After five years of teaching support, Daming became an empire on which the sun never sets.

Chapter 79 Chemistry Lessons

"Is it like washing clothes as usual?" Xiaoxiao said, "I put on a little soap first, then beat it with a pestle for a while. How can I know that Mr.'s clothes are too expensive, and they will be damaged after a few beats."

"Have you beaten it with a wooden stick?" Qin Yu was dumbfounded.Before, I thought it would be fine for her to wash by hand, but I didn't expect that she would be pounding it with a stick after washing it.Can this dress be beaten?

He had only seen women's laundry pestle on TV before, but he didn't expect to meet him today.

The villagers of Lujia Village wear coarse linen clothes, long trousers and straw sandals.First, it is convenient for manual labor, and second, the cost is cheap. Even the gebu is spun by women at home, and many times they are still naked.

Clothes made of sackcloth can withstand the beatings, but my own can't.

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

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

Qin Yu fixed his eyes and was dumbfounded.The soap she was talking about was a black mass made of natural acacia smashed with different spices.

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

The soap ball is full of thick vegetable fibers, and it can wipe out your clothes just by wiping it twice.

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

Remember that modern soap in the true sense was brought to the country 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'll have to make some soap for them, or I'll be wearing ripped clothes and ripped pants.Although it is more fashionable to wear, it is only suitable for hot girls, even if you are a big man.

At the same time as making soap, you can also teach students the chemical knowledge in this area, just apply what you have learned.

Tomorrow's chemistry class has ready-made themes.

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

The linen is extremely rough and wears like sandpaper. The first time you wear it, it will definitely rub the skin with blood.

And the ventilation is poor, and the weather is hot and sweaty.

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

Under the feet of King Adi, it is okay to wear straw sandals, after all, the soles of the feet are thick and thick.

"Mr. Qin, all the rotten wood has been moved to the shady place in the back mountain. What to do next, please teach everyone." At this time, the old patriarch walked in and said to him.

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

After returning to school, he found that Xu Da and several others were still squatting on the ground, concentrating on studying the four crossings of Chishui.

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

……

Woke up early the next morning to prepare for morning exercise, the sky was already bright.

I found that a few people were already squatting on the playground. When I walked over to take a look, it was Xu Da, Zhu Biao, Xu Miaojin and others. They woke up early in the morning and squatted in front of the simple sand table to continue their research and discussions.

For a while, Xu Da played our side, and the others played the enemy's siege and interception.

For a while, Xu Miaojin played our side, and the others surrounded and suppressed them.

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

These people are just a little bit stunned!Qin Yu said in his heart that he remembered that they lit the oil lamps and studied very late last night. "You guys study slowly, don't delay class."

When it was time for class in the morning, all the students took their places.

"Today, the teacher is going to teach you a chemistry class." In class, Qin Yu picked up a charcoal pen and wrote the word chemistry on the blackboard, "Chemistry is the study of the composition, structure, properties and transformation of matter at the atomic and molecular level. and the natural sciences of its applications."

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

Next, Qin Yu gave the students a lively chemistry class.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 made, and then lye water is extracted from plant ash.

Because the process is more complicated, the test was transferred to the outside.

"Teacher, tell us another story." Zhu Biao suggested again while the crowd was making soap together.

As a student, who doesn't like listening to teachers tell stories?

"Do you still want to hear military stories?" Qin Yu said, "Seeing how vigorous your research is, have you thoroughly studied Sidu Chishui? When you have thoroughly studied it, the teacher will tell you about the three major battles."

"The key to the three major battles is to put it bluntly in two points. The first is to concentrate superior forces to fight more and less, and the second is to surround and fight for reinforcements."

"These two points are easy to say. Isn't it just about using more and less surrounding points to help? Everyone can do it, but in fact, the real difficulty lies in how to mobilize the enemy. Using more and less and surrounding points to help are all appearances, and mobilization is the essence."

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

The crowd listened and understood.

I have a deeper understanding of the previous Sidu Chishui.

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

"Just like playing games, you are afraid of being addicted to anything." Qin Yudao said, "Yesterday I just told you about a battle to cross the Chishui River. Getting up early in the morning will definitely affect your studies. If I tell you some military stories, I don’t know what you will become addicted to.”

"In order to prevent addiction, the teacher has to change your taste today." Qin Yudao, "I'll tell you about... the martial arts style. After that, I'll talk about mortals cultivating immortals and fighting to break the sky, Douluo Continent and Huangtian Emperor, and more people. With my bestie..."

There are too many classic web articles he has read, and he really wants to share it with this group of ignorant and lacking knowledgeable mountain children.

No way, in a remote mountain village, there are no entertainment activities to pass the time, only storytelling.

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

"Teacher, tell me quickly, we can't wait." Xu Miaojin said.

(End of this chapter)