After more than half an hour of the exam, Bai Jing finally spoke. It was more than an hour. Renault was so bored when he waited. No wonder when he was in a daze, the eyes around him were not right. Not to mention, he really looked like a secret master.

It’s not that Reno wanted to disguise himself. Da Chu was too boring. If he was on Earth, he could think while playing games, or have a bottle of beer, or think while watching movies, but there was nothing here, and he could only stare like an idiot.

"How far can the distance be?" Bai Jing asked.

Renault pondered for three seconds, and he found that this was a good habit. This question was not easy to answer. Technology has never been isolated. Any kind of technological invention is related. Bai Jing can ask this, which means that he has not systematically learned it, and the problem itself is wrong, or it is not rigorous enough.

Considering the average level of the people of Da Chu and adding ten times of parameters, it would be better to be a secret master than an ordinary person's knowledge structure. With this standard, it would be much easier to communicate with the secret master.

"How long the wire will last, the signal will be as far away as the signal will be." Reynold replied. If there are no prerequisites, it cannot be said that this answer is wrong.

Bai Jing seemed to have this habit. When she heard Renault's answer, she thought for a moment and continued to ask: "Does the wire have to be made of copper wire?"

Awesome, does this take into account the cost issue?

Lao Tie, if you think too much, the key is not the cost. You should think about how to get a stable power supply. Without a stable power supply, you can’t play with it. How far can the signal be transmitted by the voltage and current of the hand-crank generator?

As for this question, it is easy to answer. Of course, you need to use copper. If you have the ability to build an electrolytic aluminum processing center, it is also good to use aluminum. Forget iron, the resistivity is too high and requires a larger voltage and current.

Try it with iron wire. It’s windy, rainy, sunny, and it’s over in a few months.

"Yes, copper wire must be used at present." Renault said affirmatively.

Fire still rarely speaks, so he is more willing to do it, cut a piece of copper wire about one meter, pull over the small balance, measure the weight, and pick up the pen and make up on the paper.

Soon, the flame weighed, and the copper wire pressed by Renault was about one square millimeter, one meter long, without an enamel, weighed ten grams.

One mile is worth one pound. The consumption of flames is still good. Although it is a double line, it is nothing to double the consumption of copper. Da Chu is not short of copper.

He gave Bai Jing a look with the weight recorded on the paper and the calculated numbers. The two secret masters nodded at the same time, showing joy on their faces.

It is still a bit difficult to plan for Da Chu, but it is just connecting the prefectures and prefectures. This can be done. After all, Da Chu only has eight prefectures and seventy-two prefectures, plus nine border cities and eighty lines. Although the distance is a little far, it is acceptable.

Of course, I can only think about it at the moment. There are too many things to consider. Just hang the copper wire outside like this. Can you expect the people of Great Chu to cut it and turn it into bronze ware?

Copper coins are also legal currency in Dachu. Although the face value is small, ordinary people use the most copper coins. Carrying a silver coin is equivalent to bringing a thousand copper coins. Not to mention that it is difficult to buy things, they are also afraid that others will rob them.

Bai Jing glanced at the top of her head and shook her head. The copper wire could not be moved up. She supported it with a wooden pole, and there was not much left that night.

Fire flame glanced at the ground, didn't shake his head, nor nodded. He didn't know if it could be used if it was buried underground.

"Two, don't worry, there is another problem that must be solved..."

"Wait a minute, I'm going to go out and come back." Renault suddenly received an alarm from the God of Wealth, and didn't care about the two secret masters. He pushed the door open and ran out.

"Tiger teeth, prepare horses, go out of the city."

The war horse was just brought in, and Ziying also ran over. The mansion was so chaotic these days. There were too many people. It often rushed to get rid of people. It was so annoying that it finally saw Renault, so it could take up the war horse it looked down upon, and kicked the war horse away with one hoof.

Although Ziying is still in her childhood, she has a good variety. In addition, she has eaten red ginseng for several months, her size is no longer shorter than an ordinary war horse.

"Stop making trouble, I'm going to leave the city." Renault pushed Ziying's head away and ran over to lead the war horse.

With one hoof, he kicked the war horse away again. Renault was angry at that time. You naughty kid were making trouble, and you didn't see me in a hurry.

Since you don't let me ride a horse, then ride you. Renault pressed Ziying's back and turned over and rode up. He didn't learn anything else in Dachu. The improvement of equestrianism was too obvious. He felt that if he returned to Earth, he would be fine if he had to perform equestrian performances.

Ziying felt uncomfortable when she was ridden on her back. This was Renault. If it were someone else, she would have been blown away by you.

"Ziying, go quickly, let's go out of the city." After patting his neck, Ziying jumped twice and ran out of the Shengong Hall. The Gong family's house was quite small, but for it, it couldn't run away at all. After living here for a few days, I had been tired of playing and was annoyed. When I saw Renault letting it run out, I was excited at the time.

When Huya saw that it was not good, he jumped off the war horse and ran quickly to the yard where the dragon horse was. Without taking a saddle, he jumped onto a dragon horse and chased it out. Li Si and Chu Rui followed suit and gave up the war horse. Although these war horses are good adult horses, they still have a clear difference in speed compared to the young dragon horses.

