My father was adding water to the iron pot from the water tank. Hearing this, he looked at him with a smile, "Did you use it when you were in the mountains with your master?" My father seemed to have really believed in what Zhang Chao said about living in the deep mountains and living in the mountains.

"Well, the stove was also made by my master himself, and it is really easy to use. It is easy to cook and save firewood. Without smoke, the fire will not be exaggerated. It can save half of the firewood." Zhang Chao did not exaggerate. Before Zhang Chao's stove changed, it took about fifteen to eighteen minutes to boil a pot of water. However, after changing the firewood stove, it only took twelve minutes to boil a pot of water, and saved more than half of the firewood.

"Isn't the stove all like this? There is no need to change it, just burn it like this." Old Mr. Zhang is a warrior and now he is a widower. He doesn't care much about these things, and he usually burns like this.

Zhang Chao wanted to change the stove, but not only to make it easier for him to burn the fire in the future. But he felt that this was a business opportunity. He had to borrow surplus grain from his family, so he was not living well. Besides, there was only such a cellar. Now Zhang Chao is also a part of this family. He hopes that his family can live a better life, eat white flour, and live in a big house.

But relying solely on farming is not realistic with the production technology of this era.

"Dad, you said that if our stove is modified, it will really make it good and save firewood. Do you think you are willing to use it?"

"Of course I'm willing to use it."

My father pulled the cut strips of wide noodles into small pieces, and threw them into the pot while pulling them.

Zhang Chao saw that this Tang Dynasty noodle dish was just a noodle soup.

"Then do you think there is such a good stove, will other people want to change it?"

"Of course everyone is willing to use good ones." My father nodded. These days, there is no gas stove or rice cooker. All of them have to cook. After a year, they have to burn a lot of firewood. The countrymen have to spend a lot of time going up the mountain to collect firewood every year, but those city people can only buy firewood. The countrymen can also use local materials to chop firewood or roast wheat poles, but for the city people, it is a considerable expense. Many countrymen even use firewood as a side job, and chop firewood in their spare time and then send it to the city for sale.

Zhang Chao smiled.

"Dad, it's winter now. The fields are idle and the mountains are closed. Everyone has no income when they are idle. You said we have this technology to help others change the stove, so can we make some money, and others change the stove, which can save a lot of firewood and time in the future. Isn't this a good thing?"

"Do you want to make money on this?" Old Mr. Zhang was a little surprised, and the speed of pulling noodles in his hand slowed down.

Zhang Chao also did not hide his ideas, make money, improve his life, and live a better life.

The more Mr. Zhang heard it, the more surprised he became.

"There is really such a useful fire-saving stove, and you can build it?"

"Yes." Zhang Chao was not timid.

The old-fashioned stove is very unreasonable in terms of structural aspects, with incomplete combustion, poor thermal insulation and large heat loss, so the relative efficiency is relatively low. The biggest disadvantage is that the stove door and stove chamber are large, and there is no stove grate, some even have no chimney, and the hanging fire is also high.

The new fire-saving stove has become a small stove door and a small stove, with a stove grate and a chimney added, and the hanging fire has also been reduced. This structure is more reasonable, with a complete ventilation system, allowing the firewood to burn more fully. In particular, the insulation layer and fire blocking ring are added, which greatly extends the rotation distance and time of high-temperature smoke in the stove, reducing heat loss.

The setting of the stove grate also allows the wood ash to fall into the ash chamber in time, maintaining good ventilation in the stove chamber and increasing oxygen.

The firewood-saving stove mainly achieves energy saving from three aspects, allowing fuel to burn more fully, heat transfer and insulation, and better use of waste heat.

Zhang Chao explained the various characteristics of the new stove in words that his father could understand.

Dad smiled happily.

"I'm really saying this. I didn't expect that there are so many things to pay attention to in a stove. Your master must be an amazing person."

"One method is known, a hundred methods are known. Master has studied the study of studying things." Zhang Chao couldn't explain how a monk living in seclusion in the mountains could study the improvement of the stove, so he could only use such pretentious words to explain.

"Well, one method is understood by all methods, and one method is indeed a master."

Zhang Chao chuckled and scratched his head.

"Okay, I'll call Ke Wu and the others to come over and change the stove according to your method. If the new stove is really as effective as you said, then this will be a matter."

"Dad, if you say the stove is really easy to use, how much does it cost to change a stove?"

My father continued to pull noodles into the pot and cursed, "You don't look like a monk, but rather like a businessman. You are too smart. You still charge money, which is really useful. When the villagers in the countryside are willing to change the stove, they will help you change it. Anyway, they are idle in winter. I can't help people change the stove and eat two meals a day. What's the money? They are all from the villagers in the countryside. We can't go too far with money."

Zhang Chao was a little stunned.

Just have two meals a day? Dad, you are too simple. Changing the stove is not just about doing some physical work, but also includes skills.

It’s still exclusive technology. If you modify the stove, it will save firewood and time a lot.

Is firewood not money, and is time not money?

How can this be called a diligent job? This is a reasonable labor remuneration.

"Dad, it doesn't matter if the villagers in the village are refusing or not, but we don't know anyone outside. If they want to refusal, we should still collect it. I'm not good at it, I just want to make some money to repair our cellar. If I can find a suitable woman to accompany you, wouldn't it be better."

"Tell you this, why are you talking about useless things?"

The people in the self-sufficient classical agricultural era are simple, without too smart interests, and will not be top of money. You cannot say that they have backward ideas, but that they are simple but more humane.

"I went to the military mansion in the afternoon. I haven't received the subsidy money and food for this expedition yet. I just happened to buy some fish, meat and some clothes. I will hold a few banquets tomorrow, and invite the villagers and the village master and the others to come together. We formally recognize the father and son and report to the government registration to the official registration."

Mr. Zhang is a foreigner, and there are no other people from the Zhang family here. Originally, my father had to accept Liu Jun as his son, and he had to register the genealogy with the permission of the Zong family. However, due to the war at the end of the Sui Dynasty, many things were disrupted. My father was here alone, but some procedures were still unavoidable.

Holding a few banquets and inviting neighbors to come is also a testimony. Inviting officials and family members to come is to register Zhang Chao for his household registration.
Chapter completed!