Zhao Guang seemed to see what Feng Yong was thinking, and he chuckled: "I met my sister in the past two days, but I was told that since my brother is a son of a master, it is normal for my younger brother to not understand some things. As long as my younger brother is tight, Follow my brother, and if you don’t understand anything, just read it and remember it first, and you will eventually know it in the future.”
If Huang Wudie could get rid of that man's heart, it wouldn't be a problem to be a good housekeeper! Coupled with that wealth, if this guy can really take her down, it will be worth it.
Thinking like this, the two of them stood by the Jialing River and watched the Qiang girls picking up stones.
Feng Yong asked those Qiang women to pick up pebbles, certainly not to use them to build sheep pens.
Of course, asking the Qiang people to collect more firewood was not just to make the fire brighter at night.
He was for burning stones.
If you want to wash a small batch of wool, only plant ash is enough. But for more than a hundred sheep, there are at least several hundred kilograms of wool. This is not a problem that plant ash can solve.
So Feng Yong wants to find more bases.
Whether in people's daily life or in industry, alkali is a very important thing.
For example, since the flour is ground from wheat, others can only make steamed cakes, and they do so in a rigid way. But Fengzhuang can make soft and delicious steamed buns. The difference lies in whether alkali is added or not.
In fact, alkali is also very common.
As long as there is a hut, there will be a layer of white crystals at the base of the wall, which is an alkaline substance naturally resolved, also called nitrate.
When Feng Yong was a child, he often ignored the smell of the latrine, ran to the wall with his friends, held a piece of paper under it, then carefully scraped off the layer, wrapped it and put it in his schoolbag.
When you have time, find some charcoal, grind it into powder, mix the two things together, and then carefully pour it on the ground into a long black thin line.
Finally, take a match, and the black powder thread will burn all the way, which is very similar to the burning of the explosive bag detonator in the movie, and a group of little kids are getting excited.
In an era when even firecrackers were a luxury, this was already a very high-end way to play.
As for the alkali used in food, in rural kitchens in the 1980s and 1990s, basically every household would have a piece of light yellow crystal, which was an alkali block made using local methods.
When you want to use it when steaming noodles on weekdays or making rice cakes during holidays, just chop off a small piece with a kitchen knife, grind it again, and then sprinkle it into the flour.
Making alkali by local methods is also very simple. The simplest method is to grind plant ash, then add water to precipitate, then filter, and finally evaporate, and the resulting crystals are alkali.
This is the basic operation of high school physics. If you can't even do this, it is an obvious failure in high school physics.
The basic component of plant ash is potassium carbonate, which is found in high school physics books.
This is how the alkali used by Fengzhuang to make steamed buns is obtained.
Of course, this kind of soil alkali was rarely seen in later generations when Feng Yong grew up. At that time, it was basically industrially produced edible alkali, which was snow-white and very beautiful.
The only time I saw it was when I was eating sand in the Gobi Desert. I saw local herdsmen burning the wormwood grown in the saline-alkali land and then distilling it.
Feng Yong learned this method to make homemade soil base.
As for the alkali used to wash wool now, it would be too wasteful if the alkali analyzed from plant ash was used, and the quantity was not enough, so he decided to come up with a more voluminous and cheap alkaline product.
In the memory of my previous life, I don’t know whether it was physics or chemistry in high school. There was a very common question. There was clear water in a test tube. When you blew air into it with a straw, flocculent sediment would be produced. Is there any possibility in it? What is it?
The answer is filtered lime water.
What Feng Yong wants to do now is to burn pebbles with lime, and then put the lime into water to get lime water. After the lime settles, he can get alkaline lime water.
The quality of lime burned with cobblestones is actually not good. With the current technical conditions, if you want to get the best lime, you still have to go to the mountains to find those rocks for calcination.
But the rocks are so big that they have to be knocked and moved. How long will it take?
If you want to burn rocks quickly, you have to use coal, but where can you get coal at this time?
It is not impossible to use firewood, but it is measured in tens of thousands of kilograms, and it seems that a kiln must be built. It takes so much effort to wash these hundreds of kilograms of wool, unless there is something wrong with his brain.
Besides, what Feng Yong wants is the alkalinity of lime water, and he is not building a house. Why does he need such good quality lime?
Put a layer of pebbles on top of a layer of firewood, stack them up layer by layer, and burn the top with firewood overnight. When it cools down the next day, it will be almost ready for use.
It was boring to watch the Qiang people working, but Zhao Guang, who was next to him, seemed very interested in the Qiang people shearing sheep, and even went over to watch regardless of the smell of the sheep.
Feng Yong was not interested, but he was very concerned about Yang'an in this ancient battlefield. Walking along the river, turning a corner along the city wall, I looked up from time to time to look at the tall Guancheng wall, thinking to myself, how on earth did Zhong Hui knock down such a majestic pass back then? It seems that there was no big war here when Wei destroyed Shu in history!
Thinking of this, my heart suddenly moved.
I saw a person standing under the city wall in front.
Waving his hand to signal to Old Soldier Lu who was following him, Feng Yong stepped forward and said hello with a smile: "Why is Sanniang here?"
Guan Ji was pacing back and forth with her head lowered, as if she was looking for something. When she heard the sound, she looked up and saw Feng Yong. Her cold face softened a little, and she nodded and said, "I never wanted to see Feng Yong here. Langjun."
Feng Yong thought that Huang Wudie came to the door and didn't see you. So you came here.
"I saw Sanniang walking around here from a distance. Why is that?"
Probably because the two of them were alone yesterday, a lot of strangers disappeared between them, and Guan Ji's voice became less cold: "Speaking of this matter, I have to ask Feng Langjun. Yesterday I asked Feng Langjun to help me. When I was looking for the bamboo slip, did I see a knife and pen?"
Feng Yong's face stiffened and he laughed dryly: "What kind of knife and pen?"
"Of course it's the knife and pen I used to carve words at that time."
Guan Ji frowned slightly, seeming to be talking to herself, and seemed to be explaining to Feng Yong: "I found that the knife and pen were missing last night, so I borrowed it from Feng Langjun. I searched the city wall this morning and found nothing. Found it. I thought it fell off the city wall, but I never thought about it and never found it."
Feng Tubao subconsciously wanted to touch his arms, but he resisted. He thought, I didn't take them with me when I went out this time. I kept them in the post house as a token of love.
"If you can't find it, it's okay." Feng Yong pretended to be generous and smiled, "Just take the one I have, I still have it."
Guan Ji's eyes flashed and she looked at Feng Yong. She hesitated to speak. After a while, she shook her head gently: "That's not the problem. That knife and pen are extraordinary for me."
Such an important thing is most suitable to be used as a token of love.
