After sleeping and waking up, the two drove the ox cart home, passed by a pond, smashed the ice and washed their faces, and were completely refreshed. When they passed by the market, they bought some rice and noodles to eat, and when they returned to the village, it was just time to make lunch.

The old Song family is a family of five, except for the two children, the two girls are a little boy. The big girl is about to leave the cabinet, is embroidering a quilt for herself, preparing a dowry, the youngest daughter is still young, holding it in her arms, the only man, half a child, he takes it with him every day, one is to be able to do some work, and then he is afraid of being at home, staying into a lazy man, and he can't stand up to the door in the future.

As soon as she entered the door, the youngest daughter saw it and immediately ran over with joy.

"Daddy, big brother!" She waved excitedly.

"Hey! Good girl! "Lao Song saw the little girl, forgot about any tiredness, left his son to move things by himself, hugged his daughter into the house, he was worried that his daughter was suffering from the cold, in this era, ordinary people, there is no difference between having a cold and losing his life. Lao Song secretly took out a piece of candied fruit from his arms and stuffed it into the little girl's hand, the little girl touched the candied fruit and hid it like a thief, this is the secret of the father and daughter, and no one else knows.

In fact, how can Lao Song favor one over the other, he also prepared for the eldest daughter, the eldest daughter is about to get married, and there will be fewer meetings in the future. Although this candied fruit is not valuable, it is also the taste of home, and if you can afford it, you will naturally not be stingy.

Xiao Song muttered and resigned himself to moving. Although he is the only seedling of a single passer, this kind of treatment has never been given.

"Your mother, you want to die quickly!" Li Hua laughed and scolded, threw a brick knife and mud to go down, and rewarded those cheap mouths.

Four catties of rice, two taels of oil, and a 'vinegar cloth'.

This is today's harvest, which is already too much for the average family. There is still a little money to spare, so I have to save it up and make a dowry for my eldest daughter.

There is also a calf at home, Lao Song is thinking, whether to get some wood, get a calf cart, if there are two ox carts, their income will be doubled, the calf can't pull much goods, but also three or four percent, a lot, or not a loss.

"I'm back, let's wash and eat." Lao Song's wife, Wang, saw that her husband and son were back, and her heart was also relieved, and she beckoned the two to dinner.

"Well, you've worked hard too." Li Hua reached out and touched his wife's face.

Under the reflection of the pond fire, her face was flushed.

In fact, ordinary people do not demand much.

When they can't eat enough, they think about food and clothing. When I have a full stomach, I want to eat better and dress better. The needs of ordinary people in Datang are limited to this.

Not only the Tang Dynasty, but also all dynasties, including the era in which Li Mu was in before his crossing, were all the same. This is the thinking of most ordinary people, and when you step out of the scope of 'ordinary people' and enter another level, the situation is different.

Differences in vision, knowledge, insight, class, etc., will bring more desires to people. In order to fill these desires, the things that deceive me and the law of the jungle will happen one after another.

The country finally ended from the last reincarnation, and what Li Mu was thinking about was how to make the next reincarnation come back later, and how to let the people live a better life.

Lantian County is his starting point.

……

Doing business cannot be achieved overnight, and there will always be many problems encountered in the process. For example, what Li Mu is now working on to solve is a problem that can only be encountered when he is actually doing things, and cannot be solved by theory.

At first, he found out that there was coal, limestone, and kaolin in Lantian County, and after he had the conditions to make cement, he set Lantian County as the location of the first cement factory. Everything went according to plan, but suddenly, problems arose.

The coal in Lantian County, with a shallow range of a few meters, is comparable in quality to the coal in Taiyuan, and there is no problem with its use. But after the surface layer, the quality of the coal below drops dramatically. It has a large sulfur content and a peculiar smell when burned. Two workers had already fainted because of this, and after Li Mu knew the situation, he ordered that only shallow coal should be dug for the time being, and if he smelled a peculiar smell when he was using it, he would immediately extinguish the fire.

