let go of that priestess

"Eh......"

Jiang Hongdou was embarrassed when he heard the words, and said in a low voice: "I, I sweated a lot with you yesterday, of course it won't smell good..."

"I know, of course I know what I did, I'm not disgusted, I just said, we must pay attention to hygiene."

Ji Cheng explained with shame: "Keep clean so you won't get sick easily."

"Oh...then let's take a bath together when we go to the river tomorrow. It's close anyway, so we can take a bath every day."

Jiang Hongdou pouted: "I will become more fragrant."

"Well, yes, I believe...

In other words, you said that you wash it every day, right? In fact, as long as we sweat, it is best to wash it every day. "

Ji Cheng coughed, and answered these words calmly on the surface, but his heart was turbulent.

Wow, wash together...

Really?Do you take a mandarin duck bath together every day? ?

Great!

After thinking about it for a while, he came back to his senses, blushed slightly and said, "Well, that's the end of today's topic, go to sleep, there's still work to do tomorrow, there's a lot of work to do..."

"Mm, good." Jiang Hongdou obediently responded, buried in Ji Cheng's arms and fell into a deep sleep with a beautiful vision for the future.

The next day, because they slept on a kang that didn't collapse, they were both warm when they got up, and it was okay to go directly to the river to take a bath in this state.

After walking for a few minutes, I came to the river, took off my clothes and jumped into the river to wash my body.

The cleaning method is also very simple and original.

When you are alone, you can only rub your own body. If you are a couple, you rub each other's body.

With this appearance, Ji Cheng was the first to be unable to bear it.

Although it is very unreasonable to waste physical energy, human beings are irrational animals.

After the joy, Ji Cheng regretted it.

Resting on the bank of the river with the girl in his arms, he sighed: "No way...we still can't wash together every day."

"You said last night that it's best to wash it every day."

Jiang Hongdou muttered, leaning into his arms with a blush on his face, guessing:

"Is it because it's too late? Then shall we wash it in the future?"

"Wash! Wash for hygiene!"

Ji Cheng hesitated for a moment, then nodded vigorously.

Then he said embarrassingly: "But we can't always be together, we have to wash separately, we need to build a separate bathroom for bathing by the river.

In fact, this is what I said last night, and we have to start working on bathing. "

"Eh?..." Jiang Hongdou was startled: "Then why didn't you make it clear last night?"

"Because I got something in my head last night, and now it's sage time..."

"What? What's the bug on the brain? Sage time?"

"Cough, it's nothing." Ji Cheng rubbed his nose and said, "Don't worry about this, let's talk about the bathing facilities.

In addition to the bathroom by the river, we also need towels and soap to really clean our bodies.

Don't underestimate these two, especially the latter soap, which is the stone of life for us! "

"The Stone of Life?"

This gimmicky-sounding title successfully diverted the girl's attention.

Ji Cheng glanced at her expression, nodded quickly and continued:

"Yes! The grass we burn can get plant ash, also called oxaline, and then add it to a pot of boiled and purified animal oil, mix and heat, and finally we can get soap.

In this world where once you are sick, you are done playing, soap can inhibit bacteria, and it is the stone of life that replaces the doctor! "

Chapter 20 Simple Pottery Wheel

On the way back to the new camp, Ji Cheng explained to the girl how the soap works.

Saponification reaction, bacterial microorganisms and the like.

After Jiang Hongdou listened to these raw knowledge, he deeply felt its professionalism, and also felt the pressure of knowledge crushing.

But anyway, she got it.

Science is an explanation method with strong causal logic, because of what, so what, as long as you accept it, you will be able to understand it.

But if you understand it, you understand it, and you should be ignorant or ignorant.

Jiang Hongdou said in a daze: "The thing called carbon, hydrocarbon chain has an oil-friendly end and a hydrophilic end. The former surrounds the dirt, and the latter allows it to flow in the water, forming a micelle as a whole, so that it can be absorbed by water." Rinse away to cleanse the body.

Well, I see... But having said that, what kind of magical hydrocarbon chains and micelles are like, it is completely unimaginable, completely unreal..."

"Not bad~ Learning to ask questions is the right way to explore science, and rote memorization is just for exams."

Ji Cheng thought for a while and said, "Then just imagine the hydrocarbon chain as an ultra-small caterpillar."

"Caterpillar?"

"Uh, don't you know? That's a multi-legged hairy worm."

Ji Cheng said: "When the saponification reaction occurs, the long worm's fluffy feet grab the stains, like preying on prey, and the whole worm body curls up into a ball, which is like a gelatinous ball, and then the worm's shell is smooth, with its back facing the outside , which is equivalent to a hydrophilic shell, which is washed away by water.”

"Oh!" With such a metaphor, the sense of picture suddenly came.

Jiang Hongdou stretched out her white hands after taking a bath, and shivered at the sight.

"Also, that is to say, even though my hands look clean now, there are still a lot of invisible bacteria on them, these little creatures crawling around.

Then if there is soap, you can use countless small worms... Well, no, hydrocarbon chains are not living things, they are picked up by saponification. "

"That's right, you completely understand!~" Ji Cheng was pleased.

