Liu Changan has never had a child with a woman, and of course he has never had a child, let alone split a descendant or anything like that.

When he was not a human being, he did not inherit his genes or some kind of origin of animals and plants.

From the standpoint of any creature that relies on reproduction to pass on life and maintain the existence of the race, this process is of great significance.

It is not a great epic that can be depicted in any text, poem, film, play, etc.

With the birth of life, how many ethnic groups have gone through calamities in order to reproduce and inherit, struggling to survive in the face of countless crises and catastrophes, looking for the slightest opportunity to pass on life.

No matter how difficult and difficult the environment is, there are hymns of life, deserts, snow-capped mountains, volcanoes, deep-sea trenches, and countless lives are all over this small and small earth.

There are also a lot of genocides, because it is definitely not a matter of course for life to be passed on.

Some genocides are even just unlucky.

Liu Changan has witnessed the disappearance and concealment of countless lives, prosperity and growth, and even witnessed some creatures become indifferent in the long years.

As an observer, this is an interesting thing, no less than feeling the vicissitudes of the earth's crust.

But he doesn't have a descendant, and he doesn't need to pass it on, because he's the heir.

Even so, he has tried, and countless women have tried, and so on...... None of them could have a child with him or anything.

"They can't have children with me, it's not their problem, it's mine. Liu Changan shook his head, "You can't either." Don't you know that you've been with me for so long, and you haven't used contraception, and you've never conceived a child?"

Su Nanxiu raised her hand and gently stroked her lower abdomen, although there was nothing in it, but as a woman, creating life in the belly with the person she liked was the most sacred expression of the beauty of life.

"Just because I couldn't before doesn't mean I can't now. Su Nanxiu tilted her head to look at Liu Changan and lifted her skirt, "I don't believe you try it." ”

Su Nanxiu's skirt just pressed the instep, her hands clenched into fists and clutched more hip fabric, the skirt swayed to reveal a delicate calf, and then the side seam of the skirt parted, and a smooth and slender leg was faint.

The body of a girl, a mature woman is good at showing her own style in the small movements.

"I've tried it with you countless times, so don't talk about these things. Liu Changan was not tempted, he just smiled, "What's more, how can you try this kind of thing casually?"

Many things have already been known and there is no hope, how can they be casually aroused to try again? Not to mention that the object of the attempt is Sunan Xiu...... Once he tried it with her, could he still lift his pants and not admit it?

Su Nanxiu turned a deaf ear to Liu Changan's refusal, but a faint blush climbed up from her neck, crawling and crawling, as if her sheets that night were soaked in water, dyed.

"It used to be before, and now it is now...... Su Nanxiu walked over, pulled Liu Changan's sleeve, and let go of his hand, revealing a very confident look, "You couldn't have offspring with other women before, because there was reproductive isolation, and their fragile bodies were unable to support the offspring of the immortals. ”

Liu Changan looked at the delicate Sunan Xiu, of course the appearance of this soft girl is just the appearance, Sunan Xiu has obtained the ability of the vampire Lady Karnstein, does she mean that after her body is transformed, she has the ability to conceive offspring with him?

"For eukaryotes, no matter how different they are morphologically, reproductive isolation is the key to whether two groups can truly differentiate into different species. There are many types of reproductive isolation, such as ecological isolation, mechanical isolation, behavioral isolation, and so on...... Just like elementary school students know that red crickets look almost indistinguishable from Fulton crickets, but because of their different chirps, they don't mate. Su Nanxiu frowned slightly, and thought for a while, "If it's more difficult for you to understand this, I'll give you a suitable example." Nowadays, many men and women communicate on social media, but many men do not notice that their memes are not in harmony with the women they are pursuing, or their styles are very different, which makes it difficult for them to reach a consensus on mating. In fact, this is also a manifestation of reproductive isolation. ”

Liu Changan opened his mouth, it was the first time he had heard such a nonsense performance of reproductive isolation.

"You don't have to explain to me, I'm a student of biology, and I've talked to Professor Crick, I'm not an elementary school student who needs science. Liu Changan felt that Su Nanxiu's example was too inappropriate, for example, he would sometimes send An Nuan an an emoji with glittering roses such as "Internet thread, cherish this relationship".

He believed that he and An Nuan had reached an agreement on some kind of intimacy in the future.

"I know you've definitely thought about reproductive isolation, but most of your research has focused on things like genetic structure, genotype frequencies, and gene frequencies. Without considering the environment that the mother can provide, the genetic instinct is to reproduce, but if the pregnant woman dies during the reproduction process and cannot be passed on, her genes will instinctively reject her egg to inoculate it into a fertilized egg. ”

"Our children may have a gestation period of more than a short period of about 266 days, maybe 2666 days is unknown, or even longer and longer...... How can an ordinary woman be able to endure such a long pregnancy? What's more, in the process of growing up, our children should absorb more nutrients and burdens to the mother than ordinary fetuses, which ordinary woman can provide?"

Su Nanxiu looked at Liu Changan, who showed a thoughtful expression, took his hand and put it on his soft lower abdomen.

Feeling the softness and gentleness of the tentacles, Liu Changan's palm had been pressed on it countless times and gently stroked, as if the palm also had a memory, Liu Changan came back to his senses and looked up at this familiar face in a trance.

He pulled out his palm, he knew it was like this, why bother in the first place?

"If so...... You can't afford it, and you can't provide it. Liu Changan shook his head, "You think you are no longer an ordinary person, but in my eyes, you are not much different from ordinary people." ”

"If you don't try, how do you know?" Su Nanxiu felt that Liu Changan's attitude was too inactive, which was completely unexpected by her. He was also a scientific research worker, so in the exploration of unknown fields, shouldn't he have the courage to try and actively try? In the face of her suggestion, he refused without trying, which was really annoying.

"I also have my favorite children, if it is simply for scientific research needs, I don't have a very strong will, you suddenly put forward such a suggestion, I can't accept. Liu Changan showed a smile on his face, "What's more, look at your Zhu Juntang, when I think of if I have a child with you, I will be educated to look like Zhu Juntang, I think it's better not to have this child." ”

Su Nanxiu was speechless for a while, and couldn't think of how to refute such a view.

"We'll talk about it when we have time. Liu Changan waved his hand and walked out of the warehouse.

Su Nanxiu came back to his senses, knowing that such a thing was in a hurry, and he may not be a little tempted...... A hundred years have passed, what's the hurry?

Su Nanxiu followed Liu Changan back to the house on the ground with an expressionless face, and watched Liu Changan walk out, Su Nanxiu called Zhong Qing, and his voice became mature and cold: "Zhong Qing, grounding Zhu Juntang for a week!"

"Ah, why?"

"There is no why!"

Hung up the phone on the other side, Zhong Qing looked back at Zhu Juntang, who had just returned from Zhonghai and was directing the "door master" to run around with a plate in his mouth, did the third lady do anything to make the third lady angry?

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The book review activity has started again, and this time the rewards are still extremely rich, and there will be very rare amazing rewards, so you can pay attention to it.

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