After the on-site inspection, the situation is very not optimistic. If it is only a place of coal, this coal kiln can be discarded. However, the results of the inspection showed that about 80 percent of the coal kilns in the area were like this. In a short period of time, because of the small production, I was able to cope with it. But if it is a form of scale, it cannot be avoided no matter what.

So, this problem has to be solved.

Li Mu habitually looked for a solution in the system, but he failed this time.

There was no applicable solution in the system, so he looked for it several times, pulled the snake spirit out for assistance, and did not find a solution to the problem from the vast code.

This is the first time, and the system can't help at all.

Helpless, Li Mu had to figure out his own way.

After sifting through the memories of his two lifetimes, Li Mu finally found a possible way to solve it.

He vaguely remembered when he first arrived at the orphanage. Due to lack of funds, the orphanage did not have a heater. In order to prevent the children from freezing, the old dean used a rickshaw to buy honeycomb coal. Then mobilize the children to pick up branches for heating.

In China in the 90s, buildings were still rare, most of the people lived in bungalows, burned stoves for heating, and honeycomb coal was the best-selling thing in winter, not one. The orphanage couldn't buy much because of the lack of money. So when it's not enough, the old dean will take them to pick up other people's coal cores that have not been completely burned through. The physical memory of coal in memory is limited to this.

Li Mu vaguely remembered that the old dean said honeycomb coal, and his original words were that honeycomb coal would be something. Coal ballast was originally difficult to use, but when it is made into honeycomb coal, it can be used. And in his memory, there is no such thing as excessive odor of honeycomb coal.

Local honeycomb coal, it is impossible to be sulfide-free. Then there must have been some kind of treatment to achieve this effect.

Considering that the economic situation at that time was not very good, honeycomb coal could be popularized, it must be because it was cost-effective and the people could afford it. Then, no matter how it is handled, the cost must not be very high, otherwise it will not be promoted.

Moreover, since the technology of honeycomb coal can be rolled out across the country, the technical difficulties must not be high, at least there are no geographical restrictions.

Combining these premises, Li Mu made a judgment that this thing can be made, and it is not so difficult.

The shape of honeycomb coal, Li Mu remembers. So in the first step, he made a mold out. He is a high-level blacksmith himself, and there is no difficulty for him to build a mold.

If you have a mold, it's a material.

First of all, the coal is certain, and there are coal ballast that has been crushed. Then he tried to find a way to bond the coal together, in Li Mu's memory, the honeycomb coal was burned, it was the color of the yellow mud, and he couldn't see anything else, so he asked people to dig the yellow mud, thaw it, mix it with the coal ballast, and then put it in the mold to press it into honeycomb coal.

No experiment was successful once, and Li Mu never thought that it might be successful at one time. But it's that simple, it's all once. It's just that the residue after burning is a bit big, Li Mu adjusted the proportion again, increased the proportion of coal, reduced the proportion of yellow mud, changed it to seven to three, and the slag that was a little later broke when touched, and the effect was outstanding.

In Li Mu's impression, a very tricky problem was solved so easily, giving him the feeling of punching cotton. At the same time, he also understood why there was no honeycomb coal in the system, this thing was too simple, and a little older people could understand its composition. The most important thing is that after Li Mu graduated from university, honeycomb coal has basically disappeared, and it is put in the game, and young people rarely know it, just playing a game, there is no need to go to archaeology.

The problem was solved, but Li Mu was not satisfied with this.

Although the honeycomb coal he made was burned out, it was similar to what he had seen in his previous life, but the ignition of this honeycomb coal was a bit laborious and not so easy to burn. And the honeycomb coal in his memory can't be lit with cigarette butts, but the smoke and dust are very small. This shows that there must be something to suppress dust in honeycomb coal, and there are also substances specially used to ignite fire.

There is no reference to this, after Li Mu left the orphanage to go to school, he never saw honeycomb coal again.

So, it's a new round of experiments.

Li Mu found out all the relevant formulas in the system, copied them on paper, and then asked someone to take them back to the Ministry of Industry, and asked the Ministry of Industry, the Ministry of Internal Affairs, and the Ministry of Foreign Affairs to prepare materials according to the things listed on the list, and send them to Lantian County one by one.

