Zhou Ao struggled until the next day, and when he arrived at the yamen, the first thing he encountered was the ridicule of Gong Cao Shi Lanluo.

"Captain Zhou, didn't you go back very early yesterday, and you didn't work as an errand in the yamen, why did you stay up late, look at your eyes, bloodshot spread, this is hurting, you should pay attention."

Zhou Ao listened, smiled bitterly, and said vaguely: "When I went back yesterday, I thought about the recent things until late at night, because I was not energetic. ”

Lan Luo smiled: "It's not a loss to be too close to someone, this work is done with heart, I went back yesterday, and I drank with my insider, but I am not as upset as you." ”

Zhou Ao praised his people for being quite comfortable, and he was yearning for my generation.

Lan Luo was also smug, nodded and left.

As soon as the others left, Zhou Ao looked at the colleagues and subordinates around him, and noticed the tense atmosphere in this yamen, and unconsciously, it actually dissipated a lot.

Take Lan Luo as an example, when Chen Zhi first came, this person also had a whisper, and later there were a few twists and turns, and the integration between Chen Zhi's team has always been estranged, and then there was the spread of the war in northern Xinjiang, the entire Dai County, from top to bottom, was almost frightened, Lan Luo was no exception, he had already become a frightened bird, if he met Zhou Ao before, the two sides nodded at most, where would there be such relaxed words?

"After breaking the Xianbei people, Taishou has many means to calm down several conflicts in the city, and even warn a few families, deter the big clans, and make the city much more peaceful, so these family scholars feel that Taishou is enough to defend Daijun, so they are not as worried as they were original, and at the same time, they are more at home."

Zhou Ao understood the reason, so it was even more difficult to make a choice in his heart.

In the previous four letters, there were warnings from former colleagues, advice from close friends, and even the officials of the big clans who had only general friends in the past, throwing olive branches to him, which inevitably shook his heart slightly.

In fact, simply looking at the current situation in Daijun, Zhou Ao will also be full of confidence and enthusiasm, but yesterday's few letters just confirmed that a new crisis is brewing in the court behind it.

Compared with the war situation in northern Xinjiang, it seems that there is no bloody wind and rain, and there is no Jin Ge Iron Horse, but in fact, it is more dangerous, one is not good, that is, the abyss, and the catastrophe will not be recovered.

In such a situation, even Zhou Ao would inevitably mumble in his heart, but since he dared to give up the foundation of Luoyang and follow Chen Zhi here, this will is extraordinary, and as he walked, he slowly had ideas.

At this time, Liu Bao, the county leader, came from the front, saw Zhou Ao, and came and said, "Zhou Duwei, Taishou is looking for you." ”

"It just so happens that I also have something to report to Taishou." When Zhou Ao heard this, he followed Liu Bao over.

Chen Zhi was not in the usual place where he usually handled official business, but in a side room behind the yamen.

After the two arrived, Liu Bao knocked on the door first, and after going in to report, Zhou Ao followed and walked in.

The furnishings in the room are ordinary, but you can smell a faint fragrance, there is a curling green smoke wafting in it, and you can see a small incense burner on the table.

There were two people sitting on either side of the table, and it was Chen Zhi and Ge Hong's disciple and nephew Ge Lu.

Seeing Zhou Ao come in, Chen Zhi nodded slightly, pointed to a chair next to him, and asked Zhou Ao to sit down first and listen to the two talk, while Liu Bao left first after greeting, he still had a lot of things to deal with.

Zhou Ao sat down, didn't say anything, held his breath, and quietly listened to the conversation between Chen Zhi and Ge Lu.

Zhou Ao actually doesn't know much about Ge Lu, but he has been famous for a long time about Ge Hong behind Ge Lu, so he also respects Ge Lu a lot, and he also knows that not long ago, Chen Zhi also gave Ge Lu a task to take a few people out to explore mineral deposits.

Chen Zhi did not deliberately block this news, but the people who initially investigated knew about the salt and iron politics of the imperial court, so they acted quite carefully and did not spread it on a large scale.

However, since it is prospecting and it is within the scope of Dai County, it is inevitable that sometimes it is necessary to use manpower and material resources, and even mobilize some equipment, and after a long time, it is not a secret in bureaucratic circles.

It's just that a while ago, because of the war and the invasion of the Xianbei tribe, where else could be taken care of inside and outside the city, no one paid too much attention to it, and Zhou Ao was the same, but now when he heard it, he realized that Chen Zhi seemed to attach great importance to it.

