"Miss Jiang, Miss Jiang, what are you thinking?" The second girl called Jiang Yu, who was stunned.

"Huh? Oooh oh. Jiang Yu took the chopsticks and bamboo tube in Erniu's hand.

Erniu lifted a wooden board wrapped in a white cloth again, and Lin Xiaoxi took the bamboo tube.

Jiang Yu stretched his chopsticks into the bamboo tube and dipped a drop of water.

Jiang Yu raised the infrared laser pointer, passed through the water droplets, and shone the image onto the wooden board in Erniu's hand.

Lin Xiaoxi changed the direction of the selfie stick and let the light shine on the wooden board.

"See? These microorganisms that are moving, which are in the water droplets, you can understand as very small animals. ”

"It's something we can't see with our eyes, and in fact we're only seeing part of it now, and there's something smaller that we can't see."

Villager: "Ah, don't we all drink water with the animals in the water?" ”

Jiang Yu nodded: "That's right, but some microorganisms are harmless to the body, and even have benefits." So you're okay with the drink. However, many microorganisms are harmful to the body! ”

Villager: "Huh? But are we all right? ”

Jiang Yu: "Do you think if I pat you lightly with my hand, you will die?" ”

The crowd shook their heads.

"Then if Shi Yanzheng slapped you hard, would you die?"

Everyone hesitated, everyone had seen Shi Yanzheng's strength.

The soldier was kicked out and never got up again.

"So, some microorganisms are like my strength, and they are harmless to you if they drink it, but some microorganisms are like Shi Yanzheng's strength, if he is lighter, you may be slightly injured, and if you are serious, you may be disabled, and if you use all your strength, you may die, this is a microorganism that is harmful to you."

Everyone looked at each other, which completely subverted what they had been thinking all along.

Villager: "What should I do?" ”

"It's very simple, there is water that we can't drink, we don't drink it. If you really can't help it, then try to clean up the water before drinking, and let Mr. Jiang teach you this later. Most of the water is drinkable, but be sure to boil it to drink. ”

Villager: "Will those animals die if they are boiled?" ”

Jiang Yu nodded: "The water that can be drunk, the harmful microorganisms in it, as long as it is boiled, it can be killed, and you can drink it with confidence." ”

"So, my first request to you is to boil the water and drink it, unless you are about to die of thirst, then I will not care if you drink urine."

Everyone: "......"

No, they don't want to drink......

"Can it be done?"

Everyone: "Yes!" ”

"It's too quiet, tell me, how can I drink water?"

"Water has to be boiled to drink!!"

In the forest, some of the little birds that had just returned were shocked by the movement of the crowd......

Jiang Yu nodded with satisfaction: "Next, Lin Xiaoyun and Lin Daniu will set up an inspection team to check whether everyone has done it as required, and then report to me, I hope you will do it seriously." ”

"Okay, let's move on. As I mentioned earlier, many microorganisms are harmful, and these microorganisms are the main culprits of many diseases. ”

"For example, you know tuberculosis, right?"

The adults nodded, and the children were confused.

"Tuberculosis is contagious because of these harmful microorganisms."

"There's a harmful microorganism that can make people get tuberculosis. A person gets tuberculosis because he has a lot of these microorganisms in his body, and although they are small, they are numerous! So it can quickly defeat the person and make the person infected with tuberculosis. ”

"So why is tuberculosis contagious? Does anyone know? ”

Everyone: "......"

Lin Xiaoxi held up the selfie stick and said excitedly: "I know! I know! ”

"Then tell me about it."

"Because of these animals, uh...... Micro and microbes have run to others. ”

Jiang Yu nodded with satisfaction: "That's right, the reason why tuberculosis is contagious is because this microorganism runs to others, and then runs into your body through your eyes, mouth, nose or trauma on your body." ”

Lin Xiaoxi, who was recognized, trembled slightly with excitement and selfie sticks.

Jiang Yu: "The most terrifying thing is that these microorganisms are very capable of life!" How capable is it? It takes about a quarter of an hour to give birth to a generation. If there is only one microorganism at the beginning, then after a quarter of an hour it becomes two, two quarters of an hour it becomes four, half an hour is sixteen, and one hour is two hundred and fifty-six,...... If this continues, in four hours, it will become two or three million! ”

"Then these microbes will not only quickly defeat your body and make you infected with tuberculosis, but also run to more people and more people will be infected with tuberculosis."

Everyone was a little dizzy by these figures, there was no way, they were all peasants facing the loess with their backs to the sky, and they couldn't read big characters.

It is also thanks to Jiang Yu's easy to understand and very convincing in their hearts.

……

That night, Jiang Yu gave everyone a science popularization of microorganisms and water to boil and drink.

Adults feel like the whole world has been turned upside down.

But the children felt that they had opened the door to a new world and were very curious.

Sanxi also jumped over and asked Jiang Yu to borrow an infrared pen to see.

Jiang Yu also patiently taught her to do this experiment.

When Sanxi successfully illuminated the microorganisms in the water droplets, and when she came into close contact, her mouth and eyes were open and round.

Sanxi's eyes flashed with surprise and yearning.

A group of curious children all exclaimed, "Wow! ”

"I saw it, I saw it!"

"I saw it too, there's one that's moving!"

"Wow! It's amazing! ”

provoked some half-sized children and couldn't help but come over, Jiang Yu saw Lin Changsheng who was cowering and didn't dare to step forward.

She beckoned to him, "Changsheng, come here, do you want to try?" ”

Changsheng, who was named, was suddenly at a loss: "I, I...... May I? ”

"Well, of course you can!" Jiang Yu looked at him encouragingly.

……

When everyone dispersed, Jiang Yu collapsed on the cart, there were so many people, and the place was still so empty, God knows how she shouted at the top of her voice.

If it weren't for the lack of air circulation in the cave and the fact that the wounded soldiers were not fit to move, she wouldn't have chosen to be here.

Jiang Yao stepped forward, a little distressed: "Good job, hard work." ”

Jiang Yu sat up all of a sudden, and said with a smile: "Cool! Hahaha, I haven't lectured for a long time, and I always feel that something is wrong! Now, I feel like I've regained the meaning of my life......"

Jiang Yao saw that Jiang Yu began to talk nonsense again, and knew that Bai Xin was distressed.

Mr. Feng, who followed up, exclaimed again and again: "There is such a mysterious thing in the world!" Wonderful! ”

Zhong Da also ran over: "Miss Jiang, many people were injured on the battlefield before, and they died because of the deterioration of the wounds, is it because of the microorganism you said?" ”