The appearance of the imperial palace's back garden has long since changed.
The potato and sweet potato fields in the northeast corner were getting bigger and bigger, and Liu E somehow couldn't let go of these high-quality seeds that had been planted in Sinong Temple.
Hundreds of acres of land were planted with potatoes and sweet potatoes, but she still insisted on expanding the planting area in the backyard.
For her, the back garden is just the garden of heaven, a dispensable garden.
In comparison, potatoes and sweet potatoes were much more important. As for Ye An leading the palace men to dig in the ground, this was not a big deal in Liu E's opinion.
Lan Jizong was a little confused, and Chen Lin was furious when she saw Ye An personally leading the officials to dig the land.
She wanted to step forward to reprimand Ye An, but was stopped by Lan Jizong, who made gestures at Liu E with his mouth raised. Only then did Chen Lin realize that the saint had already seen all this.
Since the saint didn't stop him, he shouldn't have spoken. Chen Lin stood back quietly. He knew who was the master of the harem and the master of Song Dynasty.
If you dig the soil casually in the back garden, you may find something wrong, so the place where Ye An dug was prepared by Lan Jizong, but it was a pity that there was a peach forest on the ground.
Ye An rolled up his trouser legs, and Zhao Zhen also rolled up his trouser legs. The little emperor had really thin skin and tender flesh, and of course he was similar.
Working always involves sweating. Li Duanyi was panting and wiped the sweat from his forehead with a sweat towel. He had never suffered such a crime since he was a child.
But looking at Ye An's skillful appearance and Zhao Zhen's hard-working attitude, Li Duanyi found that he had nothing to complain about. After all, their status was much more noble than his own.
Liu E sat in the pavilion and watched from a distance. Lan Jizong beside him whispered: "Sage, is Ye Hou training for officials?"
Liu E glared at Lan Jizong and said dissatisfiedly: "The inner west head of the imperial medicine courtyard in the palace has many body-building techniques. Why does Ye An need to send officials to do the work? Look at the ditch on the ground before talking."
Lan Jizong and Chen Lin watched for a long time but couldn't figure out the reason. Liu E frowned and said: "This is the trend of the Yellow River. If you think about it, you should know that it is the homework left by Ye An to the officials!"
Following Liu E's reminder, Lan Jizong and Chen Lin discovered the mystery. It was not that they didn't know the trend of the Yellow River. After seeing that the ditch in the distance really looked like a "ji" shape, they suddenly realized it.
"A saint has good eyesight, so a servant can't see it. Do you think Ye An really knows the fact that the sediment in the Yellow River is getting worse and rising every year?"
Liu E shook her head slightly: "I can't say for sure, maybe I know, maybe it's Hu Xi, you'll know after seeing it."
For her, Ye An's classes were becoming more and more interesting. He even brought the officials to the back garden to demonstrate important tasks such as river management. Even she couldn't help but be attracted by it.
The ditch representing the Yellow River was quickly formed. After all, it was not a big project, it was just a simplified restoration.
When the gate connecting Houyuan Yanchi was opened, the water in the pool poured out, forming a stream along the ditch dug by Ye An and others. Although it was far from comparable to the Yellow River, the scene of rushing out was still impressive.
In amazement, the water splash wet everyone's shoes and socks, and Zhao Zhen and Li Duanyi were very excited.
On both sides of the ditch, there are wooden houses, lines representing fertile fields, and seedlings decorated with green grass. They look so lifelike from a distance that even Liu E found them incredible.
But the water in the pool soon became turbid. This ditch was completely dug in the soil. The chamberlain had just reminded Ye An and others that if they want to dig a small ditch with a meandering water source, the bottom must be lined with pebbles, so that the soil can
It will be strong and not easily washed away by pool water.
It was also at this time that Zhao Zhen and Li Duanyi understood the reason why there was so much mud in the Yellow River. Of course, the more important thing was that Ye An kept kicking the mud upstream into the water. The small pieces of mud disappeared quickly in the water, while the large ones disappeared.
