Tang Jian, due to Yang Heng's arrival, changed from a tragic character to a semi-tragic character. That's why his official position was not promoted until this time when Li Er decided to set up a sixth prison, he promoted him.

If you talk about his first tragedy, it should be great sorrow and joy. Because he was arrested by Jie Li, this was great sorrow. As a result, after he came back, he went to the Minister of Personnel. Because of his interaction with Li Er, one of his sons refuted Yu Zhang as his wife.

But it was different after Yang Heng arrived. First of all, he was detained by Jie Li without a mission, so he naturally would not be promoted or promoted. This interaction was beyond words, and even Yu Zhang became Yang Heng's predetermined wife.

This time, because of the telegram matter, at Yang Heng's suggestion, Li Er decided to set up a new prison. At first, he wanted to call the intelligence prison, but Yang Heng thought that this was too direct, otherwise it would be better to call the information prison. Because of his special nature, he gave Tang Jian the position of director of the information prison. Therefore, he was directly responsible to the emperor, so he was a third-rank official. At first, Li Er planned to call the chief official eunuch, but under Yang Heng's strong opposition, he changed to the director.

The information monitoring system is set up like this. Information monitoring is the general manager, with four departments and four bureaus. The first bureau is the Internal Intelligence Bureau, the second bureau is the External Intelligence Bureau, the third is the Secret Intelligence Bureau, and the fourth is the Telecommunications Bureau.

Now the first and second games are still vacant, and the third game brings the spies behind Li Er into the back. Naturally, the person behind Li Er is the director. This is a mysterious position and will not even be announced to the public. The only one announced to the public is the director Tang Jian, the director of the new prison, Yang Heng, one of the few prisons, and naturally there are some subordinates and auxiliary positions. Even in this prison, only Tang Jian is in court, even when he goes to work, Yang Heng doesn't go most of the time, but there is just an office desk inside.

Yang Li also followed the position of a sixth-rank supervisor, which was not recommended by Yang Heng. It was just that Li Er heard that Yang Li was Yang Heng's cousin, and the cable telegraph matter was mainly under Yang Li's responsibility, so he directly gave such a position.

But in the court, I didn't hear any objections. Why? This is a new functional department and has nothing to do with anyone. They were so happy that they won't compete with Li Er, so they all passed the establishment of information supervision, and they were even waiting to watch jokes.

"You are your direct leader. Do you think this telegram should be the same?" This old guy actually saw that the telegram is a good thing. "I'll set up one for your home." "Okay, that's OK, that's OK, this is what you set up for yourself, not what you want." Is this the legendary thing that you want to be a bitch and a archway?

"Well, okay, okay, even if I respect you, Director." Yang Heng regretted this. It would be great if he directly followed Li Er's words. Then wouldn't Tang Jian be a eunuch?

"However, Director Tang, there is one thing to make clear. You need to arrange someone to copy this codebook yourself, and the telegrapher also needs you to find someone to learn. I don't provide it here."

"Cheng, Cheng, this is easy to say. I will do it soon, but you have to set up the telegram as soon as possible." So another line was set up.

The layout looks like this. The front desk is located in the palace. Li Er specially marked a place close to the palace wall and a river. Here, Yang Heng designed and built a second or third-storey building. This building was for receiving telegrams. Now the rooms are empty. Li Er believes that these rooms will slowly fill up, and the information supervisor builds another office next to this small building. Usually, Tang Jian works here, and even Yang Heng occasionally comes to work, but the telegraphers inside are all for palace maids. Li Erzhen has a sense of forward-looking. In Yang Heng's previous life, most of the operators were girls. So, the palace maids have another place to be placed.

Now there are three routes, one is from Yang Heng’s house to the main room, one is from Tang Jian’s house to the main room, and the other is from Li Er’s residence to the main room. Li Er didn’t want to go there just a few steps. If this was a phone call, it would be full of the palace.

What was Yang Heng busy with at this time? Because all the telegram matters were handed over to Yang Li, Yang Heng basically didn't care about everything, but he was not idle either. He was competing with the voltmeter.

Some people may think that it is too much to make a voltmeter at this time. In fact, the voltmeter is really simple. What Yang Heng needs to solve is the matter of a hairspring. This hairspring is the most important part of a voltmeter. If the hairspring is prone to deformation, the voltmeter will naturally be inaccurate. The others are simple. Shellag is a kind of rubber produced by Tubo and a by-product developed by Taoist priests. So, if the investment in scientific research is large, but sometimes it is not just a product, maybe there are several types. If you buy technology, it is one. Once this technology is purchased and used, it has dependence, and it does not necessarily have a special understanding of this technology. Naturally, there are times when there is only investment but no return. Isn't this allowed? No one is smooth sailing, right?

Although Yang Heng was worried about the hairspring, this matter was solved by the copper smith. After the copper was mixed with certain other ingredients, this small-scale rotating hairspring would basically not deform. There is also the problem with the dynamic coil shaft. First of all, the shaft is very simple. Just drill a small hole in some gems. Jewelry maker has this technique. Even gems will not waste it. It is made with only scraps. This does not even need to be wasted money. With the dynamic coil, with fine copper wire, will the dynamic coil be far away? Besides, magnets, as long as they are made with natural magnets, the same natural magnet ore can make a lot of magnets, so a voltmeter is made. The pointer is even simpler. In previous lives, aluminum was usually used as a pointer, but at this time, aluminum was naturally not made yet, and most other materials were heavy.

That, what's the trouble? Just make it with bamboo. Yang Heng's forehead is a row of his head, and this one does not need to be used for conduction, so he uses bamboo to make it even easier to make the counterweight. He leaves more bamboo at the end of the pointer and grind it slowly until the counterweights on both sides are the same.

On the surface, wouldn’t it be better to draw a scale on a piece of white paper? The most troublesome thing here is the fixed voltage. This cannot be set casually. Who knows what the safe voltage should be? So Yang Heng remembered the previous life that introduced the ore radio. He found some ore, which needs to be used for rectification before it can be displayed on the surface. So this is also a necessary step. After many tests, it was determined which is silicon ore and which is germanium ore. Naturally, the voltage drops of these two ores are different, so the voltage was determined, which is basically the same as Yang Heng’s previous life.

After measurement, I found that the electricity emitted was about 130 volts, which was neither up nor down. It seemed that it was better to set the voltage to the same as in the previous life, and 220 volts were the standard voltage.

Of course, Yang Heng introduced a new letter at this moment, that is, the letter v.

"Brother, why is this voltage, voltage, right? The voltage should be represented by this symbol?" "Is this? Look, the needle is swaying around, isn't it the same as this symbol? That's why I set such a symbol." Will I tell you that there are many people in later generations, and a person named Volt will appear in foreign countries hundreds of years later? Yang Heng used it like this, which is also a habitual use in his previous life. If it is changed to another usage, it is better to install the previous life directly.

That is, it will be a mistake once. If you change the writing or statement in this world, if you accidentally miss it, you have to explain it. If you accidentally miss it, you have to explain it again. Especially the children around Yang Heng are all human geniuses. Once Yang Heng’s statements are different, will it easily cause the children’s annoyance? If someone asks, you can ask Dandan to explain it to you. No, this sentence needs to be compiled. (To be continued...)
Chapter completed!