Author: big bell

In less than half an hour, Li Zhao rushed over. In fact, he had not gone far. At such an urgent moment, he went out after sending the emperor here. The purpose was to let Wu Quan pay close attention to the army, unusual movements and suspicious movements in Guizhou.

place.

"Your Majesty, Zhao is here. What do you want to do with Zhao?"

Li Zhao didn't show up either. He really didn't want to waste time serving the emperor at the moment. Things outside were complicated and confusing. He wanted to think carefully and take a closer look to ensure the smooth progress of tomorrow's grand event.

"It's nothing, I just wanted to ask if you have something that can send messages over long distances."

He didn't mention the villain's conspiracy, as if he didn't care at all.

Something that delivers messages over long distances? Hehe! Of course there is. The mobile phone in the previous life can travel across the entire earth, let alone long distances. Now he can naturally buy it, but he can't buy a signal system.

A satellite connection is required to connect a mobile phone. Where can he get a satellite?

Of course, in addition to mobile phones, there are other things that can receive messages from a distance, such as telegraphs and walkie-talkies.

There are also wired telephones.

The telegraph was something that was eliminated by society in the previous life, but it still played a great role in the old society. However, the operation process of the telegraph is too difficult and requires professionals. Where can they get it? Even if it is re-trained, it will take some time.

As for walkie-talkies, they are ready to use, which is convenient and fast. The problem is that the distance is too long.

The most direct and effective method is wired telephone, but the installation of telephone lines is a big project and it is really difficult to do at the moment.

Each has its own pros and cons.

Of course, another way is to use flying pigeons to send messages. At this moment, there are no flying pigeons to send messages in Da Qin, so of course I don’t know the purpose of flying pigeons. In fact, flying pigeons are also a good way to send messages. Where can I get this carrier pigeon? Li

Zhao has never seen flying pigeons so far, maybe he didn't pay attention!

He thought of department stores, but he had never bought an animal from a department store since he got it, so he didn't know if it would work. Of course, it would be better to use a wireless phone to buy flying pigeons, which was much more practical.

Li Zhao was in a dilemma. He didn't know whether to answer yes or no, but he had to answer, so he had to ask again: "How far is the distance?"

As far as I know from previous lives, the communication distance of general walkie-talkies is within two to three kilometers, the communication distance of professional walkie-talkies is within three to ten kilometers, and the communication distance of commercial walkie-talkies is within eight kilometers.

These walkie-talkies should be available in department stores, but he didn't know the price. Of course, he had to ask about the distance. If the communication distance was more than ten kilometers, there was no need to consider walkie-talkies.

In fact, wired phones are the best means of communication. If he had enough time, he would still like to talk about wired phones.

"Of course the further away the better! And the more secretive the better."

Li Zhao shook his head when he heard this. Even if he said this, he didn't say it. Everyone knew that the farther the better, but what he needed was the exact distance so that he could make a choice.

However, as soon as I heard the last sentence, "The more secretive the better," I started to think twice.

Although wired telephones are good, they can't provide concealment. Flying pigeons are also good, but concealment is risky. Walkie-talkies can do it, but distance is an issue.

"How about within twenty miles?"

Professional walkie-talkies can reach ten kilometers, which is twenty miles. If this distance is acceptable, he is still willing to help.

"Twenty li?" Ying Zheng understood "twenty", but he didn't know what "li" was.

At this time, there was no concept of ‘li’.

Li Zhao secretly patted his head, secretly blaming himself for forgetting that he was in Da Qin at this moment.

The unit of length in Da Qin is very simple, which is nothing more than inches, feet, and feet, all using the decimal system. Ten kilometers is more than 30,000 feet.

"That's more than 30,000 yuan."

"More than 30,000 yuan? That's enough!"

"Yes, if there is something, it can deliver the message at this distance."

"Oh!" Ying Zheng was surprised, "But what is it? Is it secret?"
Chapter completed!