Li Yongsheng heard some rumors from the book club, but he didn't care at all, in fact, when he was in the fairy world, he was a more assertive person.

The rest of his time now, in addition to doing a library inspection, is trying to build a sound amplifier station - on Earth, this thing is called a radio station.

The Xuanqing plane has a device for transmitting information wirelessly, called the communication stone, which is a disposable item, which appears in pairs, writes the information on one of them and activates it, and the other piece can be received, write a few words on it, and then complete the mission.

It's not expensive, but it's not cheap either, and most of the time, public news is delivered through newspapers.

That's right, the Xuanqing plane already has a newspaper, and there are more than one, some are official and some are private.

However, newspapers do not sell very well, many people are illiterate, and literate people may not buy newspapers - wait for other houses to read them, and borrow them to read?

The newspapers here do not have very high requirements for real-time performance, but have almost harsh requirements for the authenticity of the event.

Newspapers also don't emphasize entertainment, there are too many illiterate people, watching plays and listening to stories are all good entertainment, why buy newspapers?

Li Yongsheng also had no intention of setting up a newspaper office -- he didn't have the money to do it, so he wondered if he should get a radio station.

He started a radio station, of course, to find Yongxin conveniently, the information transmission here is too primitive, there is no effective means of searching, he really doesn't know how long it will take.

There are also radio stations in the fairy world, but people call them audio amplifiers, and the principle is not quite the same as the principle of the earth.

Li Yongsheng, who is from the earth, is very clear about the principle of the radio, and the sound amplifier station of the fairy world also needs some means of the fairy world, and the best choice is the earth model.

Although Li Yongsheng has a little money recently, he can't waste it casually, so he is cautious about this experiment.

On this day, he finally made a radio station, and then made two more radios, intending to test them at a relatively long distance, and after doing this, he was destitute again.

He would definitely not be able to do this kind of test alone, so he found Jing Junhong and asked the instructor to help provide manpower.

As soon as Jing Jiaoyu heard his introduction, his heart fluttered, if he could really achieve that kind of effect, it would definitely attract the attention of the military -- what does accurate and timely information mean in the rapidly changing battlefield?

Jing Junhong volunteered to guard the radio station, and coordinated three inner students, plus Li Yongsheng, and the four seminarians in groups of twos and twos, each group holding a radio, went directly out of the seminary and ran into the distance.

It is said that this is a matter of the outer house, and the inner student should not be allowed to intervene, but after the first test of the effect of the radio, Jing Jiaoyu immediately decided to invite two good teachers to witness this great moment together.

This experiment will not fail, now it is only the distance of transmission that needs to be tested.

In a group with Li Yongsheng, it was a guy named Yue Kai, the two of them carried a large square box, walked all the way, ran out for more than ten miles, Li Yongsheng shouted, "Stop." ”

Yue Kai stopped and looked at him curiously, only to see that the outer student put his hand on the large square box and output aura, and then the square box sounded a rustling sound.

Output a long burst of aura, it was always rustling, Li Yongsheng frowned, and twisted the round button slightly.

This primitive radio is not frequent, and Li Yongsheng does not think that there is a need for frequencing -- it is a radio station that can be tuned when it is full, and how expensive it is to make it available.

However, if you don't do frequency modulation, you still have to have fine-tuning.

Soon, in the midst of the rustle, a man's voice was heard, intermittently, "They...... Yes...... Two or three miles, right?"

"Sect Gong Teaching?" Although his voice was very distorted, Yue Kai could still hear it, it was his own teachings that spoke, and he couldn't help but shout, "It's not just two or three miles, it's more than twelve or thirteen miles." ”

"The aura they output is unstable," Li Yongsheng is still very familiar with the equipment he invented, "but this is normal, let's just bury our heads and walk quickly, they have to talk while inputting the aura." ”

Yue Kai was stunned for a moment, then reacted, and then pointed to the huge radio, "This thing...... Isn't it a great way to consume aura?"

"It's more powerful now, and if it's smaller in the future, maybe it won't be so powerful," Li Yongsheng hesitated, not very confident to speak.

"Come, I'll carry it," Yue Kai's interest came, and he continued to walk with the radio, while pressing the radio with his hand to input the aura, and while walking, he listened to the conversation of the three teachings on the radio.

Li Yongsheng couldn't help but think of when he was in the earth realm, those old men who were exercising in the park in the morning, didn't they just have a radio in their hands?

However, the radio in Senior Yue's hand is slightly larger, with a look of thirty or forty pounds.

After walking for more than a mile, Yue Kai grinned and spoke, "This is indeed very spiritual...... Can't it be any other way?"

"It's okay to use electricity," Li Yongsheng smiled, "but it's not realistic, right?"

The people of the Xuanqing plane have not yet learned to generate electricity, and when they talk about electricity, it is the thunder between heaven and earth, but the people of this plane also admit that thunder and lightning contain extremely violent energy.

