(ps: Many classmates were stunned, shrimp??? Why did you suddenly cross over~~~~ Haha, well, explain, in fact, before, Dizi said that the volley meaning article is a new article, a new article like science fiction, but it will not be opened separately, and it will continue after this article, but it will be written according to the structure of the new article. Some students probably can't get used to it, but Dizi has always wanted to challenge this bit of a sci-fi article, which feels very cool, and this one is just to satisfy his dreams. The ending must be together between the two, so if you don't like this style, you can not chase it, anyway, you know that they will be together. ）

Madame Rowling glared at him: "I can't bear to look so beautiful and cute, but people with black hair can't be dyed, right?" I've lived for so many years, and I've never seen hair so black so purely, and it's no wonder it's a sensation, it's a miracle. ”

"I'm afraid not."

Professor Dürer rarely showed a bit of seriousness and prudence, and turned his head to look at Jun Yiyi with a complicated look, and there was surprise in his brown eyes, as well as a trace of unexplained pity.

"I just cut a bunch of her hair for an experiment, and it wasn't dyed with chemicals, but it was the same color."

Mrs. Rowling was shocked, and even more puzzled to see Jun Yiyi, what is the origin of this mysterious girl? Has bizarre black hair, a hair color that has been extinct among women for a long time.

couldn't help but reach out and stroke Jun Yiyi's long hair, her eyes were stunned: "Such soft and beautiful black hair, so vibrant, full of hope!" I had only seen this kind of hair color of women in the past. Who are you and what miracles will you bring to the world? ”

Three hundred years ago, an inevitable catastrophe occurred, an ultra-long-range supernova exploded, sending out a powerful gamma-ray burst that penetrated the Milky Way, and although the planet was 9,000 light-years away, it was still inevitably destroyed by the rays that destroyed the ozone layer.

The ozone layer, a protective layer that blocks all kinds of cosmic rays, was destroyed for only a few hours, but it brought indelible damage to the world.

One-fifth of the world's population has died due to intense radiation, and many species in the biological kingdom and the plant kingdom have also become extinct.

The rest of the human race, although they did not die from this catastrophe, but also because of the radiation caused genetic mutations, various new diseases, cancer epidemics, at that time death was commonplace, at any time to every country, family, this tragedy lasted for hundreds of years.

Time will heal the scars, the rapid development of science and technology and medicine, so that the sequelae of this great disaster gradually recovered, the world is prosperous and developed again, human life is thriving, stepping into the high-tech era!

However, time also has incurable scars, and even this tragedy carries over to future generations.

As a result of exposure to radiation, the fertility rate of human society as a whole has dropped dramatically.

Women, in particular, are naturally weaker than men in terms of physical function and are less able to adapt to harsh environments. The mortality rate of women in that catastrophe was the highest, and the part that survived was also the group that suffered the most from the mutation.

One of the most fatal problems is that women's eggs and nests are degenerate, the activity of eggs and children is low, and the menstrual cycle is prolonged, so that up to one-third of women of childbearing age are infertile now.

The fertility rate of the remaining women is not ideal, difficulty in getting pregnant is a common problem, many women seek pregnancy throughout the birth cycle, and they can only give birth to one child after hard work, and the miscarriage rate is extremely high.