Diao Chan straightened his waist back,

The child is growing faster and faster,

While feeling deeply happy,

The body has become more and more bulky,

After adjusting the sitting position,

I feel a little more comfortable,

Then he asked:

"Husband, these ideas of yours are very good, I used to have such thoughts at the beginning, but I didn't figure it out after thinking about it for a long time. How do you envision that? ”

Lu Bu looked at Diao Chan and Ding Yao distressedly,

"The two ladies have worked hard, I will speak as soon as possible. You see, not far from this mine, there is a small stream that flows through it, and the water is quite rapid. You've brought it here before, and I'm going to renovate this section of the diversion a little bit to make it more turbulent upstream, and then build a reservoir downstream, and end up here. ”

Lu Bu pointed to the middle of the line that represents the river,

To continue:

"In this middle position, build a large waterwheel."

"Waterwheel?" Ding Yao asked, "Husband, are you talking about the keel waterwheel?" ”

Smiling and nodding, Lu Bu said:

"That's right, it's the same keel waterwheel you made when you used it to irrigate your fields. A slight makeover, though. ”

Lu Bu took a piece of paper again,

Draw on it and say:

"Enlarge the round wheel of the waterwheel, and then hang a wooden barrel in front of each baffle, this barrel does not need to be too big to affect the normal operation of the waterwheel. At the top of the wheel, two passages were built leading to two cisterns leading to the bathhouse, one above the coal firing workshop to heat the water, and the other above the bathhouse to store cool water. Mix the two types of water so that the workers can adjust the temperature of the water when they take a bath. ”

Ding Yao didn't react after hearing it,

She was twisting her eyebrows to understand Lu Bu's design,

Diao Chan's eyes are bright,

He said, "Aha, you actually came up with this solution. ”

Lu Bu proudly said to Diao Chan:

"Of course, don't look at who your husband is."

"Okay, okay, I know you're the best."

Diao Chan jade hands cover small mouths,

A pair of beautiful eyes are bent like two crescents.

"Wow, husband, you're really amazing."

Ding Yao threw himself in front of the sketch,

Looking at Lu Bu, his eyes were shining with sparkling stars.

Lu Bu smug smile,

But it attracted the grimace of Diao Chan on the side,

The two smiled tacitly.

This design of Lu Bu,

In the eyes of Ding Yao and Zhang Da,

are very novel and ingenious,

But thousands of years later,

But it's the most ordinary and basic thing.

Ding Yao didn't see the cattiness between the two of them,

Pick up the second sketch drawn by Lu Bu,

He asked:

"But husband, how do you regulate these two pipes? Could it be that it can't be done with a wooden stopper? ”

Stuck out his little tongue,

Ding Yao grimaced coquettishly.

"Hahaha, today Zhang Dajiang and I worked out a thing in the afternoon, called a switch. Zhang Dajiang said that there should be no problem in making it, and you will know when he sends a sample. ”

Lu Bu scratched Ding Yao's nose,

Explained to the second daughter.

After a pause, he continued:

"Regulating hot water in the shower with a keel waterwheel is just the first aspect. In addition, I also need another power transmission device for this keel water wheel, which is connected to the fan you designed before, and uses water power to convert it into wind power to ventilate and supply air to the inside of the mine. ”

Diao Chan nodded and said:

"It's a good idea, but in this case, it won't put too much pressure on the keel waterwheel, and besides, this power transmission device won't be easy to complete, right?"

Although Diao Chan was asking Lu Bu,

But his eyes looked at Ding Yao, who was bowing his head and contemplating on the other side.

She knew that Lu Bu could only rely on some experience of later generations at most,

Provide a feasible idea and design,

The people who actually make tools that work,

There are only professionals like Ding Yao and Zhang Da.

The reason why Lu Bu called the two of them over,

It is for this reason that it is also possible.

Sure enough, Lu Bu also nodded and said:

"That's right, although I have this idea, but I don't have the ability to design such a device, I only hope that Yao'er and Zhang Dajiang, you can bother to see if you can design this kind of device."

