Tang Yun found that any normal person who spent time with Tang Jin would become not very normal. As if what he was seeing in front of his eyes, a group of people were stirring bags of gray flour in full swing, mixing sand and stones into the flour, while another group of people next to them worked together to bend the iron rods the thickness of children's arms and embed them into the side of the mountain wall, and from time to time they took out a drawing to discuss and adjust.

These people are naturally the people of Yulin County who came from the other side of the mountain after the tunnel was temporarily opened. To be honest, the first time Tang Yun saw them, he felt that their spirit was a little abnormal, or rather...... The excitement is too much. Do you dare to imagine a group of big men with an average height of 1.9 meters crying excitedly? Tang Yun said that he not only thought about it, but also directly skipped the step of thinking and became watching.

Sure enough, the follow-up operations of these people strengthened his thoughts. I saw that one by one, they were quite familiar but unfamiliar with the gray flour pulled to the side, chatting in amazement, and then the scene in front of them appeared.

Well, don't think that sentence is wrong, although familiar and strange are two completely opposite words, but there is nothing wrong with these two words being used to describe these people.

They were very curious and even a little cautious about the gray flour, as if they had never seen it before. But the actions of their removal and subsequent deployment seem to have been rehearsed countless times.

"Are you curious why I, the workers, don't know cement, but they can mix concrete very skillfully?" Tang Jin put one hand on the other's shoulder and asked with a show off on his face. It almost said on his face that he was about to ask me.

"Hmm!" Tang Yun nodded very unproductively. No wonder he was curious, it was just too strange for this scene. As for what Tang Jin meant by cement and concrete, he didn't delve into it, anyway, he still called it gray flour.

"Actually, it didn't matter, I told them the nature of the cement, the mixing ratio and the method before I came. They practiced countless times on their own with dirt during the time I blew up the mountain. So although it was the first time they came into contact with cement, they didn't have the slightest jerky mixing. ”

"You guy...... It's a monster, right? Tang Yun looked at this Tang Jin with a hellish expression. Of course, this is not because he let others do the exercises in advance, but his status in the eyes of the people of Yulin County. Because of the repeated practice of a requirement without even seeing the real thing, in addition to the due remuneration, the core of supporting these people is the influence of Tang Jin himself. Tang Yun really couldn't imagine what method could be used to make the people believe in every word the ruler said? But if you can really do it...... How terrible should such a country be?

Thinking like this, Tang Yun couldn't help but shudder, and suppressed the thoughts in his mind, one

The face looked curiously at the concrete in front of him that was gradually stirring and preparing to go up the wall.

"Does this thing really reinforce the mountain wall?"

Tang Jin knew that Tang Yun was deliberately changing the topic, but he didn't say much, how to gather the hearts of the people This is a secret unique to every ruler, although they are now in an alliance, there are two words in front of this alliance, and the two are still opponents in essence. Tell your opponent about your core secrets? Tang Jin wasn't so stupid.

"Do you know the paste? You can think of this thing as a construction paste. The frame is built with steel bars, filled with concrete, and when it is completely solidified, the concrete becomes as hard as stone, and the internal steel bars disperse the weight of the entire mountain, so stabilizing the tunnel is not a problem at all. Tang Jin said flatly.

Tang Yun was slightly stunned when he heard this, lowered his head and thought about it: "Then if you say so, isn't this thing very strong when used to build walls?" ”

Tang Jin glanced at him, as if he was looking at an idiot, "First of all, this thing itself is used for construction, and building walls is also construction; Secondly, the wall made of this thing cannot be pierced by muskets, do you say it is strong or not? ”

"This ......" Tang Yun obviously didn't expect this thing to be so strong, "Then this gray flour, no, cement, is it difficult to produce?" ”

Tang Jin shook his head, "It's not high, give me dozens of people, and I can burn a few hundred catties for you in a month." ”

The main difficulty of cement is in the formula and firing method, if you know both, it is not easy to make it alone, and its raw materials are also very common. If he didn't want to delay the time, Tang Jin would have burned it by himself, and he wouldn't have traveled thousands of miles from sweat.

