After being named the Grand Sima, Yang Guang told Yang Jian about his Grand Canal plan the next day, and Yang Jian immediately made a decision when he heard this.

Yang Jian looked at the map of the Grand Canal drawn by Yang Guang and said, "The Grand Canal, the Grand Canal!" The canal has become one in the Central Plains, although it may cost a lot of money, but it has to be done, it must be done. ”

"Father, the canal needs to be done, first build the Guangtong canal, as long as there is a connection between Chang'an and Luoyang, Chang'an can avoid falling into a food panic as before, and it can also better activate the potential of Luoyang."

Yang Yong thought for a while: "Daxing City is still under construction, but there are more than one manpower to build the Guangtong Canal?" ”

"Erchen should be able to calculate it."

"Then do it."

"Erchen plans to lead Yu Wenkai to go through the route first and find the best route first."

"Go ahead, I'm ready."

Yang Guang took the order and left, Yang Jian turned around again to look at Yang Guang's map like this, the burning desire in his eyes erupted when no one was around, and he laughed alone and said: "Amor is really a genius, a genius, where do others dare to think about such a large-scale project, let alone do it, but he dares to think, and he dares to do it with confidence, although the cost is huge, but Amor has always made money, can save money, I want to see how he plans to do it this time." ”

Yang Guang went home to pack his things, and after explaining the matter of Daxing City to Li Yuan, he took Yu Wenkai and set off the next day, and in order to insure Yang Guang, he went to the barracks and led three hundred elite soldiers out.

This is the first time Yang Guang has gone out after crossing over.

On the way to Luoyang, Yu Wenkai rode a horse by his side.

Yu Wenkai asked as he walked: "Your Highness really plans to dig the Guangtong Canal?" ”

"Naturally, what do I say about this without digging it?"

"But His Highness hasn't made an on-site inspection, how can I be sure that I can get through."

"Isn't this just going to take you on a field trip?"

I can't tell you that that's how it was built in history.

First to the northwest of Daxing City, the Wei River, Yang Guang said to the Wei River: "Yu Wenkai, I have calculated, from here to divert water, slightly follow the Han Dynasty Cao Canal old road to the east, to Tongguan into the Yellow River, more than 300 miles long, because there is the Han Dynasty Cao Canal old road, so the excavation route can basically be followed, but because we need to dig more wide to make the ship feasible, so the route must be more careful." ”

"Your Highness thinks about it, but the excavation of the canal is a huge project, and the maintenance after excavation is often more expensive than the cost of excavation, and it must be maintained for a long time, otherwise it will soon be silted up."

"Do you have any good ideas?"

"I don't have a good way, but does Your Highness know Zheng Guoqu?"

"Of course I know."

"Zheng Guoqu was built by the Qin Dynasty, but Zheng Guoqu can still be used today, Your Highness knows why?"

"I want to hear about it."

"Because the Zhengguo Canal flows through the regional area can irrigate the farmland well and feed a lot of people, so if the Zhengguo Canal is silted, then the people along the coast will be short of water, and the farmland will not be able to irrigate.

Yang Guang understood what Yu Wenkai meant, according to the technology of this era, siltation is inevitable, only governance, and governance must not rely purely on the government, only by linking it with the people's livelihood can the people also spontaneously have the desire to govern, so that they can govern for a long time.

When it comes to people's livelihood, Yang Guang suddenly thinks of dams, modern dams that hold water into lakes and can generate electricity to fight floods and irrigate farmland.

At present, power generation has not yet been invented, and it is not possible to build dams in these great rivers, but it seems feasible to build a dam on such a newly dug canal.

According to modern canals, building a dam in a canal is almost like taking off your pants and farting, which is useless.

But this era is different, because the Central Plains is flat, to build such a long canal needs close calculations, but where a place is not right, the water will not pass, but the middle of the dam allows a certain drop is much more convenient, and with the dam, the water flow will become more gentle, in this era without mechanized power, a smoother flow of water means that it will be more convenient when the current is reversed.

There will also be more water available, which will be good for people's livelihood and business.

Yang Guang piled up two river models with drops next to the Weishui River, and then used a wooden board to block the middle to fill the water and said to Yu Wenkai: "When the canal is selected, find a place with a slightly higher drop, build a barrage dam, and keep the water source, and when the upstream water source exceeds the dam set by the survival height, it will flow downstream, so that the upstream water source will be more out of thin air, and then dig the tributaries and introduce irrigation, what do you think?" ”

Yu Wenkai frowned and looked at the model, theoretically speaking, they are not capable of building such a dam, but considering that Yang Guang is now making a new material like cement, and the terrain of the area through which the Guangtong Canal passes is relatively flat, even if there is a drop, the drop will not be too big, and the strength requirements for the dam are not too large.

