Xi Yunfei's deliberate avoidance made Ouyang Yumei even more sad.

Walking in the corridor of the airship, I accidentally saw the hairpin on Yu Xianglan's head. Ouyang Yumei pursed her lips and tears rolled in her eyes.

Women's sixth sense is often very sensitive, and Ouyang Yumei's fault is naturally not avoiding the attention of Mu Ziyi and Yu Xianglan.

Especially Yu Xianglan, she is already a veteran, and she can be said to empathize with Ouyang Yumei's current state.

The two girls were a little confused. From childhood to adulthood, Ouyang Yumei had to compete with Yu Xianglan in everything.

Calligraphy is not as good as that, in terms of painting skills, tea ceremony, poetry and songs, he has won several cities back.

Even though Yu Xianglan is indifferent, she knows that Ouyang Yumei is a person who refuses to admit defeat. However, due to the relationship between the two families, Yu Xianglan did not show her competitive spirit. No matter what Ouyang Yumei, she is only obsessed with improving her calligraphy.

And this time, the competition between the two fell on a man.

A strange thought arose in Yu Xianglan's mind. This time, it should be considered that she won?

As soon as this thought arose, she interrupted her. Looking back at Ouyang Yumei, Yu Xianglan took the initiative to reach out and grab the other person's hand.

"Sister, look at the road carefully. This corridor is a bit narrow!"

Unable to find the topic, Yu Xianglan took the materials nearby. Mu Ziyi next to her looked at Yu Xianglan in surprise, then smiled, grabbed Ouyang Yumei's arm, and said, "Yes, this airship has a compact structure. In order to save space, the corridor is narrower. However, many places of this airship are very interesting. You will definitely find it novel and fun when you see it."

Ouyang Yumei was stunned for a moment, looked at Yu Xianglan, and then at Mu Ziyi. The tears that were already rolling in her eyes finally couldn't help falling down...

In the cabin, Xi Yunfei handed Xiao Yuzhang over to Empress Changsun, walked to the rest area and sat opposite Li Shimin.

He looked at Yu Shinan and Ouyang Xun guiltily. The two old men looked very good, but they didn't mean to get angry.

"Mr. Lang invited me and the other two to come today. What is going on? Could it be that I really came to enjoy the scenery, right?"

Yu Shinan was afraid of heights. After the airship took off, he glanced at the ground and sat in the rest area without leaving.

Ouyang Xun is better. Although he is a little older, he is not able to adapt to the pressure at high altitudes at the beginning. After a brief adaptation, he can now walk on flat ground in the airship.

Hearing Yu Shinan's question, Xi Yunfei smiled and took out a map.

Seeing this, Li Shimin was stunned at first, and then his face changed drastically. He recognized that this was the topographic map around Chang'an.

"What does Erlang mean?"

Li Shimin, the 195th Lord, was also afraid, mainly because the topographic map in front of him was very detailed, which was drawn bit by bit by bit by bit by bit by Zhuge Qing on an airship. There were even several marking information on the map.

Xi Yunfei glanced at him indifferently and explained: "Don't worry, Your Majesty, I just want to discuss the location of the hydropower station with the two cabinet masters. As for this map, it was just for the convenience of positioning, and there was absolutely no other meaning."

Li Shimin's expression of believing you is a ghost. It is fake to be unafraid. If this map falls into the hands of the enemy country, Chang'an City will be captured in minutes. How can you not be afraid of Li Shimin, who has just experienced the Wei River Change?

Seeing his expression change inexplicably, Xi Yunfei spoke helplessly and comforted: "Let's do this, I'll let Mr. Xie go back and bring you a few good things to ensure that Chang'an City is as solid as a rock!"

"What good thing?"

As soon as he finished speaking, Li Shimin suddenly felt energetic, and there was no depressed expression just now, as if everything he had just pretended was made.

Xi Yunfei stared at him suspiciously for a while, and finally said angrily: "I will know then. I promise not to disappoint you, but you have to make sure that you cannot use them to attack other small countries before the Railway Department is established."

