On the third day, it happened to be a weekend.

"Come on, come on, you're welcome, please come in!"

Chio stood on the slope at the entrance of the courtyard and greeted everyone warmly.

Jiang Chanji, Zixuan, Chen Yiyi, Xiaosui, Aurora, Miao and No. 33 got off one after another.

Behind Qianyang is a vast courtyard, different from Mei Yibai's European-style courtyard, this courtyard of Qianyang's house is Chinese, the high courtyard wall and the magnificent gatehouse are all declaring the owner's luxury, the glazed tiles of the gatehouse reflect the sun, and the copper nails on the gate are slightly dim, full of a sense of age.

"Wow! that's amazing!" Zixuan smacked her tongue.

"It's normal~It's not a big deal~" Mio said loudly, and was immediately grabbed by Jiang Chanji by the back collar.

"Senior Sister Meow, even if it's average, this is not the reason why you want to jump on other people's walls!" Jiang Chanji was too familiar with her movements, as Lu Weijing pointed out, Miao was too successful in beastization, and even his brain was partially beastified.

"What...... I didn't want to jump against the wall! I just thought it would be nice to lie on the glazed tiles and bask in the sun......" Mio argued, "haven't you ever seen a beautiful woman basking on the beach?"

"Come in, everybody, don't stand outside talking, you're going to get a tan. Chio beckoned everyone to go inside.

Today, Qianyang entertained everyone to her own home to play, and by the way, she also introduced her new friends to her grandfather, who would definitely be happy to see that she had made so many friends.

Jiang Chanji was happy to accompany them, because it was expected that there would be a sumptuous meal waiting for them.

A group of people entered the courtyard through the open gate.

The courtyard is full of verdant greenery, bamboo shadows, small bridges and flowing water, winding paths, the hustle and bustle of the outside world is isolated, and entering the courtyard is like entering another world.

The courtyard is very quiet, the air is fresh and pleasant, with the fragrance of moist earth, and a cobblestone path leads from the doorway into the courtyard.

Qianyang led everyone along the path, and after walking for a while, the bamboo forest was about a minute, and suddenly opened up in front of them, and a small artificial lake appeared in front of them.

Colorful koi fish swim in groups in the lake, and when they see someone coming, they come to the surface to spit bubbles and beg for food.

Jiang Chanji grabbed Mio's back collar again, so as not to fish out other people's fish.

On the shore of the lake is a promenade that extends into the center of the lake, and an old man in a wheelchair waits in the gazebo at the end of the promenade.

"That's my grandfather!" Qian Yang pointed in the direction of the old man from afar, and shouted, "Grandpa!

Everyone followed Qianyang to the old man, Jiang Chanji felt that the old man's appearance seemed to be a little familiar, but he couldn't remember where he had seen it for a while.

However, Zixuan took a breath and whispered, "It's actually him......"

"Who? do you know?" Jiang Chanji asked in a low voice.

"It should have been a well-known business star a few decades ago, and I saw him occasionally on TV a few years ago, but I didn't expect it to be Qianyang's grandfather, but he aged a little fast......," Zixuan whispered.

"You know that, you weren't born decades ago, were you?" he wondered.

Zixuan rolled her eyes, "If you choose to study civil and commercial law, the teacher will talk about the classic business war cases in the past, and he is one of them." ”

"Oh......"

The old man did have a sick face, but his mental state was not bad, like the recovery period of a serious illness, and he happily listened to Qianyang introduce everyone to him one by one.

When Zixuan was introduced, Qianyang deliberately emphasized that Zixuan was very smart, and the old man always liked smart children, and asked Zixuan long and short questions, and was even more amazed to learn that Zixuan was the best among the first year of high school at a young age.

"By the way, grandpa, it's Sister Zixuan who pointed out that my real ability is not magnetism, but electricity, don't always let me show my ability to guests in the future, it's a shame!" Qianyang took Grandpa's hand and said coquettishly.

"What's the shame of magnetism or electricity, you are grandpa's favorite baby granddaughter!"

Everyone can see that the relationship between the grandfather and grandson is indeed very good, the old man's love is overflowing, he actually doesn't care what Qianyang's ability is, as long as it is Qianyang's, he likes it all.

At this time, Zixuan's mobile phone suddenly rang.

