Zhang Beichen also understands the situation in Baiyang County. These days, he checked the information in the county, and he knew that Baiyang County used to be a barren land.

It turned out that the population was not large, and relying on Longyan Spring, the people could still live. However, as the Qin State lost more and more land, the number of displaced people increased, and the number of people who migrated here also increased, and the Longyan Spring was not enough for them to get water.

Zhang Beichen conducted a small survey of the geographical environment here, and according to previous information, Baiyang County also had an above-ground river hundreds of years ago, and then dried up.

However, Zhang Beichen deduced from various sources that there should be enough groundwater underground in Baiyang County. However, the geological structure here is special, the ground is mostly rocky, it is difficult to drill wells, and the depth is not enough to find groundwater.

As a science student, and with some experience in simulation, Zhang Beichen already had an idea in his heart.

He said to everyone: "Since this county is the county order of Baiyang County, this county will naturally solve these problems. But if you break the law, you must also be dealt with according to the law. ”

Hearing his words, Yu Yong said, "Deal with it? Can you handle it? Lord Zhang, if you can solve the problem of water for the people of Baiyang County, let us not have to look at the sky to eat, and fight for our lives every year. I'm Yu Yong, I don't need you to execute, I'll do it myself and correct myself! ”

"Yes!" The other felons also said, "If you can get everyone to use water, what if we can do it?" At least our children and grandchildren don't have to kill people for a bucket of water, just like us! ”

"Good!" Zhang Beichen looked at everyone and said, "Today, this county will convince you!" ”

"Ah Da, bring the tools from the county government and dig a well to get water!"

"Yes!" Ah Da and the others went back to the county government to move things.

And Bai Liangpu and others were laughing secretly.

"What an idiot this kid is." Bai Liangju smiled, "If it is so easy to dig a well in this realm, will they still compete with each other for water?" ”

"He's cornered!" Bai Liangpu's face was proud, "He doesn't dare to kill people now, and he can't let people break the law, so he can only gamble." It's a pity that even if he digs here for three days and three nights, he can't dig up water! ”

"My lord, are we really going to dig a well for water?" Liu Wen's expression was a little hesitant, judging from his experience, this kind of thing is in vain.

"Of course!" Zhang Beichen instructed, "Master Liu, take me to find the ancient river channel in Baiyang County before. ”

"This ...... All right. Liu Wen couldn't help it, so he led him to the way.

Those prisoners, the common people, also followed him to see what kind of fame Zhang Beichen could make.

After a short time, Ah Da and the others took the tools.

Bai Liangju looked over and saw that the servants were dragging a cart, on which were placed hollow bamboo tubes of similar caliber, with iron cones, shovels and some metal devices on them.

"I thought that this county magistrate had some means, just such a thing, to dig a well?" Bai Liangju smiled, "What is the bamboo tube used for?" When firewood burns? ”

Everyone was puzzled.

Zhang Beichen is still choosing a site, and he also specially invited a few old people who are good at drilling wells and asked them to help see the location.

A group of people came to an ancient river channel, which has been dry for more than 100 years, and the original river channel has long been turned into a wasteland.

An old man said, "My lord, I heard my grandfather say that there used to be a river here. The terrain is low-lying and suitable for drilling wells. ”

Liu Wen hurriedly reminded Zhang Beichen: "My lord, the county once sent people to dig a well here, and it took several months to dig a full 200 feet, but no water came out!" There is too much gravel underneath, and the deeper it is, the harder it is to dig, and you see, there is a well pit over there! ”

One foot of the Qin State is about 23 centimeters, two hundred feet, and it is about 46 meters!

Zhang Beichen went over to take a look, and sure enough, there was a big pit. At the bottom of the pit, gravel and dirt are mixed.