Li Mu's list spread all over the country within two days. Although everyone doesn't know what the use of these things can be, as long as it is something that Li Mu uses, it is like being branded, it must be useful.

Useful things, just grab them.

In less than three days, the markets of Chang'an City and Luoyang City, and the things on Li Mu's list, have increased in price by about three times. The only thing that remains unchanged is coal, because coal, a civilian resource, is sold at a fixed price in winter, and it is not allowed to increase prices arbitrarily without the express text of the court.

……

After Sun Fujia returned to Chang'an, he spread the news of the cement factory. There is nothing to hide this, and he also got Li Mu's permission.

Coupled with the propaganda of Datang Daily, it immediately detonated public opinion.

"Do you know why Master Hou was able to cover the factory so quickly??"

"Who doesn't know, it's not cement?"

"Cement!" The speaker sighed and said; "What's it like, I really want to see it with my own eyes."

In the past half a month, the topic of cement has spread all over the streets and alleys, which has aroused the curiosity of the people.

First of all, the coal is certain, and there are coal ballast that has been crushed. Then he tried to find a way to bond the coal together, in Li Mu's memory, the honeycomb coal was burned, it was the color of the yellow mud, and he couldn't see anything else, so he asked people to dig the yellow mud, thaw it, mix it with the coal ballast, and then put it in the mold to press it into honeycomb coal.

No experiment was successful once, and Li Mu never thought that it might be successful at one time. But it's that simple, it's all once. It's just that the residue after burning is a bit big, Li Mu adjusted the proportion again, increased the proportion of coal, reduced the proportion of yellow mud, changed it to seven to three, and the slag that was a little later broke when touched, and the effect was outstanding.

In Li Mu's impression, a very tricky problem was solved so easily, giving him the feeling of punching cotton. At the same time, he also understood why there was no honeycomb coal in the system, this thing was too simple, and a little older people could understand its composition. The most important thing is that after Li Mu graduated from university, honeycomb coal has basically disappeared, and it is put in the game, and young people rarely know it, just playing a game, there is no need to go to archaeology.

The problem was solved, but Li Mu was not satisfied with this.

Although the honeycomb coal he made was burned out, it was similar to what he had seen in his previous life, but the ignition of this honeycomb coal was a bit laborious and not so easy to burn. And the honeycomb coal in his memory can't be lit with cigarette butts, but the smoke and dust are very small. This shows that there must be something to suppress dust in honeycomb coal, and there are also substances specially used to ignite fire.

There is no reference to this, after Li Mu left the orphanage to go to school, he never saw honeycomb coal again.

So, it's a new round of experiments.

Li Mu found out all the relevant formulas in the system, copied them on paper, and then asked someone to take them back to the Ministry of Industry, and asked the Ministry of Industry, the Ministry of Internal Affairs, and the Ministry of Foreign Affairs to prepare materials according to the things listed on the list, and send them to Lantian County one by one.

Li Mu's list spread all over the country within two days. Although everyone doesn't know what the use of these things can be, as long as it is something that Li Mu uses, it is like being branded, it must be useful.

Useful things, just grab them.

In less than three days, the markets of Chang'an City and Luoyang City, and the things on Li Mu's list, have increased in price by about three times. The only thing that remains unchanged is coal, because coal, a civilian resource, is sold at a fixed price in winter, and it is not allowed to increase prices arbitrarily without the express text of the court.

……

After Sun Fujia returned to Chang'an, he spread the news of the cement factory. There is nothing to hide this, and he also got Li Mu's permission.

Coupled with the propaganda of Datang Daily, it immediately detonated public opinion.

"Do you know why Master Hou was able to cover the factory so quickly??"

"Who doesn't know, it's not cement?"

"Cement!" The speaker sighed and said; "What's it like, I really want to see it with my own eyes."

In the past half a month, the topic of cement has spread all over the streets and alleys, which has aroused the curiosity of the people. Ah said loudly, big Assad, ad, ah, ada, yes

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