Jiang Hongdou's face was a little stiff: "Well, I understand, if these germs are the cause of most diseases, I understand.

The soap that can cleanse the body is indeed the stone of life!

Ridiculous, the tribe has been sacrificing to the gods for this, speculating on the will of the gods..."

"Actually, there is no need to be depressed." Ji Cheng patted her on the shoulder and said: "In my place, human beings have been ignorant for a long time.

As I said, science is simple and unpretentious, accumulated step by step, bit by bit, and you already know a lot of knowledge in advance. "

"Hmm..." Jiang Hongdou nodded, knowing that Ji Cheng was right, she was very lucky.

Within a few words, the two had returned to the camp.

She adjusted her mentality, pulled back the topic and said:

"Then, the production of soap must also be included in the plan.

According to what you said before, in fact, we can obtain both raw materials, only one pot is missing, that is, the biscuit blank and the container.

This doesn't conflict with the plan we talked about last night, it's all about making containers. "

"Yes, to be a container~"

Ji Cheng responded, found flint from the camp, walked back and said, "So let's make stone axes."

"?"

Jiang Hongdou was stunned: "Because I want to make a container, so I made a stone axe? It's illogical...Why?

Doesn’t the biscuit billet have clay, knead the shape, and then burn it? "

"Ah, the most primitive thing is this, but, do you remember what I said, by obtaining better clay to improve the quality and success rate of biscuits?"

Ji Cheng said, "This time I want to improve something else."

"What else?"

"Beautiful."

"Huh?...Okay, looks good?" Jiang Hongdou's face was strange: "Why do you always care about whether it looks good or not, as long as it is easy to use!"

"Hey, how can you think that way, what you said is equivalent to saying that it's the same even if you are covered with a quilt.

How can that work!It still looks more sensational, better output kinetic energy, good-looking and easy-to-use. "

"What?......"

"Cough, no, it's nothing, I mean the biscuit biscuit, good-looking is also linked to easy-to-use."

Ji Cheng coughed and said, "A crooked, messy bowl is definitely not as easy to use as a well-proportioned, round bowl, right?"

"Uh, well, it is indeed..." Jiang Hongdou thought about it for a while, and then said: "But the smooth and well-proportioned pinch can't be made?

Oh yes, you said that you need to make a stone ax first, can it improve the appearance? ...well, how exactly? "

"Stone-making axe, logging, chop a piece of wood, use an ax to cut it into a wooden wheel, put the clay in the middle of the rotating wooden wheel, and as it rotates, you can knead it again, it's called a potter's wheel, trust me~ "

"Um... well."

Jiang Hongdou didn't ask any more questions, she naturally believed in Ji Cheng and her husband.

No nonsense, just work.

She nodded, brought a piece of flint, picked up another stone from the ground and said: "In terms of specific skills, I will teach you, you can watch it.

To strike a stone tool, the first part of the blade is to be picked up and knocked. Use this posture of swinging the knife sideways, and quickly knock it obliquely downward.

Then, the side part of the blade should be placed on the ground and knocked, like this, pressing the stone with one hand, holding the flint downward with the other hand, and cutting from both sides at the same time.

In this way, while knocking, while watching the situation, the two knocking methods are carried out alternately, and finally knocked into shape. "

"Oh...it's amazing!" The girl only demonstrated a little bit, and Ji Cheng had already seen the trend of the stone ax forming.

He held his breath, studied hard, and then practiced.

Girls act as instructors and teach from the sidelines.

After about half an hour, the ax face was hammered.

Ji Cheng picked it up, cut a hole in a piece of wood used as the handle of the axe, stuck it in, and tied the inlay with a rope.

So far, they finally got their first stone ax and entered the Stone Age!

congratulations!

Then, the two went to the forest to chop down a tree with great effort, then dragged it back with great effort, and began to sharpen the wooden wheel with great effort.

This process directly consumed the entire morning.

When it was time for lunch, the two who had been working non-stop managed to assemble a wheel that could be placed on the ground and turned sideways.

After dinner in the afternoon, I was finally able to start making biscuits.

Ji Cheng was still in charge of the physical work, manually turning the simple pottery wheel.

Yes, it’s a simple version again. They don’t have gears on the pedal pottery wheel, and they can’t make it for the time being. Now they can only be turned by manpower.

That is to say, beating by hand, like a spinning top.

Jiang Hongdou was in charge of fine work, according to what Ji Cheng said, he made a pile of wet clay and put it in the wheel.

With experience in kneading, she reached out and tried it, and was immediately amazed.

"Wow! As long as you put your hand on it, it will take shape after a few turns. It is exactly as you said. Well, this pottery wheel can make beautiful containers, very even!"

"Yes...but you will sigh later, move quickly now."

Ji Cheng urged a little.

Spinning a spinning top will not make you tired, but people will definitely get tired.

Jiang Hongdou came back to his senses, glanced at the sweat oozing from Ji Cheng's forehead, and reacted, and quickly settled down to knead the shape of clay.

She got started quickly, but it still took a long time to knead the basic containers they needed.

Ji Cheng rested a few times in the middle, and when night fell, the two finally put the prototype of 2 bowls, the prototype of a large plate, and the prototype of a small pot into the kang to start firing.