However, Hu Changan was unaware of the twists and turns in Sun Yi's mind.
Hu Changan just calmly picked up the pen and drawing tools and started drawing on the paper.
Soon, the draft of the warm wall took shape.
This is a warm wall structure that was very popular in the Qing Dynasty.
Make two layers of walls, with the inner layer hollow.
The hollow part can be connected to the outer stove.
As long as the stove burns, the air in the hollow wall will be heated, thus continuously emitting heat.
When the walls are warm, the room will naturally be warm.
And it warms evenly this way.
After all, things like air conditioners and heaters can only warm a small area.
Only by relying on air circulation can the entire area be warmed.
So sometimes when the indoor air is not circulated well, the problem of uneven heating will occur.
The place next to the heater may be so warm that it makes you feel hot, but the place far away from the heater may make you feel cold and shivering.
Warm walls do not have this problem.
No matter where you are indoors, you can feel warm as spring.
Seeing that Hu Changan had finished the painting, Sun Yi leaned over to see what Hu Changan had painted.
As an old craftsman, he has seen too many monsters and monsters.
If there is too much Hu Changan, there will not be too much, if there is too little Hu Changan, there will not be too much.
He seemed to have predicted the tragic situation Hu Changan painted.
However, just like that, Sun Yi was completely stunned.
I saw the design drawings neatly drawn on the paper!
With Sun Yi’s perspective after years of building houses, this drawing can definitely be used!
Sun Yi couldn't help but become interested, and quickly stepped forward to take a closer look.
However, just by looking at it, Sun Yi was completely stunned.
The design of this warm wall is so clever!
Sun Yi has been building houses for many years, but he never imagined such an exquisite design!
As long as you light a fire in the stove, the room will heat up naturally.
And due to the design of the independent flue, the smoke from the stove will be discharged directly to the outdoors and will not accumulate indoors.
This means that people indoors can enjoy the warmth of a room anytime and anywhere by asking people outside to set up a heater!
After staying for a moment, Sun Yi couldn't help but praise: "Master Hu, I wonder how you came up with such an exquisite design? Even if I think about it all, I can't think of it!"
When Hu Changan saw this, he also smiled slightly and didn't say much.
Before Sun Yi's team arrived, he had already redeemed the building guide in the system.
Hu Changan's hand had to be traced several times according to the construction guide before he could successfully reproduce it on the spot.
While Sun Yi was moved, a bold idea slowly formed in his mind: "Master Hu, I wonder if I can recommend your warm wall construction plan to others?"
The keen Sun Yi has already seen business opportunities in it.
What noble family wouldn’t want to own such an ingenious warm wall in winter?
If he could extend this wall-warming method to the entire Yingtian City, he would definitely make a fortune!
However, Hu Changan ruthlessly broke Sun Yi's fantasy: "Craftsman Sun, if you want to recommend this plan, you can."
"But you must introduce it to others. This is the recipe that I, Hu Changan, came up with."
"And every time you build a warm wall, you have to pay me a certain fee."
Just kidding, Sun Yi can think of this, but Hu Changan can't think of it?
Hu Changan will never let go of this piece of cake.
First, this can enhance Hu Changan's reputation in Yingtian City.
If all nobles from aristocratic families use the warm wall invented by Hu Changan, then they will naturally have a better impression of Hu Changan.
In the future, in the court, even if they may not take risks to support Hu Changan, at least they will not add insult to injury or deliberately harm Hu Changan.
In this way, Hu Changan would have an extra layer of protection in the court.
Secondly, this is also a way to make money!
In later generations, what kind of design fees and patent fees are there? Hu Changan shouldn't charge some fees for this invention.
No matter how small a mosquito's legs are, they are still meat, and when accumulated, it will definitely become an objective income.
Sun Yi thought for a moment and agreed to Hu Changan's proposal.
Although Sun Yi may have to pay some money in the future and help Hu Changan publicize it, for Sun Yi, this is definitely a first-rate thing.
Generally, when aristocratic families build residences, they build them in patches!
People like Hu Changan who only build one house are still in the minority after all.
The aristocratic families are all wealthy. If they knew that Sun Yi had such a comfortable winter heating house, they would definitely give Sun Yi priority to build a house.
In this way, what Sun Yi earns is not the money for a house, but the money for a lot of houses!
With so much income, what's the harm in paying Hu Changan a little remuneration?
As a result, Sun Yi and Hu Changan happily reached a consensus.
And in order to show his sincerity in cooperation, Sun Yi also said that he would not take any money from Hu Changan's house!
After all, in the Ming Dynasty, building a house did not cost as much as it did in later generations.
The land and house were purchased separately.
Buying land is the big deal.
The cost of buying land and building a house on it is just a small amount, not much.
Even if Hu Changan built a brick house this time, the bricks were all made of clay!
When it comes to clay, you don’t just have to dig it out casually in the ground, as long as you have a shovel.
So the cost of building a house is really not too expensive.
When Hu Changan saw this, he happily accepted Sun Yi's suggestion for free.
After all, who wouldn’t be happy if a house is built for free?
Although Sun Yi and the others had no money, they worked very hard.
As the saying goes, science and technology are the primary productive forces.
When they thought that they would be able to make a fortune by relying on this skill of building warm walls in the future, they naturally worked extremely hard.
With the hard work of all the craftsmen day and night, Hu Changan's greenhouse was completed in less than a month.
Hu Changan quickly ordered people to add briquettes to the stove outside.
Soon, as the briquettes burned, the room slowly became warmer.
Although it is already late autumn, the small house is still as warm as spring!
Hu Changan can move freely inside even if he wears spring clothes.
When Sun Yi saw the condition of the greenhouse in use, he was also greatly moved.
Originally, Sun Yi only saw it on the drawings and did not intuitively feel the magic of this warm wall.
Now that I have experienced it myself, it is indeed extraordinary!
This is simply an artifact that can reverse the seasons!
At this moment, Hu Changan and Sun Yi were very satisfied.
Seeing that the house was completed, Sun Yi also said goodbye to Hu Changan and prepared to continue working at his next home.
Hu Changan also touched his chin, preparing to invite people to visit his new house.