"You just wash it like you do your clothes?" Xiaoxiao said, "First smear a little soap, and then beat it with a clothes pestle for a while, but Mr.'s clothes are too expensive, and they will be broken without a few beatings." ”

"And beat it with a wooden stick?" Qin Yu was dumbfounded. I thought there should be no problem with her washing by hand, but I didn't expect that after washing, she would still be beaten with a stone with a stick. Can this garment be beaten?

He had only seen women's laundry pestles on TV before, but he didn't expect to come across them today.

The villagers of Lujia Village are dressed in coarse linen clothes, with long trousers and straw sandals underneath. One is convenient for manual labor, and the other is that the cost is cheap, even the kudzu cloth is spun by women at home, and many times they do not cover their bodies.

Clothes made of linen can withstand beatings, but their own clothes cannot.

"You put on soap and rub it with your hands a few times to clean it, so why do you need to beat it?" Qin Yu was speechless and asked, "What kind of soap are you using, show me." ”

"Now, that's it." Xiaoxiao stretched out her hand and said.

Qin Yu looked at it fixedly, dumbfounded. The soap she is talking about is a black ball, which is made by mashing natural honey locusts and adding different spices.

Not even pig pancreatic soap, the detergency is too weak.

The soap ball is full of coarse plant fibers, and just wiping it twice can wipe your clothes badly.

Lujia Village is really out of touch with modern times! After reading it, I sighed in my heart, their cognition is still in the Ming Dynasty, it is estimated that they migrated during the Ming Dynasty, and they never went out after that, and the soap they used is so backward.

I remember that modern soap in the real sense was brought to China by foreigners during the Opium War.

Although the thing she uses is also called soap, it is completely different from the current soap.

Looks like I'm going to have to make them some soap, or I'll have to wear ripped clothes and ripped pants. Although it is more fashionable to wear, it is only suitable for hot girls, and it is enough to be a big man yourself.

While making soap, you can also teach students about chemistry in this area, just enough to put what you have learned into practice.

Tomorrow's chemistry class has a ready-made theme.

"If it's washed and broken, it's not a big deal." Qin Yu said. Anyway, he also brought two sets of change of clothes, so he didn't have to wear sackcloth like the villagers.

Mai is extremely rough and looks like sandpaper on your body, and the first time you wear it, it will definitely rub your skin into blood.

And the breathability is poor, and when the weather is hot, you sweat all over.

So even if he only brought a change of clothes, he wouldn't wear sackcloth if he wore them.

King Adi at his feet, it is okay to wear straw sandals, after all, the skin on the soles of his feet is thick.

"Mr. Qin, all the rotting wood has been moved to the shady place in the back mountain. What to do next, you can teach everyone. Then the old patriarch walked in and said to him.

"I'll go over now." Qin Yu said. As the old patriarch came to the bottom of the Houshan stream, Qin Yu instructed the villagers to make grooves in the wood, fill them with sorghum stalks, and sprinkle them with soil.

When I returned to school after being busy, I found that Xu Da and the others were still squatting on the ground, engrossed in studying the four crossings of Chishui.

Do you need to be so attentive? I secretly complained in my heart, but after thinking about it, the Battle of Sidu Chishui is indeed too godly, giving people a sense of artistic beauty, and it is reasonable for enthusiasts to indulge in it.

……

I woke up early the next morning to prepare for my morning exercise, and it was already dark.

I found that several people were already squatting on the playground, and when I walked over, it was Xu Da, Zhu Biao, Xu Miaojin and others, who woke up early in the morning and squatted in front of the simple sand table to continue to study and discuss.

For a while, Xu Da played our side, and the rest of the people played the enemy's role to chase and intercept.

For a while, Xu Miaojin played our side, and the rest of the people surrounded and suppressed.

However, no matter which of them played us, there was no way to escape the encirclement.

These people are a little stunned! Qin Yu said in his heart, I remember that they lit the oil lamp and studied it late last night, and they simply forgot to sleep and eat. "You guys study slowly, just don't delay class."

When it was time for the morning class, all the students were in place.

"Today, the teacher is going to give you a chemistry lesson." In class, Qin Yu picked up a charcoal pen and wrote the word chemistry on the blackboard, "Chemistry is a natural science that studies the composition, structure, properties, transformation and application of matter at the atomic and molecular levels. ”

"In order to give you a more intuitive understanding of what chemistry is, let's first do a small chemical experiment."

Next, Qin Yu gave the students a vivid chemistry lesson. And it is a combination of teaching theory and experiment, and the content of the experiment is to make soap by hand. First, lard is practiced, and then alkaline water is refined from plant ash.

Because of the complexity of the process, the test was moved outdoors.

"Teacher, tell us another story." Just as the crowd was making soap together, Zhu Biao proposed again.

Who doesn't like to listen to a teacher's story?

"Still want to hear military stories?" Qin Yu said, "Seeing that you are so energetic in your research, have you studied Sidu Chishui thoroughly?" When you have studied it thoroughly, the teacher will tell you about the three major battles. ”

"To put it bluntly, there are two key points, the first is to concentrate superior forces to fight more and less, and the second is to encircle the point to send reinforcements."

"These two points are simple to say, isn't it to fight more and less to surround the point to send reinforcements, but in fact, the real difficulty lies in how to mobilize the enemy. Fighting more and less and encircling points to send reinforcements are all appearances, and mobilization is the essence. ”

And what is the key to mobilizing the enemy? That is guerrilla warfare and movement warfare, the so-called guerrilla warfare ......"

The crowd listened, and was enlightened.

I have a deeper understanding of the previous four crossings of Chishui.

"Then sir, tell us about the three major battles now." The crowd said impatiently.

"It's like playing a game, you're afraid to indulge in anything." Qin Yu said, "Yesterday I just told you about the Battle of the Four Crossings of Chishui, and the few of you have been studying non-stop without sleeping or eating. Sleeping late at night and waking up early the next morning will definitely affect your studies. If I tell you a little more military stories, I don't know what you'll be addicted to. ”

"In order to prevent addiction, the teacher must give you a change of taste today." Qin Yu said, "I'll tell you...... Kokushu flow. After that, I will talk about mortal cultivators and immortals, Douluo Continent and Emperor Desolate Heaven, as well as watchmen and girlfriends......"

He has read too many classic online articles, and he really wants to share them with this group of ignorant and knowledgeless mountain children.

No way, remote mountain villages, there are no entertainment activities to pass the time, only to tell stories.

"In addition, please keep in mind that Emperor Desolate Heaven is stronger than Emperor Ye Tian." Qin Yu said again. He himself can't argue with those Internet trolls on the Internet, so he plans to use his own views to forcibly brainwash elementary school students so that they can join his camp in the future.

"Teacher, let's talk quickly, we are all a little impatient." Xu Miaojin said.