The two of them took a leisurely walk on the path of the butterfly pavilion and admired a variety of beautiful butterflies.

Looking at the popular science display on the side of the road, I learned a lot about butterflies.

For example, butterflies do not have a heat-producing system, so they need to use sun exposure to regulate their body temperature and use their wings to regulate their temperature.

When the sun shines directly, the scales will automatically open, reducing the radiation angle of sunlight and absorbing less heat energy from sunlight; When the outside temperature drops, the scales automatically close and cling to the surface of the body, allowing the sunlight to shine directly on the body so that it can absorb more heat.

In this way, keep your body temperature within a normal range at all times.

The temperature control system on the satellite is designed to mimic the scales of a butterfly.

During the winter, butterflies turn their heads to the south like a compass in order to observe their surroundings and soak up the warm sunlight.

The famous monarch butterflies and their migratory journeys are naturally also introduced.

Like the migratory birds of the insect kingdom, monarch butterflies form flocks of more than 100 million in August and September, cross North America, overwinter in the pine forests of California and Mexico, and return north in spring.

With so many butterflies gathered together, the scene was very spectacular, the butterflies on the trees were one by one, densely packed with colorful butterflies, dyeing the woods all orange-red.

The migration of the monarch butterfly is a generational transition, reproducing while migrating, and after the older generation of butterflies dies, the children will relay and move forward like a frog. A round-trip migration will be completed by five generations of butterflies.

They migrate about 130 kilometers a day, and the distance can be up to 5,000 kilometers.

Tang Xiaoxin looked at the display signs, imagining the scene of their migration, and couldn't help but feel a little excited!

These fragile elves, thin as pieces of paper, have such a clear purpose, using the sun as a compass to fly straight in one direction.

Flying high above the curved surface of the earth, enduring weeks of continuous flight, flying thousands of kilometers, ending a short life, leaving behind their offspring, let the offspring carry their own genes to continue to move forward.

It's an incredible and romantic animal.

But the content that followed made her heart heavy.

Over the past 20 years, monarch butterfly populations have declined dramatically, reaching the brink of vulnerability or even endangerment.

One reason is habitat reduction, illegal deforestation, and the destruction of large numbers of coniferous forests.

The other is the use of a lot of herbicides and insecticides, which reduce the milkweed they depend on for their livelihood.

And with global warming, carbon dioxide levels are increasing, which can make milkweed more toxic than larvae can tolerate.

With more abnormal weather, a cold wave can kill many caterpillars and hatch fewer butterflies.

Insects are an important component of biodiversity and play a vital role in the functioning of ecosystems, for example, pollinators around the world generate hundreds of billions of dollars in value each year, but receive little public attention.

Recent studies have shown that the global insect population has been declining at an annual rate of 2.5% over the past 30 years, and now more than 40% of insect species are declining, and about one-third of the species are endangered, with butterflies, moths and bees declining the most.

Intensive industrialized agriculture, overuse of pesticides, urbanization, and increasingly frequent and unusual climate change are the main factors contributing to the sharp decline in insect populations.

Next to the sign, there is also a specimen of a monarch butterfly, which is quietly sealed in glass.

Compared to other fluttering butterflies, it looks a little dimmer.

Tang Xiaoxin stared at the specimen and pondered in her heart.

Thinking about the butterflies in this garden, if they have all become dry specimens, it is still quite sad to think about the beauty of their lives in this way.

If there is no attention and protection, if it continues like this, ten or twenty years, it may become a real scene in the future.

"Don't cry, let the fireflies run away with you, the country songs will always rely on ......"

In the past, fireflies were very common, and there were stars in the fields at night, how romantic and beautiful scenes there were, where can you still see them now?

Along with frogs, dragonflies, bats, and other animals, they disappeared without a sound.

"Eh~"

Tang Xiaoxin sighed softly, and couldn't help but think of the local exhibition area in the zoo.

With ecological pest control, without pesticides and fertilizers, it also provides a habitat for various animals, and people and nature coexist in harmony.

Some hope rose again in my heart.

……

After visiting the butterfly pavilion, I came to the cherry blossom forest.

Beautiful cherry blossoms hang from the treetops, and all you can see are romantic pink.

A refreshing spring breeze blows, the petals on the tree sway slightly, bathed in the golden sunlight, and the translucent petals seem to exude a faint fluorescence, pink and beautiful.

Tourists walked around, enjoyed the beautiful scenery of the cherry blossoms, and raised their mobile phones from time to time to take pictures to record this romantic scene.

Tang Xiaoxin approached the cherry blossoms, took a deep breath, and smiled on her face: "It smells good!" Is this what happiness tastes like? ”

Qian Keke raised his hands, closed his eyes, hugged the cherry blossom forest, and showed an intoxicated expression: "Wow, it's amazing, I really want to lie here and sleep!" ”

"Don't sleep, keep shopping!"

"I'm just talking about it~"

When I went to the Snow Monkey Museum, the snow on the temple square had melted, and the pond was filled with green water, and it seemed that it had changed from hot springs to ordinary water.

You can't see the snow monkeys soaking in the hot springs, but it's a pleasure to see the monkeys frolicking against the backdrop of cherry blossoms.

Snow monkeys are swimming in the pool, paddling through the water, rippling and rippling beautiful cherry blossom petals.

Others jump up and down on the cherry blossom trees, swinging the branches of the cherry blossom trees, chasing and frolicking.

Occasionally pluck a petal and stuff it in your mouth to taste the taste.

Two little monkeys, hugging and rolling into a ball.

The Monkey King Dahei was squatting on a rock, his eyes scanning the little ones playing.

It looks withdrawn and not easy to mess with, but the eyes are very gentle.

After playing around for a while, a little monkey ran to Dahei's side and dragged him, as if he was about to pull him to play.

Da Hei was dragged a little helplessly, and helped the little monkey comb his fur.

The little snow monkey that was combed had its eyes narrowed and looked very comfortable.

But after combing twice, Da Hei's movements stopped. I just brushed my hair, but I didn't want the little guy to make a fuss about his perfunctory behavior.

Seeing this, the little snow monkey raised its head, as if expecting Daikoku to continue to comb it.

Da Hei jumped off the stone and changed his position to continue to stay.