Zhao Kuangyi came to the Song family, and there were many people.

At least 70 yamen came, and there were more than 20 young ladies. Yesterday, seven pictures almost caused a sensation in the entire capital. Who is not curious? There are also servants and maids, including Yuping and Song Jiu's elder sister, and more than a hundred people scattered in the front yard or back yard of the Song family. There is Pan Lian'er in the middle, Yuping is in the back yard, and Pan Lian'er is in the front yard, looking at the Song family and the students in the classroom with big eyes.

Song Jiu is teaching and has not come out.

So these people gathered together to discuss.

Zhao Kuangyi came, and Song Jiu could not be negligent, so he announced the end of get out of class and paid a visit to Zhao Kuangyi. Zhao Kuangyi asked straight to the point: "Song Jiu, I ask you, why can humans go to heaven?"

Zhao Kuangyi was so depressed that he was so depressed that he actually didn't ask at all. How could a person go to heaven?

Song Jiu said: "Don't be anxious."

He greeted these yamen one by one, came to Pan Lian'er and said, "I have met Miss Pan."

A group of young ladies burst into laughter.

Pan Lian'er blushed and pointed at Song Jiu and said, "You bad guy, you will lie."

"Miss Pan, I'm not a bad person. I don't believe you ask the people in the river. I won't lie. At the beginning, I told His Highness the Second King that I could increase my iron ore production. If you ask the Second King, did I realize it?"

"Talk the serious business!" Zhao Kuangyi shouted, thinking to himself, Pan Mei's three sons are not good, why did he bring Pan Lian'er here? Isn't this sending the fish into the cat's mouth?

"The Second King, and you, come in with me," Song Jiu took them to a classroom, full of stuff, and called out another student, whispered a few words, and the student ran to the back room to get a few things. Song Jiu first put a box on the table, poured water into it, and took out a stone, saying, "What will happen if I put the stone in?"

A group of yamen wanted to raise their middle fingers together. Is there still a question about this result?

"Everyone knows it will sink, so I won't test it," Song Jiu poured out the water, took out a porcelain bottle, and poured a white liquid into it. Some people know that it is mercury. This thing appeared in China for a long time, but it is very bad. It is either used to harm people, or Taoist monks use it to make small meatballs for people to eat. By the Ming Dynasty, many emperors were killed by it, and it is said that Li Shimin also ate the Western monk Xiaomei. In fact, it has a wide range of uses. If Song Jiu became interested in Lei Gong, he had to have mercury. The current one also needs it, which is a thermometer. At the same time, he can also make various catalysts. He will teach in depth next year, and if he does experiments in class, he cannot do without it.

I prepared a little, not too much, and I just put the box halfway.

Song Jiu put the stone in again and exclaimed, and the stone actually floated on it. Song Jiu said, "Everyone takes turns to watch it, but don't touch it. It's mercury and is poisonous. I'll get something."

He brought another iron spoon and put it in it, but it was still floating. As he threw a few copper coins in, he still floated. He took up the stones, copper coins and iron spoons, and asked a student to wash them clean, then pour the mercury back into the bottle, saying, "Why do they sink in the water but not in the mercury?"

Which one can answer?

"The reason is very simple. All kinds of flowing substances have buoyancy, and the buoyancy is different. The heavier the buoyancy, the greater the buoyancy, the lighter the buoyancy. Therefore, stones and copper coins will sink to the bottom of the water, but float on mercury. This is also the reason why the boat is loading heavier than on water. Not only water, mercury and other liquids and gases also have buoyancy, but they are very light and cannot be seen. If designed properly, they can carry things in the air. For example, Kongming Lantern. But if the design is higher and brighter, the weight carried is not a lamp, but heavier things, including people. Therefore, people can go to heaven."

"Really or not?" Fu Zhaoshou asked.

"It won't be fake. When I sort out the iron and steel problem, I will do such an experiment. Then let you go to the sky to take a look."

"I'm going," Pan Weizheng shouted loudly in the crowd.

"Okay, the effect will be better in winter." Song Jiu touched Pan Weizheng's little head, which was his future brother-in-law. In fact, as Pan Weigu said, Yu Ping wrapped around his fingers, and Song Jiu was used to Yu Ping coming to visit him from time to time. In addition, he was very busy, and gradually forgot Pan Lian'er. But when Pan Lian'er came, Song Jiu was hooked away three points of his soul again.

"Can humans really go to heaven?" Zhao Kuangyi murmured.

"The two kings, not only can humans go to heaven, but they can also fly like birds. However, the technology is too complicated, and I guess I can't do it. I can only carry people to heaven and see it."

"Why can you jump down from the sky?"

"If you can go to heaven, you can jump down."

"You jump from the rooftops of your house."

"The Two Kings," Song Jiu swallowed, could he jump? After a while, he said: "That's different. This jumping down requires some design, and requires height. The higher the safer the higher the risk, the lower the risk. At least seventy or eighty feet away from the ground to jump down, otherwise there will be danger."

"Nonsense."

"Look," Song Jiu used chalk to write the momentum theorem formula, only half of which were not written. This formula and calculus were written. At this time, all the people on earth could be concentrated, and no one could understand it.

"Can you really go to heaven, can you really jump down?"

"The Second King, what is the Imperial Street? How dare I joking about it?"

