Knowing the later history of Lu Dao, there is always a bit of kinship in my heart, first Zhao Pu and Zhao Kuang Yi disputed, I don't know how many big guys fell in the middle of Lu Dao, and even how many people died, those who died did not enter the stream, and would not let the historian record it in the annals of history. Then Da Zhao's father and son three, and three Zhao, etc., even Zhao Kuangyi's son couldn't stand it, and began to lose his heart. This general trend is much more powerful than those bulldozers that open businesses behind, and God knows how many people died all the way.

But now surely no one would have thought of it.

Song Jiu can't think about it, don't think that he is smart, he has a golden finger, or an incomplete golden finger, how much does history remember? If I hadn't read a few novels, I might not even know some of the inside stories of the early Song Dynasty. That's it, how many detailed stories of the big men of the Song Dynasty can be known? This gold finger is incomplete.

Mathematics, physics and chemistry are good, and I have to thank my tutor and nephew in college, but how difficult will it be to transfer the knowledge of my previous life to the practical application of this backward era?

It's better to pretend to be confused, he is a loose official, a technical official, in the Song Dynasty, the technical officials were worthless, and in fact they had no rights in their hands. What can they do with themselves? Pretend to be confused, don't get involved!

After figuring it out, he began to teach seriously, and even asked Zhao Dezhao by name, if there is anything you don't understand, please ask.

Lu Duan nodded secretly, where did he know what Song Jiu thought in his heart, thinking that it was normal, what an honor it was for the prince to come to watch the study, this Xiao Jiu was a little stupid with fright. However, the courage is still not small, and with a little dialing, it will return to normal. is also very smart, otherwise if someone else meets that old Western gentleman, he may not be able to learn anything.

His thoughts will be reported to Zhao Kuangyin, and this evaluation will also be used as a reference for Zhao Kuangyin to see Song Jiu in the future.

After a class, the little girl asked her brother to take her brother out to play for most of the day before coming back. At this time, the common people have many children, which is not rare, and they have to be busy with their livelihoods, so the children are scattered. Song Jiu also dispersed, letting the boy take the little girl out to play, only warning them not to play with water and fire.

Boys are called big dogs, girls are called puppies, all of them are like this, the children of high-ranking officials and nobles have cheap names, Song Jiu's small name is Jiuzhu, he grew fat when he was a child, and he had a lot of meat, because several children died in front of him, and his father simply took a very popular and "cheap" big name called Song Jiu, that is, Tongjiu, hoping that Song Jiu could survive. Song De didn't expect that this name would bring great benefits to his son at that time, Song Jiu, Song Jiu, and Zhao Kuangyin established the country name as Song, can you not be happy when you see this name?

It's okay for a boy to call a dog or a pig, it's always a bit bad for a girl to call a puppy, Song Jiu wants to give them a name, but the old woman may be because she is from the Northern Han Dynasty, or maybe her son and daughter-in-law died early, her personality has become eccentric, taciturn, and no one should enter, or she subconsciously saw that the more prosperous the capital of the Song Dynasty, the more hateful she became, and Song Jiu was too lazy to do much.

The little girl didn't know why Lu Dao didn't play outside, ran home, saw Song Jiu stretch out his hand and said, "Daddy, hug." ”

Song Jiu hugged helplessly.

Zhao Dezhao was stunned and asked, "Cheng Shilang, are you married?" ”

Song Jiu wanted to spurt blood, don't mention this, as soon as he mentioned the paper full of bitter tears, he gritted his teeth and said: "Your Highness, you ask your second emperor uncle about the story in the middle." ”

"Uncle Erhuang asked you to get married?"

"Prince......" Song Jiu couldn't go on.

"Cheng Shilang, I listened to the class for two days, and found that this course is also broad and profound."

"Your Highness, that course is broad and profound," Song Jiu said lightly. In fact, I am saying in my heart that it is not only broad and profound, but also boundless, and deep. However, it cannot be said that Confucianism is not as broad as mathematics, physics and chemistry, Confucianism is philosophy, and it is also broad and profound, but they are two different fields.

"There are a few books that the undertaker can consider."

"It's so expensive...... it's a book," Song Jiu shook his head. Asking for money everywhere, such as Hezhou's loss, half of which has not been paid, and you can't get the title deed if you don't pay it, which is always a bit unrealistic. And where do you have the time to write?

"If the undertaker publishes a book, I am willing to sponsor you."

Zhao Dezhao may not have much money, but he still has the financial resources to sponsor Song Jiu to publish three or four books, but Song Jiu said: "Thank you, Your Highness." ”

If you don't explicitly agree, you can pretend to be confused, and if you publish a book together, you will be wrapped even deeper, and you can't agree. After talking for a while, Song Jiu always maintained a respectful and distant attitude and talked to Zhao Dezhao. But it is possible that Song Jiu's lecture today is relatively easy to understand, Zhao Dezhao not only had the idea of encouraging Song Jiu to publish a book, but also listened to the interest, and kept hearing that after class in the evening, he did not go to the riverbank to see, he used to quietly come to the riverbank to see the big scene of thousands of people listening to the school. Instead, he followed Song Jiu to the test house.

Several soldiers on duty saw Zhao Dezhao and knelt down on one leg to salute together, of course, they would not let him go. Not only Zhao Dezhao was released, Liu Gonggong was released, and Lu Duan was released.