It is constantly rolling forward under the impact of the water flow, getting smaller and smaller, getting denser and denser...
Ye An looked at the unwillingness in the eyes of the little emperor and Li Duanyi.
In Zhao Zhen's eyes, this small ditch was the Yellow River in the Song Dynasty. Whenever the water in the ditch flooded to the edge of the land under the impact of the pond water, he could think of the victims on both sides of the Yellow River.
Ye An smiled and said: "Guan family, you can start building the dam now, let's give it a try?"
So the two young men began to protect their hard-earned "earnings of labor" and built the dam using what they thought was the strongest method.
Soon embankments with stones appeared on both sides of the ditch, but Ye An did not intend to let them go. Instead, he used a shovel to destroy the upstream gate. The lower ditch instantly received the huge impact of the pool water...
………
A large amount of sediment was carried down and the ditch became increasingly turbid, overflowing the dam they had built so hard, and eventually forming a large floodplain area on both sides of the ditch.
This was expected by Liu E, but Lan Jizong and Chen Lin were furious. In their opinion, this was too cruel for the officials.
If we want to talk about floods, we should talk about it carefully. Why do we have to attack the officials again and again?
Looking at Zhao Zhen who was still stubbornly cleaning up the silt, Ye An said in a deep voice: "Guan family, the silt cannot be cleaned completely, because there will be a steady stream of silt hitting the upper reaches, and the flooded areas will only become more and more."
"What if there is no silt upstream?"
Ye An shook his head: "No, this is determined by the quality of the soil. The fewer trees, the easier it is for the sediment on the land to be carried away by the river. The only way is to plant more trees to protect the water and soil to prevent loss, but where is the upstream
?”
Zhao Zhen's face became ugly, and he pointed at the curve and said: "The front part is the land of the Dangxiang people, and the back part is the land of the Liao people!"
This is an obvious thing. At least the little emperor has a very clear understanding of geopolitics.
"The officials are right, so we can only rely on ourselves to control the river. In the Song Dynasty, we mostly used the method of "consolidating embankments" to regulate rivers. This is what the officials just did. Although it saves money, it will be dangerous once the flood season arrives.
.
The other method is to "beam water and attack sand", which is more expensive and laborious!"
“What does it mean to use water to attack sand?”
Zhao Zhen was looking forward to it, and Li Duanyi beside him was also very curious. Ye An sat directly on the stone in the mud beside the ditch and said: "You should know that you should stabilize the river channel with dikes and strengthen the dikes inward as much as possible. This will make it easier."
It can narrow the river channel, increase the flow speed, improve the sand-carrying power of the water flow, and use the strong water to brush the deep river channel to solve the problem of sedimentation."
"This is a good method! It can be said to be a solution once and for all!"
But Ye An shook his head again: "But this method is more difficult and dangerous. Although "water beaming to attack sand" seems feasible, to achieve the purpose of concentrating water flow, you must have a water beam with strong resistance to impact.
Dams are very difficult for large rivers, and in the final analysis it costs countless money."
Seeing Ye An's appearance, Zhao Zhen felt "evil grows out of fear" and said in a questioning tone: "This won't work, that won't work either, Ye Shidu, you must give me an explanation!"
Ye An did not expect that the young emperor would be so concerned about river management, and said with a heavy heart: "It seems feasible to control the river by consolidating the sand, but it is almost impossible to achieve now. The national power cannot be consumed in a land river, but it is feasible to widen the river and strengthen the embankments."
, but you must leave enough space as a flood discharge channel. When the Yellow River dam cannot support it, evacuate the people and open the floodgates to discharge the flood..."
"Are we going to watch the river flood the people's farmland?!"
Ye An nodded: "In the official family, some things can be changed, but some things cannot be changed, and it is beyond the reach of manpower!
Even if you are an emperor, you cannot change the fact that the Yellow River is flooding. Since you cannot change it, then accept it and learn to use effective methods to overcome it! This is your responsibility and the obligation you should bear! This is the emperor's responsibility.