"I'm not sure, I know I didn't see you."

Cheng Yaojin had nothing to be polite about Fang Yiai. He patted him on his shoulder, praised him, and picked up the wine glass. Fang Yiai couldn't help but say it, and ran into him, "Come on, drink!"

Fang Yiai bit the bullet and fucked this glass, and began to wonder how to escape from the wine. He didn't dare to fight with Lao Cheng, otherwise he would have a headache to wake up tomorrow morning.

Just then, footsteps came from outside the door.

Li Shimin stopped listening to the wall and laughed heartily. While joking about Cheng Yaojin, he walked into the room, "You know the truth and you are very informed. I only realized this cold-proof thing today, so you came to ask for advice."

Cheng Yaojin and Fang Yiai quickly stood up and bowed to prepare for the salute.

“No need to be polite.”

Li Shimin waved his hand casually to stop the two from taking the traditional Chinese etiquette, and it was natural to take a seat. Fang Yiai ran down himself and put bowls and chopsticks for him.

Cheng Yaojin smiled and said complacently: "The farmers in Chenzhuang have some workers in Fangjiazhuang, so they are more informed."

"I was thinking that if the village wants to build this kang, I have to give a prophet."

As he said that, he poured Li Er a glass of wine. Li Junxian was about to step forward, but he seemed to be planning to test the poison, but Li Er stopped him with his eyes.

He picked up the wine glass and said, "When have you become so particular about Zhijie?"

Li Er still understands Lao Cheng, and even if he ignores him, he has to argue with him. When will he say hello to someone in advance?

Cheng Yaojin was very thick-skinned. He did not quibble about Li Shiming's sarcasm. Instead, he took it for granted. He answered with confidence, "Isn't this a houseboy doing it? We can't bully the younger generation, right?"

He raised his head and drank it all, exhaling a breath of heat. Li Er glanced at Lao Cheng, shook his head helplessly and smiled bitterly.

He ate two bites of food in his arms, and his eyes lit up and said, "The palace also learned from Fangfu. Why does the dishes here feel better?"

"Maybe because Your Majesty has a different state of mind." Fang Yiai said.

Li Shimin smiled and said nothing. When he talked about the serious matters of this trip, his expression became serious, "Will the 'hot kang' really keep the cold?"

"able!"

Fang Yiai answered with certainty.

Li Shimin smiled. Since Fang Yiai was so sure, he no longer doubted it. Instead, he became curious and couldn't help asking: "Is there any repair? Can I see it?"

"Just in the bedroom, please move your Majesty."

In the bedroom.

The kang occupied half of the room, and the mud was still wet. The stove connected to the kang was still on fire at this time. The heat that could be seen from the naked eye was really visible on the kang, which was enough to see the temperature above. There was straw mixed in the mud, so there was no need to worry about cracking.

"Is this kang easy to manufacture?"

Seeing this scene in front of him, Li Shimin looked happy and couldn't wait to ask.

"As Your Majesty saw, the kang was completely made of earth and stone, and the materials were very convenient to draw. The temperature was provided by the heat in the smoke of firewood. In the past, by cooking firewood, the kang could be warmed without wasting any extra firewood."

Listening to Fang Yiai's story, Li Shimin's eyes became brighter and brighter, as if he saw a rare treasure.

After the words came to his voice, Li Shimin praised it endlessly, "Wonderful thoughts are really wonderful thoughts! You kid have always surprised me, this is something that benefits the world."

Cheng Yaojin looked at the side, happy and a little envious. Looking at His Majesty's tone and attitude, he completely treated Fang Yiai as his son and nephew!

"Congratulations to Your Majesty, with this kang, I don't know how many people are frozen to death this winter! God bless me, Datang! Hahaha..."

In ancient times, people would freeze to death every winter, and this number was not a small number. For the population, it was always a big concern for the court.

"I dare not take credit for it."

Fang Yiai bowed and was polite. Seeing Li Shimin's happy look, he couldn't help but feel moved, "Your Majesty, I have two more inventions for keeping cold..."

"Well……"

Li Shimin and Cheng Yaojin were stunned. The two stared at Fang Yiai with the eyes of looking at the monster. In the end, they still overcame the surprise. Li Shimin couldn't help but urged: "Come on!"

"I have already drawn one of them before and plan to install them in the mansion this year. Qiaoer, go to the study, take the drawings, and bring the pencil paper as well."

Fang Yiai said, instructing Qiaoer to get the drawings. He continued: "In fact, when it comes to heating, it is not firewood. Carbonifer contains more calories and has more reserves than firewood."

"Carbonifer can burn charcoal is smoke toxic and is not suitable for use at home, so people will choose charcoal." Cheng Yaojin questioned.

As for carbon monoxide poisoning, Fang Yiai naturally knew it. He smiled softly and said, "But charcoal is very expensive and ordinary people can't afford it! In fact, the solution to tobacco poison is very simple. As long as people don't contact them, there is no need to worry about poisoning."

"For example, if you can repair the stove outside the house, you can use it with confidence."

Li Shimin also looked puzzled and said he couldn't figure it out and asked, "But, in this way, how can he still provide heating for people."

At this time, Qiaoer took a drawing, which was the style drawing of the radiator.

Fang Yiai reached out to take it, spread out the drawings, and said, "For example, I call it 'heating'. Use these copper pipes to lead into the house, fill it with water, and connect one end to the pot on the stove. After the water in the pot is heated, the heat is transferred out through the water."

Li Shimin and Cheng Yaojin looked at the drawings with big eyes and small eyes. They always felt that their minds were not enough. They thought Fang Yiai was right, but they still expressed their questions: "This... is really useful?"

"Heating is being built on the farm, and it will be clear soon."

Fang Yiai said this, and the two of them were not worried about it, and the result would be seen soon.

Immediately afterwards, Li Shimin frowned again and questioned, "But the cost of this item is probably quite high, not something that ordinary people can afford to decorate."

"So, I also designed a cheaper one."

As he said that, Fang Yiai started drawing, "This thing is called a coal stove, and carbonite is poured into it to burn, and the smoke is discharged along the chimney, which can solve the problem of smoke poison."

"A coal stove only requires a stove and chimney, which is relatively cheaper, and can be made into honeycomb coal, which is conducive to combustion and will not be wasted coal powder."

When I saw Fang Yiai one by one, I remembered the excitement when I first saw the kang, Li Shimin and the other two felt like they were like rural bullies who had never seen the world.

I was a little stunned for a moment, it was really a wonderful idea!

"Ahem!"

Cheng Yaojin coughed lightly, concealed his embarrassment, and then praised in a different way: "Okay! Fang Boy is really a talented person and invented three things in a row!"

Li Shimin was full of fighting spirit, "Immediately issued an edict to issue the drawings across the country, and ordered governments from all over the country to help the people build fire kangs before winter to resist the severe cold in winter, and make sure that no one person will die of freezing in winter."
Chapter completed!