Song Jiu thought about the treatment of several sisters, and was speechless in his heart.

I brought it in, and now I mainly study two techniques, the first is cement, which is thanks to his high school physics teacher, who is very lively in his lectures and often uses some simple tests to deepen the impression of students. Including Song Jiu's teaching methods now, most of them are learning from this teacher.

Among them, it is mentioned that some manufacturing methods of manual cement, several, the first is lime slag cement, the residue after coal is burned, the more fully sintered, the better the quality, the white and red slag is picked out, washed, dried, and ground finely, this is very difficult, it is estimated that a large number of high-quality slag can be obtained after the blast furnace comes out. Then use the newly kiln quicklime pulverization, put the quickgsum in the pot and fry, fry into semi-hydrated gypsum, and mix the three materials evenly according to a certain proportion, it becomes cement, if the manufacturing standard, it can be equivalent to the quality of two or three hundred grade cement. The cost will be relatively high, but it is the best choice in this era.

The second is brick and tile powder cement, the tile brick pottery is washed and dried, smashed, ground fine, lime and gypsum are treated with the previous method, together it is brick and tile powder cement, the higher the clay composition of bricks and tiles, the better the effect, if the proportion of clay can reach a high point, the cement strength can far exceed the former. Or use white porcelain instead of slag and brick and tile powder, as long as you don't touch the iron, you can make white cement. The advantages of this kind of soil cement are good water resistance, good acid and alkali corrosion resistance, and the disadvantages are more obvious, high cost, low strength, poor frost resistance, and slow solidification speed. Therefore, there will be many restrictions when using, one is that it cannot be constructed in winter, the second is that it must be maintained for about 20 days after the construction is completed, and the third is that the ground must increase the amount of lime, and when burning beams and columns and slabs, the number of steel bars can only be added regardless of the cost. At four o'clock, it can be used in the capital, and then go north, especially Yanshan to the north, this kind of cement is not very applicable, but it is just right to go south. Its quality may not be able to catch up with the glutinous rice flour lime of the triple soil used at this time, but the triple soil has more shortcomings, one is that the construction time is longer, the cost of the strict standard triple soil is also higher, the biggest disadvantage is that it can not be matched with steel bars, the cement is poor cement, but there are steel bars on the different, can make the building higher, stronger and stronger, and reduce its own quality at the same time.

If you want to make a high-rise building, if you want to make a blast furnace, you have to ask for cement, even if it is this kind of primitive cement.

Easier said than done.

Generally speaking, its solidity is only equivalent to 2300 standard cement, if it is sloppy, it may not even have the strength of 200 cement, that can not be used, if the standard is strictly elegant, maybe it can exceed 300, and even reach 400 strength. If the strength of 400 can be reached, as long as the skyscrapers are not repaired, ordinary four- and five-story buildings and blast furnaces can be smashed down at any cost, and they can be realized.

It's not as difficult as the following techniques.

Whether it is iron smelting or porcelain with good quality in the future, a key factor is temperature.

If you want the temperature, you must have coke.

This appeared earlier, it seems to have appeared in the late Southern Song Dynasty, and now Song Jiu has not seen it. As long as bituminous coal is heated under the condition of isolated air, it can be made into coke after drying, pyrolysis, melting, bonding, solidification and shrinkage.

But coke also has good and bad, first of all, it is to distinguish the types of bituminous coal, long-flame coal, gas coal, fertile coal, coking coal, lean coal and lean coal six kinds of bituminous coal, each coking situation is different, if you want to make good coke, you must identify them, and then match.

Then we will carry out the research and development of various technologies.

There is another problem that Song Jiu cannot solve, that is, the sulfur content, if the sulfur content is high, the sulfur will be brought into the iron smelting, and the iron quality will be poor. With today's conditions, how can Song Jiu achieve desulfurization, it can only be said that using blast furnaces to smelt iron, the iron smelted is definitely better than those small earth stoves in Hebei, and it will not form a serious waste.

With the report of the officials who studied, the imperial court gradually paid attention to it, and now there is no need for Song Jiu to buy materials, as long as Song Jiu gives an order, Kaifeng Mansion will send someone to send relevant materials over to save time for Song Jiu. There is no reward yet, and this is indispensable, once it is successful, it is the time for the court to issue rewards.

The yard is more miscellaneous, there is no need to build a blast furnace, there is no need to build a blast furnace, all kinds of basic techniques have been developed, and the blast furnace will be there, and there will also be better steel. It's just that there is not much gunpowder, only a few catties of quantity is used for explanation, otherwise it will be tested in the future, and it is inseparable from the fire, and it is too dangerous to put gunpowder in front.

Song Jiu took the students to tinker, and Zhao Dezhao watched on the side, asking questions non-stop. Even because of his young age, he wanted to help, Song Jiu dared to ask him to help, and went back immediately, with a black face, Zhao Kuangyin was in a hurry with himself.

Block him with your arm, don't let him move, see it, ask it, and never reach out and touch it.

In fact, when the city wall was blown up, Song Jiu took his students to develop them, and both of these things had some eyebrows, and when it was almost dark, the group went back. Song Jiu didn't dare to leave Zhao Dezhao for dinner, that was the real loss of decency.

Then he called out the four painters: "From today onwards, you can go to the Royal Street every two days to put up a painting." ”

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