"In that case, I ask why don't you sell cement? Even aside from the ordinary people building houses, the palace, the city wall, especially the city wall of the side plug, as long as it is replaced with this cement, the solidity will rise sharply, and this demand will definitely make us a lot of money! ”

Tang Jin smiled kindly when he heard this, and patted Tang Yun's shoulder, "In fact, if you simply make money, Master has something here that can make you a lot of money, but there are some things that you can't keep even if you take them out before you have enough strength." ”

Is it easier to burn cement or grow tobacco? The results speak for themselves. But why didn't Tang Jin make tobacco instead of putting cement that could also make a lot of money?

It's simple, the strength is not enough. Compared with tobacco, which only has medicinal and commercial value, cement is a strategic resource for people in this era. To build a city wall with this thing, unless a martial artist with the strength of a first-class master or above does it himself, he is afraid that he will not be able to cut it for a few days with bows and arrows and machetes alone.

Looking at it this way, cement is very profitable, even more profitable than tobacco to some extent, after all, this thing makes the money of the state. But it is because of this that the cement is ten thousand

Can't be sold.

This is the Tang Dynasty, not the modern era. A company has invented a material that can be called strategic, and it will do everything possible to protect it in a modern country, but in the Tang Dynasty, in this feudal era...... The person is killed, the formula is taken away, and the thing is done.

Someone will say a word about the imperial court, isn't it? No, and I dare not have. Will anyone avenge it? There may be, but these people are half underground and half in prison.

Therefore, before he has enough strength, Tang Jin will never expose this kind of strategic-level material too much. The last time he took the arquebus was for self-preservation, this time he wasn't stupid enough to make money with cement.

Straight to the point

After Tang Jin finished speaking, he turned his head and went down the mountain. Tunnel reinforcement is not something that can be completed in a day or two, before the blasting needs to be positioned by itself, but now the reinforcement is not needed, Tang Jin will not stay in this place to embarrass himself, but just come up regularly to check the situation.

After about a month, the reinforced concrete of the tunnel was laid and basically solidified, and the entire tunnel was completely completed. In addition, in order to facilitate the transportation up and down the mountain, Tang Jin also instructed the workers to make an animal lift, which only needs to use a mule to pull the transmission device to lift heavy objects through gears.

But even so, Tang Jin still didn't have the slightest happy expression on his face. It's not because there is something wrong with the tunnel, but Qin Hai has brought bad news, the county water well has been poisoned!

The first time he heard the news, Tang Jin thought of Fang Jieqing and Qin Hai's safety, and only relieved his mind after knowing that they were fine.

"Do you know who poisoned it?"

Qin Hai shook his head, "I don't know about this for the time being, but there are people in the city who are spreading rumors." The well water is poisonous because you are a bad star, and the only way to stop the poison can only be quelled by driving you out of the county. ”

Hearing this rumor, the corners of Tang Jin's mouth couldn't help twitching, he seemed to know who did it, "So, that spy, have you caught it?" ”

"I caught it yesterday, a total of five people are not from our county, waiting for you to go back and interrogate." Qin Haidao.

"So what are you waiting for? Hurry. With that, Tang Jin turned his head and went into the tunnel, and after walking a few steps, he realized that he seemed to have forgotten to ask an extremely important matter, "How many people are poisoned in the county?" How many people died? ”

"Uh...... There were quite a few poisoners, but no one died. The most poisoned ones are now only in a coma, and they have gradually improved with Langzhong's special care. In addition, you said before that tobacco has a detoxification effect, and we took it upon ourselves to take some for Lang Zhong to study, and this poisoning happened to be used, which is why no one died. Qin Hai said proudly.

"Well, well done. Quite prescient, so now let's see which retarded person framed me. ”

(To be continued)