Qin Yu smiled and nodded, and then entered the palace gate, this time Qin Yu didn't need anyone to lead him, he came once, although he didn't find the way, but he also knew where to find the eunuch and palace maid to lead the way.

I found a palace maid casually, and the palace maid passed it on, Qin Yu was waiting here, not to mention, seeing Li Shimin was really in trouble, this wait was an hour, just when Qin Yu was bored, Yang Gonggong's unique voice sounded, "Qin Gongzi." Before the sound of the person arrived, he came.

Qin Yu was slightly stunned, then got up, looked at Gonggong Yang who came to the door with a dusty look, and then hugged his fists and smiled, "I've seen Gonggong Yang." ”。

"Qin Gongzi, Bixia was still talking to you just now, who would have thought, Qin Gongzi is here, hurry, go with the miscellaneous family to meet Bixia." Yang Gonggong said with a smile.

Qin Yu smiled and nodded, and then followed Yang Gonggong towards the Lizheng Palace, that's right, it is the Lizheng Palace, Qin Yu really can't understand that this Li Shimin Weishenme is always willing to see himself in the Lizheng Palace.

After coming to the Lizheng Palace, Qin Yu stepped forward to salute, "The grass people have seen Bixia, the queen mother." ”。

Li Shimin seemed to be in a good mood, and said with a smile, "Sit, sit down and talk." ”。

Qin Yu didn't shirk it, there was really no need for this, it was tiring to stand and talk, and Qin Yu was naturally willing to sit if he could sit.

"Yunfei, are you here today to see the quality or something?" After Qin Yu sat down, Li Shimin asked.

"Back to Bixia, the grass people are here to visit the princess, and they have something to tell Bixia." After Qin Yu finished speaking, Li Shimin had such an expression, Qin Yu was a little inexplicable, but the eldest grandson queen glared at Qin Yu, and Qin Yu was even more confused, but after a while. Qin Yu understood, and sighed secretly, "I'll go, Li Shimin and Empress Eldest Sun are betting on me." ”。

"Yunfei wants to ask about the winery?" Li Shimin frowned and asked.

"The winery?" Qin Yu was slightly stunned, then shook his head and said, "What the grass people want to say is the fire kang. ”。

"Ondol?" Li Shimin looked at Qin Yu suspiciously, and asked, originally Li Shimin thought that Qin Yu wanted to ask about the situation of the winery. But the matter of the wine shop, I can't find out at all after checking it, how can Li Shimin answer, but who would think that what Qin Yu said is not this at all.

"Yes, Bixia. The kang is used to keep out the cold in winter, as long as you burn some firewood at night. In winter, you won't feel cold at night. In this way, the people can survive the winter in peace. Qin Yu bowed, and then spoke.

Li Shimin's eyes suddenly lit up when he heard this, he got up suddenly, stared at Qin Yu tightly, and asked in a rather excited tone, "Yunfei." Are you telling the truth? ”。

Qin Yu nodded solemnly, and then took out the production drawings of the fire kang and handed them to Li Shimin, who took the drawings. I watched it several times very carefully, but unfortunately there are only production methods and precautions on it, and Li Shimin can't understand it at all.

Seeing this, Qin Yu smiled slightly, and then said, "Bixia, this fire kang is true, Bixia might as well try to make one, and you will know the magic of this fire kang." ”。

"Okay, Yunfei, it's up to you to do this, just make a fire kang for me in the palace, if it's really the same as you said, I will be rewarded." Li Shimin said very solemnly.

"Yes, Bixia." Qin Yu bowed down to receive the order, and at this time, Li Shimin instructed Gonggong Yang, "You go and help Yunfei do this, there is a shortage of people to find people, and there is a shortage of things to find things, so be sure to make a fire kang as soon as possible." ”。

Gonggong Yang hurriedly bowed down and responded, "Yes, Bixia." ”。

When Qin Yu heard this, he immediately got up, bowed to Li Shimin and Empress Changsun and said, "The grass people are going to build a fire kang, it won't take too long, if the speed is fast, it can be done in an hour." ”。

"Okay." Li Shimin nodded with satisfaction and spoke.