Ding Yao nodded,

She took the words of the two of them,

all listened to the brain,

After hearing Lu Bu's idea,

She first felt very curious,

And then the excitement and eagerness to try,

Ever since I came into contact with the trick,

And she found what she liked.

That's why we can make rapid progress,

It took a short time,

It has reached a level second only to Zhang Da,

This is inseparable from her own love and hard work.

Therefore, after hearing this novel idea proposed by Lu Bu,

She soon became obsessed with the design of these devices.

Holding Lu Bu's messy drawings,

I turned it over and looked at it for a long time,

Ding Yao found another drawing,

Write and draw on it,

Although Lu Bu and the two of them can't understand it,

But it can also be seen that it is probably the shape of a keel waterwheel.

There are also gears of various shapes, large and small.

He let out a long breath,

Ding Yao put down the paper and pen in his hand,

Rubbed his somewhat sore waist,

With Lu Bu's support, he returned to his seat.

Lu Bu asked with concern:

"Yao'er, if you can't hold on, go back to rest, anyway, this thing can't be completed in a day or two."

Ding Yao waved his hand and said:

"Husband, it's okay. I'm just a little tired, but I haven't designed these things in a long time, and I'm a little rusty. I like these ideas very much. Husband, you go on, Yao'er is fine. ”

Lu Bu was still a little distressed,

But after seeing the firm eyes of the two women,

He continued:

"The effect of such a hydro-driven wind circulation system cannot be extended to the deepest part of the mine, and as the mine gradually deepens and expands in the future, I am afraid that the effect will become smaller and smaller, but it is better than nothing. For this reason, I also came up with a second plan. ”

"The second plan?"

The two women asked in unison.

"That's right, the second plan. I also inquired in the afternoon that the mine was not small in size, so I conceived of digging another mine in another place, two parallel to each other, and digging several small passages between the two mines to make them connected. The two mines, one as an air supply outlet and the other as an air outlet, are placed at a fixed distance between the two mines, which can also play the role of ventilation. ”

Lu Bu was drawing on the parchment,

He explained in detail to the second daughter.

Ding Yao opened his mouth and said:

"It's a good approach, but there are two very critical problems, the first is that the second mine is being excavated, and it is very difficult to ensure that it can be connected to the first mine."

Lu Bu and Diao Chan nodded at the same time,

This is indeed a very difficult thing to do.

After a pause, Ding Yao then spoke:

"The second problem is that if you open several channels, it is also a very serious test for this security. My sister once said that mines are very dangerous, and the danger that we are most familiar with and most likely to occur is to collapse or dig through the underground water flow. Such a huge project means that our chances of facing this risk will be greatly increased. ”

Diao Chan also chimed in:

"Yes, and there's an even more terrible gas leak under the mine, so we can only use open flame lighting for now. That's why I didn't dare to expand the size of the mine. Among the two coal mines today, this one in the Ugin Mountains is relatively large, and the other one is not as large as here. ”

"Well, Chan'er, Yao'er, I have also taken into account all the concerns you have mentioned. Therefore, I mean that this mine, under today's technical means, we can mine a distance of 100 zhang at most, and control the deepest depth within 300 zhang, which is relatively safe. Mining a passage at a safe distance next to it to make it run through it will be as safe as possible, and on the other hand, it will increase our production and the life of the same mine. When both channels are mined, we can close them with earth and rock, and then we can mine new mines. ”

Diao Chan and the two of them thought carefully for a long time,

but couldn't come up with a better way,

Then he nodded in turn,

No further objections were raised.

Only then did Lu Bu continue to speak:

"And our existing mine still needs to be expanded and widened, in addition to installing fans, I also want to put on a set of rail transportation equipment."

"Rail transport?"

Diao Chan looked at Lu Bu, his heart moved, and he said:

"You mean a railcar? yes, why didn't I think of it in the first place? Could it be that it is really a stupid pregnancy for three years? ”

Lu Bu laughed twice, but did not answer.

"Sister, husband, what are you talking about?"

Ding Yao stared at a pair of beautiful big eyes and asked the two people in confusion.

