After dispelling the idea of selling the equipment, Liu Fang continued to check, and soon, he saw a line of words written in red ink on another wooden box: "Down with Soviet revisionism!" Never bow to Su Ba! Long live Chairman Mao!! -- Revolutionary teenager Zhu Chenggong's question. Pen ~ Fun ~ Pavilion www.biquge.info"

"I'll just say how did the military equipment come here, it turned out that they were robbed by the Red Guards, but I don't know if this Zhu Chenggong was the intellectual youth who took care of the station back then? It depends on the situation, right? ”

Liu Fang glanced at it a few times, and then exited the computer room, the sky outside was already very dark, and he needed to block the air leakage of the machine station before it was completely dark.

It was next to a lake, and there was not even half a figure visible within a few miles of it, whether it was to keep warm or to ward off fear, Liu Fang felt that it was necessary for him to do so.

After a lot of effort, Liu Fang finally blocked all the holes, he opened the door and picked up some relatively dry dead branches, and came back, and lit a fire in the center of the house.

With the light of the fire, the darkness in the room was immediately dispelled, and the heat emitted by the fire made Liu Fang no longer feel cold, he stretched, yawned again, and it didn't take long for him to fall asleep against the edge of the bed.

I don't know how long it took, Liu Fang woke up from the cold, he opened his eyes and found that the fire had been extinguished, it was dark outside, because he was in the wilderness, Liu Fang didn't dare to go out to pick up branches, he shrunk his neck, buried his head between his legs, trying to use his own temperature to resist the cold.

After a while, Liu Fang couldn't stand it anymore, the weather was too cold, in order to keep warm, he had to stand up and keep stomping his feet in the room, as for why he didn't hide in the quilt, it was because the only two quilts were all wet with muddy water.

Liu Deping and his wife don't think about whether the muddy water on the ground will get things wet when they throw things, in their eyes, Liu Fang's nephew is not worthy of pity at all, who let this guy's father and his own brother treat themselves like that?

In order to save food, Liu Fang only ate half full every time he ate, and at this moment, he walked back and forth, which naturally accelerated the digestion of food, and within half an hour, he had a sense of hunger.

"You can't cook without water and firewood, it's dark outside...... Let's wait until dawn. ”

Liu Fang looked through the crack in the door panel outside, those longing black shadows hidden in the darkness, looked like demons from hell, and finally fear overcame hunger, making Liu Fang give up the idea of cooking.

In order to ward off the hunger, Liu Fang decided to use a distraction method, he picked up the book under the bed, lit the only kerosene lamp, and flipped through it under the light.

"It turns out that the radio receives the radio signal, and then restores it through demodulation, so that the sound can be heard, which is amazing!"

In the dim light, Liu Fang's eyes burst out with a shocked look, and he continued to read with strong curiosity.

"The essence of radio is electromagnetic waves, but it is only one of the frequency bands, and its upper frequency is 300 GHz, and there is no uniform specification for the lower frequency limit...... Forehead...... What is a gigahertz? ”

"The electromagnetic equation can be expressed in terms of partial differential equations, which are also known as wave equations...... What is the electromagnetic equation? What about partial differential equations? ”

"Electromagnetic Pulse...... What is this? ”

As he saw more and more content, Liu Fang became more and more confused, he didn't know much about many of the professional terms in the books, and the more he read it, the more obscure he felt.

Ten minutes later, Liu Fang put down the book in his hand and found the book "Radio Basic Technology", he felt that since the name of the book has two words of foundation, it is very likely that he will make a detailed explanation of radio, as long as he starts to learn from the basics, he can understand the more advanced content step by step.

By now, Liu Fang's interest has been completely stimulated, originally he wanted to transfer his hunger through reading, but with the accumulation of problems, Liu Fang has changed his original intention, he feels that he is idle and idle, anyway, he has already figured out the content in the textbook, there is no need to review at all, it is better to delve into what he is interested in.

On this cold spring night, in this abandoned pumping station in the middle of nowhere, a seven-year-old boy is hungry for knowledge and theories far beyond his age, and no one knows what this will mean.

Since coming into contact with radio-related knowledge, Liu Fang is like a different person, in addition to going to school and eating, he spends all his time on studying, because he is too addicted, Liu Fang even forgot to wash his face and brush his teeth, he likes this feeling very much, because it will make him forget loneliness and fear, and at the same time can forget the thoughts of his parents.

The good times didn't last long, and half a month later, the head teacher, Mr. Chen, called Liu Fang to the office.

At this moment, Liu Fang's eyes are red, his face is full of filth, his hair is messed up into a chicken nest, and he is wearing tattered clothes, anyone who sees him will think that he is a flower child who asks for food.

Teacher Chen covered his nose to block the rancid smell emanating from Liu Fang's body, and looked at this student with a strange look.

She didn't know why Liu Fang suddenly became like this, although this child's family was very poor and the clothes he wore were very shabby, but at least his personal hygiene was still very good, but somehow, in just half a month, why did he suddenly change drastically? Could it be...... It was his last words that were too intense, which stimulated him, and he ...... Did he really become a psychopath??

Teacher Chen thought of this, and suddenly felt a few times in his heart for no reason, although parents and schools have been very supportive of teachers to carry out strict education for students these years, but if the education is overdone, it will cause too much harm to the children, and the consequences will still be very serious.

Fortunately, Liu Fang's parents are gone, well, even if he really becomes a psychopath, no one will come to me for trouble, right?

After Teacher Chen comforted herself, her mood gradually relaxed, she slowed down her tone, and said softly: "Liu Fang, you ...... You okay? ”

Liu Fang thought that Mr. Chen had not given up correcting his thoughts, and wanted to criticize and educate himself again. Since being called into the office by Teacher Chen, his heart has not been calm, and when he heard Teacher Chen's question, Liu Fang whispered with some trepidation: "Report, report to Teacher...... I—I'm okay......"

It may be a preconceived relationship, the more Teacher Chen looks at it, the more he feels that Liu Fang has a mental problem, in order to cover up the mistakes he caused, Teacher Chen's tone is more calm and kind: "It's okay if you're fine, so what...... Why have you suddenly become so disclean? ”

After hesitating for a while, Mr. Chen finally got to the point.