Qin Yu and Yang Gonggong immediately left the Lizheng Palace, and after coming outside, Qin Yu thought for a while and said, "Yang Gonggong, I want to trouble you to find some masons to come over, no, let's call all the masons over, although they don't need so many people, they can learn and promote it." ”。

"Okay, the miscellaneous family is going to gather people for Qin Gongzi, I don't know where Qin Gongzi is going to build a fire kang?" Gonggong Yang smiled and nodded, and then asked.

"This." Qin Yu pondered for a moment and then said, "Just find a room." ”。

"In that case, how about Gongzi Qin build this kang in the house of the miscellaneous family?" Gonggong Yang asked with a smile on his face.

Qin Yu was slightly stunned, and then understood that this Yang Gonggong was preparing to be the first to try it, and he also had the meaning of pleasing Li Shimin, so he nodded and said, "Of course this is no problem, but, Yang Gonggong, the palace does not need to make a fire kang, and there is more haode heating, which can ensure all-day heating, and the house is guaranteed to be as warm as spring." ”。

"And this kind of goodie?" Grandpa Yang's eyes lit up when he heard this, Qin Yu nodded with a smile, and then said, "Grandpa Yang, just find a room at random, as for the heating, Qin will tell Bixia when he arrives, I believe it won't be long before the palace can be fully heated." ”。

"Okay." Gonggong Yang nodded with satisfaction, and then said, "Gongzi Qin, please come here." ”。

Qin Yu nodded and then followed Gonggong Yang to a palace where no one lived, and not long after, the masons in the palace came here together, Qin Yu looked at it, good guys, there are not a thousand but eight hundred.

Qin Yu immediately said some materials, and it didn't take long for the materials to arrive, Qin Yu began to give a lecture on how to make the fire kang, and there are also places to pay attention to the fire kang.

"Father-in-law Yang, go and invite Bixia, Bixia can light the fire when she comes." Qin Yu looked at the haode fire kang that had just been made, nodded with satisfaction, and then said to Yang Gonggong.

"Okay." Gonggong Yang smiled and nodded, and then ran to find Li Shimin, and it didn't take long for Li Shimin to come here with the eldest grandson queen.

After everyone paid their respects, Qin Yu stepped forward and said, "Bixia, the fire kang has been made. ”。

Li Shimin nodded happily. Then he said, "Let's light the fire, I want to see if this fire kang is so magical." ”。

Qin Yu immediately gave a look to a mason, and the mason immediately turned on the fire fold, lit the fire, and not long after, it burned in the stove, the pot was filled with water, and the firewood was burning little by little, and Empress Li Shimin's eldest grandson was watching outside. After a stick of incense, Qin Yu ordered someone to put out the fire, and then bowed down and said, "Bixia, you can go in and feel it now." ”。

Li Shimin nodded. Then he walked into the house, for a moment. Li Shimin was stunned. It was only a long time before the whole room became warmer, and it was obviously two temperatures outside, and he immediately smiled, "Okay, good." Very good, Yunfei. ”。

"The grass people are here." Qin Yu saw Li Shimin shouting to himself, and hurriedly bowed down in response.

"How long does this temperature last?" Li Shimin is Li Shimin after all, and he quickly thought of the crux of the problem.

"Back to Bixia. There is no problem with keeping one night, although the temperature will slowly get lower over time, but this speed is very slow, if you like to be hot, you can also continue to add firewood, so that you can ensure that it is always hot, but it is best not to be too hot, otherwise your mouth will be dry. Qin Yu hurriedly explained.

