"Squadron, squadron, this is the camp, please answer when you hear it, answer it when you hear it"

In the camp dozens of kilometers away, Blake kept calling with a communicator.

"How long have you been missing?" Li Ziming walked in with Wang Mumu from the ballast relief cabin.

"It's been three hours since they lost contact, and once they went deep into the cave, the signal didn't cover there," Blake said with a frown.

"Maybe the cave is too deep and they haven't come out yet?" Li Ziming speculated: "Will there be any discovery?" ”

"I have a bad feeling," Miyazaki said.

"There's never a good premonition from your mouth!" Blake said in disgust, "Can't you say something nice?" ”

"Why don't you wait," Li Ziming suggested, as a former soldier, he knows very well what the consequences of impulsive decisions will be, and what is needed at this time is to be calm.

Blake didn't care about the advice of civilians like Li Ziming, he looked at Miyazaki River beside him and said, "I'm going to take a look, do you want to go"

Miyazaki looked directly at the screen and did not answer Blake.

"Are you afraid of death?" Seeing that Miyazaki River didn't respond to himself, Blake was a little annoyed and angry, "You coward!" ”

"Second Lieutenant, calm down, no news is good news now," Li Ziming advised.

"You know what! My comrade-in-arms is unknown if he is alive or dead, I can't just wait here" After speaking, he looked at Miyazaki River, "If you don't dare to go, you can wait here" After speaking, he walked towards the ballast release chamber.

"Z-z-" The sound of an electric current was heard in the communicator, apparently the radar had detected an electromagnetic signal.

Excited, Blake hurriedly rushed to the instrument to look for this extremely unstable electromagnetic wave signal, and Miyazaki Chuan, Li Ziming and others also surrounded him.

"Here's the Tiangong...... Tiangong ...... Please answer if you receive it...... Roger that...... Answer"

A few short words shook everyone's hearts, just like a long drought and a rainstorm, and the brief signal made them see hope and see the light.

"Can you calculate the distance of the Tiangong?" The first to calm down was Li Ziming.

Blake shook his head, "This band is emitted with a high-power transmitter"

"Not from the laser array?" Wang Mumu said strangely.

"You're not a fool, are you?" Blake looked at Wang Mumu as if he was looking at a fool, "With such a rudimentary equipment as ours, can we receive the message from the laser array?" ”

Li Ziming patted Wang Mumu, who was aggrieved, and said, "Don't talk on this occasion in the future."

"There is a super-high-power electromagnetic wave transmitter on the Tiangong, which is mainly used for large-scale calls, and the Tiangong must transmit signals at maximum power in order to call us, and the signals we receive are extremely unstable, obviously Tiangong is still quite far away from us" said, Blake input the instructions into the system, "I can only let the system calculate, how long will it take to calculate such a huge algorithm manually."

"Will you count?" Miyazaki River Road.

“……”

"Uh...... Shouldn't we think about how to reply to the Tiangong? "What Li Ziming is most afraid of is that the air is suddenly quiet......

Blake: (ーー; )

Miyazaki River: (ーー; )

Li Ziming:(; ¬＿¬)

Wang Mumu: (O_O)?

Just after everyone was silent for a minute, Mu finally couldn't help but look confused, and weakly raised his little hand, "Is it difficult?" He replied that we were all right, and that they should come and pick us up! ”

Crowd: (╯°Д°)╯(┻━┻

Wang Mumu: (X_X) Pawn

Li Ziming looked at the wood that fainted on the ground and fell into deep thought: "What method can we use to convey the information here?" Even if it's just to prove that we're alive."

Everyone knows very well that with the current equipment and instruments in the camp, there is no ultra-long-distance signal transmission, and even to achieve the signal coverage of Tokta, it is necessary to use seven unmanned fighters in outer space for signal transfer.

In order to ensure the coverage of communication signals and obtain clear call signals, it is necessary to set up at least 6 satellite orbits to meet the basic communication needs.

"Wait, do you know how the laser array works?" Li Ziming seemed to have thought of something, but he was not sure if his guess would come true.

"Are you saying that according to the principle of laser arrays, we use the existing electromagnetic signal transmitters to form an electromagnetic array?" Blake was the first to react.

Laser array is the abbreviation of laser diode array, laser diode array is an array of high-power lasers composed of multiple laser diodes. For semiconductor lasers (laser diodes) for engineering applications, the emission power of a single die is far from sufficient, and in order to obtain a large output power, many individual semiconductor lasers are combined to form a laser array.

Although the research background of laser arrays is as early as the beginning of the 21st century, after more than 100 years of scientific research breakthroughs, the transmission power and energy loss of laser arrays have been greatly improved.

"Feasible," Miyazaki said lightly.

"Will you?" Blake looked at Li Ziming with a hopeful face, and the little stars in his eyes were unusually bright.

"I ...... It's not this major" Li Ziming was a little embarrassed by Blake's eyes, "I'm just guessing, and I don't know how to do it."

After 5 seconds of silence, Blake and Li Ziming tacitly looked at Miyazaki River, expecting Miyazaki River to give them a satisfactory answer.

Miyazaki River: ( ̄. ̄)

"None of us are in this profession, so let's talk about yo-yo!" Blake angrily threw the cup in his hand on the table.

"I remember that Mu Tou understood electromagnetic wave transmission, and he was my co-pilot, responsible for radio communications and electronic equipment maintenance," Li Ziming said, picking at his head.

"Others, call him over!" It was as if Blake had found the last straw to save his life.

Li Ziming: "......"

Blake: "......"

Miyazaki River: "......"

Wang Mumu: (X_X)

"Poof" Blake took a large mouthful of water and sprayed it at the wood's face.