"Sorry, I took the phone. ”

Zixuan ran to the side to answer the phone, and it turned out that it was Teacher Wang Yefei who informed her that the equipment she customized had been completed and had been shipped to the school, and asked her when she would assemble them and experiment again.

Zixuan told Qianyang the content of the phone call and asked Qianyang's opinion, after all, the experiment would be meaningless without Qianyang.

Qianyang thought about it and asked if she could do it here, just so that grandpa could also take a look.

Zixuan felt that it didn't matter, so she asked Teacher Wang Yefei to trouble and send the equipment here.

After about an hour, the girls were happily feeding the koi by the lake, Wang Yefei arrived, and Jiang Chanji went out to help her bring in a big box.

"I'm sorry, Mr. Wang, because my willfulness has tired you. Chio apologized.

"It's okay, I want to watch your experiments, and besides, it's the weekend, so it's not class time. Wang Yefei waved his hand generously.

Qianyang introduced Wang Yefei to her grandfather again, and while the two were greeting, Zixuan opened the box in the gazebo, took out all the equipment inside, and placed them neatly one by one, checking whether the size and weight were as expected.

Jiang Chanji squatted to the side curiously, these dazzling pieces of equipment looked very advanced, and he couldn't guess what they were for.

"Come on, Qianyang, try this Shen is not sinking. Zixuan greeted.

Qianyang trotted over, and the other girls also ended their play and came over to watch.

What Zixuan pointed to was a long cylindrical metal tube, about 80 centimeters in length and about 10 centimeters in diameter, made of silver-gray titanium alloy, with a buckle at each end, and a strap connecting the two buckles.

"It's ...... Memorized?" asked Chio.

"Yes, try the weight on your back. Zixuan said.

Chio carried the metal tube behind her back and adjusted the length of the strap slightly, looking like a painting tube that art students often carry behind her back to hold drawing paper.

"It's a bit heavy, but it's okay. Qianyang said.

"That's fine, but not necessarily once you put the parts in. Zixuan said.

The old man looked at the equipment and parts on the ground, and gradually showed surprise, "This ...... This gold-plated concave total mirror, inner and outer electrodes, air reservoir, return pipe, folding mirror, cooling water circulation system...... Are you going to make a CO2 laser cannon?"

Qianyang's grandfather actually broke Zixuan's intentions, which made Zixuan very surprised, and what was even more surprising was the other people present, everyone didn't expect Zixuan to be such an earth-shattering weapon when she made a move!

"How did you recognize that?" Zixuan asked curiously, as well as admitting that what she was going to make was indeed a CO2 laser cannon.

The old man's wrinkled face and skin have lost their elasticity due to the loss of most of the moisture and collagen they had when they were younger. He has experienced several years of kidney failure torture, although Mei Yibai has been renewed, but the illness is like a mountain, the illness is like a thread, and the vitality in his body seems to be drained of the wisps, no longer the courage of the past, and so he, at this time, his face suddenly glowed with a strange look, and said proudly: "Because I have seen similar things, although the shape is different, the size is even different, but I will not forget when I see it, if you want to succeed in the business field, you don't rely on eating and drinking......

Zixuan recalled slightly, thinking that in his resume, among the dozens of companies under the business group he was in charge of, there was a company that had close business cooperation with the military, and he thought that the army had tried to produce similar things, but he had not heard of the following, probably because he encountered technical difficulties and stopped.

"What?Zixuan, do you really want to use these equipment to make laser cannons?" Jiang Chanji asked in disbelief, no matter how you say it, it's too sci-fi.

"The principle of the carbon dioxide laser cannon is very simple, the body is also very simple, people with a little hands-on ability can buy materials online DIY, the complexity is the power supply, the power supply capacity limits the application of the laser cannon, and more than 90% of the weight and volume of the weapon-grade carbon dioxide laser cannon is wasted on the battery, power supply system and transformer. Zixuan said, turning her head to look at Qianyang, "But Senior Sister Qianyang is a natural mobile power supply that can output extremely high voltage, which solves the biggest problem of laser cannon use in actual combat." ”

"And Senior Sister Xiaosui and Senior Sister Aurora, after Senior Sister Qianyang launches the laser, by accelerating the water circulation and strong refrigeration, they can help the laser cannon cool down quickly, so as to shorten the interval between the next laser. ”

"If Senior Sister Koho and Senior Sister Aurora are busy dealing with other enemies and can't help by Senpai's side, it doesn't matter much, it's just that it will take a few minutes or ten minutes before the second laser can be fired, otherwise the laser cannon will be overheated and the internal optical path will be deformed. If necessary, you can also ask Aurora to coagulate carbon dioxide to supplement the laser cannon...... Is it ammunition?"

