Speaking of cement, Li Jiancheng has a book of "Basic Knowledge of Modern Cement Production", basically from raw materials to the flow and application of production technology, it is not difficult to make cement.

But this does not mean that there are no difficulties, in the case of modern cement, we usually only know that it is used to build houses and all cement looks almost the same, but in fact, the types and uses of cement are also extremely complex.

For example, 'Portland cement' (commonly known as Portland cement) is used in the ground, underground and in water, including structures subject to cyclic freeze-thaw cycles and projects that require high strength in the early stages. However, this cement is not suitable for large-volume concrete structures and works subject to seawater and chemical turbidity.

In addition, there are many such as aluminate cement, sulfoaluminate cement, iron-aluminate cement, pozzolanic cement, etc., the scope of these cement trials is different, some trial special needs, some trial water environment, etc., but to let these people in the Ming Dynasty understand these first have to give them some chemical physics courses, to take this kind of class, it is not a day or two can be understood.

So Li Jiancheng didn't expect them to do so much now, it was enough to make ordinary cement that could be used first, and he didn't give up in class slowly!

This time Li Jiancheng went out of the palace again, this time it was the Ministry of Industry, and the eunuch who led the way was called Chen Hong, this is a martial arts master to be Li Jiancheng's bodyguard, Wang An is not in his top class. This Chen Hong does look like a master, this guy is tall, white-skinned and deep-eyed, to be precise, he looks like a vampire, Li Jiancheng even suspects that he has European and American blood.

Shaking his head the scoundrel, Li Jiancheng came to the Ministry of Industry with such a bodyguard and Ling Xueji, and as soon as he arrived at the Ministry of Industry, he came to greet him with Wang Zuo, the secretary of the Ministry of Industry. The Ministry of Industry of the Ming Dynasty can be said to be the weakest of the six departments, because in this dynasty's style of valuing people and not things, logistics are not taken seriously, and their importance is only remembered when needed. In this era, the Ministry of Industry is just a group of workers, although Wang Zuo, the secretary of the Ministry of Industry, stands in the court and stands with the six departments, but in the eyes of others, he is still a craftsman leader!

So the emperor suddenly recruited a group of craftsmen, and after coming back, Wang Zuo understood this matter in detail, which made Wang Zuo attach great importance to it, what is the role of the Ministry of Industry, isn't it work? If it can meet the emperor's requirements, it will be a great achievement for the Ministry of Industry. Therefore, Wang Zuo, the cement project, came to watch it in person.

As soon as Li Jiancheng saw Wang Zuo, he said, "Isn't this Lord Shangshu Wang of the Ministry of Industry?" How did you come in person! ”

Wang Zuo said: "The micro-ministers are not the subordinates, how can your majesty not welcome the ministers!" ”

"Hehe, Lord Wang doesn't have to be polite! I've come to see what the cement and red bricks are all like! Li Jiancheng said with a smile.

Wang Zuo has also seen the extraordinaryness of this young emperor, in fact, not only Wang Zuo, after passing through the Yiyi on the city wall, no official treats this little emperor as a child, not because of the person behind his back who helps him make ideas, but the calm and unhurried style of doing things is also obvious to everyone. This kind of unchaotic bearing is exactly what a Ming monarch should have, so when no one thought that he could use his youth to bully him Li Jiancheng, everyone began to pay attention to this emperor. Wang Zuo naturally did not lose his rigor in the face of Li Jiancheng's hip-hop and laughter, he said: "I respectfully follow the entrustment of His Majesty, under the supervision of Weichen, the craftsmen have explored some doorways, and some results have been fired, and your Majesty is invited to inspect them!" ”

Li Jiancheng nodded and said, "Well, it's only been five days, take me to see the results!" ”

Wang Zuo took Li Jiancheng to see the results, during which he also commented on Ling Xue's suspicion, Li Jiancheng didn't let Wang An hide anything about Ling Xue's suspicion by his side, so everyone basically knew the truth. Ling Xue is definitely a talented woman in the eyes of most righteous people, and now that she is sure to be loyal and resolute, she admitted that this is a 'righteous' woman some time ago! So no one said anything, although in ancient China it was instigated that women were virtuous if they were not talented, but there were many talented women since ancient times, and there were many talented women who attracted the applause of scholars. Now that Wang Zuo saw Ling Xue suspicious, looking at her appearance, Wang Zuo knew that Emperor Lu Dao took her with great connotation......

