Three hours later, Ye Lao took the measured data and came to the residence of the three little children alone.

Ye Lao only had the opportunity to take a closer look at this novel sand table model.

Looking at the model alone, the direction of the water flow in Canghe River is clear and clear, and the location of the flood outlet has not yet been determined, but it is visible to the naked eye where it is not suitable.

Although he had long understood the subtlety, he was still amazed at this time.

The two children took over the measurement data and modified the river channel and depression little by little.

By the time all the data is used up, all the terrain on the sand table is almost the same as the real situation.

When you look up, it looks like the terrain in reality has shrunk thousands of times out of thin air and solidified on the wooden board.

After shaping the river model, Chen Ping grabbed a handful of fine soybeans that had been prepared long ago and put them into the model one by one.

The room was silent, and the three of them stared at the sand table.

The round beans tumble along the river, scratching off traces of different shades on both sides of the river.

The voice was weak and inaudible, but the hearts of several people were raised.

They resemble the coming flood peak, crashing against the riverbank.

Although this kind of simulation method is not very accurate, its effect still completely shocked Ye Lao and He Qingxuan.

The two looked at Chen Ping's small hands and kept sprinkling soybeans into the river.

As you can imagine, it is like a torrent that flows upstream into a narrow channel.

When these torrents converge, they quickly form a huge impact, like a fierce beast clash that washes the embankments on both sides of the river through the gaps.

After all the soybeans rolled downstream, the three of them immediately stepped forward to check the traces left by the soybeans on the embankment on both banks.

Soybeans are small but the marks left by the sand are very noticeable, and the more mutilated the area, the greater the impact.

Where it remains as it is, it means that this section of the waterway is not affected by the flow of the flood.

The wind outside the house was tight, and the candle flame swayed slightly, illuminating Ye Lao's serious face.

He quickly marked a few of the places that were most vulnerable to the impact of the flood peak.

Then let Chen Ping and He Qingxuan repair the sand table and sprinkle soybeans again.

After five repeated trials, each time the place that was washed away by soybeans was marked and compared on the map, and finally Ye Lao found the most suitable location of the floodport.

According to the methods of this world, three days is far from enough, and the manpower and material resources required cannot be underestimated.

Not to mention the time saved by the sand table method, the efficiency alone is many times higher than before.

Looking at the map, Ye Lao couldn't help but take a deep breath.

It's amazing!

He hoped that one day, Chen Ping would be able to dedicate this law to the imperial court at the right time, so as to alleviate the cost of water conservancy and civil engineering works everywhere, and also reduce the burden on all the people in the world.

......

At the end of the hour, it was not yet dawn.

In the barracks, Wang Xianling looked at Ye Lao in front of him in amazement.

He looked down again at the location of the spill he had just marked on the map.

Although he had no doubts about Ye Lao's character and knowledge, he still hesitated and asked at this time: "Ye Lao is really clear?" ”

"Those measurements have just been sorted out in less than a day, and they have been calculated?"

"Although this official is not proficient in arithmetic, he also knows that this matter is extremely difficult, Ye Lao, you must not ignore it!"

Ye Lao stroked his beard and said with confidence: "Although the county lord ordered the excavation of the flood channel, if it is found that the location of the flood outlet is not right afterwards, the old man is willing to take on this matter!" ”

Wang Xianling's doubts in his heart were slightly reduced.

sighed: "I don't want Ye Lao to come to such a profound and mysterious height in arithmetic!" If this matter is learned by those arithmetic masters in the capital, they will definitely be ashamed to close the door! ”

Ye Lao, who was already mentally prepared, also blushed slightly after hearing this.

The master of arithmetic in the Dayu Dynasty will naturally not be the only one Ye Wenchang.

In the capital, there are several old friends working in the Ministry of Household and the Ministry of Industry.

Those people have been dealing with all kinds of numbers all their lives, and their attainments in arithmetic are by no means below Ye Lao.

If those people knew that Ye Lao had only spent a few hours of hard work, and he had calculated the exact location of the flood outlet, they would definitely bow down to him.

Thinking of this, Ye Lao was really a little ashamed.

This time, only thanks to Chen Ping's sand table model, the calculation time will be greatly shortened.

"The county has praised it, and the old man deserves such praise."

Ye Lao thought of his disciple, and couldn't help but sigh a little in his heart.

If it is now the beginning of the dynasty, then whatever he says, he will show this old face to make Chen Ping famous.

But today's court ......

"Lord County, without further ado, let's send someone to dig as soon as possible!"

"Okay," Wang Xianling grabbed the map and said decisively, "This official will give the order!" ”

Now that the situation is urgent, he can only believe in Ye Lao.

After Zhao Jin, the head of the capital, received the order, he immediately rushed to the river embankment with hundreds of people.

To be safe, Ye Lao also followed, and he wanted to personally command to avoid mistakes.

It is related to the lives of countless people in the county, and there is no room for sloppiness.

The other side.

