How can I bow my head and serve the powerful officials?

Hearing the noise, the students were immediately alerted and looked at Ouyang Jiu, "Brother Ouyang, what did you see? Tell me now!"

"Yes! Among us, you are the one who knows these mountains and rivers best!"

Ouyang Jiu's ancestors were from Jinzhou, southwest of Beijing. The mountains there are high and the waters are clear, and there are many people who are good at singing folk songs and fishing. Ouyang Jiu grew up there and knew a lot about the mountains and rivers, so everyone was willing to believe what he said.

Ouyang Jiu did not hide anything. He took a step forward and said excitedly, "Look, everyone. Isn't the gap on the left side of this barrel as wide and high as the original river channel of the Minjiang River? And the gap on the right side is like the river channel that is being dug now, narrow and low?"

Hearing this, the students couldn't help but look towards the Minjiang River beside them.

As expected, the river workers gathered on the east side of the Minjiang River. Looking at their positions and distribution, one can infer the width of the river channel to be dug. It is obviously much narrower than the undug river channel on the west side. And because of the excavation of river sand, the river channel on the east side is also much lower than the original river channel on the west side.

It just happens to correspond to the notch feature on the wooden barrel.

Ouyang Jiu continued to analyze, "The water poured out of the yamen runner's bucket is like the water of the Minjiang River. When the water comes slowly and scarcely, the water will flow to the side of the low gap first; and when the water comes quickly and in large quantities, most of the water will flow out of this gap that is only slightly higher than the low gap, but much wider! And because the low gap is narrower, the water flowing out is actually a few percent less!"

He pointed at the wooden basin on the ground and said, "Look, is there more water on one side and less on the other side of the basin?"

When everyone looked, they found that it was true. The river water flowing out of the high and wide gap was nearly 20% more than that flowing out of the low and narrow gap.

"Oh! I understand!" Bian Yangchun suddenly realized, "In spring and summer, the water of the Minjiang River is turbulent and abundant. If the river channel on the east side is narrowed, when a mountain torrent comes, 60% to 70% of the river water will flow into the original river channel, and the remaining 30% to 40% of the river water will flow along the low and narrow river channel to the mouth of the Yuji Mountain River channel, providing water for irrigating the fields in the eastern county!"

"In autumn and winter, the amount of water in the Minjiang River starts to decrease. At this time, because the river channel in the east is lower and deeper than the original river channel, most of the river water will flow to the low river channel first. Even in the dry season, it can provide sufficient irrigation water for each county!"

"In this way, the river water in the flood season will be divided into six parts in the west and four parts in the east, and in the dry season it will be divided into four parts in the west and six parts in the east. No matter what, it can ensure that the people downstream always have the right and sufficient amount of water to irrigate their farmland!"

After listening to the two's explanation, the students could not help but feel enlightened, "So that's what it means!"

"They actually took into account the river conditions in Yizhou in summer and winter, and planned the diversion of the river water for the fields according to the different water volumes, instead of simply splitting it in half... What a clever idea!"

"We are so ashamed that we were so short-sighted as to think that we only needed to solve the problem of flash floods in summer..."

"Why should you be discouraged? Water flows to low places, and people go to high places. Now that we have seen the laws of mountain and water flow, it also means that we have made further progress in geography and phenology. This is something to be happy about!"

"Brother Li, you're right! This is indeed something we should celebrate and be happy about!"

The students were all smiling happily. Standing in this majestic place with high mountains and big rivers with their tiny bodies, they could see through the mysteries of the natural landscape. It was as if they were standing in the clouds overlooking the earth. Their minds and horizons were suddenly enlightened, as if they had stepped into another world.

Is this the feeling of conquering nature?

Everyone was having a great time, but after Ouyang Jiu finished his explanation, he kept frowning, thinking about something. It was not until everyone calmed down that he asked, "Brother Zhu, I have a question."

Zhu Xiaobiao turned his head and looked at him, his eyes flickering slightly, "You say."

"I don't know if I'm overthinking it. When Brother Zhu demonstrated the wonders of the river, there seemed to be too much river sand in the wooden barrel." Ouyang Jiu pointed at the sediment in the wooden basin and said, "Is there any hint? Or is it just a coincidence?"

"That's right." Everyone nodded. If they wanted to demonstrate the amount of river water, pure water would be enough. Why add so much river sand?

Zhu Xiaobiao took a deep look at Ouyang Jiu, then admitted, "Yes, I did it on purpose."

Is this really intentional?

Why?

"The Minjiang River has a lot of water and is turbulent. It is inevitable that it will carry a lot of river sand downstream. However, the river mouth we dug at Yuji Mountain is very narrow and can easily be blocked by river sand and silt." Zhu Xiaobiao pointed to the wooden barrel that had stopped flowing water. "Look, isn't there a lot of sticky river mud left near that narrow gap?"

Bian Yangchun was the first to move closer to take a look, and sure enough, "there is indeed mud."

"What should we do then?" Everyone couldn't help but worry again, "Won't the river mouth of Yuji Mountain be dug in vain?"

Zhu Xiaobiao smiled and shook his head, "No. Do you remember the real truth behind the story of Yugong moving the mountains?"

The students couldn't help but ask: "Use God? Resist God?"

