movies, from head to toe, wrapping the whole person tightly, because only by doing so can the whole body be truly invisible!

Of course, if a military boss has some special habits and has to put forward some kind of revealing suggestions, Zhao Ping'an is also willing to accept it, after all, he can save some fabric!

Well...... Yes, cloth.

This is also the biggest problem in making invisibility clothing, to be exact, the material!

Moreover, there is more than one material.

Zhao Ping'an doesn't know much about Spider-Man, but it is estimated that the dress that touches him should be breathable, so he will not be suffocated to death after wearing it, but the invisibility suit is completely different!

In view of the fact that the external material must meet the characteristics of guiding light waves, its molecular structure is somewhat special, similar to nylon, and it is conceivable what will happen if people are stuffed in it?

Therefore, in addition to an external material that can achieve the effect of stealth, a complete stealth cloak also needs to contain another layer of anti-stealth material that can satisfy both breathing and internal observation.

To be honest, if Zhao Ping'an is allowed to ponder these two materials by himself, with his current level, the possibility of being able to study them is very small, at least, don't even think about it in a short period of time.

But fortunately, there is a detailed explanation on the 'Invisibility Cloak Manufacturing Book', so at the moment, in fact, all he has to do is draw a scoop with a gourd.

First of all, he needs to make the outer transparent material of the invisibility suit according to special physical properties, and then implant a one-dimensional semiconductor material called 'zinc oxide nanowires' into it to achieve the purpose of making the material invisible.

After sending a text message to Cao Zheng, Zhao Ping'an turned off his mobile phone, then locked the door of the laboratory, and began a long and boring research.

……

Time passed in a hurry, and in the blink of an eye, half a month passed.

That evening, the door of the laboratory was finally pushed open, and a bearded figure slowly walked out of the room, and the bright moonlight spilled on him through the glass window of the outer layer of the research institute, making him moan in comfort.

"Wow! It's finally seeing the light of day. ”

Because this experiment has extremely harsh requirements for light, the laboratory is almost completely sealed, let alone moonlight, and during a critical period, Zhao Ping'an didn't even dare to turn on the lights.

Again, engaging in scientific research or something is really not a job that people should do!

At this time, his elbows were slightly bent, his palms were facing up, and he lay flat on his chest, as if he was holding something, but when he looked closely, he was empty, which was a little strange.

Suddenly, he made an extremely strange movement, his left hand continued to maintain this position, while his right hand turned from side to side, as if he was unwrapping.

Suddenly, a strange scene happened, as his right hand shook violently in the air as if it were a quilt, and his entire arm, including half of his body, actually ...... Just disappeared out of thin air!

Oh, my God! This scene is too terrifying, looking from afar, in this deserted corridor, there is a person who is only half of his body standing!

It's like being split in half with a knife!

Luckily, it's time to get off work, otherwise if someone suddenly passes through the corridor at this time, they will have to be scared out of their minds!

Yes, after half a month of painstaking research and development, Zhao Ping'an finally created the external stealth material of the invisibility suit!

Anything that is under its cover can disappear instantly, and without regard to high technology, it is impossible to visit it at all unless you touch it with your hands!

Just like the sheet size material he was holding in his hand at this time, if it weren't for the use of a special laser technology to mark it on its surface, Zhao Ping'an wouldn't even dare to put it down easily, because once he put it down, it was very likely that he would never be found again.

Of course, this is only a semi-finished transparent stealth material on the outside, while the real finished stealth suit is composed of an anti-stealth material layer on the inside, so under normal circumstances, as long as it is reversed, it does not look much different from ordinary clothes.

"Go home and sleep!" God knows how he came over in the past half a month, he wanted to vomit after eating vacuum food, and he even thought about brushing his teeth and washing his face, let alone taking a bath!

The most luxurious thing for him now is to take a good shower and then get a good night's sleep.

……

The manufacture of the internal anti-stealth material layer of the stealth suit, in terms of technical difficulty, is more complex than the appearance of the stealth material, it must not only have permeability and detectability, but even more difficult, it must be integrated into the external stealth material!

This is undoubtedly a great challenge for Zhao Ping'an!

Moreover, he didn't have much time left.

Because in another month, when the spring flowers bloom, the annual Beijing National Defense Science and Technology Exhibition will be held!

As the most professional high-tech and information technology exhibition in China, the Beijing National Defense Science and Technology Exhibition is also one of the few large-scale exhibitions involved in the field of military industry, the organizer is said to be the government, aiming to absorb private high-tech for the use of the country, and every year there will be news that companies will transfer technology to the country.

Therefore, Zhao Ping'an really doesn't want to miss it!

Otherwise, wait another year.

As early as a week ago, he had sent Zheng Xiling to Beijing, naturally for the purpose of the booth.

Although Anping Technology is now a big name, but Bi Chu was involved in the military industry, and he only acted at the time node when this exhibition was about to be held, and it was not easy to get a good booth, which can also be seen from the fact that Zheng Xiling has not come back until now.

However, Zhao Ping'an is not worried about this, just like the original friction mobile phone, the booth 106 near the toilet in Hall E7 of the Shanghai New Convention and Exhibition Center is bad enough, right?

But didn't it make him angry in the end?

He is confident in his product! All he wanted was a ticket and that's it.

After resting for two days, after completely adjusting his state, Zhao Ping'an plunged into the laboratory again.

His move also made every employee of Anping Technology admire, after all, how many people in this world will work so hard after earning hundreds of billions of net worth?

Success is no accident, and often the greater the achievement, the more effort is put in behind it.

Time passed day by day, sunrise and sunset, people came and went in Anping Science and Technology Research Institute, everyone went to work and got off work, opened the door and locked the door, only the exclusive laboratory in the S area on the second floor, but the door was always closed, and the person inside was like a tireless machine.

The level of concentration is heart-wrenching!