On that day, more than 20 garbage cans were brought in from the town and placed them in various parts of the village, especially in places where the crowd was concentrated.

The problem of the public toilet, under the contact of Zhang Fan, was also delivered the next day, and it was solved in a few hours in front of the villagers.

Some villagers even went in to experience the clean toilet, which was praised by the majority of villagers and tourists. Tourists are finally less embarrassed to go to the toilet.

"Come tonight, do you want to be together?" asked one of the little guys around him.

This proposal was immediately echoed by the other little ones.

"What time is it?"

"Half past eight, okay?"

……

The surrounding tourists were stunned, stunned, and finally burst into laughter.

What kind of weird thinking is this?

The parents of those children have black faces, so all the embarrassing words are spoken out in public?

So, they each carried their own boy back, so as not to stay here and be embarrassed.

Tourists find it quite funny, children are simple-minded, and some ideas may be ridiculous in the eyes of adults.

In addition, street lamps are installed in the main event areas of the village, making it easy for tourists to move around at night. After all, there are many snakes and insects at night, and last night scared a female tourist to tears. A cauliflower snake is a snake that is not venomous, but some people are naturally afraid of snakes, whether they are poisonous or not.

The electricity bill of the street lamp is the account of the village committee's finances. At this time, everyone knew that the benefits of the village committee setting aside a certain amount of money would be very convenient for doing things.

At night, the galaxy flows, making it addictive to visitors to the big cities where they live. Such a brilliant starry sky is absolutely impossible to see in the city. From time to time, they can see the trajectory of meteors falling in the sky, which makes them even more surprised, leaving a wish in their hearts.

Above the surface, there are still floating points of light that are constantly flickering, not starlight, but fireflies that are also rare in big cities.

A large number of fireflies are flying, and catching fireflies has become the main meal activity for tourists tonight.

"Keep an eye on the children, and don't go into the grass. Zhang Fan reminded them.

Inside the luminous apparatus of fireflies there is a light-emitting cell, and inside the light-emitting cells there is a scale-containing chemical called luciferin. When it encounters fluorite, a chemical reaction occurs, resulting in the production of light. Different firefly rays last for different periods of time, ranging from less than a second to several minutes.

"How can I see fireflies under the water?" someone wondered.

Kong Lao's graduate student explained with a smile: "There are thousands of species of fireflies in this world. It can be roughly divided into aquatic and terrestrial. ”

He said that fireflies are divided into two categories, terrestrial and aquatic, according to their living environment, with the former accounting for the majority. Terrestrial fireflies mostly inhabit places with high shading, lush vegetation and high relative humidity, while aquatic fireflies have higher requirements for the environment, and the water cannot be polluted or polluted by lights.

"If you look closely, you will see that even terrestrial fireflies, some of them cannot fly, and they are female. He continued.

Zhang Fan knew about this when he was a child, some fireflies have no wings, but he still doesn't know that only male fireflies can fly.

Of course, it does not mean that all varieties of fireflies are like this, in the grass often found that the tail two points glow is the terrestrial mountain window firefly larvae, and the whole body glows black and white two-color weeping whisker larvae, the growth of the female wings of these two varieties is degraded, and the shape of the larva is not much different, the male can fly.

As for aquatic fireflies, Zhang Fan learned about them from a book. Fireflies first grow from the bottom and under the water, and when they reach a certain level, they can break away from the ground and fly into the air.

In early spring, water-dwelling firefly larvae climb ashore and burrow into the soil. At this time, the gill breathing is changed to stomatal breathing, the sides of the abdomen will glow, it takes about 50 days to become an adult pupa, the average life is only 5 days, eating and growth have become secondary, the fireflies are very active in the 1 hour after sunset, and they will have time to pursue each other, and the male will flash a bright light in 20 seconds, and after 20 seconds, the signal will be sent out again.

Therefore, their beauty is also very ephemeral.

In nature, there are many creatures that live short, and some creatures can only survive for a few hours. Born in the morning, life comes to an end before the sun sets.

"In foreign countries, there is a firefly that is more special, and it depends on eating male fireflies to reproduce and protect future generations. "Confucius Lao's disciple popularized science.

That type of firefly has not yet been found in China, and most of them live in North America. They are standard predatory insects like the adult fireflies in China, where they do not feed for the rest of their lives, or only pollen and dew. This firefly can "lure" males by mimicking the female flashes of other species of fireflies, and when male fireflies come on a date after thinking that their courtship has been answered, they will be eaten by the other party.

"It seems that praying mantis is so cruel, right?" said one visitor, reminding of creatures with the same habits.

Kong Lao's disciple explained: "Not all of them are like this, about 30% of female praying mantis have husband-killing behavior. In their state of extreme hunger, eating their husbands can ensure the smooth birth of the next generation. This kind of behavior, you can say it's cruel, it's okay, it's okay to be touching. ”

Speaking of praying mantises, I have to say that the tenacity of the praying mantis's life. When it comes to hard-hitting creatures, the first thing that comes to everyone's mind may be cockroach Xiaoqiang, but praying mantis is even more powerful, even if the head is broken, it can still survive for ten days and eight days, but cockroaches can't.

Everyone put the fireflies they caught in glass bottles, usually five or six of them, and the glass bottle is like a small electric lamp, which makes the tourists very happy.

Everyone is no stranger to fireflies, but most people don't know why fireflies emit light.

The first reaction of everyone may be to court, in nature, many animals often behave strangely to marry a wife, such as frog barking and so on.

However, fireflies emit light, mainly for the sake of communication.

Lights are their language, and through lights with different frequencies of flashing, the watch emits a variety of information.

The purpose of communication, most of which is also for courtship and reproduction, but compared with other creatures, the way fireflies communicate is undoubtedly more amazing.

At the very least, they beautify the dark night sky and make it more beautiful.

Due to the acceleration of urban progress and environmental pollution, fireflies, a beautiful and legendary insect, are gradually moving away from people, even in the countryside.

Therefore, the starry fireflies can be seen in Zhangjiazhai, which makes tourists quite excited.

It's a pity that most people's mobile phones don't have enough images to take pictures of such beautiful scenery. Only a professional camera can capture these beautiful night scenes.