Li Shimin's eyes lit up, and it would be fine if Xi Yunfei didn't say it. If he said so, it must be a real good thing. Great Good, Great Good. Li Shimin nodded happily, and promised that the construction of the Railway Department would be given priority.

To appease Li Shimin, Xi Yunfei and Yu Shinan and the other two elders talked about the idea of ​​building a hydropower station.

Yu Shinan knew more about this aspect than Ouyang Xun. At this time, he heard that Xi Yunfei was going to build a hydropower station near Chang'an. He was happy and took the initiative to be a lobbyist for Xi Yunfei and helped introduce the various advantages of the hydropower station.

Ouyang Xun was a little confused at the beginning. When he heard that the hydropower station could control the flood peak and regulate the water volume of rivers in various seasons, even though Ouyang Xun was a little unhappy with Xi Yunfei, he couldn't help but praise Xi Yunfei's move for the benefit of the country and the people.

As the emperor, Li Shimin naturally had to participate. Since the first year of Wude, the Tang Dynasty had to undergo several baptisms of droughts and floods almost every year. Not to mention far away, he said that this year, Henan and Jiangnan Road caused huge losses due to floods, direct or indirect economic losses and casualties, and even shook his throne.

"Mr. Lang, I heard before that you used cement to build dams, which is the kind of gray produced in Duke Lu's mansion?"

Ouyang Xun suddenly remembered something and said, "If possible, can you move a portion of cement first and let the water department try the effect in Jingshui and Weishui around Chang'an?"

Upon hearing this, Xi Yunfei said curiously: "What do you think of me?"

Ouyang Xun nodded slightly, pointed to the map on the table, and said, "Look at these rivers, the terrain is low, and there are mountains on both sides. As you said before, it is most suitable for storing flood peaks... The places downstream are different. There are flat arable land on both sides, and floods occur every year. These places are the most affected by the disaster. If possible, you might as well build dams in these places now. When the ice and snow melt in the spring of the next year, you can roughly determine which river channel is suitable for renovating a water storage lake and which one is more suitable for building a flood control embankment..."

Listening to Ouyang Xun's talk, Xi Yunfei was stunned at first, and finally smiled and said angrily: "Are you resigning from your post? Why do I listen to your opinion? This is a different way to ask me to help you repair the flood control embankment. Even if you want to determine the location of the hydropower station, you don't need to repair the downstream embankment first. If you really control the flood peak, even if there is no dam downstream, it is actually safe. Don't think I am a three-year-old child and don't know anything!"

"...uh, this...hahaha, my husband is worthy of being a husband. My actions are not an offense. It is really only a few months before spring begins. When winter passes, the melted ice and snow turn into a flood and rush down. It is really a waste of money. I have to do it. I also ask my husband to agree to the safety of the people in the world!"

Your uncle is indeed your uncle. You said so. I can’t stand by death, right?

Xi Yunfei glanced at him speechlessly, calculating the output of the cement workshop in his mind. Although the cement production of Cheng Yaojin's family is high, it is now in short supply. It seems that we have to find more partners in Chang'an and open more cement workshops.

Understanding this, Xi Yunfei looked up at Yu Shinan and Ouyang Xun, blinked his eyes and said, "Since the two parents are so concerned about the people, that kid cannot be too ruthless. However, if you have cement, you still have to worry about it. I don't care whether you lose or make money at that time, but you can't lose my 20% of the profits in the cement workshop every year."

Xi Yunfei was too lazy to participate in the affairs of the court, so it would be better to let Yu Shinan and Ouyang Xun worry about it. As for the secret recipe of cement, Xi Yunfei did not hide it. This was just a small amount of money for him, whether it was worth it or not.

The reason why we want profits is just to make Cheng Yaojin feel a little more balanced. After all, the Cheng family will give Xi Yunfei 20% of profits every month. We can't avoid it if we get here.

However, to Xi Yunfei's surprise, Yu Shinan and Ouyang Xun stood up when they learned that Xi Yunfei was going to cooperate with them to open a cement workshop, and then they were full of surprises on their faces, as happy as if a big pie fell from the sky.
Chapter completed!