Na Ge Lu was not polite, took a sip of tea, and went straight to the point: "Taishou, there are indeed many mineral deposits buried in this county, mainly coal mines, and also a lot of iron ores. ”

Chen Zhi said: "Dao Chief, but it doesn't hurt to say it, when I asked a few people to go prospecting, I made it very clear, if there is anything needed, just mention it, I will arrange it one by one." ”

"Then the poor Dao is welcome," Ge Lu smiled, and said so, but looking at what he meant, he didn't intend to be polite from the beginning, "I heard that Taishou has a descendant of the ink in his hand, so it is better to divide one person to come over with me, so that he can follow the vein of the mineral deposit, draw a circle chart below, and measure it." ”

Chen Zhi nodded and said directly: "This is the right thing, I will arrange it later." ”

Ge Lu smiled: "That's good, the few people who Taishou handed over to me before, there are people who are good at measuring, and they have also drawn pictures, but they are not accurate, and he will measure them by the side, and then let the ink man write, then there is no worry!" ”

The New Han Dynasty inherited the measurement of the two Han Dynasty, and it was recorded in the "Chronicles of the Law": "The one who is in the middle of the rice in the valley is the breadth of one millet, the degree is ninety points, and the length of the yellow bell." One is ten, ten is an inch, and ten inches is a ruler. ”

And Han Dynasty mining, after more than 1,000 years of development, naturally has a set of mature system, and measurement is the top priority, "Nine Chapters of Arithmetic", there are examples of measuring mountain height and depth of the well, and at this time, people have been able to use congruent, similar triangles of equality, proportion for indirect measurement, so as to assist the construction of mines.

If you want to run for a long time and be relatively safe, topographic maps, structural maps and distribution maps are all indispensable, and who is better at this than the Mojia substitution?

After getting Chen Zhi's promise, Ge Lu was very satisfied, he was also very interested in this prospecting, which could not only be put into practice, but also helpful to Chen Zhi and reflect his own value, so this is a very pleasant task, and the process is a little bitter, but it is always bitter as the years when he gave Ge Hong as a furnace boy.

Don't bear it, the peculiar talisman seal that Chen Zhi handed over to them is even more mysterious, which makes Ge Lu care about it very much.

In fact, this prospecting will not be very smooth, even if Chen Zhi has the memory of later generations, but after all, he does not know the specific location, and he does not know how deep the mine is buried.

Based on what Ge Lu learned, in his opinion, if what Chen Zhi said was true, there were really mineral deposits around Daijun, and according to their manpower and finding methods, it would take two or three years, and the luck was a little worse, and it would not be unexpected for three or five years.

But this speed is already fast in Ge Lu's opinion, after all, no one has noticed the mineral deposits here in the past few hundred or thousands of years, and you can find them within ten years, how can you say that it is slow?

However, it turned out that after using the talisman handed over to him by Chen Zhi, the whole process was quickly compressed, and relying on the guidance of the talisman, he actually found traces of the mineral deposit in just a few days.

At a time when the whole of Daijun was panicked by the invasion of the Xianbei people, the prospecting team led by Ge Lu entered the country quickly and achieved important results one after another, which finally led to the meeting between Ge Lu and Chen Zhi.

But what really made Ge Lu together was actually the talisman that guided them, in his opinion, this thing is too magical, if you can learn the mysteries, the future Taoist Dan will be able to shine!

It's just that although he has the heart to ask, he also knows that this kind of thing probably involves the inheritance of the Dao system, not a close person or a disciple, I am afraid that it is not good to ask, otherwise it will break the rules of the rivers and lakes, so he has endured it, even if he saw Chen Zhi, he didn't ask.

So after thinking about it, he still decided to press his mind, deal with the current matter first, get a little closer to Chen Zhi, and then test one or two, and also inform Ge Hong in the south about this matter, and see if his teacher has any suggestions.

So, he went on to give a general account of his thoughts.

According to Ge Lu's meaning, the mineral deposits in Dai County can be excavated by the well canal method, and the construction progress can be accelerated by the way of underground water circulation, and ventilation and lighting conditions can also be improved.

"However, this method was not proposed by me, but the conclusion reached by a few helpers with mining experience after discovering that there is a river passing by."

After Ge Lu finished speaking, Chen Zhi nodded and said, "Okay, let the experts discuss this aspect, but we must ensure that it is feasible." ”

Ge Lu said: "There is another major question, whether it is to build a mine or to officially dig in the future, there must be manpower, is Taishou ready to recruit this miner?" Or maybe it's from the martial arts? I heard that you have summoned the martial arts of the Daijun family. ”

"Miners are dangerous jobs, and working in deep mines, accompanied by dampness, often leaves the root of disease, how can they use martial arts?" Chen Zhi shook his head, and then said: "However, you don't have to worry about manpower, I have prepared more than a thousand people, and then the number of people will increase, and there will be no worries about not being enough." ”

When Ge Lu heard this, his heart moved, and then he nodded and said, "That's good." ”

Chen Zhi then looked at Zhou Ao and said with a smile: "Wu Qu, I've kept you waiting for a long time, and I called you over to let you arrange some manpower to follow Dao Chang Ge over to protect their safety, and at the same time, if you want to have any strength, you can go up first, of course, the premise is to pay attention to safety." ”

Zhou Ao was full of answers.

Afterwards, Ge Lu said goodbye, and after Chen Zhi sent him out, he came back to sit down next to Zhou Ao, and asked with a smile: "Do you have anything to tell me?" I look at you, it seems that you have something on your mind. ”