Li Yuanai was not surprised by Li Zhi's words.

Since Hou Junji pacified Gaochang and Li Ji defeated Xue Yantuo, Li Tang began to enter a new round of dormancy.

This is also the reason why the Tang Dynasty was able to emphasize both civil and military achievements.

Li Shimin was not like Qin Shihuang and Emperor Wu of Han, who had the foundation of the six generations of reigns of ruthlessness and Wenjing's rule, and could launch large-scale battles without any scruples.

Every time there was a conquest, the Tang Dynasty would lie dormant for a while and accumulate energy.

If there is no specific goal, Li Shimin, who has worked hard for most of his life, will inevitably turn to luxury and enjoy life. Once he has a goal, he will work diligently as if he has a different person.

Li Shimin is obviously in the second state now.

Li Yuanai said: "I dare not say anything else, I promise that this sluice will not be able to make any mistake."

While they were talking, Li Shimin strode in. When he saw Li Yuanai, he smiled and said, "Sixteen is here too? Just save me from letting you summon you into the palace."

Li Zhi first gave up his position and saluted Li Shimin together with Li Yuanai.

Li Shimin waved to Li Zhi's seat before him and sat down, saying, "What are you talking about!"

Li Zhidao: "About the sluice!"

Li Shimin immediately came to his spirits and said, "How? This time, not only does the grain be transported to Guanzhong, Luoyang, but also to Zhuo County. Especially in the southern section of Yongji Canal, where it is often blocked and it is difficult to transport grain ships. If the sluice gate is available, I plan to build a dam upstream of Yongji Canal."

When Li Yuanai heard about Yongjiqu, he suddenly thought of such a piece of knowledge in his memory.

Opening the canal is a great achievement, but Yang Guang’s biggest problem is that he likes to be self-righteous and is good at being an outsider to command his experts.

The Yongji Canal diverts Qinshui to the south and connects to the Yellow River, and the Zhuojun to the north is a waterway running through the north and south, which is very important.

Especially the southern section of Yongji Canal, the most critical point is that the terrain is particularly complex. Yang Guang used his whimsical thinking and started construction of hundreds of thousands of projects and forced excavation. Not only did he forcefully dig, but he also had to dig wide and large, and he could dig until he could understand the dragon boat so that he could show off his might and travel around the world by boat.

When the construction started, an expert who was proficient in water conservancy suggested to Yang Guang that not digging like this would destroy the foundation of the canal, causing silt to settle and block the river channel.

Because opening the canal to force the direction of water flow is an act of destroying the natural ecology, it is just for the benefit of the world, and it has to be done.

Yang Guang's dragon boat was too wide and too big. The passable dragon boat dug by Yongji Canal would destroy the local ecological environment exponentially, not only losing the basic purpose of opening the canal, but also leaving huge hidden dangers.

Yang Guang ignored these things, disdained this statement, insisted on his own and stubborn.

Therefore, the Yongji Canal was opened by more than one million labor stations in various counties in Hebei. The canal, which consumed countless manpower and financial resources, began to be blocked in just a few years, seriously affecting the smooth flow of the canal.

In Li Yuanai's memory, the Tang Dynasty tried all his best to do this messy southern bank of Yongji Canal, not only did he continue to carry out dredging activities endlessly, but he tried various methods, but he gained little results. In the end, he had to cut off his arm and abandoned the southern section of Yongji Canal opened by Yang Guang. He followed the correct route chosen by Cao Cao in the late Han Dynasty, diverted Dan Water and Ji Wei Water to solve this problem.

As he thought about it, a beautiful face appeared in Li Yuanai's mind and a smile appeared on the corner of his mouth.

That was his first girlfriend, commonly known as first love.

The two studied in the same architectural university, but their majors were different. He studied architectural design, while she was in water conservancy and construction engineering.

In order to make her smile, when she was worried about her graduation thesis, he picked up a thick book about water conservancy construction projects and chewed it hard.

This has led to a lot of knowledge that does not belong to your own professional...

The way to use sluice gates to connect the canal is also due to this past incident.

"Hey, sixteen, sixteen..." Li Shimin raised his voice, saw Li Yuanai come to his senses, and asked, "What are you thinking, laughing like that..." He didn't know how to describe it for a moment.

Li Yuanai said: "I was distracted when I thought of some things. I was not suitable for building embankments to increase the water level by sluices and allow grain ships to pass through. My brother learned about the situation of Yongji Canal. In order to pass the dragon boat, Yang Guang forced the river channel to widen. There are two major disadvantages of overly wide river channels. First, waste water resources, causing water resources to be quickly lost. Second, it will lead to accumulation of silt and sand. If the river channel is wide, the water flow will be insufficient, which is not enough to drive the silt and sand at the bottom of the river, which will only make the silt and sand accumulate more and more. The dam sluice is not omnipotent, and it is also impossible to make the situation happen in this situation. Especially if the river channel is too wide, it is also a big test for the construction of the dam. I still need to personally investigate whether the Yongji Canal is suitable for building a dam."

Li Shimin was stunned for a while. Li Yuanai said it too in detail, so that he, an outsider, could understand clearly, and sighed: "It's really a talent to make you the Minister of Works. Secretary Yan is not as good as your eleventh."

Li Yuanai said humbly: "You can't say this, you specialize in skill. Shangshu Yan..." He wanted to say that he was good at architecture, but it's easy to say anything else. Architecture is his own profession, unless it's at the level of Yuwen Kai. Although Yan Lide had extremely high architectural attainments, he was far from being convinced. He paused and said: "He is better than his brother."

Li Shimin was ridiculous and crying.

Li Zhi also chuckled.

"Look at what you can do!" Li Shimin said: "Anyway, the canal will be handled with you with full authority. If I expected it, as long as Yongaisuwen stabilizes the Goguryeo court, he will invade Silla. At least one year, at most three years. We will send troops to Goguryeo, and the smooth flow of the food route must be guaranteed."

"As the saying goes, before the troops move, food and grass go first. Sixteen, if you can solve this problem, recover lost territory and destroy Goguryeo, you will be the first hero."

Li Yuanai felt the pressure doubled, and swallowed and said, "I am afraid I won't be able to do it."

Li Shimin narrowed his eyes and said, "Brother Wei thinks you are good. Brother Wei can see that you are a kid who is the ox, or the lazy one. You have to use a whip to whip. If you don't whip, you will do things more beautifully than anyone else."

Li Yuanai stopped talking immediately.

Li Shimin casually looked through the memorials reviewed by Li Zhi, nodded with satisfaction, and said, "These fathers will check these fathers again in the evening. The prince and Xiao Yizi will have their own meals later. There is no need to wait for the father. The father will take your sixteenth uncle to Xu Chongrong for meals."

Li Zhi smiled knowingly and nodded and said yes.

Li Yuanai was inexplicably surprised. You had a meal with your concubine, and what did you ask me to do with this light bulb?

He dared not ask or say.

Thinking that there was still something that persuaded Li Shimin to let Li Zhi enter the Eastern Palace without doing so, he could only follow him quickly.

The Anhe Palace where Xu Chongrong lives is some distance from Lizheng Hall.

Li Shimin and Li Yuanai are one in front and one behind.
Chapter completed!