"Good, good." Li Shimin nodded with satisfaction, pondered for a moment, Li Shimin opened his mouth and said, "Yunfei has made meritorious contributions, the people of the Tang Dynasty will not have to worry about the cold winter from now on, I will make you the founding county today, how about it?" ”。

When Qin Yu heard this, he sighed helplessly, and said secretly, "How good it would be to have some benefits." Although Li Shimin was in a tone of discussion, Qin Yu also knew that he couldn't bargain with Li Shimin, so as not to lose his favor, he hurriedly bowed down and thanked, "Xie Bixia." ”。

Li Shimin nodded with satisfaction, and Empress Eldest Sun also nodded with satisfaction, at this time, Qin Yu continued, "Qiqi Bixia, there is still one thing about the grass people." ”。

"Say." Li Shimin said with a smile on his face, Qin Yu bowed, and then said, "Bixia, there is another thing that is better than the fire kang, which can ensure all-day heating." ”。

Li Shimin was stunned when he heard this, frowned, and said, "Yunfei, why didn't you say this at first?" ”。

"Qiyu Bixia, the grass people are talking about heating, and the amount of iron used is not small, and ordinary people are afraid that they can't afford it." Qin Yu didn't panic, and after bowing down, he spoke.

Li Shimin suddenly realized when he heard this, and then nodded, "I see, but I blame you." After a pause, Li Shimin continued, "Yunfei, tell me, what is this heating?" ”。

Qin Yu smiled slightly, and then briefly explained the general appearance and purpose of the heating, after Li Shimin listened, it was still in the clouds, but it was not good to continue to ask, who called Qin Yu to say the nouns one after another, pondering for a moment, Li Shimin opened his mouth and said, "Yunfei, how long will it take to make this heating?" ”。

Qin Yu was just about to speak, when he suddenly thought of something, and hurriedly said helplessly, "Qi Yu Bixia, this heating material needs iron ore, just this point stumped the grass people, and the pipe production is also a little troublesome, and you also need to consider the connection, I am afraid that it will not be able to be made for a while." ”。

When Li Shimin heard this, he was slightly stunned, and then glared at Qin Yu, in Li Shimin's opinion, Qin Yu was not unable to do it, this was asking for the right to smelt iron ore.

Li Shimin wanted to give Qin Yu an official and directly participate in the smelting and manufacturing of the government, but there was a saying that Qin Yu was not called an official first, and it was not appropriate to participate directly.

Even if it is for the eldest grandson, this heating has to be made, and this jishu is also in Qin Yu's hands, Li Shimin is not easy to ask for, even if he wants to come, he may not be able to make it.

Li Shimin thought for a while, and then said, "If I allow you to smelt iron ore, how long will it take to make it." ”。

When Qin Yu heard this, his eyes suddenly lit up, and he said secretly, "There is hope, if I am allowed to smelt iron ore by myself, won't the cement or something come out, and then I will repair the house if I want to repair the house, and if I want to build the road, I will build the road." Thinking of this, Qin Yu hurriedly held back his excitement and spoke.

"Bixia, if that's the case, it will be finalized in about three months, and the whole palace will be heated by then."

Qin Yu said that the time is naturally long, otherwise how can it be reflected that this heating is difficult to do, Li Shimin heard this, his brows suddenly frowned, and then he looked at Qin Yu, seeing that what Qin Yu said was not like a lie, he pondered for a moment, and then said.

"I'll give you a month at most, but you have to remember that you can't forge weapons without permission, or else." Li Shimin won't say anything about it here.

Qin Yu secretly breathed a sigh of relief when he heard this, and said secretly, "I'll go, fortunately, I said a lot, a month, the time is indeed a bit tight, but it's not impossible to complete." ”。

As for what Li Shimin meant, Qin Yu naturally understood that weapons were strictly controlled no matter which dynasty they were, even the Tang Dynasty was no exception.

After Qin Yu finished thinking about it, he hurriedly pretended to be extremely embarrassed, bowed down and said, "Yes, Bixia, the grass people will do their best to make heating for Bixia, and they will never cast weapons privately." ”。 (To be continued......)