Some people are born with a disease called hemophilia.

Some are born fools, which is very common in the village.

This condition is clearly caused by gene mutation.

Could it be that people here marry their close relatives?

Of course, this is just a guess, and the specific Chu Weiyue cannot be confirmed.

People of this generation don’t know what heredity or genes are, so it’s useless to talk too much to them.

After a whole day of strolling, Chu Weiyue and Wen Jingchi were exhausted.

I returned to where I lived and let out a long sigh.

"By the way, what happened to that man today? Are you hurt?" Wen Jingchi hurriedly grabbed Chu Weiyue's hand, his eyes full of concern.

Chu Weiyue pulled the corner of her lips, "It's okay, I'm fine."

Wen Jingchi hurriedly hugged her in his arms, "I'm glad you're okay! Poor mountains and bad waters breed unruly people, we should leave here as soon as possible."

Chu Weiyue nodded and agreed without hesitation. She didn't want to get involved in other people's business.

If they stay here now, they might be in danger, so the important thing is to leave as soon as possible. There is no point in caring too much.

The next morning, when Chu Weiyue got up, she heard a knock on the door.

“Here I come.”

Wen Jingchi was at home today, sitting in the yard basking in the sun, so Chu Weiyue opened the door generously.

The person who came was actually Xiaomei, a friend she met here, and the two had a good relationship.

Seeing Xiaomei coming over, Chu Weiyue smiled brightly.

"How did you find time to come and see me? Weren't you free the past two days? You..."

I remember Xiaomei told me that she would be busy with a lot of things in the next two days.

Xiaomei nodded, her eyes filled with sadness and loneliness.

This made Chu Weiyue a little puzzled, "What's wrong with you? You look so depressed, what happened? Tell me."

Xiaomei pursed her lips, and after a long time, she leaned on Chu Weiyue's shoulder with red eyes.

"How can I be happy, because I am getting married..."

Chu Weiyue was a little puzzled. "Getting married is a good thing. Why are you crying? Is it because the person you are marrying is not the one you like?"

Xiaomei didn't say anything, just sighed and got up from Chu Weiyue's shoulder.

She wiped her eyes with a handkerchief. "Actually, I can't say I like him, but I have to. Girls here can't get in touch with men from outside. Since childhood, we can only get in touch with men in our family."

"You don't know the rules here. If a family has a daughter, she will marry someone from her own family first. One of my good friends married her uncle's son two years ago, and her sister married her uncle's son.

This time my parents wanted me to marry my cousin. We have been playing together since childhood and we are very close. I only regard him as a brother and never thought of him as a husband, so I don’t want to marry him, but my parents forced me to..."

Xiaomei didn't say the rest, but she couldn't help but burst into tears.

She didn't know how to express the pain in her heart, she just knew that speaking it out would make her feel better.

Xiaomei continued to sob and expressed her distress to Chu Weiyue.

"I don't know how to put it. My cousin is a very good person, but I just don't have the kind of love between men and women for him. When I think about the fact that we will sleep in the same bed and have children in the future, I don't know what to do. I want to leave here, but I don't have the courage to run away.

I’m really scared. I’m afraid that the child I give birth to will be like my sister. People here are cursed. I also have a cousin. They were both born white, even their eyebrows and eyelashes are white. I’m really scared…”

After hearing what she said, Chu Weiyue was completely stunned.

He immediately pressed Xiaomei's shoulders and said, "Then let me ask you, are your cousin's parents also relatives?"

Xiaomei's eyes widened and she nodded without hesitation, "Yes, how did you know?"

"Let me ask you again, for those with gray hair or other diseases, or those with mental disabilities, are their parents very close, like cousins?"

There was a hint of anger in Chu Weiyue's eyes. She never dreamed that the people here could be so ignorant.

Xiaomei was even more shocked now, "Yes, yes, we do have this custom, either cousins ​​get married, or cousins ​​get married, sometimes siblings get married.

It may not be allowed outside, but it is very natural here. Before the father died, the son could inherit all the women in the family and reproduce. "

Xiaomei looked calm. In her opinion, this matter was not uncommon, and was even very common, and did not need to be subject to any moral constraints.

But Chu Weiyue was completely dumbfounded, she knew that this must be what she was thinking.

She sighed helplessly, "Xiaomei, you must not marry your cousin. Do you know why your cousin's brothers and sisters are like this? It's because of close relatives marrying.

If the genes of very close relatives are similar, the risk of certain genetic diseases will increase greatly. This is why many people here have white hair, or are disabled or mentally retarded, etc...."

What Chu Weiyue said was particularly profound and mysterious.

Xiaomei has never even been to school, let alone studied medicine.

She only half understood what he said, but looking at Chu Weiyue's serious expression, she still blinked in confusion.

"You mean to say that cousins ​​can't marry each other, and even cousins ​​can't marry each other, and even if they are siblings or brothers and sisters, they can't get married and have children, right?"

"Yes, that's what I mean. That's why many people in your village have problems. You can observe or think about it yourself. Are the parents of those sick people very close?"

The younger sister scratched her hair and said, "I don't understand what you said, but it's the same as what you said, what exactly is a gene?"

She was particularly curious about this new word.

"Is there any way to cure this disease? How can I get better?"

Such a sentence made Chu Weiyue even more depressed, and he patted her head gently.

"You idiot, this disease is genetic, how can it be cured? The only way is not to marry a relative. The closer the blood relationship, the more problems the child will have."

"Only those with distant blood relations will give birth to healthier children. As for those children born from close relatives, only one or two out of ten will be lucky enough to survive, but they will pass on bad genes..."

Chu Weiyue knew that her younger sister didn't understand these things, but in order to make her understand, she explained them patiently and carefully.

Although Xiaomei was not very educated, she listened carefully to what Chu Weiyue said.

In addition, Chu Weiyue explained it very well, so I immediately understood what was going on.