"Ahh

"Wood, you know electromagnetic wave communication transmission," Li Ziming was the first to break the silence.

"I will, wasn't I responsible for the debugging and maintenance of electronic instruments on the tractor before" Wood looked at Brother Ming suspiciously, "What's wrong?" ”

"Now we have to find a way to use the existing equipment and instruments to transmit the information that we are still alive to the distant Tiangong, do you have a way?" After Li Ziming finished speaking, Blake and Miyazaki both set their eyes on the wood, and the threat in their eyes was as if as long as the wood answered a no, everyone would knock him out again.

"Mobilize the 7 unmanned fighters in outer space and Mingge's tractors, arrange them in a certain shape, connect them in series or in parallel to form a matrix, adjust to the maximum power to form an array of high-power amplifiers, and then use the camp's transmitter to launch our edited content package, which can be transmitted to Tiangong after the amplification of the matrix, but it can't be compared with laser transmission in time."

After the wood threw out the principle and implementation method in one go, everyone was already dumbfounded, and the three of them lowered their heads after looking at each other, after all, all three of them were involved in the matter of stuning the wood.

"How long does it take to complete the transfer?" Blake asked, his tone much softer than before, perhaps with a slight apology in his heart.

"It takes an hour to mobilize unmanned fighters and tractors to form an array, because the unification of the electromagnetic frequency band requires repeated debugging, and the tractor needs to be piloted by Brother Ming," Wang Mumu said, "Give me an hour and a half, and I will definitely get it proper for you."

"Wood, you can make your debut in the C position!" After speaking, Li Ziming walked towards the ballast release chamber, and he had to go to drive the tractor.

……

Just as Blake and the others were debugging the electromagnetic wave array in the camp, a desperate fight took place at the bottom of the cave dozens of kilometers away.

Hours of fighting made Qi Jingyu and Mina's physical strength unsustainable, and Gu Yiyi on the side saw it in his eyes, and there was nothing else to do but be anxious.

Qi Jingyu cut off the head of a soul devouring beast and dodged back to Mina's side, he picked up Mina, who had fallen to the ground, and slowly moved backwards, leaving behind the corpse of the soul devouring beast.

"That beast just bit the connector on my leg," Mina gasped and moved backwards as Qi Jingyu tugged.

"How so?" Qi Jingyu held the battle knife in his hand and pointed at the surrounding spirit devouring beasts to show shock.

"The mecha system has started to get out of order, it should be that the energy is too low to maintain the high-consumption battle mode," Mina said with difficulty, and the only solution at the moment is to turn off the battle mode to save too low energy.

"If I had known that we should have stayed in the camp like this" Qi Jingyu knew that they wouldn't last long after seeing Mina remove the battle mode, because his mecha also lit up a warning light with too low energy.

"Be careful!"

Before Gu Yiyi's words were finished, the spirit devouring beast on his side rushed towards Qi Jingyu, and one person and one beast were entangled and rolled down several meters away.

"Jing Yu!" Mina and Gu Yiyi's exclamations didn't end.

The surrounding spirit devouring beasts found the void and rushed up to Mina on the ground, tearing and biting unscrupulously.

"Jing Yu, save Mina!" Gu Yiyi shouted hysterically on the side, she watched Mina being pressed to the ground by the swarming spirit devouring beasts in front of her and wantonly biting, her dark blue pupils were covered with bloodshots, but she was pressed by the boulder and unable to move.

Gu Yiyi took off her claw sleeve in a hurry and threw it fiercely in the direction of Mina, and with great strength, several spirit devouring beasts were injured by her claw sleeve and rolled aside.

Her actions did not deter the Spirit Eaters, but more Spirit Eaters flooded Mina's mech.

"Get out of here!" Qi Jingyu threw out the war knife in his hand with all his might, and the war knife spun in the air at a rapid speed and flew towards the spirit devouring beast on Mina's body.

The battle knife flew by, and the spirit devouring beast on Mina's body was instantly slashed, leaving a passage paved with the corpse of the spirit devouring beast between Qi Jingyu and Mina.

Qi Jingyu rushed to Mina's side, and after pulling Mina, he tried to turn on the thruster and fly into the air, but as soon as the two reached the air, they fell down due to energy exhaustion.

The two stumbled and drew several meters on the ground, Qi Jingyu opened the mecha before he could get up from the ground, and Qi Jingyu jumped out from behind the body with difficulty.

He stumbled to Mina's side and tried to open Mina's mecha, and after breaking away from the mecha's constant temperature protection, he still felt the heat of the outside temperature despite the heat insulation of the combat suit.

"Hurry up, we have to leave quickly," Qi Jingyu said after dragging Mina, who had collapsed, out of the mecha.

Mina shook off Qi Jingyu's hand with difficulty, and stumbled towards the rock where Gu Yiyi was.

"Let's go, my mecha valve has been damaged and locked," Gu Yiyi looked sideways at Mina and Qi Jingyu who were running towards this side and shouted, "Hurry up!" ”

After Mina heard Gu Yiyi's words, she fell to her knees in despair.

Qi Jingyu picked up Mina's body and begged, "Please, let's go, don't let everyone's sacrifice be in vain!" ”

"I can't walk anymore, I'll only be a drag on you" Mina stroked Qi Jingyu's helmet with her hand, looking at Qi Jingyu's face full of tears in the helmet, trying to wipe away tears for him, but unfortunately she couldn't touch his face "I'm not leaving".

"Please"

Qi Jingyu looked at the approaching Spirit Devouring Beast, he stood up as if he had made up his mind, and took out a dagger from his waist and placed it across his chest.

"I said that I would be with you whether it was heaven or hell"