Han Xiao wrote down the material list and sent it to Feng Jun.

"My god, you want Bok composite colloid, Fal 4 solvent, twelve sets of miniature electronic components, do you know how much these things cost?"

"I have money."

Feng Jun was speechless. He just remembered that Han Xiao was different from him, a civil servant who earned a fixed salary. He didn't know how much money he made from mechanical orders. He was a standard nouveau riche.

An hour later, Feng Jun delivered three suitcases to Han Xiao's studio.

The inside of the suitcases was lined with black. The first case contained three ten-centimeter-long transparent tubes filled with a milky white, cloudy, viscous solution. This was Bok composite colloid. The second case was a small bottle filled with a light blue solution, Fal 4 solvent.

Both materials were new types of materials that could only be synthesized in the laboratory and were very precious. Just these few small bottles cost 120,000.

The third case contained twelve sets of miniature electronic components. Each set was only about the size of two or three fingernails and very thin. Under a microscope, electronic traces could be seen all over them. They were usually used in precision instruments and cost a total of 60,000.

After receiving the materials, Han Xiao began to manufacture them behind closed doors.

First, he cut out a human face mold from a plastic board, opening holes for the eyes, nose, and mouth. Then, he used a steel needle to prick twelve points on the mold, distributed in different locations.

Han Xiao turned on the computer and connected the miniature electronic components with a special reading device. He reset and synchronized all the miniature electronic components, sharing the same program. He used a scanner to record his facial features, then collected thousands of appearances into a database, collecting the differences in portraits, and then began programming. This work lasted two or three hours, and a simple simulation program was created.

Taking out the Bok colloid and Fal 4 solvent, he took out unopened chemical instruments from the warehouse, test tubes, catheters, various instruments, etc. After a while, through a complicated chemical process, he mixed the two immiscible materials, and then through a program mainly based on ionization reaction, formed a new composite material, neither milky white nor light blue, but flesh-colored.

This new material combined the characteristics of Bok colloid and Fal 4 solvent and also had good electrical conductivity. It was the basic material for intelligent simulation optical masks, using the knowledge of [Basic Biochemistry].

Han Xiao carefully placed the miniature electronic components on the twelve marked points of the mold, gently poured the new material solution, and sealed the mold after several processes, waiting for the solidification reaction.

Waiting with a stopwatch, as soon as the time arrived, Han Xiao immediately opened the mold. A mask as thin as a cicada's wing lay quietly in the mold. At this step, the manufacturing process was coming to an end. Han Xiao finished the last few steps, and soon it was completed.

He reached out and pressed the position of the electronic components. There was a slight sense of hardness, but the overall feel was very smooth. The surface of the mask was coated with liquid crystal. When a finger pressed on it, colorful halos appeared around the pressure point, just like the change when pressing on an LCD screen.

[You have created the [Intelligent Simulation Optical Mask], you have gained 5000 experience!]

[Intelligent Simulation Optical Mask: Face equipment, can change facial features at any time, disguise identity, extremely low energy consumption, charging for five minutes, lasts for ten hours.]

This mask cost nearly 200,000 to make.

Han Xiao picked up the mask and put it on his face. The touch was cool and breathable. He came to the mirror and pressed the electronic component on his cheek with his finger. The facial features in the mirror suddenly changed, turning into the face of a strange man. Han Xiao pressed it a few more times, and the facial features changed again, all completely different faces.

This was not an ordinary human skin mask, but a changeable mask that could change its appearance at any time, a stealth artifact!

The electronic components entered a simulated portrait program, located in the key parts that determine the appearance of the face. Through the built-in database, they randomly matched and formed images. The mask coating was like a screen, fitting the edges and corners of the face, completely three-dimensional. The mask was very realistic. As long as you press the switch, the appearance can be randomly simulated and changed.

The intelligent simulation optical mask, referred to as the simulation mask, has four functions. The first is simulation, randomly changing facial features. According to the program set by Han Xiao, the appearance will not jump out of the scope of human beings, so you don't have to worry about the appearance of an earth-shattering ancient god.

