Some friends in Suiren Vocational and Technical School are still staying up late to cultivate themselves.
But some friends have already gone to bed early.
In a certain dormitory, there was no other noise except breathing, and it was very quiet.
Buzz buzz~
An inappropriate voice appeared.
The owner of the voice flapped his little wings and came to the bed of a sleeping girl.
Using the carbon dioxide exhaled by the girl as a scent clue, it soon came to her legs.
This mosquito quietly landed on the skin somewhere on the leg, thinking that this human being with delicate skin and tender flesh should be able to have a full meal now.
But the girl seemed to be disturbed by Mr. Mosquito’s voice and turned over.
Mr. Mosquito was startled and hurriedly flew up to avoid it.
After realizing that there was no danger, he picked another area of thin skin and tender flesh, then rubbed his straw with his claws, and finally inserted it in, directly piercing the skin. The mosquito began to enjoy a feast of blood.
.
After eating and drinking, Mr. Mosquito began to buzz again and began to invite friends to enjoy the feast of fresh blood in the dormitory.
Early the next morning
A harsh scream echoed throughout the dormitory.
"An'an, why are you crying like a wolf?"
A girl was combing her hair in front of the mirror, otherwise she heard the screams of her roommate named An An coming from the toilet.
Then, a pretty girl in pajamas ran out of the toilet.
"Minmin, look, I have several mosquito bites on my face and hands. How can I go out to meet people today?"
An An pouted and said.
"I thought something was wrong. You put some powder on your face to cover it, then come back and use Fengyou Essence to remove it. It will be fine soon!"
Minmin put down her comb and went to her bed to pack her things.
"That can only be like this, but I had an electric mosquito coil last night. How could there be mosquitoes?"
An An said helplessly.
"Look at what you said. This is Lingnan. There are no mosquitoes anywhere in the south. If the electric mosquito coil is turned on, wouldn't the mosquitoes be immune? I asked you to buy a mosquito net before, but you insist on not wanting it."
Minmin rolled her eyes.
"Am I saving money?" An Anqiang explained.
After I finished speaking, I remembered another sound like killing a pig in the toilet:
"Damn mosquitoes, ah, ah, ah, my beautiful face! Uuuuuuu~"
An An and Min Min looked at each other.
Got it! Another victim!
.....
At this time, Class 3 of Crude Medicine
Many students have already arrived.
This class is Zhang Chong's. At this time, he has come to the classroom with his laptop and is testing the multimedia equipment in preparation for class.
After preparing these, he found that many girls in the classroom were wearing masks, which made him a little confused.
"Let me tell you, lesbians, why are you wearing masks in class? Don't you find it boring?"
Although it is already September, the weather here in Fengcheng is still hot, and it is very boring to wear a mask in class.
"Teacher, I know they are shameless."
A naughty boy shouted, causing other boys to burst into laughter.
This made the girls very angry.
"You guys are so shameless!"
"Then tell me why you are wearing masks?" Another boy asked.
"That's not to guard against you stinky boys!" a girl retorted.
"Well said sister!"
Seeing that the trend seemed to be getting worse, Zhang Chong hurriedly stopped it.
"Okay, please calm down!"
Suddenly, everyone quieted down and stopped making noise.
"Any girls tell me why you are wearing masks? I need a reason."
Zhang Chong continued.
"Teacher, we were bitten by mosquitoes yesterday, and our faces were covered with mosquito bites."
Then, a girl raised her hand and answered.
"Mosquito bites?" Zhang Chong was stunned for a moment.
"Yes, teacher, you don't know how fierce the mosquitoes are in our school. Even if we turned on the electric mosquito coil when we slept yesterday, it would be useless."
"The mosquitoes were buzzing all night long, making me unable to sleep."
"No, if I catch these nasty mosquitoes, I will definitely cut them into pieces!"
When this is mentioned, the girls start to complain.
"Calm down now. I probably know what's going on. Just buy a mosquito net and hang it up in the future."
Zhang Chong waved his hand and said.
After listening to this, the girls began to think that installing mosquito nets was very troublesome and they would have to take them out and wash them when they went home for the holidays. They might as well just get an electric mosquito coil.
After hearing the complaints from the girls, Zhang Chong suddenly thought of an idea and preached to the students:
"In that case, teacher, please help you solve this problem!"
The girls were all stunned.
Even the boys watching the show were attracted and looked at Zhang Chong.
In fact, these boys were also harassed by mosquitoes last night, but these rough guys were bitten not on their faces, but on their thighs and hands. Although it was a little itchy, they applied some ointment and endured it. p>
But now Zhang Chong seems to have a way, which may also allow them to get rid of the mosquito infestation.
"Ahem, in fact, the teacher and the principal have obtained two mosquito repellent and insecticides in recent days. The preliminary experiment is successful and the effect is not bad. If you want it, I can apply to the principal."
Zhang Chong explained.
This aroused the curiosity of the students even more.
"Teacher Zhang, is this potion safe?"
A student asked.
"Of course it is safe. You should all know the chemical ingredient pyrethrin, right? This ingredient is often included in many electric mosquito coils, but the concentration is usually very low, otherwise too high a concentration will be harmful to human health. I
I researched with the principal that these two mosquito repellents do not contain pyrethrins."
Zhang Chong nodded.
"Then teacher, please help us apply!"
"Yeah, let's see how effective the mosquito perfume made by the teacher and principal is. Let's treat it as an experiment."
Students responded positively.
"Okay, but we don't have a lot of medicines. There are mainly two types of mosquito repellent sprays and electric mosquito coils. At present, we can only supply enough for our class. I will tell the principal later."
Zhang Chong agreed.
"That's great!"
The students were also very happy. Although they did not see this effect with their own eyes, they were still happy to participate in such an interesting experiment.
"Okay, let's go to class now!"
So, the lecture phase officially entered. No student in the class was distracted, and they all listened attentively.
Time passed quickly and it was time for get out of class to end.
After Zhang Chong cleaned up the desktop, he went directly to the principal's office to tell Xu Li about it.
Xu Li also agreed.
"Okay, we'll make fifty-nine servings in these two days. To target female mosquitoes, we'll make a mosquito repellent liquid, and to target male mosquitoes, we'll make a spray."
"Good principal."
Then, the two people hurriedly made fifty-nine samples, and then asked Zhang Chong to distribute them to the students in the class for them to experiment.