In my memory, the basis for judging that summer has not arrived is not that the day is long, the sun is very hot, and you can eat watermelon, but the series of irritating cries. Yes, you guessed it, you know the high and never-ending cry of Zen. Like I heard from the big people since I was a child, it sounds very pleasant, and now the environment is changing too fast, this call has not felt as energetic as childhood, maybe the new generation now has no understanding of this creature, today I will come to popularize the past and present lives that have been known.
Life:
The eggs that are born are generally developed into larvae after three to five years underground, and the larvae molt and become cicadas. There are two kinds of cicadas, the female does not bark, the male does not bark, and the call is to attract a partner. Cicadas survive by sucking the sap of trees, so they generally cling to trunks or branches. After mating, the eggs briefly survive in dead branches, then drift to the ground, seep underground, and develop into larvae in the following year. All the eggs that want to be found can be found on some dead branches.
Then, in the spring and summer of the following year, the cicada eggs hatched into larvae. The newly hatched larvae climb up the trunk to the ground or fall to the ground, then find loose soil to drill into the ground, and the larvae suck the sap of the roots of the tree by means of a stinging mouthpiece. When the larvae grow up, they climb out of the ground, take off their shells, and when their wings harden, the male cicadas sing on the branches: "Got it" and mate with the females. Cicadas die soon after mating and laying eggs, which is basically a life of knowledge. What about its past life?
Past
Zhi has appeared in this world very early, according to relevant records, knowing that in the Jurassic era has existed, and the Jurassic era has a history of 200 million years, this discovery will be a big step forward in the history of knowledge, the ancestors of the knowledge is likely to be a creature called ancient cicada, the fossil of this creature was found by relevant people in the Mesozoic Era of Western Liaoning, people think that this may be the earliest evidence of the existence of knowledge. Similar to the ancestors of pigs, the ancient cicadas are basically the same as the biological structures known today, with characteristics that are obviously different from other insects, such as two wings and compound eyes.