Chen Ping and He Qingxuan were in the house, staring at each other with big eyes.

He Qingxuan looked at the vivid simulated sand table, and his eyes were full of reluctance.

"Brother Chen Ping, do you really want to smash it?"

"Smash!"

Chen Ping is concise and to the point.

"The teacher is right, the sand table is a sin for us, and it is a blessing and a curse!"

"Alas, I also understand this truth, but I am a little reluctant to ....."

More importantly, this sand table is also a testimony of the two of them saving Yongshun County.

He Qingxuan sighed, took one last look at the sand table on the table, and handed the mallet in his hand to Chen Ping.

"This sand table is your idea, or it's up to you to do it."

Saying that, He Qingxuan turned his back, unwilling to see this scene.

Chen Ping carried the mallet and smashed the sand table beyond recognition with a few clicks.

As soon as the smashing was finished, there was a knock on the door.

The two hurriedly packed up the scattered sand table model fragments before going to open the door.

Seeing that the person who came was Ye Chongwen, he breathed a sigh of relief.

Ye Chongwen is like a little mud monkey, his whole body is covered with mud spots, and he doesn't look like a scholar at all.

He Qingxuan asked: "Didn't you say that you should say the code before entering the door?" ”

Ye Chongwen scratched his head in embarrassment and whispered, "I was in a hurry and forgot about it!" ”

"How's going on the embankment?" Chen Ping asked about the flood.

These days, Ye Chongwen followed Ye Lao back and forth.

The whole person is visible to the naked eye.

He poured himself a cup of tea first, took a big sip, and then replied with a smile on his face.

"Don't worry, the flood channel has begun to be dug, and my grandfather is in command! It is estimated that it will be dug in two days! ”

Chen Ping got up and walked to the eaves outside the door and looked up.

The sky was covered with dark clouds, and there was a kind of dreary dreary that black clouds were about to destroy the city.

Apparently this is a precursor to an even bigger rainstorm!

This torrential rain is bound to add another handful of firewood to the rising water level.

Chen Ping pondered for a while, and then decisively went back to the house to copy an oil-paper umbrella.

"I'll go take a look at the embankment."

Ye Chongwen and He Qingxuan didn't say much, and followed directly.

......

The riverbank resounded with a uniform sound of trumpets.

I saw hundreds of people, wielding shovels in the position chosen by Ye Lao.

Each of them is working hard, this is a race against God!

Behind the embankment is their own farmland, and the flood protection berm protects their own grain, so how can they not work hard.

Although digging ditches in the rain was hard and tiring, they did not complain.

In addition, the county decree also promised that the people who participated in the digging of the flood canal this time could be exempted from forced labor at the end of the year.

With these prerequisites, the people will work harder.

The three children rushed to the river embankment, but Ye Lao was not found anywhere.

One of the people smiled and showed them the way.

"A few little ministers, Ye Lao is over there!"

The three of them followed the direction pointed by the people and saw a scene that surprised them incomparably.

Ye Lao had already taken off his Confucian shirt at this moment, changed into the clothes of ordinary people, mixed in the crowd of people, and was digging with a shovel.

"Grandpa!"

"Teacher!"

"Teacher!"

When Ye Lao saw the three of them coming, he stopped what he was doing and frowned slightly.

"Didn't I tell you to go back first, this is not the place where you children should be!"

"Teacher, we don't have to worry about going down the embankment, so we want to come over and have a look."

Chen Ping explained.

Ye Lao shook his head with a smile and said, "Don't worry, the flood canal is being dug very quickly, and it can be dug before sunset tomorrow at most." When the time comes, the cultivated fields in the county will be saved! ”

He Qingxuan asked puzzledly, "It's just that teacher, how can you do it yourself......

He Qingxuan was born in the home of a businessman, and he was clothed and fed since he was a child, and there were little maids to serve him when he dressed and washed at home.

Moreover, he believes that the division of labor is different, and the scholars should study, and the coolies have their own people to do it.

So I don't understand why the teacher should do it himself and dig ditches with the people.

When Ye Lao heard this, his face was solemn, and he said in a deep voice: "Why can't the old man do it?" ”

"Qingxuan, you must know that the people take food as the sky! For the people, the food is bigger than the sky, and it is bigger than the saint's article! ”

The food is bigger than the sky!

Bigger than the saint article!

These two sentences, like a dusk drum and morning bell, directly hit the hearts of Chen Ping and the others.

The people around heard it and applauded loudly!

Chen Ping and the three of them all felt it, bowed down to Ye Laoyi, and said in unison.

"Teacher/grandfather, disciple/grandson has been taught."

After saying that, the three little boys also wanted to help dig the ditch.

was stopped by Ye Lao, and the surrounding people ridiculed him again and again.

"We adults dig the ditch, and we don't have to do it!"

"Haha, I'm afraid I can't even hold a shovel......"

"Reading people are good, when this season's grain harvest is abundant, I will also save money to let my little mud monkey read and write."