Early the next morning, Liu Hao and a group of friends went out of the city.

When he arrived at the camp, Gao Shi gathered the group of knights and led everyone to beat their horses and go west. Liu Hao looked at the backs of everyone who were gone, and silently prayed in his heart that his wife and children would return safely. After living for two lifetimes, this is the first time to have a child, it would be false to say that he is not excited, his heart wandered in excitement and worry almost all night last night, maybe people who are fathers for the first time will be like this.

Yan Zhenqing stood beside Liu Hao and said: "Zhicai don't worry, I believe that Mrs. Lilac will arrive in Luoyang in a few days, and then Zhicai can enjoy his family." ”

Xiao Shiyilang smiled: "The child hasn't been seen yet, didn't Xiaoyaozi teach last night, I am afraid that the child was born in early winter." However, Zhicai personally cooked for Mrs. Lilac is certain. It's hard for me to try that craft on weekdays. ”

Chen Shimei patted him: "What's so difficult, you give Zhicai a child, and Zhicai will definitely cook for you by himself." At that time, Wen Po doesn't need to invite others, she can do it for her brother. ”

Liu Hao waved his hand at the two birdmen who were out of tune: "You two go aside." ”

After speaking, Liu Hao bowed his hand to Yan Zhenqing: "In the past few days, the safety of the camp has been bothered, please pay more attention to Brother Qingchen." ”

Yan Zhenqing clasped his fists with both hands and said, "Dare not obey your fate!" ”

Liu Hao already knew about Yan Zhenqing's life when he was learning calligraphy in his previous life, and he was the only one of these friends who stayed by the emperor's side. Therefore, Liu Hao has always hoped that Yan Zhenqing will be an important minister of the imperial court who is allowed to be literary and martial. In the Tang Dynasty, it was not casual to talk about the generals, but it was really necessary to stay in the barracks and command and dispatch handy.

After everyone said goodbye to Yan Zhenqing, they rode in the direction of the cement workshop. The cement workshop has now been expanded twice and several kilns have been added. The brick kiln next to the cement workshop also has red bricks, and now Liu Hao and a few people are going to see the expansion of the brick kiln.

After arriving at the cement workshop, Liu Hao found that the cement workshop was paved with concrete from the courtyard wall to the ground, which was extremely convenient for walking and transportation. The steps inside the entire workshop are also made of cement, and even the walls are painted with a layer of cement.

Li Bai and the others couldn't help but gasp, this is too extravagant. Liu Hao smiled secretly in his heart, what is this, when the cement poured high-rise building is completed, you will be surprised.

The principal here was arranged by Liu San, who is in his thirties and is a very pragmatic person. When he saw Liu Hao, he asked directly: "The red bricks have come out of the two kilns, and the young master is here." ”

There was not even a polite or greeting when they met, which made a few people next to Liu Hao shake their heads, is this what it should be like to see the head of the family?

Liu Hao smiled at them: "Everyone, what I like the most is that he is pragmatic!" That's the kind of person who does the real thing. If it's a bombastic person, I will never use it. What a waste of time. ”

Xiao Shiyi Lang glared at Liu Hao and said, "Zhicai is talking about being a brother, isn't he?" ”

Liu Hao put his arm around his shoulders and said, "Make the best use of things, make the best use of people." That's the standard by which I employ people. Although Brother Xiao is not proficient in martial arts, his kung fu is the best in my Tang Dynasty, so Brother Xiao is the best person to tell a story. ”

Xiao Shiyi Lang was stunned for a moment and said, "Why don't you think you're complimenting?" ”

Du Fu looked at him with a wicked smile: "What do you say?" ”

While they were laughing, they passed a doorway, and suddenly a small house made of red bricks suddenly appeared in front of them. Liu Hao immediately asked the steward: "You built this house?" ”

The steward nodded: "After the red bricks came out of the kiln, everyone discussed whether to try to build a house according to what the young master said, but they didn't expect to use the wall building method that the young master said at that time to make the house." ”

Liu Hao walked to the side of the house, picked at the filling in the brick joint, and asked in disbelief: "Lime mortar?" ”

The steward smiled and said, "It's lime mortar." Originally, we thought that it was good to use pure cement, but it was too easy to coagulate, and the walls were cracked. At that time, a bold master mixed river sand with cement and water to stir it, and the result was surprisingly good. ”

Liu Hao sighed and said: "If lime can be produced in large quantities, it is the real lime mortar mixed with lime." But you can think of using river sand, and it's a great achievement. ”

After saying that, Liu Hao sighed in his heart, who said that the ancients had bad brains? From the use of cement, it can be seen that the thinking of the ancients was broader than that of those in later generations. Just building a small house with the mentality of trying it out can create lime mortar, which was absolutely not seen in previous lives. I vaguely remember that my father said in my previous life that cement was in the countryside, and it was not until the seventies and eighties that the market was opened, and everyone at that time did not think that cement was stronger than yellow mud.

And the people of the Tang Dynasty, they not only did not reject cement, but also learned to use it.

