Liao Tingyu was from the south.

This kang was a specialty of the north, and now he had to do the calculations. The design that looked like a ghost drawing was really nostalgic.

He had also seen the structure of the kang in history books and had seen the methods and rough models on short videos.

He didn’t know much about the specifics, and he still needed to experiment to see if it could be used.

Recently, he had used all the available people in the county government. Even Mother Deng was helping, with two little children playing in the mud beside her.

The fourth prince came to join in the fun. Liao Tingyu originally thought that it was inappropriate for a prince to do this, but seeing how happy he was, he didn’t want to disturb him.

Thinking about it, he was leaving soon anyway, so he could play all he wanted. The fourth prince was just around the age of junior high school right now.

The fourth prince was also very happy when he saw that Liao Tingyu did not chase him away. It was dry and cold in Beijing. He knew the magical effects of this thing from Liao Tingyu. If he could make it well, he would learn it and get one for the emperor and his brother.

Nothing could be better than this, it was suitable to curry favors.

Over the past few years, his father had been in good health, his brother had been cautious, and he appeared to be a loving and filial son, and his life had been pretty good.

Liao Tingyu felt very accomplished when he looked at the molds that had begun to take shape in the yard.

In order to do the experiment, Liao Tingyu had burned several defective products.

The originally elegant courtyard was full of broken pieces of mud.

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Finally, after many failed experiments and some improvement, he finally made this thing.

Although this thing was not difficult to make, it involved a lot of technical knowledges, so he could only try them step by step.

Such a simple and uneven fire pit was finally successfully made after many failures. Liao Tingyu felt it was even more beautiful than a gorgeous woman.

Mother Deng even sat on the fire kang and asked the maids to light the fire, enjoying herself. After getting up, she commented, “Not bad, not bad, the heat is just right. Little prince, come and sit too.”

Originally, when Mother Deng knew Song An’s identity, she was still very reserved. But as she got acquainted with him, she realized that this guy was a thick-skinned guy. She knew him well after getting along with him and she didn’t think much of his identity.

Song An was not particular about things. He used to show his identity and say a few polite words, but now he looked very childish, except his noble clothing. On the outside, he looked like a noble kid but he was naturally naughty kid.

“This thing is really comfortable to sit on. It doesn’t burn your butt like last time.” Song An commented very objectively.

“What are you talking about? If you still talk like this when you go back, General Zhao will have to come to my county government office to settle accounts with me and tear down my county government office.” Liao Tingyu heard the word “butt” and sighed this kid really….

He remembered that this boy was very polite and knew how to bring gifts every time he came here, but now he said such things.

Sure enough, people couldn’t be too relaxed.

Liao Tingyu probably succeeded, and this thing had been made, but how to make it popular?

Liao Tingyu rolled his eyes and focused on Zhao Yuan.

With so many soldiers under his command, it would be pointless to train all the time. He might as well do something good and made some extra money.

After making up his mind, he stopped thinking about it and planned to share the good news with Zilan.

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In the evening, Huang Zilan came back from a tiring day outside and beat his stiff neck. Liao Tingyu served him tea and water with a wink.

“What’s wrong with you today? Why are you free? Aren’t you very busy?” Huang Zilan took the cup skillfully and asked strangely after taking a sip.

When he came back before, Liao Tingyu was still playing with the mud in the courtyard!

“I want to give you a surprise today. I wonder if madam has time to come with me to have a look.” Liao Tingyu smiled so hard that his eyes narrowed, like a lazy fox.

“How can I refuse such a kind invitation from my husband?” Huang Zilan held his head high and slowly put his hand on Liao Tingyu’s arm, motioning for him to lead the way.

Liao Tingyu quickly stretched out his arm diligently and led the way: “Yes, madam, please come this way.”

When they arrived at the courtyard, the garbage in the courtyard had been cleaned up. Regardless of whether the mold was still there, Zhao Yuan had left. Two children were playing happily on it, and Mother Deng was sitting next to them.

Huang Zilan greeted Mother Deng, touched the earth-brown bed, and said in surprise: “This is the fire kang!”

He reached out and touched the kang and found that the temperature on it was just warm: “Will the temperature be fine?”

“You just need to control the firewood. When the fire is big, the temperature will naturally be high. But if you put a few quilts on it within the tolerable range, that’s fine,” Liao Tingyu explained.

In order to prove that, he turned to Mother Deng, who was still feeling the temperature on the kang from time to time, and said, “Mother, do you think what I said is right?”

“Well, youngest daughter-in-law, don’t worry, it has been burning for five hours. The temperature is still acceptable. Let’s use this in the winter. Ever since I came here, my legs have been hurting from time to time. This is comfortable.” Mother Deng didn’t answer his words and said to herself.

Liao Tingyu knew why Mother Deng was unhappy.

Today he saw that this thing was done, and he was very happy, he rewarded the helpers. After watching the wages plus the reward money being given out, Mother Deng’s face turned ugly at that time, and it was natural for her to be sulky now.

But he didn’t dare to say it, after all, he did it just because his brain was hot.