Wang Zuo took Li Jiancheng to a pool and said, "Your Majesty, this is a pool built with the first batch of fired cement, and some of it is slightly seeping!" In the second batch, a pool here is basically watertight! The cement provided by His Majesty is really godly, and it is the first time for Weichen to see such an efficient and convenient material. Weichen tried to make a reinforced cement prefabricated slab according to what His Majesty said, it is really very hard, and its strength even exceeds that of general quarrying, and the application of quarrying is also determined according to the size of the stone. ”

Li Jiancheng listened to him while watching the two pools, the first pool of cement Li Jiancheng found that the color was slightly black, and the second was similar to modern industrial cement, which made Li Jiancheng surprised by the learning and progress ability of the Ming Dynasty people, which also made him feel excited, and then Li Jiancheng looked at the prefabricated slab made of reinforced water conservancy concrete, this is the key! Li Jiancheng looked at it and touched it, as if there was no problem, and then he said: "Ask someone to take a hammer to smash it, I want to see the strength!" ”

Wang Zuo nodded and called a worker with a hammer, it seemed that he had been prepared, it was a very strong man, the man took a big hammer and smashed the prefabricated plate seven or eight times before the prefabricated plate cracked, and this strength has reached the range of Li Jiancheng's approval.

Li Jiancheng was very satisfied and said to Wang Zuo: "Not bad! Good job, Wang, I appreciate you very much! You must be very attentive to the point where you can do it in five days, say, what reward do you want, I will not be stingy! ”

Li Jiancheng suddenly said 'Lao Wang' made Wang Zuo a little crying and laughing, Wang Zuo said: "What Your Majesty said, the minister is just loyal to the king's life and diligent in the king's affairs, and he doesn't need any reward!" ”

Li Jiancheng patted Wang Zuo's shoulder and said, "Yes, yes, Lao Wang is doing a good job, you are the first minister I look at, and I haven't made friends with any of the other ministers!" In the future, I can't guarantee that your Ministry of Industry will definitely carry it forward, as long as you work hard, I won't treat you badly! ”

Wang Zuo heard this, and suddenly felt that his eyes were a little moist, he was a head of the Ministry of Industry in the court, but he was not even as good as a royal history among the six departments and nine secretaries in the court, and now he was so moved by the emperor's appreciation that he was so moved that he burst into tears, and he immediately knelt down and said: "Weichen will definitely be loyal and conscientious to serve His Majesty!" ”

In fact, Li Jianchen also understood that his biggest supporters in the future must be some working class people, he was going to set off the industrial revolution, as the emperor of industry, the workers did not support him, who supported him, so now Li Jiancheng is very necessary to win over the head of the working class!

Li Jiancheng helped him up, patted Wang Zuo's shoulder again, and said, "Take some finished cement and show me!" ”

Wang Zuo shouted again, a waiter came up with a plate, Li Jiancheng took a look at this is a young man should be Wang Zuo's hand, a third-grade official, but mixed in the Ministry of Industry, these third-grade officials are not as good as a six-grade in the household department, he is holding a tray with a pinch of cement on it, and a white silk scarf! This made Li Jiancheng speechless, if you want to engage in such a high-end business, isn't this wiping your ass with satin? Li Jiancheng glued the cement with his hand, and felt that there were still some hard particles that were not delicate enough, it seemed that it was not enough to crush this, and he had to find a way, such cement was easy to loosen, and if it was paired with sand and gravel, the effect would be greatly reduced, which would not meet Li Jiancheng's requirements.

