There are two couples next door to us. They have been married for four or five years and have not given birth to children yet. Later, they divorced, probably because they had no children, and they both divorced under the pressure of their parents.
But strangely enough, both of them remarried within less than a year after their divorce. What's even more strange is that within a year after they remarried, they both became pregnant, and later gave birth to fat, healthy children.
This makes people wonder, why can't the two of them get pregnant and have children together? After all, both people are capable of having children.
Actually, I think there are many reasons. Just like ancient people's feng shui, there are reasons for whether two couples are in conflict with each other. If two couples are incompatible with each other, then sometimes being childless means that they are destined to be childless in this life.
So when we get married, the older generation will calculate the horoscopes of the two young people to see if they are incompatible in life. If I don't conflict with each other, they can successfully get married, otherwise they will definitely be blocked by their families. In fact, I also believe this, so doing the math before getting married is good for both ourselves and our descendants.
In addition to different feng shui, another possibility is that the two people have different physiques. Because we all know that childbirth is the combination of sperm and eggs, and sometimes the physiques of two people are mutually exclusive. At this time, even if both people are normal and have reproductive functions, just because their bodies are different, even if the sperm and egg are combined together, it is impossible to completely form a fertilized egg.
But I think humans are all magical creatures, and many times we cannot explain some things using normal science.