Roaming the universe, all thanks to your many dark skills!

"Kill." Rosen ordered.

A crack suddenly appeared above the mechanical spider's head and chest, revealing a crossbow about a foot long from inside, and with a whoosh, it shot an arrow at Shi Jin.

Shi Jin was already dumbfounded when he saw that the spider could talk and move. Now when he saw it shooting an arrow at him, he subconsciously wanted to hide to the side.

But how could his movements be faster than the crossbow arrow that was within two meters away?

With a bang, he was hit directly on the forehead.

It didn't hurt, just a little cold, but the shock it gave him was so strong that he stood there in a daze, not saying a word for a long time.

"Rosen, can it move?" Wu Liuyi asked.

"Of course." Rosen said, "I added your voiceprint to its main control chip, and you can also control it."

"Take two steps forward." Wu Liuyi said.

The mechanical spider didn't move at all.

"You have to call its name," Rosen reminded.

"Black Widow..." Wu Liuyi just shouted, and the mechanical spider moved slightly, and two cameras were facing him, as if looking at him.

"Come here." Wu Liuyi waved his hand.

The mechanical spider moved and walked towards him.

Although it is made almost entirely of steel, its movements are continuous and smooth, with no lag and almost no sound.

It feels like a big living spider that can pounce on the enemy at any time.

The reason why he can reach such a level is, of course, closely related to Rosen's LV6 mechanical expertise, innate skills: scientific research expertise, LV8 dexterity and LV3 computer proficiency.

Without these, he would not have been able to use some relatively simple tools and materials available on the civilian market to make a mechanical spider almost by himself.

However, this mechanical spider named Black Widow is different from the pair of mechanical spiders from the planet Cybertron that he got on Mars.

Whether it is the shape or the internal structure, there are basically not many similarities.

However, some of these technologies are inextricably linked. After all, Rosen has been studying the structure of Transformers for a long time, so it is normal for him to borrow some of them when designing Black Widow.

Of course, Black Widow can move not only because of the integration of Cybertron's technology, but also the advanced technology of Stark Industries and Oss Corporation.

Anyway, there are no such two technology giants in the world, so he is not afraid of being sued for infringing on patented technology. Besides, he is a major shareholder after all, so it is no big deal for him to borrow the technology that he owns.

However, due to the mediocre level of current scientific and technological materials, Rosen believes that the Black Widow still has many problems.

For example, although the energy system used by the Aos Group is quite good, it is far inferior to the Ark micro-reactor of Stark Industries.

Even due to the limitations of material type and quality, the battery Rosen made by hand is quite mediocre. At most, it can only allow Black Widow to run more than 50 kilometers while carrying a load.

In his opinion, this thing is even more rubbish than the battery in an electric car.

In addition, the current cameras are really very bad. The miniature cameras he tried his best to get are actually not miniature at all, and the pixel level and shooting distance are also average.

In other words, even though it has eight eyes, it is shortsighted.

Even worse are the sensors and main control chips.

There's really no way to deal with this thing. It's not that Rosen is reluctant to spend money, but he can't buy what he wants even if he has money, so he can only make do with what he has and try to make do with what he has.

The reason why Black Widow behaved relatively smartly was that Rosen thought that if the hardware was not good enough, he could rely on software, so he spent a lot of time writing the corresponding program.

The hard work was not in vain. Not only did Black Widow become a lot smarter, his computer proficiency was also upgraded to Level 4.

Now watching the Black Widow move freely and quickly and accurately, Rosen's heart was filled with pride.

However, with Shi Jin and Wu Liuyi only having junior high school and high school education levels, they naturally could not see the technical content contained in Black Widow's seemingly simple actions.

However, Wu Liuyi looked at the Black Widow who stopped after running close to him, and still gave a thumbs up sincerely and said: "Rosen, the Black Widow you made is really good, more obedient than my dog."

"Thank you for praising me like that," Rosen said.

"Rosen, can this Black Widow you made be equipped with a machine gun?" asked Shi Jin, who had just recovered from the shock.

"Of course." Rosen walked to Shi Jin and waved to Black Widow.

The Black Widow immediately left Wu Liuyi and walked to Rosen's side. It was obvious that he had more authority.

"Black Widow, open the weapons bay." Rosen said.

Click.

The covers on the Black Widow's head, chest, and abdomen opened up, revealing the weapon racks inside. He pointed to the extra space in the abdomen and said, "We can store a certain amount of ammunition here, and it can also be used to transport ammunition when we are on a mission."

The more Shi Jin looked at it, the brighter his eyes became. He said, "Let's take it to the company commander to have a look."

"Sergeant, the Black Widow has not been used in actual combat, so I can't say for sure whether it is effective or not. It would be a bit too hasty to show it to the company commander now," said Rosen.

"What do you mean?" Shi Jin asked.

"Didn't we say we were going to have a mountain camouflage training this afternoon?" Rosen said with a smile, "I'll bring Black Widow over and see how it works."

"It can even find people in disguise?" Shi Jin said in surprise.

"Of course." Rosen smiled and said, "The Black Widow is equipped with a far-infrared detector. As long as there is a heat source, it will find it accurately."

"Try it?" Shi Jin looked at Wu Liuyi.

"Let's give it a try." Wu Liuyi said.

"But I want to remind you that you must not mount any weapons. Shi Jin picked up the rubber crossbow and said, "Not even a crossbow."

"Okay." Rosen nodded with a smile.

"Rosen, try to beat the other classes to a pulp." Wu Liuyi looked like he was ready to watch the fun.

"That's a must." Rosen said.

Shi Jin looked at Wu Liuyi, then at Rosen, and couldn't help laughing.

So when he returned to the classroom, Rosen had a big camouflage backpack on his back.

Not only did he carry this backpack all the time when he was in class, he even did not put it down when he went to the mountains in the afternoon to conduct camouflage and counter-camouflage training and confrontation with other classes.

It was not until the other classes were camouflaged and Class 3 was responsible for finding flaws, seeing through the camouflage, and catching the tongue that Rosen took off the heavy camouflage backpack for the first time.

"Rosen, I've been wondering for the entire afternoon. What's in your backpack? It's not a secret weapon, is it?" Bai Tiejun asked curiously without waiting for him to open the backpack.

"Bai Tiejun, don't ask questions that you shouldn't ask. Have you forgotten the confidentiality rule?" Wu Liuyi shouted in a low voice.