The second is memory, which can record three appearances, which can be replaced.

The third is reset, which can restore three memory appearances at any time, so you don't have to worry about losing the original disguise after the simulation.

The fourth is scanning simulation, which can quickly scan the face of a humanoid target through the detector hidden in the mask and become the appearance of the other party, which can achieve 70~80% similarity, a latent divine skill.

Han Xiao played with it a few times, then took off the intelligent simulation optical mask and went to headquarters to visit Gu Hui.

"You made a disguise mask?" Gu Hui asked.

Han Xiao smiled and put on the mask.

He was careful. Before coming, he had already memorized the first appearance, an ordinary-looking young man. He did not expose the function of the mask that could change facial features at will in front of Gu Hui.

This function was Han Xiao's trump card.

Gu Hui took a look and thought that Han Xiao was wearing a human skin mask. The Thirteenth Bureau could also make it, but it was not as realistic as Han Xiao's, and this mask was very light and seemed easier to carry.

"Are you interested in submitting the drawings to the bureau?"

Han Xiao "smiled" and said, "It's just a human skin mask, what kind of drawings are there? Can't you make it yourself?"

Gu Hui thought it made sense, so he didn't insist. Seeing this, Han Xiao secretly breathed a sigh of relief.

He got away with it!

Han Xiao quickly changed the subject, "Then can I participate in the operation myself?"

Gu Hui thought for a while and nodded, "The higher-ups have communicated with Hai Xia. The Hai Xia Military Intelligence Agency has decided to take joint action with us. This time, you will follow your team."

The Dark Crow Valley base was located on the border of Hai Xia. How could they allow others to sleep soundly beside their bed? Han Xiao guessed that Hai Xia would not refuse.

Confirming that he would participate in the operation, Han Xiao suppressed his excitement and asked, "When will we leave?"

"Don't worry, it takes time to mobilize the troops, and the staff department needs to come up with a specific strategy with Hai Xia first. It is estimated that it will take at least half a month before we can leave."

Half a month was enough for him to complete all the modifications.

...

Back in the studio, Han Xiao wrote down the focus of his work for the next half month on a piece of paper.

First, increase the number of trump card blueprints.

Second, purchase a vehicle for the team's actions. As the logistics officer, he needed to provide equipment maintenance and supply for the team, so he needed a logistics vehicle.

Third, strengthen Zhang Wei's Warbringer armor.

"A big project, let's do it one by one."

Han Xiao shook his head.

First of all, he needed stronger combat power, which could be considered from the following aspects.

First is defense, which is the aspect he values ​​most. Surviving is the most important thing.

Ranged attack power, this requires stronger firearms. Two Berserk Eagles are barely enough, just strengthen them once.

Melee weapons, although Han Xiao prefers ranged, he also has to prevent others from getting close. The light-duty power arm needs to be modified.

The ability to move in harsh terrain, the Cloud Swallow Gliding Wings have been collecting dust on the panel for so long, and finally have a chance to take them out and use them.

Finally, there is the ability to attack fortifications. Considering the situation where he is surrounded or needs a team battle to stir up trouble, then he needs powerful means to break the situation forcefully. Art is a good choice.

Explosion is art.

Han Xiao quickly had an idea, and quickly wrote down the material list, asking Feng Jun to pick up the goods from the warehouse. This batch of materials was worth 300,000, which was very expensive.

Feng Jun was getting more and more helpless with Han Xiao, feeling that he was developing towards being a nanny. The order from above was to protect Han Xiao in all aspects. Dealing with Han Xiao was so uncomfortable. The higher-ups seemed to be very clear about this, and gave him a raise as a consolation. What else could Feng Jun say? For a monthly salary of 25,000 and five social insurances and one housing fund, he could only do it.

"Perhaps this is the greater the ability, the greater the responsibility."

Feng Jun looked at the sky at a forty-five-degree angle, sighing endlessly.