When he arrived at the fire kiln outside the city, Renault jumped down and patted Ziying's neck: "Go to play by yourself, don't run away. Someone is in trouble. Come back and find me."

There is a big difference between a dragon horse and a war horse. Not only in terms of speed, endurance, but also in intelligence, the most obvious difference. In just a few months, Renault has been able to understand most of the time he speaks.

Cui Qing has been very upset during this period. His husband is studying a very magical thing called telephone, and he can also learn interesting numbers, but his husband doesn't let him learn in the Temple of Shengong. When he wakes up in the morning, the first thing he does is to let Huya drive him out of the Temple and go to the fire kiln outside the city to burn a toilet.

It has been more than half a month since I burned dozens of kilns, but the things my husband asked for were not burned out. In addition to making a toilet, he also burned other things, such as plates, bowls, vases, etc.

The gentleman once said that a flush toilet is a kind of porcelain, and it is a very good porcelain. Since it can burn such a large piece of porcelain, it is naturally no problem for small pieces. Therefore, Cui Qing will add a lot of private goods in each kiln.

Renault naturally knew about this and had already let wealth be watched. He did not object to Cui Qing's private use of the public. Anyway, the quality of the porcelain from Dachu is really bad. If you do it casually, you can do it and you can always use it.

Renault is a standard pragmatist. No matter how good it is, he will not think about anything that is not useful, he must taste it, and no matter how difficult it is, he must find a way to get it out.

So he is not very concerned about steelmaking, at least he is not at the moment. toilet paper, toilet, porcelain, these are daily necessities and need to be made out as soon as possible and waiting for use at home.

"Mr. Cui Qing, the kiln has been opened. Do you want to see?" The person who spoke was the kiln head of the fire kiln, named Li Chun, who was not only the kiln head, but also a master craftsman. He was originally a registered craftsman in the Ministry of Works, and Cui Qing took down the kiln and the people.

This fire kiln was originally an official kiln, which was only responsible for firing porcelain. As long as the Ministry of Revenue could still make money, the kiln fire would not be interrupted. In a year, it could also burn ten kilns and eight kilns of porcelain.

The problem is that the yield rate is too low, and only a few dozen or even hundreds of kilns can produce one kiln of porcelain. Therefore, when firing the kiln, there will not be too many porcelain tires inside, and usually one hundred pieces will be capped.

There is no way, too many failures, and I dare not put too many porcelain pieces in a kiln, so I can't afford to waste it. As a result, occasionally, I burned it with good luck and still got very few porcelains. It is precisely for this reason that the porcelain of Dachu has never been popularized, and it is still mainly pottery.

In fact, if you fail, you won’t be completely wasted. What you burn is not porcelain, and pottery can be sold for a few dollars.

Of course, there are many porcelain kilns like this in Dachu, including the Ministry of Works, the Royal Imperial Kiln, and the folk folk kilns. There are hundreds of fire kilns that burn porcelain alone.

The imperial kiln only supplies royalty, and the official kilns are used by all officials in the court. Only those from the private kilns will flow into the market and be used by the wealthy people in Da Chu. More of them are on the road of gold, selling outside Da Chu, and in exchange for gold of equal weight.

There is a reason why porcelain is so valuable. Sour iron cannot be used as tableware, it will rust. There are also gold and silver tableware, but the value is also very high. After using it for a long time, it needs to be processed, otherwise it will be ugly. The gold plate will be dim after a long time, and the silver plate will become dirty and look dirty and old.

There are also some places where the lead disk is used, but it turns out that all the nobles who use lead disk die earlier. It’s not bad to use tin disks, but the same problem is ugly.

This is because the smelting technology is not up to standard. The melting points of lead and tin are relatively low and are easy to melt and cast. Gold and silver can only be heated to create, and these two precious metals have very good elongation.

There are many metals in the Great Chu world, but those with high melting points are too difficult to make. Ordinary nobles mostly use copper and tin to make tableware, and those with more money can use gold and silver.

As for the people, tableware is mostly made of wood, which is cheap and easy to make, and it doesn’t hurt if it breaks. A little better, the craftsmanship of using pottery and Dachu’s pottery is still good.

When porcelain appears, all these tableware has to stand aside. Not only does the porcelain look smooth and clean, but it can also burn patterns on it, making it so beautiful that it is a bit confusing. In addition, the rare things are precious. Not to mention the Great Chu, the value of porcelain in the Great Chu country is also quite amazing.

"Of course I have to see it, let's go." Cui Qing would personally check every kiln. So far, half of the things burned are broken and half are pottery. Recently, the furnaces have been slightly better, and at least some of the shadows of porcelain can be seen.

Cui Qing was in a hurry to burn out the porcelain toilet and wanted to go back and follow his husband, learn more and watch more, and a magical tool for talking on the phone. He felt so itchy when he thought about it. In recent days, he had not been able to concentrate and was often distracted.
Chapter completed!