Liu Hao followed the steward to the red brick cave, and he asked curiously, "How is it done inside?" This requires refractory bricks. ”

The steward scratched his head and said embarrassedly: "At that time, it was the first time to make bricks in the cement kiln, and after a long fire, the bricks inside were burned into glass. Originally, I thought it was useless, but who knew that this masonry looked ugly, and it was actually very fire-resistant. It's okay to burn it. A few days ago, the people from the Bingfang came to say that they were going to build a steelmaking kiln, and they transported a lot of them, saying that the effect was very good. ”

Liu Hao was shocked again, he didn't expect that ordinary Datang craftsmen would have such a high level of understanding, could it be that quality education is like this, so that people can draw inferences? Liu Hao thought of the Chinese people in later generations, if the exam alone, the Chinese can single-handedly challenge the entire universe. But when it comes to practice or invention, it is a clumsy calculation. Even variety shows on TV need to buy foreign copyrights.

Li Bai walked to the front of the brick embryo drying outside the brick kiln, picked up a piece and looked left and right: "This is obviously a very common yellow mud, why does it become a strong and durable red brick after calcination?" ”

The steward of the kiln said: "This kind of yellow mud is enough, although it can be made if you change the cement, it is easy to break up." But the truth in this, the people of the entire brick kiln can't say it, this is all said by the young master of my family. ”

Li Hong, the prince, became a curious baby at this time, and pulled Liu Hao and asked: "Uncle must know the truth in this, say it quickly, I am curious." ”

Liu Hao smiled: "You don't understand it, forget it." ”

Seeing that everyone looked at him in disbelief, Liu Hao continued: "Does the element know? Can you name how many elements there are in nature? Do you know the chemistry of the elements? ”

Everyone was confused when they heard this, Chen Shimei squatted aside and said: "Every time I am with Zhicai, I feel that I am a naughty boy who does not agree with the world. What is this element? What is chemistry? ”

Liu Hao looked at everyone proudly: "Say a simple one." Brother Xiao, borrow the lime on your body. ”

Xiao Shiyi Lang didn't know why, so he immediately took out a large bag in his arms. Liu Hao instructed the craftsman next to him: "Find two clean bowls, one of which is filled with water." ”

When the water came over, Liu Hao pinched some lime and sprinkled it in the water, and then stirred it. After the water was clear, Liu Hao carefully poured the water into another bowl. After being busy, Liu Hao asked someone to bring a bamboo pipe.

He placed the bowl on a table and said, "See if the water is clear." ”

The crowd looked at it and said, "It's crystal clear." ”

Liu Hao handed the bamboo pipe to Li Hong: "Blow it in the water." ”

Li Hong listened, and took a bamboo pipe into the water and blew it, and the water inside gradually became turbid. The thing immediately threw away the bamboo pipe, and his lips trembled: "Auntie······ Uncle, this ······ What's going on? ”

The others next to him were also taken aback, and they didn't understand what this reasoned about.

Xiao Shiyi Lang shouted: "Your Highness, it can't be that the turbidity in your body is too much, right?" These words made Li Hong tremble.

Liu Hao kicked Xiao Shiyilang: "Don't guess, it's just a chemical reaction." In fact, there are many phenomena in life that are chemical reactions, such as food spoilage, metal rusting, and brine dotting tofu. There are many others, as long as you pay attention, life is full of learning. ”

Everyone bowed their heads and was silent, only Li Bai muttered: "Life is full of learning, this is good." As long as you put your heart into life, you will learn everywhere. Don't say anything else, but if you pay careful attention to this cement kiln and brick kiln, the truth in this is not something that can be explained in one or two sentences. Zhicai, Brother Wei is now looking forward to the university you mentioned! ”

Liu Hao didn't answer, but looked at the steward and asked, "Where is the right place to build a brick kiln?" ”

The steward lowered his head and thought for a while and said: "Next to Luoshui outside Luoyang City, it is convenient to use water, and the yellow mud in the river beach can be used casually, and it is easy to transport." ”

Liu Hao nodded: "Since this is the case, then I will buy a piece of land by Luoshui, so that I can burn a brick kiln." ”

After speaking, Liu Hao looked at a dry birdman and asked, "Are you interested in this red brick?" If you are interested, you can do it although, if you want to, you can do it, >you can do it, you want to

When this group of people heard this, their eyes lit up: "What Zhicai said is true?" ”

Liu Hao nodded: "There may be big water in Luoyang next year, so the more this kind of red brick house is built, the better." ”

Then Liu Hao told the steward about the practice of prefabricated slabs and cement beams, but now there are too few steel bars, he just asked the steward to do a few for his own use, in case the bridge collapses or something, that thing is better than wood.

After Liu Hao encouraged the craftsmen of the entire workshop, he let the others go back, and he rode his horse in the other direction.

After jolting on the horse for more than an hour, Liu Hao saw an inconspicuous courtyard dotted among the places near the mountains and rivers.

Approaching, Liu Hao dismounted and patted the door rhythmically a few times, and after a while, a subordinate's head poked out: "This Langjun, I don't know what happened here?" ”

Liu Hao smiled and said, "The fish in the river in the west of the city suddenly swooped out last night. ”

This frightened people looked confused: "What are you doing looking for our house?" ”

Liu Hao made a Taoist gesture: "Come and find the master who makes fish." ”

At this time, the person looked Liu Hao up and down: "I don't know what Lang Jun asked my master to do?" ”

Liu Hao changed his gesture: "A hundred catties of golden carp!" ”