So Li Jiancheng said directly: "Crushing is not enough, I don't know how to make the water turbine when I made a hard brushing machine!" You go to the workers in the hard brush yard to do it, I am instructing you to transform it and make it into a roller, you find a place with good hydraulics to build a cement factory, I will need a lot of cement. I will let Wang An allocate the money to you, no need to find the household department! ”

Wang Zuo's eyes lit up when he heard this, and the emperor directly gave money and did not go to the household department, which was a great benefit to his ministry, Wang Zuo said: "The water turbine Weichen said by His Majesty has seen it is indeed extraordinary, and if it is changed to a roller, it will be extraordinary!" ”

Li Jiancheng smiled, this guy is quite knowledgeable, he continued: "By the way, I haven't asked yet, how much does it cost to produce a bag of cement!" ”

Wang Zuo immediately replied: "The production of this cement is mainly lime clay and other things, this only needs manpower, in addition to spending more effort on crushed powder... However, now the application of the water turbine will be greatly economical, so the main cost is spent on firing, Weichen calculated that if it is mass production, the cost of each bag of cement is about 15 yuan! ”

15 Wenqian, Li Jiancheng thought about it for a while, this is a lot, with the high-tech class workers of the Ming Dynasty, firewood and soap: The people of the Ming Dynasty have the obligation to serve the country, but the service is paid. When it was the turn of the officer, he was assigned to the followers of the officials, and the firewood soap was to buy firewood to boil water and do chores. The annual income is 20 taels, which is converted into a modern amount of about 15,000 yuan, and the state of the Yuan and Ming dynasties stipulates that the Qipin main hall can have four firewood soap subordinates, two county members, two main books, and one canonical history; Each of the above officials has a groom, and the state pays the salary.

The groom's salary is higher, and the groom drives horses for government civil servants and uses them on business trips. The annual income is 40 taels. The annual income is about 30,000 yuan.

Pig killer: Fan Jin's father-in-law, Hu Butcher, said to the poor Xiucai Fan Jin, "It is serious to find a few taels of silver every year to feed your old and immortal wife and your wife." You asked me to borrow a plate, I killed a pig a day, and I couldn't make any money, so I threw all the money with you into the water, and called my family to swallow the northwest wind! —"The Outer History of Confucianism". One penny a day, 3 taels a month, 36 taels a year, and the income from killing pigs is close to that of the groom.

This is the general income of the Ming Dynasty people in addition to the peasants, the peasants' income is better, the peasants' people give 15 acres of land, 2 acres of vegetable land. 'Assuming that the ancient cultivation level is only 1/2 or 2/3 of the modern level, then the peasants can earn about 250 or 350 catties of rice per mu, according to 300 catties, the south will harvest two seasons a year, and the north will harvest one season a year, if the harvest year is diligent, the average gross income of farmers in the south is about 15,000, and the per capita gross income of farmers in the north is about seven or eight thousand, excluding farm tools, fertilizers, water conservancy expenses, and mu tax (the Ming Dynasty collected a bucket of tax per mu, about 20 catties of rice), if a family of seven or eight people does it, it is not a problem to build a high-quality brick and tile courtyard house in a few years.

Based on the stable currency unit of the Ming Dynasty, one tael of silver is ten yuan, and one money is equal to one hundred Wen, so the average daily income of these people in the Ming Dynasty is about five or six Wen, but Li Jiancheng's market is of course not where these people are, and these people have an income of up to one hundred Wen a day, but it is also a minority after all. Li Jiancheng's market is still in the commercial group, so Li Jiancheng has no problem selling a bag of cement for 40 to 50 yuan. Not to mention that Li Jiancheng has a black heart, he is about to sell for 300% of the profit, joking that this is a high-end material, what is more expensive, and when Li Jiancheng's series of projects are built, he is afraid that the reputation of cement will not be able to beat up! After the level increases, the cost is reduced, and it is not too late to reduce the price, this money must be earned! He, Li Jiancheng, only now knows that he wants money everywhere!