Including Teacher Wang Yefei, everyone listened to Zixuan's eloquent talk, and they were all stupid.

This is almost the ultimate point-kill type long-range weapon, Jiang Chanji's Screaming Bone Bow and Rafay's Oxhorn Bow are all in the face of the CO2 laser cannon.

Of course, just as there is no perfect ability, the CO2 laser cannon is not perfect, it requires a powerful power supply, it needs a strong cooling device, these additional devices limit the use of the laser cannon, but the combined abilities of Qianyang, Koho and Aurora can greatly simplify the structure of the laser cannon, saving the power supply, Batteries and transformers, streamlined cooling systems, almost only the body of the laser cannon, and the use of new materials at any cost have greatly reduced the size and weight of the laser cannon, otherwise it would not have practical value.

In fact, even the cooling water circulation system could be omitted, but considering that Qianyang may be alone, it is impossible to be with Aurora and Spike all the time, so it is still kept at a minimum.

Due to the rush of time, other parts of the laser cannon can be temporarily customized, but the carbon dioxide laser tube of the core component can only be customized with ready-made industrial-grade metal laser tubes, and it is too late to customize.

Zixuan saw that everyone stopped talking, so she began to assemble as if no one was around, and assembled the equipment parts in a titanium alloy cylinder step by step, and then checked it again, and installed a small laser emitter in a reserved position on the cylinder shell, which is similar to a laser pointer for a few dollars, which is used for aiming.

Zixuan turned on the laser sight, and a small red dot appeared on the ground where the sight was facing.

"Okay, it should be almost, Qianyang, can you try it?" Zixuan introduced, "The use method is very simple, whether you are holding the laser cannon, or carrying it on your shoulder, or where you set it up, you can do it, just remember that where the red dot falls, where is the target of the laser launch, don't use it on people easily." ”

There is also a grip on the side of the cylinder for easy grip, and this grip is made of iron-cobalt alloy and is connected to the electrodes inside the laser cannon. The grip is foldable and can be folded down when not in use to avoid getting in the way.

There is no such thing as a trigger, because as long as Qianyang has the ability to activate, the electricity generated by the iron-cobalt metal combination will go straight to the inside of the laser cannon, and ordinary people holding this thing in their hands are tantamount to scrap metal.

Qianyang is not a boy who likes to dance with knives and guns since he was a child, he has no interest in weapons, and he is a little afraid, and suddenly let her operate this laser cannon that she has never seen and no one has ever used, she was stunned and did not dare to step forward.

"Can I give it a try?"

Teacher Wang Yefei stood up.

The way to use the abilities of the Electric-Transcendent has always been the biggest problem for them, and they have thought of many ways, most of which are relatively simple, such as increasing the hit rate of the arc, but no one has really thought of using their own electrical energy to manipulate laser weapons.

If she can also use this laser cannon, even if it can only be fired once in ten minutes, it will be a great advantage.

"Yes. Zixuan nodded.

Wang Yefei picked up the laser cannon and tried several ways to hold it, due to the girl's small strength, it was very uncomfortable to hold it in her hand or under her armpit, and finally she chose to carry it on her shoulder.

Everyone hurriedly flashed to her side, for fear that she, who was not familiar with the operation, would accidentally trigger the laser and make a hole in herself.

"What do you try as a target?" she herself was careful to avoid aiming the laser cannon at the front of the person.

The front of the laser cannon is protective glass, the glass has two layers, one is the inner layer, the other is the outer layer, the outer layer is a fully enclosed high-strength and high-transmittance special glass to prevent water and ash, and a round hole is left in the center of the inner glass, and the laser is shot out of the round hole.

"What about that tree, or that stone?" the old man pointed to a rockery facing the artificial lake, next to which were weeping willows and large pieces of bluestone.

"If you damage something in your house, the school will compensate you according to the price. Wang Yefei aimed the laser cannon at the willow tree, and the red-dot laser shot from the sight had already landed on the trunk.