And because the canal has not yet been excavated, it can be built before it is opened, that is, it can be built on flat ground, which again reduces the difficulty of the project, so it seems feasible.

In the modern sense of the canal, the word is the key, the biggest role is to shorten the voyage, but the canal in this era is not, this is a people's livelihood project, the river word is the key, so that the lack of water and less river places have a stable water source, you can make the surrounding land fertile.

The Chinese people never waste an inch of land that can be used to grow food.

"Does Your Highness really want to do that?"

"I'm not sure if I haven't done it, but I think I can try to divide the Guangtong Canal into two or even three sections, with a dam in the middle, and as for how to sail the boat with the height difference, there is such a facility."

Yang Guang demonstrated to Yu Wenkai how to use water to make a lock staircase under the height difference of the dam, and because the drop is not high, even a staircase is enough.

Open the upstream gate, fill the lock with water, wait until it is as high as the upstream to pass, go downstream, release water in the lock, and wait until it is as high as the downstream to go.

Yu Wenkai looked at Yang Guang with a surprised face, he really didn't know how Yang Guang's head grew and he could actually come up with such a plan out of thin air.

"Let's check all the way and give it a try."

Yu Wenkai has never been a person who sticks to the rules, he nodded immediately, and the two of them followed the route all the way to check the past.

……

Two days after Yang Guang set off, Yang Yong returned to the court with a large army, this time the emperor prepared a good reception banquet for him, compared to the expedition can be much grander, Yang Yong also returned to the East Palace for the first time to take the crown princess to participate in the celebration banquet.

Even the crown princess herself didn't expect it.

At the celebration banquet in the palace, Yang Jian and Yang Yong explained that he should pay attention to the people's livelihood in charge of the land of Northern Qi, and Yang Yong responded very confidently, because Luozhou was the city of Northern Qi back then, and Yang Yong was ready to leave for Luozhou after receiving the order, and he still went uncharacteristically with only the crown princess.

Yang Jian was very pleased with her son's transformation, but Queen Dugu just smiled on her face, she could see why Yang Yong did this, she was now completely disappointed in Yang Yong, the country is easy to change, and it is difficult to change.

Yang Jian explained to Yang Yong: "Amand went to Luozhou two days ago, since you are going to wait for Luozhou, the two of you can still meet." ”

"Erchen understands."

Early the next morning, Yang Yong set off with his guards and the crown princess, and unexpectedly, he did not ride a horse by himself but rode in the same carriage with the crown princess.

The crown princess had met the crown prince for several months since the last incident, and Yang Yong had been on the expedition for several months, and the sudden change of attitude made her at a loss.

Yang Yong took the crown princess's hand, which made the crown princess a little confused.

Gently stroked the back of the crown princess's hand and said: "Yuanzhen, I was ashamed of you before, I have seen a lot of this expedition, and I have figured it out, it was all my fault before, I hope you can give me a chance to change my ways, and I will be doubly good to you in the future." ”

A woman who has never been loved by her husband suddenly received her husband's love today, and she was grateful for a while.

"Your Highness, what you said is true?"

The crown princess's eyes were red for a while, and Yang Yong nodded with great determination: "Naturally, it's true." ”

The crown princess immediately snuggled in her husband's arms, and Yang Yong hugged the crown princess.

Yang Yong is a true adventurer, he can always show his adventurous instinct at any time, it's time to show real skills.

"Your Highness...... Outside is the army of guards, I'm afraid it's not appropriate. ”

Yang Yong didn't look at the occasion, Yun Luo was favored only when she catered to her, and the princess hesitated for a while.

Yang Yong disagreed: "The sound of horses' hooves, the sound of wheels, you just try to keep your voice down, don't you feel exciting in such a scene?" ”

The crown princess was frightened, but did not say anything more.

She was mentally prepared for everything, but she didn't expect that time would pass like a white horse, and everything would be over in an instant.

The spring breeze is proud, and His Royal Highness the Crown Prince comes down quickly and goes quickly.

Yang Yong was half-lying in the carriage, and said to the crown princess with appreciation: "You did a very good job this time, but you didn't make a sound." ”

The crown princess was surprised, even if the relationship between the old husband and wife was not very harmonious before, but they didn't know the roots.

It's just that I didn't expect that the speed of human beings really has no limit, it is faster than fast.

Equilibrium exists between all things, although it is fast, but it also saves time.

The crown princess was quite helpless, but after thinking about it, talking is better than nothing, it's just faster, so what's the matter?

After Yang Yong sorted everything out, he walked out of the carriage and shouted, "Stop." ”

The team stopped, Yang Yong was full of spirit, stood in front of the carriage and said: "The king of Jin is walking to explore the way of the canal, the speed is slow, follow the route of the king of Jin, speed up, we will catch up and meet the king of Jin." ”

(End of chapter)