"That's right," Zhu Xiaobiao nodded. "Use God to fight against God. Since we can figure out the method of water distribution in summer and winter in the Minjiang River from the phenology that water flows to lower places, we can naturally figure out the method of solving the problem of river siltation from other phenology."

Zhu Xiaobiao took out a piece of wood and poured the river water containing sand in the bucket into it.

The river water splashed everywhere, and a lot of river sand also splashed out. "The Minjiang River is turbulent and fierce. As long as a high stone dam is built next to the river mouth, the river water will hit the high stone dam first. This place happens to be at a bend, and the blocked river water will flow back, and the flying sand will splash far away. If a weir is built according to the landing position, all the river sand can be piled here."

"In this way, the problem of river sand accumulation can be solved. We plan to call this high stone dam Li Dui, and the weir pile where the river sand splashes down is called Fei Sha Yan," explained Zhu Xiaobiao.

The students' eyes couldn't help but become brighter and brighter.

"Feishayan, what a good name!"

"Li Dui means the pile of rocks that separates the flying sand from the river water, right? It's really easy to understand!"

"Since these two places already have names, what about the river mouth of Yuji Mountain?" Ouyang Jiu asked curiously, "Has it been named?"

Zhu Xiaobiao shook his head. "Your Highness, well, our Lord did give it a name, Baopingkou, but after thinking about it, he still felt that it would be better for the people here to give it a name, which would be more meaningful."

The students could not help but nod, "Indeed, after all, the river mouth was dug by the people themselves."

"Brother Zhu, is there anything else?" Ouyang Jiu said straight to the point, "The matter of splitting the river probably involves more than just these, right? Don't keep it to yourself, tell us all at once."

"Yes, yes!" The other students nodded and looked at Zhu Xiaobiao expectantly.

Zhu Xiaobiao nodded, took down a painting tube hanging on his body, and took out a piece of drawing paper from it.

The drawing paper was unfolded, and on it was the construction plan for the river splitting project.

"We will put river pebbles into sacks here and build a diversion weir to separate the east and west flows of the Minjiang River. It should be in the shape of a fish mouth. The sharp and rounded corners can help divert the water of the Minjiang River, providing a buffer without splashing."

Zhu Xiaobiao pointed to a location on the map and said, "When a flash flood breaks out, even if 40% of the river water flows into the eastern river channel, it can be very dangerous. Therefore, we have to divert the water again, right in the middle of the fish mouth and the flying sand weir, and use the terrain to divert part of the river water back to the original river channel."

"At the same time, the original river channel will be widened further to the west to ensure that it can accommodate more water in the summer and share the pressure on the east river channel."

"Yuzui divides the water, Baopingkou limits the water, and Lidui blocks the water. With the cooperation of the three, the flood in Yizhou will be solved by itself."

After saying that, Zhu Xiaobiao suddenly smiled and said, "What's interesting is that there is a naturally formed river island in this river channel, which is exactly the location of the fish mouth. We only need to modify it to better divert the river water."

“This is the charm of nature.”

All living beings can't help but sigh, "Nature... is natural, just like the changing of seasons, birth, aging, sickness and death. It's really wonderful to call this vast world nature!"

“Isn’t this the way of harmony between man and nature, interconnection of all things, and following the natural course?”

"If this method succeeds, the land of Yizhou will surely be fertile, and the people of Yizhou will prove to the entire Jian'an Dynasty that man can conquer nature without fear of nature!"

"What a great example of not fearing nature, man can conquer nature!"

The students cheered loudly, tears welling up in their eyes and noses aching. This moment, which was like witnessing the glory of ideology, culture and history, made them all feel overwhelmed and filled with mixed emotions.

"So, Brother Zhu, who came up with this idea?" A student took the opportunity to ask, "It is so detailed and bold, could it be that a mountain immortal really told Prefect Liang in a dream?"

"Hahaha!" Zhu Xiaobiao couldn't help but burst into laughter. "Where is the mountain immortal? If there really is a mountain immortal, would he tolerate us digging the mountain?"

"Then..." The students couldn't help but get excited, "What kind of person came up with this idea?"

"Well, this was actually figured out by a talented man named Li Bing, who used the geographical advantages and phenological laws of mountains, rivers and streams."

Zhu Xiaobiao smiled and said, "To benefit the people, it is far more than just reading some books of sages. The books of sages teach you to know shame and etiquette, but if you want to benefit the people, you should experience it with your heart, observe it with your eyes, understand the difficulties of the people, and comprehend what the people need. This is the right way."

He bowed slightly to the students, his eyes bright, "Jian'an was just established, and there are still places that are deeply trapped in suffering like Yizhou. I hope that when you are on the list of successful candidates in the future, you will remember what you feel and think today, use nature, transform nature, and make our Jian'an Dynasty a place of blessing, which will last for thousands of years and civilization will last forever!"

"May our Jian'an dynasty last forever and our civilization last forever!"

All the students raised their hands and bowed in return, shouting in excited and firm voices.

"Today's story of splitting the river ends here, but it will never end here." Zhu Xiaobiao also shed tears and said to the crowd, "Everyone, there is a long time to come, and we will meet again if we are destined."

After completing the ceremony, he looked up and was about to leave, but his eyes accidentally met Ji Songhua's gaze.

Zhu Xiaobiao nodded slightly at him with a natural smile, then turned and left.

I don’t know what Ji Songhua behind me was feeling.

He no longer cares.