Yue Kai would be mistaken, he sighed helplessly, "How do I feel, I have become a thunderbolt." ”

"It's nothing more than a little aura," Li Yongsheng smiled disappreciatively, "It is said that someone can still use love to generate electricity." ”

This test has been extended to a place of about thirty-five miles, not that it cannot be collected, but that both groups of people are exhausted, and the time is not early, and if they don't go back, they may not be able to rush back to the seminary.

When I returned to the seminary, the three priests had already prepared their meals and had eaten and drunk with the four seminarians, and today's test went well—in fact, it was really rewarding to be able to deliver messages to people thirty-five miles away, even one-to-many.

"I'll get a few horses tomorrow," Gong Jiaoyu looked excited, "I always have to measure this data solidly, Xiao Li, do you think a hundred miles can be guaranteed?"

"If the radio is set up a little higher, a hundred miles is not a problem," Li Yongsheng is relatively clear about this.

The three oracles exchanged glances and said in unison, "Then go to the Stargazing Tower!"

After eating and drinking for a while, Gong Jiaoyu remembered something and glanced sideways at Li Yongsheng, "I see what you mean, it seems that you want to get a newspaper that you can listen to?"

Li Yongsheng smiled and shook his head, "Of course, it is given priority to the military and civilian markets, and there is not much demand now." ”

Gong Jiaoyu hesitated for a moment, and finally mentioned, "Xiao Li, the rules and regulations are good for supplying the military, you didn't expect this cost, even the newspaper lost money, you will only lose more...... Radios aren't cheap, are they?"

Li Yongsheng smiled and nodded, "Thank you Gong for reminding me, but this radio really doesn't cost much." ”

It doesn't take much? Gong Jiaoyu glanced at him, and said in his heart that this kid really dares to brag.

Another teacher, surnamed Xiong, finally spoke, "It doesn't take much...... How much is that?"

Not to mention the teachings in the seminary, most of them are dead-headed, and there is often no room for questioning.

"In terms of batches, it can be outsourced, which is about five silver dollars," Li Yongsheng calculated and gave an answer, "No matter how large the amount is, it can be controlled to about four silver dollars, and a lot of work can be done by beginners." ”

The level of education in the Xuanqing plane is uneven, and the difference in labor costs is also relatively large, and the monthly salary of newly graduated undergraduate students can basically reach one silver dollar, and if they do not develop within the system, the monthly salary will be even higher -- such talents are rushed to be sought by society.

Of course, the initial salary of undergraduate students who enter the system is a little lower, but if they develop step by step, they will have the opportunity to raise their salary, not to mention benefits such as in-kind and land, and when they have a certain official position and real power, they will also have gray income.

But it is good for a beginner, that is, a primary school graduate, to find a job with a salary of 500 yuan a month.

Of course, those who have a skill are not included.

If those who have never entered a seminary and are illiterate, they can find a job with a monthly salary of four or five hundred yuan by selling their strength, but that is eating youth, roughly speaking, that is, a monthly salary of three or four hundred yuan.

For a family of six, there must be at least two such laborers, and some elderly people and children can earn a small amount of money to supplement the family in order to maintain a relatively stable life.

The radio is a delicate object, but the primary processing can be done by some low-level labor.

"Four silver dollars," Sect Gong couldn't help but be speechless, his monthly salary was only two silver dollars, plus some other benefits, it couldn't exceed three silver dollars a month, "You have to pay a month and a half to buy this thing." ”

"Four silver dollars is the cost!" Jing Jiaoyu glared at him fiercely, "Xiao Li always has to make money selling this thing, right?"

"At least two months without food or drink for the whole family," Sect Xiong said in a sullen voice, the income of the two was actually about the same, but he was curious, "What did you buy this thing for?"

"That's what I said," Gong Jiaoyu laughed, but his eyes were rolling, "I always feel that if you do some programs like Xiao Li said, it will be more popular than newspapers...... It doesn't need to be literate. ”

"Buying such an expensive thing home just for fun?" Sect Xiong shook his head disdainfully, "If you want me to say, it's only useful in the army, and it's useless for ordinary people to want this." ”

No way, as soon as something new comes out, not everyone can see his prospects.

Li Yongsheng smiled silently, and said in his heart You don't know the experience of the radio in the earth world, it used to be the only high-end household appliance in the family, and the price was not cheap.

Jing Jiaoyu was already very satisfied with such test results, and he didn't want to hit Li Yongsheng, so he said again, "Xiao Li, I think that if you can let the radio also transmit words and communicate with the radio, the application range will be greater." ”

I will go to it, Li Yongsheng looked at him in amazement: I just made the radio, you want to make a walkie-talkie?

Sect Xiong poured another basin of cold water on him, "How different can that be from the Communication Stone?"