"Just, Song Jiu, do you know how many Yanchens are impeaching the emperor's brother?"

"The Second King, please tell Your Majesty that he will have fun in the palace. Think about it, what about me who uses it to provide entertainment for the people and put it in the court? When attacking city checkpoints, if you don't understand the enemy's situation, you will often suffer heavy casualties. But in front of the two armies, a matter will rise up and rise to a height of dozens of feet. Is the situation in the enemy's city clear at a glance? This Hezhou will develop, which will involve countless technologies, involving all aspects of military and civilian use. The only thing that is profitable for me will be a little bit of a fly-headed profit, and the court is the real biggest beneficiary."

"Stop, stop, I'll ask you, where are the remaining paintings?" Zhao Kuangyi said. Only eight paintings appeared, which were already earth-shaking. There are still twenty paintings in total!

"The second king, the only fun thing is this amusement park. The remaining commercial or civilians will be posted. You will know."

"You use this to make money from heaven?"

"It will cost money when it is built, and it will also require special personnel to serve at least four or five people just in case. It will cost a little."

“How much does it cost?”

"How can I know now?" Song Jiu beat him up.

Zhao Kuangyi understood that since ancient times, it has been a dream to go to heaven. Moreover, he can fly down from such a high place in the sky. If a loaf of bread is always a permanent price, the charge will be an astonishing number.

He didn't care much about Zhao Kuangyi. As long as he didn't steal or rob, even if he "flyed" and collected 1,000 guan at a time, it was Song Jiu's affairs with the guests, and it had nothing to do with the court. He was concerned about another thing: "Song Jiu, do you have other technologies?"

"Yes, once it is researched, as long as it is necessary for the court, I will take the initiative to hand it over to the court. By the way, the second king, you are here, I will just say two things. The first thing is to send someone to Xuzhou, Shouzhou and Haozhou to find out if there is any carbonite and where it should be, but it is buried deeper. In the future, a large amount of carbonite will be used to smelter iron and steelmaking. There is no water transport in the north, so the cost of transporting to the capital will be very high."

There is a prerequisite for this, that is, the use of gunpowder can be used to deeply mine.

Later generations had large coal mines in Huainan, Huainan, and Xuzhou, but they were not good now. They started using coal and were very backward, including Song Jiu who continued to use charcoal to keep heating last winter, rather than using coal stoves. This is a backward heating method. One is that charcoal is expensive, and the other is that charcoal is more likely to be poisoned. Of course, it is not possible to find coal. Anthracite must be found to truly replace charcoal. This is of great significance. Just because the charcoal that the people roasted fire in a year now does not know how many forests they have destroyed.

Moreover, the technology is backward, and most of the carbohydrates that can be found are those near-open-pit coal mines.

Song Jiu asked students and instructors to use gunpowder. This cannot solve gas problems, but it can be replaced by some methods. For example, the mine cave is obliquely downward, and there is no need to grow bamboo tubes. Instead, some flammable long lines are wrapped in small balls and throw them down, and ignite the long lines. Then the gas explosion is far away from the service craftsmen and there will be no danger of life. The use of gunpowder will be very efficient, but it is more likely to cause landslides. This can be avoided by using second and third air explosions. The first time the ore is blown out, and some ore is transported out the second time, and the gunpowder is ignited. Using the sound and impact of the gunpowder, the unsolid ore body is collapsed in advance, thereby avoiding miners' landslides when mining below.

The wisdom of the people cannot be ignored. Once the principles are spread to various reasons, more smart people will come up with various ways to improve efficiency and strengthen safety.

But before the promotion, most of the carbonites in the Song Dynasty appeared in Hebei, Shandong, Hedong and Shaanxi. Although they were easy to mine, they were mostly in mountainous areas and were not easy to transport. If you want to achieve large-scale advanced iron and steel smelting, you must find a large coal mine from the Lianghuai River in Xuzhou, and then transport it to various places with the convenience of the Bian River.

He also said: "The two kings will find a saline-alkali land with the Bian River in Chenliu County to build a place for smelting coke, blast furnace and steelmaking."

“Coke?”

"The carbonite is further coking and the temperature it is burning."

"How much money will you use?"

"I can use some money, but at first I just take it, and there will be no lot of money. Once the technology is fully mature, the court can promote it. At that time, the court would get a lot of high-quality steel every year. Even its technology can be used to burn good porcelain and build more solid, practical and fire-resistant houses, reducing the cost of bricks and tiles, so that people in most parts of the country can keep warm in winter. Oh, what a big deal is there?"

"If you can really do this for the court, I can make the decision, and the court will take charge of the principal of the bridge construction, warehouse dock and academy."

"That's great," Song Jiu said excitedly.

Among them, the bridge costs the least, but the bridge is the most important. Only when the bridge is built can it be realized one by one.

The one who spends the most money is not the houses. It is not clear how real estate is broken up from later generations, so it is considered a waste of life. Therefore, the one who spends the most money is not the main shops or houses, but the wharfs. The area is too large, and the court will take over it, which will reduce the pressure on Song Jiu by half.

What else Zhao Kuangyi wanted to say? Seeing Song Jiu putting in the air and smiling, he finally stopped talking, stood up and took Liu Yi and the yamen runners away. On the way, Zhao Kuangyi asked in confusion: "Judge Liu, can you go to heaven if you are a real person?"
Chapter completed!