"Yes! Yes! Infrasonic ejector, shoot sound waves between one hertz and twenty hertz, good directionality, inaudible to the human ear, as long as it is not directly in front of the ejector, it will not cause damage such as visceral bleeding, infrasonic needs power amplifier, frequency response range suitable for the speaker, I will write a set of frequency conversion spectrum, let the audio switch back and forth in different frequencies to ensure that there is always a frequency that can correspond to the rodent or other ghost things outside, unless those things can rush through the infrasonic area in a loop time, Otherwise, they will either turn around and run away or bleed to death. ”

Infrasound? Hertz? Power amplifier? Audio? Everyone present was stunned, only Wang Chen roughly understood what Dai Jian meant, because car audio modification is also a big entry for auto repair shops, he is not unfamiliar with audio, slightly digested Dai Jian's words for a few seconds, and asked: "Can civilian equipment be made?" ”

"I, I don't know much about mice, and it's really not easy for civilian equipment to make infrasound, I can try it if I have a suitable horn, and by the way, I can ask my superiors for help."

"What about coverage?"

"Then it depends on the horn first."

Wang Chen didn't continue to ask questions, but turned his gaze to Shen Dongyun.

As the only electrician stationed on the peninsula, Shen Dongyun does not need to perform combat tasks, and only maintains the existing electrical equipment on weekdays, pulls some wires according to Ren Wanrong's instructions, and the work is not heavy, so he eats well and sleeps well, and in just a few days, the Chinese face has a tendency to show a round face, seeing Wang Chen's gaze projected over, he did not hesitate, nodded and said: "Infrasonic or something, we don't know, but power amplifiers, speakers, these things, it is not difficult to install, although there is no one in the station, just find a kTV, It's no problem to dismantle more than a dozen sets, according to the existing buildings in the station and the area distance on the side of the stone bridge...... If you want to have full coverage, the total power consumption can be not small, and if you turn them on, other high-power appliances must be used in turn. ”

"That's it, tonight, let's first follow Brother Ren's arrangement, prepare the rat trapping tools and everything, keep a night watch, and arrange for someone to get the speaker at dawn tomorrow, wait for the speaker to come back, and use Dai Jian's method to do an experiment to see if it works, let's install it all over the place, it doesn't work, and then find a way."

Fortunately, the station is surrounded by water on three sides, and the water flooding method is forced out of the big fat body to prove that it can't swim, so the safest way at present is to lay enough obstacles and Led lights at the cement bridgehead, at least to ensure that there are no small things such as cylinder rats mixed in at night, in addition, from the climatic point of view, it is expected that there will be about a month, the water surface around the station will freeze, and the peninsula station wants to put an end to similar crises, the stupidest and most secure way, Naturally, it is enough to collect all kinds of steel nets, iron nets, and plastic nets, regardless of the number of holes in various nets, first fix a few circles around the residence, and then go around the station, with dogs and manual patrols, it should be foolproof.

Since the discussion was almost over, Wang Chen was about to get up, when a noisy background voice suddenly came from the walkie-talkie next to him, followed by an unfamiliar voice, "Please answer when you hear it from the Peninsula Station...... Peninsula station hears please answer...... This is Rescue 107, here is Rescue 107, ready to land at you, please indicate where to land, please indicate where to land. ”

Yoh? The sun came out from the west, the establishment of the peninsula station to the present, this is still the first time that a helicopter landed, even the special service with civilians, all threw down their jobs and rushed out, Fang Qiang was born in the 6th flight, choosing a landing point is as easy as eating and drinking, the location of the ignition pile did not hesitate for half a second, plus the handset is connected to the communication equipment on the armored vehicle, theoretically the maximum transfer range is hundreds of kilometers, so when the helicopter lands, it is quite smooth.

Before the propeller completely stopped, the helicopter door opened, and a heavily armed officer jumped down from inside, carrying Liang Maoyi and walking quickly to Fang Qiang, saluting first and then shaking hands, the language was concise and clear: "Rescue team Zhu Jie, you are Fang Qiang, the captain of the 08 squad?" ”

"I'm Fang Qiang!" Fang Qiang changed his usual obscene uncle, his waist was straight, his ugly face was a little solemn and strong, and he shook hands with Zhu Jie after returning the salute.

Zhu Jie is obviously a capable person, he didn't talk nonsense, and said like a cannon: "The superiors attach great importance to mutant creatures, this time let's come over to pick up the captain to go to the headquarters, the big leader needs to interview you, we have to bring the survivors who survived the parasitism of the mutant creatures, as well as the specimens of mutated creatures." In addition, two infrasonic generators were specially approved for the team as a garrison defense, which is a receipt form, which is confirmed by fingerprints. ”

Fang Qiang listened to the first half, but there was no reaction at all in the second half, what is a big leader to meet? Don't? No way?! I'm just a nominal captain, okay?! Even the matter of catching mutant creatures was done by Wang Chen, and when he really saw the big leader, he didn't know what to say!

Seeing that Fang Qiang didn't reply, Wang Chen, who was standing next to him, hurriedly patted Fang Qiang's shoulder, took the tablet and said politely: "I'm Vice Captain Wang Chen, can I sign for it?" ”

"Oh, of course." Zhu Jie didn't care about Fang Qiang's performance, put away the tablet that had finished pressing his fingerprint, and continued: "Is there a person named Chen Chong in the station?" His father wanted him to go back to headquarters with us on this flight. ”

The life of the second generation of Nima officials is really valuable...... Wang Chenqiang resisted the urge to roll his eyes and disdain, and just wanted to turn around and call Chen Chong, but he was unexpectedly dragged by Fang Qiang, who had come back to his senses, and pulled him to Fang Qiang's side like a crutch, and heard Fang Qiang say: "Really go to see the big leader?" Really going? How big is it? ”

I said, brother, what about you, can you stay until now when you see a big leader?! Wang Chen thought so, but Zhu Jie's mouth was so hung that he also scared him.

"Prime Minister."

Wang Chen's situation is a standard insight and boldness, commonly known as stupid and bold, his knowledge in this area is far less than Fang Qiang, he didn't think about it at all, what kind of leader needs to send a helicopter to pick up people? If it's a peaceful era, that's right, any two people can send a special plane to pick up people, as long as people are willing to burn oil, now? The last days, my brother! There are many dead people everywhere, few living people can maintain aviation equipment, and it is even more rare in the last days! Do you really think that medium and long-range aircraft are big turnips, grown in the ground, and a big root is planed? There are more than 100 registered stations in the country, well, the news just updated says that the total number of registered stations has now exceeded 500, in short, they are all stations recognized by the government, can you call a support to give you an airdrop?! Specially descended a helicopter to pick it up, obviously only those who sat on the top of the chairs could do it, I didn't see what Chen Chong said, his father had real power and provincial and ministerial-level cadres could send a helicopter over, but the result was just a helicopter to go!

I thought that this news was already exciting enough, but within two minutes, Wang Chen received even more exciting news.

Chen Chong refused to get on the plane.