When Tang Zheng returned to Cheng's house, he saw Cheng Pu talking to Grandpa Cheng. Tang Zheng stepped forward and saluted Grandpa Cheng, and then said to Cheng Pu: "Big brother is back." Cheng Pu said to Tang Zheng with a smile: "I heard that the little brother has worried a lot about the villagers in the past few days, and I have thanked the little brother for the elder brother first." "The eldest brother is polite, if it weren't for the life-saving grace of the eldest brother that day, there would be no younger brother today, maybe the younger brother would have entered the belly of the beast long ago." Tang Zheng waved his hand to Cheng Pu and said. "What's the important thing for the eldest brother to come back today?" Cheng Pu usually rarely goes home and lives in the county seat. "Brother Hu came to me today and said that the village was going to recruit a group of homeless people. I wanted to come back and see what happened when I heard him say it, but I didn't expect that my little brother still had such skills, which surprised my brother. Cheng Pu pretended to be surprised. The eldest brother laughed, what can the younger brother do. Tang Zheng shook his head again and again. Okay, we were talking about you just now, and you'll be back. Now that there are enough people, how are you measuring, Tang boy. Grandpa Cheng said. The boy has already measured the number of canals in the field, but the one to the barren slope is more difficult, and the boy plans to bring water from the mountains on the other side of the river, but he will build a canal on the river. "Build a canal from the river? How to repair it, and how much human and financial resources are needed? Cheng Pu was really surprised this time.

"If it's like building a bridge, our village can't afford it, not to mention the glutinous rice needed to build the bridge, it's not a few." Grandpa Cheng said. "Boy, besides, the river is also 5.6 zhang wide, which is also not a small difficulty." "Boy, let's find a way to see if there is anything else that can replace glutinous rice." Tang Zheng remembered that in later generations, this place was famous for its mineral resources, and there was no reason why there would not even be limestone and coal for burning cement. Cheng Pu looked at Tang Zheng and frowned: "If there is really no way, use manpower to irrigate, it has been irrigated for all these years, and then we will slowly think of a way." Tang Zheng can't tell everyone what he thinks in his heart, the end of the year will be in a few months, that is, 184 is coming, Tang Zheng doesn't know the specific time of the Yellow Turban Uprising, but he has to prepare for the worst, in ancient times, if there is no right in his hands, no matter how much wealth and food are pigs to be slaughtered in the eyes of those in power. Not to mention the troubled times that are coming. Tang Zheng didn't want his hard-earned results to cheapen others. Tang Zheng's idea is to let the people eat their stomachs first, and then train an iron army, if they can't even eat their stomachs, let alone train and fight. In this way, you can protect yourself and the people you want to protect in the next troubled times. Grandpa Cheng looked at Tang Zheng quietly in a daze, knowing that he was thinking about things, and didn't bother, he beckoned to Cheng Pu and went out.

The route of the canal has been planned, and the displaced people have been recruited. Tang Zheng commanded everyone to start construction. In fact, Tang Zheng didn't have anything to do, just dig a ditch according to the markers he made before. Tang Zheng went to the construction site by the river to take a look, and the workload by the river was larger, not only to clean up the silt, but also to repair the river embankment. The cleared sludge cannot be poured directly into the field now, and the grain in the field has not yet been harvested, and the sludge can only be poured into it after harvesting. In this way, Tang Zheng walked around the construction site, what was wrong with what he was doing, and then he said that more than ten days had passed, and when Tang Zheng was about to check the progress of digging the canal after inspecting the riverside construction site that day, Cheng Hu ran over to find Tang Zheng in a hurry, and said breathlessly: "Brother Tang, when digging the canal just now, Erniu dug out the kind of black stone you said." "Take me to see what you dug up there." Tang Zheng looked very excited.

The black stone is coal, Tang Zheng asked Cheng Grandpa last time, he said that he had never seen it, and after knowing the role of coal, he asked people to look for it, but he didn't find it. You must know that the mineral resources here are very rich in future generations, and it stands to reason that there should be no now, but I didn't expect that the canal was inadvertently dug out today. With coal, cement can be fired. When Tang Zheng and Cheng Hu arrived, the soil layer had been dug up, revealing the black coal layer inside. Tang Zheng walked over and picked up a piece and looked at it, the quality was not bad, it was anthracite. Since the coal canal has been dug, it is impossible to pass through it. Tang Zheng asked Cheng Hu to take people to dig canals in other places first, and he went back to find Grandpa Cheng.

"Boy, you said you dug up the coal you said by digging a ditch? Are you sure that kind of stone can burn? "Grandpa Cheng was very surprised, hateful and uncertain." Grandpa Cheng, who can burn, searched for so many places before and didn't find it, but today he dug up the canal inadvertently. With coal, after building bridges and cities, you don't need glutinous rice juice, the kid knows that a thing burned out of coal can replace glutinous rice juice, and if you use it to build bridges and pave roads, the bridge will be solid and strong, and the road surface will be smooth, even if it rains, there is no soil on the road. Used to build cities, the walls are impregnable. This thing that is fired from coal is called cement. Tang Zheng said the most common basic applications of cement, just to let them know the importance of coal and cement.

