Li Zhan was watching workers install mobile boardrooms in the square at this time. Now the interior is made of light wood. Li Zhan wants to try the sound insulation and amplification effects.

Just after the installation of the prefabricated house was successful, Li Zhan suddenly heard a sound coming from behind him.

"Zhan'er, who are you looking for to see you?"

When Li Zhan heard that it was Changsun Wuji's voice, he also looked back, but he didn't know if he didn't look at it. He was shocked when he saw it. It was Li Shimin who came. Why did he come here?

Before Li Zhan could recover, he immediately heard a voice coming from the front room: "Brother...heard me?"

The sound is very loud, and it can be transmitted for about a few hundred meters. This is the amplification effect in the prefabricated room. This effect made Li Zhan very satisfied. Li Shimin on the side said in surprise: "This sound is made by Cheng Qian in the house. It's very loud. I wonder if Cheng Qian was shouting loudly inside, and if he could hear the sound outside inside?"

After Li Shimin finished speaking, he walked towards the prefabricated house and wanted to go in and take a look. Li Zhan and Changsun Wuji immediately stayed by his side.

Li Chengqian continued to say in it: "Brother, can you hear what I say? You can't hear anything inside, you can only hear your own voice. Brother... Is there any sound outside?"

Just as Li Chengqian was smiling and happy to talk inside.

The door of the box was pushed open by Li Shimin, and he heard Li Shimin say, "You can hear what you say outside, and it's very noisy."

Li Chengqian was about to smile and answer: "Is that true...!" But when Li Chengqian saw Li Shimin, Li Chengqian was stunned at first and then called him father. Fortunately, Li Shimin waved his hand to Li Chengqian and asked: "You said a lot of things just now, can't you hear it?"

Li Chengqian looked at his father and said tremblingly: "Yes...yes...yes...you can't hear me, that...can I hear my voice outside?"

"It's very clear...and it's loud, okay...it's really good..." Li Shimin looked at Li Zhan behind him with a smile and said, "You've done a good job, it's really good..."

Changsun Wuji looked at Li Shimin and praised Li Zhan, and walked up and said, "This is not a place to speak..."

After Changsun Wuji finished speaking, Li Shimin understood. He looked at Li Chengqian on the side and smiled and said, "That's right... Then let's go to your home in Dunhuafang...!"

"As for the order..." Li Chengqian lowered his head and then secretly looked at Li Zhan. On the other hand, Li Zhan could only smile. What could he do in front of Li Shimin?

After a while, the group came to Li Chengqian's five-story building.

At this time, Li Chengqian's five-story building had been built. Li Shimin stood in front of the five-story building, looked at the small building about fifteen meters high, and nodded slightly and said, "This earthquake did not cause such a tall building to collapse. You can see the practicality of cement.

As an auxiliary machine, we will also let the Ministry of Industry buy cement vigorously in the future. In the future, our project will also use cement. I will also let the entire Chang'an, not... the entire Tang Dynasty paves cement roads.

In this way, our army can move quickly.”

He is worthy of being the emperor who came out of the war. He can see the benefits of cement roads at a glance. When one day cement roads really cover the entire Tang Dynasty, it will be very exciting.

....................................

When Li Shimin pushed open the door of the five-story building, he was shocked that the door actually had two pieces of yellow glass with a diameter of one meter.

You should know that the glass of the Tang Dynasty is still rare among the rare ones. Li Shimin didn't even have a few pieces on his hands. The gate of Li Chengqian was inlaid with a flat yellow glass with a diameter of one meter. To be honest, Li Shimin couldn't do it without being shocked.

"This...this...this is too extravagant." Li Shimin looked at Li Chengqian and frowned slightly.

"Uh..." After being yelled by his father, Li Chengqian looked at Li Zhan again and said, "It was my elder brother who gave me..."

"Zhan'er...I know you spoil your brother, but this... is too extravagant..." Li Shimin also said softly to Li Zhan.

Li Zhan said here, "Your Majesty, what's this? It's just two very ordinary pieces of glass. Let's go in and take a look...there are so many glasses inside."

"And..." Li Shimin was shocked.

Then, Li Shimin made great strides into Li Chengqian's five-story building. What impressed Li Shimin was that the building was really beautiful, with a lot of glass decorations inside, all of which were lifelike.

It made Li Shimin and Changsun Wuji unable to move.

Changsun Wuji said repeatedly: "Oh... Zhan'er, why did you get so much glass? Oh my God, it's really beautiful. There are at least millions of coins here."

"Well... I feel that it costs at least three million yuan." Li Shimin said with great emotion as he looked at a peach-shaped glazed work.

Li Zhan laughed: "If Your Majesty and Lord Sikong like it, take some of it, as these are not worth much to me."

Li Zhan’s glass works are actually defective. In addition to making paper and mining in Zhushan, Li Zhan not only found coal mines in Zhushan, but also quartz mines.

As we all know, this quartz stone ore is used to make glass, so Li Zhan found some methods to make glass and asked people from Zhushan to try to make it. If the glass can be made, Li Zhan can not only make a big profit, but also plant out off-season vegetables.

However, glass is not so easy to burn, so the glass is not burned, but a lot of glass is burned.

"Let's take it anyway..." Changsun Wuji looked at Li Zhan with some surprise.

Li Zhan smiled again and said, "Yes... you can take whatever you want, and you can take as much as you want. By the way, there are some upstairs, and better ones. I think Cheng Qian will put them upstairs."

"Go up and take a look..." Li Zhan's words made Li Shimin laugh and say something to Changsun Wuji.

Following a group of people upstairs, Li Zhanxiu made the spiral staircase of this five-story building. Looking at it from the first floor and the first floor, Li Shimin and Changsun Wuji took a lot of good things in the building, which made us Li Chengqian feel so painful.

But Li Chengqian never expected that when Li Shimin arrived at the highest floor of the five-story building, the fifth-story building really opened Li Shimin's eyes.

There is only one room on the fifth floor. This room is made of glazed glass, walls, roofs, and doors... Especially the door, which is a surround door, which opens one by one. You can look at the sky outside 360 ​​degrees, and walk out of the room and you will see a circular balcony. Standing on the balcony, you can overlook the entire Dunhuafang.

“It’s really beautiful…!”

Even Li Shimin was shocked by this scene.

Changsun Wuji stood beside Li Shimin and said, "I said, why didn't the prince let me come up? It turned out that this place is really beautiful!"

"Haha..." Li Shimin turned around and looked at Li Chengqian on the side with a smile and said, "Crown Prince... Let's be my palace in the future. What about you, go and change the place."

"Ah...!" Li Chengqian was stunned.

Li Zhan laughed at this time: "Your Highness the Crown Prince is very happy."

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Chapter completed!