Scattering, watering, and mud, pouring, pressing...... One by one, honeycomb coal can be easily manufactured and formed.

Of course, it can't be used yet, it must be air-dried. But since Gao Shishi wanted to show it to Zhang, it would be too time-consuming to wait for it to dry, so he burned a fire and put a circle of honeycomb coal next to it, so that his subordinates could turn the direction of the honeycomb coal from time to time.

The water vapor rose, and after a short time, a circle of honeycomb coal was baked, and Gao Shi ordered someone to bring two samples of coal stoves brought back from Jingshi, lit the honeycomb coal and put it in it, and then ordered someone to bring two iron pots filled with water and put them on it.

The vent at the bottom of the coal stove opened, and in a short time, the cold water in the iron pot boiled.

"So fast?" Zhang was surprised: "This is much faster than burning firewood...... How long can these two honeycomb coals burn? ”

Gao pragmatic smiled: "I brought two sample coal stoves, one is for two sections of honeycomb coal, and the other is for three sections of honeycomb coal, and now this one is for two sections." In fact, how long it burns depends on how to burn, if the vent is opened to the maximum like this, then these two sections of honeycomb coal can probably burn for two hours, but if it is not opened so large, it can burn for almost one night at most. ”

"You've got so much muddy water mixed with this coal, but it's burning longer?" Zhang was puzzled and wondered: "What is the reason? ”

Gao pragmatic said with a smile: "Mixing muddy water is not to burn for a long time, just for molding, and the main thing to burn for a long time is to look at the design of this coal furnace...... This problem is more troublesome to explain, in short, as long as the mother knows, the faster the ventilation, the faster it burns, and of course the fire is stronger. ”

Of course, even children understand the principles of oxygen combustion and heat loss in later generations, but it is more troublesome to explain to the ancients, because this is a problem of world view, and the ancients did not know things like the periodic table, so Gao pragmatic directly chose not to explain.

Fortunately, Zhang also knew that his eldest son had been a prodigy since he was a child, and he had to be valued by the third uncle, and he personally instructed him, since he said that it was troublesome to explain, it must be really troublesome, but the phenomenon of ventilation is hot Zhang actually understands - although she was born in a wealthy family, she is not unable to cook herself.

In this era, the stove in the kitchen was made of firewood, of course she also used it, and that kind of stove also had an opening to put firewood in, and there was a piece of iron sheet on it as a "door", and the opening of the door could affect the size of the fire as much as it was closed. Not to mention, you can also fan the wind with a pu fan to make the firepower stronger.

Therefore, the principle is the same, although Zhang does not know what oxygen combustion, but he knows the application, and it is not difficult to understand.

Zhang nodded, then turned around and said a few words to the two maids he brought, called the two stewards, and gave a few orders, Gao Shishi found that the two stewards seemed to be newcomers and had not seen them before.

Zhang Shi saw Gao Shishi's doubts, and said with a smile: "The two of them came from Puzhou for their mother half a year ago, and they did some work like a bookkeeper." ”

Gao pragmatic asked, "What did my mother want them to do just now?" ”

Zhang said: "Calculate how much cost can be saved after making honeycomb coal with the same amount of charcoal." She explained: "This is the most important thing, and only when the cost is calculated can the next thing be done." ”

Gao Shishi laughed: "Since my uncle, the Zhang family has successfully entered the office, and I can't imagine that my mother's ability to do business has not regressed at all." ”

Zhang glared at him and said: "It is true that people go to high places, but they can't forget their roots, the Zhang family is not a high-ranking family, just a businessman, but the lotus flower comes from the silt, and the plum fragrance comes from the bitter cold, how can I forget the Zhang family's business?" You are the same, the Gao family is a family heirloom, you are now learning from the way of business, although it is also a move to consolidate the family business for my six rooms, but you must not forget your business. In particular, you now have the identity of a prince's companion, this time you will return to your hometown for a small test, but don't make a mistake, otherwise...... How many people should be disgraced by this? ”

Gao pragmatically smiled confidently and said, "As long as the county honor, the mansion honor, and the sect master don't deliberately make things difficult, it must be no big deal." ”

Zhang was slightly surprised by Gao's pragmatic attitude, stared at him for a while, and then said: "You are confident that it is good, but you still can't be careless, I think that before your uncle took the test, he was also a famous talent in Puzhou, but he still studied day and night, and did not dare to slack off in the slightest, but even so, he was only fourteen years old to take the Maocai exam." Although my son is gifted and intelligent, after all, he is only nine years old, and he is five years ahead of your uncle, how can he be negligent? ”

After all, Gao Pragmatic is a person who has received a lot of Western-style education in his previous life, and he emphasizes self-confidence, but he also knows that the atmosphere of Daming is different, Daming pays attention to humility, no matter how talented and talented you are, at least you must be humble in your words, otherwise it will be regarded as a rebellion, so you nodded again and again.

Seeing him like this, Zhang put away his serious expression, thought for a while, and then said, "Hmm...... In terms of county and government honors, you don't have to worry, as long as your article is okay, at least they won't deliberately embarrass you. ”

Gao Pragmatic didn't speak immediately, just looked at Zhang, waiting for her to explain.

Zhang smiled slightly and said, "Let's go into the house and talk." Then he turned around and went to the back room.

Gao pragmatic roughly guessed something, didn't say much, and followed his mother into the house.

After sitting down, Zhang waved his hand to let his subordinates go out first, and then said: "The soap used by the Kaifeng Mansion and the Xinzheng County Government is supplied at half price. ”

Gao pragmatic laughed.

Zhang glared at him and feigned anger: "What are you laughing at? ”

"My son thought it was given away for free." Gao Pragmatic smiled very badly.

Zhang said dissatisfiedly: "You can do any business in the world, but you can't do a loss-making business, and you didn't tell Wei Niang what the cost of the soap is, and Wei Niang feels that half price supply is probably going to lose a lot, although they can't use it a lot, but the business belongs to the business, although these two businesses are special, but they can't lose too much." ”

Gao Pragmatic laughed again, and said: "My mother doesn't know, the amount that my son promised to give to the palace every year is not less than the amount that the entire Henan Mansion gets, and those offerings, my son doesn't take a penny." ”

Zhang was taken aback, his face was pale, and he sat up straight all of a sudden: "Isn't that a big loss?" You...... Do you have so much money to fill into? ”

She looked anxious, and said with some annoyance: "It's not good to do business with the palace, and you can't even get the capital back!" But don't worry, if you really can't tell your uncle, he is generous, as long as you read well, he will definitely not be afraid to spend money on you. ”

Hey, this sentence is a bit informative.

But Gao Pragmatic laughed again, and said happily: "Mother, don't think that your son will definitely lose money if he gives away so many goods for nothing, you have to calculate two accounts: one account is, what benefits can I get after I send these goods; Another account is how much my soap costs. ”