"And when you have coal, you don't have to burn charcoal, and coal is better than charcoal. Coal can be used for cooking, and coal can also be used for heating. If we burn coal into something called coke, we can make better iron. "Boy, is that thing really as good as you say? If what you say is true, why doesn't anyone know? "Grandpa Cheng has an expression that I don't read much, don't lie to me." The kid doesn't know how he knows, he only knows that he understands these things but doesn't understand how he knows them, maybe the kid forgot some parts of it because of his head injury. Tang Zheng didn't know how to explain that he knew this, he couldn't tell others that he was from the next life, and no one believed that he might be regarded as a schizophrenic. So I had to prevaricate with the fact that I had been injured on the head. "I'm not going to ask you how you know this, but are you sure it's really possible?" Grandpa Cheng still chose to believe Tang Zheng. "Really, coal and cement don't stop there, and there will be a wider range of uses in the future." "Okay, old man, I'll arrange for someone to give you what you need to do." Grandpa Cheng said with a big wave of his hand.

"Grandpa, you still need to build a cement kiln to burn cement, and building a cement kiln can't be repaired in a day or two. At present, we will collect more coal first, and once the cement kiln is repaired, the demand for coal will be great. "Although Tang Zheng can't directly produce modern cement, it's no problem to get some soil cement, and several of his former business partners are producing cement, and the formula of cement is basically known." It seems that Huzi will have to go to the county seat tomorrow and recruit another group of homeless people. Hey, now the world is getting more and more chaotic, and there are more and more displaced people. Grandpa Cheng frowned. Tang Zheng didn't know how to answer, according to the development of history, although the Yellow Turban Rebellion failed in the end, it also accelerated the fall of the Eastern Han Dynasty. This was followed by an even more chaotic warlord division. If you want to survive in this era of human life, you must have enough strength, Tang Zheng secretly clenched his fists. Grandpa Cheng looked at Tang Zheng and saw that he seemed to be thinking about anything, so he turned around and left silently.

Coal mines have been found, and limestone and clay for cement production can be found everywhere, and now waiting for the cement kilns to be repaired. Tang Zheng went out early in the morning and walked outside for an afternoon, but he didn't choose the address to repair the cement kiln, not that there was no place to repair, but the land near the village was arable land, Tang Zheng decided to repair the cement kiln near the coal mine, and the specific distribution area of the coal could only be built.

Today is the day of harvest, under the leadership of Grandpa Li Changcheng, everyone began a busy autumn harvest, although there has been no rain for a long time in the drought this year, but the harvest of this year's crops in the mountain village by the river is also OK. After the autumn harvest, Tang Zheng's fertilizer plan will be implemented, other preparations have been made, and the cement has been burned several kilns, but fortunately, Tang Zheng's luck is good, and he only tried twice to successfully burn the cement. When the cement was just burned, Grandpa Cheng's mouth opened wide, and since then he has become more and more convinced that Tang Zheng can increase the output of grain. Tang Zheng looked at the busy people in the field and felt that his efforts during this time were worth it. The autumn harvest will last for about ten days, but fortunately, 400 displaced people have been recruited this year, otherwise it will take more than a month to harvest the grain in the fields with the strength of more than 200 people from the village. The displaced people also behaved very well, they are all honest farmers, they have all lost their land due to the disaster, and they are willing to work hard as long as they are fed. Tang Zheng also asked Grandpa Cheng to purchase grain in a planned way, and now the village's grain stock is enough for the whole village to eat for half a year, and it is still being purchased one after another.

The busy autumn harvest has passed, and Tang Zheng's canal and fertilizer plan has been basically completed. The 400 displaced people recruited were also arranged by Tang Zheng to the mine, which made the coal save a lot during this time. Tang Zheng decided to build another coking coal kiln, and coking coal is widely used, the most basic of which is to make steel. In this era, steelmaking is generally burned charcoal, and the temperature of charcoal burning is not high enough, so it can't make good steel. The principle of coking is also very simple, Tang Zheng was the owner of a coal mine in his previous life, and he came to this world because he went to buy mining equipment and invite guests to dinner. Therefore, he has a good understanding of coal, and as for coking, there are no technical problems. Tang Zheng went to find a place near the coal mine and built a coking coal kiln.

Now that everything is on the right track, there is nothing Tang Zheng can do except go to the mine occasionally. Tang Zheng decided to start exercising himself, and the most important thing was to practice his equestrian skills. In this era when there are no planes, trains, and automobiles, if you don't want to rely on your legs, in addition to the carriage, you generally only have to ride a horse, the reason why Tang Zheng decided to learn to ride a horse is not for the convenience of going out, but for a better life, and soon there will be the Yellow Turban Rebellion, followed by an even more chaotic warlord separatism, full of wars and bandits. When you learn to run for your life on horseback, you will definitely run faster than someone who can't ride a horse. Tang Zheng also did not patronize to learn equestrianism, except for 5 kilometers of cross-country running in the morning and evening, he used all the training methods he learned in military training in later generations. Except for the hard work at the beginning, there will be nothing after perseverance. After this period of training, Tang Zheng is not like when he first arrived here, with fine skin and tender flesh, but now he is more like a person of this era. The skin is not as white as before, it has become wheat-colored, and the bones of the body are stronger than before, although the strength is not as great as that of the person at this time, but it is also much better than the original self. Grandpa Cheng saw everything in his eyes during this time, and he didn't say anything, at first he thought that Tang Zheng was idle and having nothing to do, but his eyes widened when he saw Tang Zheng's changes. Maybe this kid has a different idea in his heart, and this is also the first time that Grandpa Cheng has faced Tang Zheng squarely.