The fire pit seems to have arisen from the northeast and brought into the Central Plains when the Manchu Qing Dynasty entered the customs.

It is a proven, affordable way to heat your home.

For more than 300 years, it has swept the entire north and is a must-have for almost every household.

The hot kang head of the wife and children has also become the most simple desire of northern men for a stable and comfortable life.

With the help of the residual heat of the fireworks for cooking, there can be a hot kang for heating, which is convenient and simple, saving firewood.

Although it is simple, it is definitely a novelty in Datang.

There must be people who are curious about the origin, and even if the mother doesn't ask, outsiders will ask about it.

Chen Yu wanted to say that it was his own invention, but when the words came to his lips, he changed his mind.

As a traverser, I will definitely have to tinker with a lot of "inventions" in the future.

A peasant boy who originally had a wooden personality, did not read much, and had never been out of a radius of fifty miles since he was a child, suddenly became an ingenious inventor.

Unconscionable!

In order to avoid suspicion and unnecessary trouble, there must be a reasonable, at least reluctantly acceptable, preferably completely convincing reason.

After a slight groan, Chen Yu said: "Ah, I was rescued by an old man with a white beard and white hair in the mountains, and I was guided by his old man......"

Making up stories is Chen Yu's forte, and soon a mysterious and plausible mysterious old man, as well as an adventure in the mountains, were born.

Chen and Second Uncle Xu were suspicious, while Rong Niang opened her mouth wide and was surprised.

"Brother Yu, that old man is very powerful?"

"Yes, the tiger roared and the wolf howled at night, and it once attacked the lodging place, and the old man casually scolded him, and all the beasts were silent and fled in the wilderness."

Chen Yu lowered his voice and said, "I once wondered if his old man was the mountain god of Zhongnan Mountain?" ”

Mountain God?!

The family looked at each other and was skeptical.

Chen and Xu Er realized in hindsight that this time Xiao Yu'er went home, and it was indeed a little different from before.

It seems to be much smarter and more flexible, and now there are such whimsical ideas, is it really that he has met the mountain god and opened his mind?

It's bizarre, but it seems reasonable.

After all, this is a time to believe in and fear ghosts and gods.

The most important thing is that for his mother and Second Uncle Xu, Chen Yu has become smart and capable, and they can't ask for it.

"Okay, the kang is ready... I'll change the stove again. ”

"The stove needs to be changed too?"

"Yes, after the transformation, it will be more economical to save firewood."

Chen Yu swore that he had carefully checked that the stove at this time was indeed different from the stove in the countryside in later generations.

The ventilation conditions and thermal energy efficiency are relatively backward, waste firewood, and smoke, dust, not affordable and unhygienic.

Chen Yu immediately modified the model of the firewood stove in the province in later generations, and divided the stove into two layers, the upper layer burned firewood, and the lower layer accumulated ash and ventilation.

This increases oxygen supply, improves combustion efficiency and reduces dust drift.

The four walls are also coated with thick yellow mud to reduce heat loss and improve efficiency.

Saving firewood is inevitable, but the rate of saving is uncertain for the time being until there are no experimental statistics.

Anyway, after Rong Niang tried it, she smiled, at least she wouldn't be disgraced when she added firewood to make a fire.

"Second uncle, let everyone in the village come and take a look, every family will definitely want it. When the time comes, let's go and renovate the kang for them to earn some wages. ”

"This ......"

"How?"

Second Uncle Xu looked embarrassed: "Our family is an outsider, and we have been able to take root in Ju'an all these years, thanks to the help of the villagers."

A few days ago, you disappeared in the mountains, and the old and young masters in the village went to help find you, and they worked tirelessly without complaint.

Now why are you embarrassed to collect money? Everyone's life is tight! ”

All right!

In the local society, human affection is the most important.

"Second uncle, then simply teach the method of hot kang and provincial firewood stove to the villagers."

"Huh?"

Xu Er couldn't help but be surprised, and the contrast between the two completely different approaches was a little too big in an instant.

Chen Yu said with a smile: "I want to, let the villagers go to the surrounding villages and towns to promote, and the method of changing the warm kang into a stove is the exclusive craft of our Ju'anli for the time being."

As long as it spreads, naturally some people want it. When the time comes, everyone will have a job to work and be able to make money. ”

"That's a good idea."

"Well, second uncle, our family appropriately collects patents...... Tuition, not excessive, right? ”

Chen Yu smiled, the structure of the fire pit and the provincial firewood stove is simple, and it can be imitated naturally after seeing more, and there is no technical content.

It is also a good thing to make a fortune while the weather is cold and benefit the neighbors.

This time, Second Uncle Xu did not object.

A win-win situation does not violate conscience, and it is not afraid of neighbors poking the backbone, and it does not damage the feelings.

……

In the next few days, Chenjiahuo Kang became a popular attraction in Ju'anli.

The whole village came to visit and experience the scene.

Originally, it was a tradition of northern hospitality to invite guests to the kang, but there were too many people, and Chen Yu was a little scared.

Every time someone comes, they let Rong Niang put away the bedding early.

It is more intuitive to say that it is actually worried about the poor health conditions of the villagers.

I don't know how many years I have worn the leather jacket, and the dirt has been shiny and slippery;

I don't know how long I haven't washed my hair, and it's lice when I button it casually.

Some children may not even wipe their buttocks, and they are dirty and smelly, and they can't bear to see or smell them......

Chen Yu frowned, and the villagers praised each other, their eyes full of envy.

After feeling the warmth, no matter who wants to have a warm ondol.

The long and cold winter nights will no longer be difficult in the future, and I am not afraid that the elderly and children will be cold and sick again.

will no longer be shivering with cold, and naturally have the strength and heart to make more affectionate with the mother-in-law.

Unsurprisingly, the birth rate in Juanri is likely to increase next year.

The key is to save a lot of firewood salary, a good thing that you can't ask for!

The neighbors immediately rushed to build the ondol and rebuild the stove.

As a result, Chen Yu and Second Uncle Xu naturally became busy people.

The uncle and nephew did not collect money, and the villagers praised and appreciated.

Every family did their best, had enough food, and entertained their uncles and nephews.

But in the mouth, Chen Yu always feels that it is not a taste, and the only thing he cares about is that it is clean.

There are many people in the village who have flexible hands and eyes and think minds, quietly observing the learning method, and Chen Yu and Second Uncle Xu do not hide their secrets and take the initiative to explain the professor.

Soon, most of the old and young masters in Ju'anli mastered this "new craft".

When a few little daughters-in-law who returned to their parents' homes showed off, the new stoves began to spread throughout Fanchuan, and the villagers in Ju'anli immediately turned into masons and began to get busy.

Chen Yu and Second Uncle Xu, who are the "source of patents", are no longer polite and charge "tuition".

Most of the villagers still have a conscience, and after going out to make money, they have come to the door to thank them, or send thank-you gifts, or directly offer some Kaiyuan Tongbao.

The Chen family's overstretched situation has improved slightly, but the benefits are also very limited.

Chen Yu didn't plan to make a lot of money from this, so he didn't care much about it.

He's now focused on something else.

Since the day I came back from the mountains, the snow has not stopped, and although it has stopped occasionally, most of the time it has been fluttering and blowing.

It's been seven days since then......