Seeing this, Ah Da and the others were also embarrassed, and said to Zhang Beichen: "My lord, this place is not suitable for digging wells, and the water has not yet come out of the water after digging so deep, and it is estimated that it will be a waste of time to dig again." ”

"I'll go down and have a look." Zhang Beichen asked people to use a rope to put himself down, he touched the wall of the cave, and found that the wall of the cave was indeed wetter than the top.

He went up again, and walked around for miles.

Everyone was waiting for him, and Yang Shan asked impatiently, "Zhang Beichen, can you do it?" If not, just release them, don't waste everyone's time here! ”

Zhang Beichen glanced at him and didn't reply. He observed his surroundings and knew in his heart that there was water underground!

When he went down to the well, he noticed that the temperature below ground was and that the walls of the cave were wetter than the ground. The surrounding trees and vegetation are obviously denser than in other places.

Some plants have well-developed root systems, and they are able to draw water from deeper depths, indicating that there is water underground.

As for why it was not drilled, there is only one reason, that is, the drilling technology here is not developed enough, so it can not be drilled to a depth of 50 meters.

In his previous time and space, even if he drilled a well in the countryside, he often drilled two or three hundred meters deep. And in this era, it is very difficult to dig a few hundred meters deep by relying on manual digging!

"Get ready to dig a well! Just keep digging along this waste well! Zhang Beichen commanded.

"Yes!" The officers were ready, but Zhang Beichen said to Che Yang: "General, please also ask your soldiers to help." They have a deep cultivation and are faster! ”

"It's okay!" Che Yang asked his soldiers to help dig wells, and their strength and endurance were stronger than those of the errands, who dug wells and dug rocks, and the errand soldiers helped to carry the mud and stones in hanging baskets.

The soldiers took turns to fight, and soon increased the depth of the well by several tens of meters.

After an hour passed, the people at the scene were impatient to wait, and there was still no water at the bottom, and the soldiers had been consuming spiritual power, and they couldn't bear it.

"Master Zhang, according to your method, there may not be water for another month of digging, do you want us to wait here for a month?" Bai Liangpu asked.

"What are you anxious about?" Zhang Beichen glanced at the depth, it was almost enough, so he ordered someone to put down the prepared things, and at the same time install something similar to a large wheel, on which a metal cone was tied with iron cables.

"What is this?" Everyone had never seen this thing, and they looked puzzled.

"Tread on this wheel and dig the ground with an iron cone!" Zhang Beichen commanded.

It stands to reason that the iron cone smashed into the ground, smashing a hole the size of a bowl at the bottom of the hole, and even the rock could easily cut through it!

Liu Wen was surprised: "This is much more labor-saving than manpower!" ”

The hard rock was gently shattered!

They don't understand that this is actually a disguised lever linkage device, after connecting the iron cone, the soldiers turn the wheel on the pedal and drive the iron cone, forming a human impact drill!

This is not Zhang Beichen's own originality, but a deep well digging technique pioneered by people more than 1,000 years after his original time and space.

The excavation of wells in the seven countries is all shallow wells, which is time-consuming and labor-intensive. Think about it, if you want to dig 200 meters, that's about 870 feet!

If this is dug by manpower, how long will it have to be dug? Even if you are a martial artist with cultivation, you have to die of exhaustion!

Moreover, the shallow well should be dug in a large area, and it should give people space to stand, dig and carry mud and rock.

And to dig a deep well, it is enough to dig a hole the size of a bowl.

"My lord, are you digging a well? Just such a small hole? How deep can you dig? And how do you get out of the mud and stone inside? Even if the water is dug up, how can the water come up? Are you kidding me? Yu Yong and the others couldn't understand and asked.

"In two hours, the water will come out!" Zhang Beichen said firmly.

He naturally has solutions to these problems. After digging a certain depth, it is put into the bamboo tube, which is put into a one-way valve, which can use air pressure to pump out the mud and stone inside, and then put the drill bit in, go in to hit, and so on, until the water is punched.

This is the deep well drilling technology, which in the agricultural era can drill wells hundreds of meters deep, and is known as the first version of oil drilling technology.