This time, without waiting for Lu Bu to speak,

Diao Chan preemptively explained:

"Let's talk about the track first, that is, lay two things with the same height and width on the ground, the spacing between the two is always the same, and then make a special vehicle, and then make a special vehicle, the bottom of the vehicle is provided with four wheels that can be rotated, and the hub should be able to bite on the track, so that the vehicle can travel back and forth on the track, which is very labor-saving, but the disadvantage is also more obvious, that is, it can only travel on the track."

"Oh, I see. Sister, you are so powerful, you even know this, why didn't you tell me before. ”

Ding Yao blinked his eyes and asked seriously.

Seeing this, Diao Chan immediately knew, and as soon as he was proud, he forgot his form,

I had to turn my head and look at Lu Bu as if asking for help.

Patting his forehead, Lu Bu hurriedly explained:

"Because the day before I went to the mine, I talked to your sister Chan'er about this matter, and I talked about the track at that time."

Before Ding Yao could answer, Diao Chan was busy saying on the side:

"Yes, yes, look at my brain, I almost forgot."

Raised his hand to wipe the beads of sweat that didn't exist on his forehead,

Lu Bu hurriedly changed the topic and said:

"I also came up with a human-powered rail car that could be moved on the track by turning the rocker and the speed could be adjusted freely."

Hear about novelties,

Ding Yao really immediately put the matter behind him,

Pulling Lu Bu vigorously to ask about this human-powered rail car.

Seeing that the subject was successfully diverted,

Lu Bu secretly winked at Diao Chan,

Then patiently explained to Ding Yao the kind of rail car he recalled before.

Ding Yao is worthy of being a genius in this regard,

Lu Bucai just explained a little,

She can understand the seven-seven-eight-eight,

And immediately to the design described by Lu Bu,

Proposed additions and modifications,

The two discussed the effort of less than a meal,

It almost designed the kind of human-powered rail car that Lu Bu imagined.

Unconsciously,

The three of them had been discussing for nearly an hour.

Diao Chan stood up,

gently pounded his waist that was a little sore,

Opening:

"I really didn't expect to talk for so long all at once."

Lu Bu came back to his senses,

Looking out the window,

It's cold early in the north,

It was also getting dark early.

Afraid of two pregnant women freezing,

There is always a brazier in the house and I don't feel cold,

But now when I look out the window, I realize,

It's getting dark.

Lu Bu hurriedly said:

"It's all my fault, it's all my fault, the two ladies should have been hungry for a long time, let's go eat quickly."

Under Lu Bu's careful support,

Diao Chan and Ding Yao slowly stood up,

Diao Chan said angrily:

"Hmph, I know that I am busy with your career, and by the time you think about eating, a few of us will have already starved to death, I have already told Ning'er that they are preparing meals, and I am afraid that they are already waiting for us at this moment."

Touched the belly,

Diao Chan said softly:

"Child, child, you cruel father won't give us food."

A black line immediately appeared on the top of Lu Bu's head,

The corners of his mouth twitched,

I want to speak,

Suddenly I felt as if I had forgotten something.

Scratching his head, he stood there and pondered.

Ding Yao discovered Lu Bu's abnormality,

Turning around, he asked with concern:

"What's wrong with my husband? But too tired? ”

Lu Bu came back to his senses,

Shaking his head, his gaze noticed Ding Yao's hand stroking his stomach,

A slap on the head of the door:

"Hey, I almost forgot the most important thing."

The two women turned their heads to look at him suspiciously,

Lu Bu smiled bitterly and said:

"When I was in the mine today, I promised to find a way to get each of those workers to marry a daughter-in-law."

After listening to this sentence, Diao Chan

The corners of his mouth twitched for a long time,

Mei glared at Lu Bu,

Turn around and walk out and ignore it,

A word came softly,

"Solve the things you promised!"

The swaying figure shook gently,

Something seems to be suppressed.

Ding Yao peeked at Lu Bu,

Without saying a word, he quickly chased him out.

After a while, the laughter of two women like silver bells came from outside the door.

"Ahh

Lu Bu is like a frosted eggplant,

With a long sigh,

It took a long time to come back to his senses,

trotted in the direction the two women had left.