Yu Wen Tian Xia in the Sui and Tang Dynasties

Yuwen Chengdu saw Chu Qiao and Zhang Chuchen looking at him nervously, and couldn't help but laugh and said: "You don't have to be nervous, I'm not angry, I think you are all too worried, although I have a widow's disease, but it doesn't affect the great cause much, these days, I have been busy with military and political affairs, and I rarely come to see you, I originally thought you would complain, who knew that you would say that, then I will come less in the future!"

Yuwen Chengdu said, turned around and left, Chu Qiao and Zhang Chuchen said in unison: "Don't!"

Yuwen Chengdu turned around and looked at them with a playful expression: "Two little ladies, what do you want me to do?"

Zhang Chuchen's beautiful eyes were filled with water: "My lord, we just hope that you won't miss your great cause because of us, but we didn't say that we wouldn't let you come, if you don't come all the time, what is the difference between us and the palace maids who are imprisoned?

Yuwen Chengdu stretched out his hand and stroked Chu Qiao and Zhang Chuchen's fair-skinned and tender faces: "My two beautiful girls, don't worry, in a few days, I will set up a banquet and marry you all into the family one after another!"

A sweet smile appeared on Chu Qiaoyan's peachy face: "Husband, I can feel your hard work." But now that this is the case, why bother with the name, as long as you have me in your heart, it is the same as being a wife and a concubine!"

Zhang Chuchen also smiled: "Husband, as long as you can treat me well, I don't care what my name is!"

Yuwen Chengdu smiled and nodded, but he had already made a decision in his heart, and he said: "In a few days, I will tell Mi Shu to take you into the room! Hey, since I, Yuwen Chengdu, have become the lord, then I have to have someone to make my subordinates feel at ease, you have to help me in the future!"

When Chu Qiao and Zhang Chuchen heard this, they first glanced at each other, and then the two of them smiled and said, "Husband, we should be the best for this favor!"

Yuwen Chengdu nodded with satisfaction, and suddenly remembered something, and couldn't help but ask Chu Qiao: "Ah Chu, why is your room so warm?"

Chu Qiao smiled and pointed at Zhang Chuchen: "Husband, you still have to ask Chuchen, this is what she did, she knows better!"

Zhang Chuchen took Yuwen Chengdu around their courtyard and walked around, Yuwen Chengdu noticed that the four walls of their room and the ground were built with a layer of bricks, forming a hollow tunnel, which can be heated air, and the underground tunnel outside the room burned red coal, and the heat was transmitted to the whole room along the hollow four walls, and the room was warm.

Yuwen Chengdu suddenly remembered that this was the earth-burning dragon of the later generations, which was similar to the burning kang, but the burning kang was just a bed, and the burning earth-burning dragon was aimed at the entire room.

Yuwen Chengdu just wanted to say good, but suddenly thought that burning coal has a big drawback, if the room is closed, it is easy to be poisoned by gas.

Yuwen Chengdu frowned: "Out of the dust, do you know that it is easy to be poisoned like this!"

Zhang Chuchen pointed to a few holes on both sides of the house: "Husband, these smoke exhaust pipes can discharge those poisonous gases!"

No wonder Yuwen Chengdu just stayed in the house for half a day, and did not feel a trace of unpleasant smell, the coal in this period contains sulfur, and it will emit a foul smell when burned, and it seems that it is discharged from the pit by the smoke exhaust pipe.

Yuwen Chengdu smiled and asked, "Out of the dust, how did you come up with this? Why have I never heard of it?"

Zhang Chuchen said with a smile: "Husband, I used to live in Yan Kingdom, where the winters are relatively long, and big families make this kind of earth-burning dragon and use charcoal for heating!"

Yuwen Chengdu nodded, and said secretly, and then he asked: "Out of the dust, why don't we arrange our entire mansion with a fire dragon, and it will be good to keep warm every year in the future!"

In this era of the Kyushu continent, the cotton does not know where it is, and now the Kyushu continent only has kapok that can be filled with pillows, and there is no cotton that can be weaved.

Yuwen Chengdu came to this era and found that this Kyushu continent was really much colder than it was in the 21st century, but fortunately, the Sui Kingdom was southerly, and it was still relatively warm.

He was really a little worried about the homeless people and tun people who didn't have mink fur and cotton clothes to keep out the cold, as well as the people who were far away in Yan Kingdom, how did they spend the winter?

I'm afraid that many people will freeze to death every year!

Zhang Chuchen smiled bitterly: "I've only been back for a few days, and I've only made my own small yard, and I haven't had time for other yards yet." "

Yuwen Chengdu heard her say this, and said with a smile: "Well, then you will carry out this work from tomorrow, and strive to finish it as soon as possible, so that our whole house can be warmer!"

Yuwen Chengdu also thought about giving priority to burning the earth dragon in Mi Shu's wedding room, after all, she was weak, if she didn't burn the earth dragon, just relying on the charcoal basin would probably not be good for her health.

Of course, Yuwen Chengdu also wants the entire Chang'an, and even the entire northern people to build a burning dragon, anyway, there is no shortage of coal resources in the Kyushu mainland, there are a lot of them!

It's just that there is still work to be done to achieve such a goal.

However, Yuwen Chengdu thinks that it should be soon...