Is it related to having boys and girls, housing or feng shui?

According to the current science, it doesn't matter, because what science can't explain is called the unknown, just like other departments of the country. But is this really the case? I have seen with my own eyes that people in a village can almost become extinct naturally by doing geomantic omen, but it is hard to know whether this has anything to do with having boys and girls. No matter what you say upstairs, it's hard to explain scientifically. If the fertility of men and women is only controlled by pH value, there is no need for B-ultrasound. Generally speaking, science and feng shui are owned by believers, but not by unbelievers. Controlling acid-base combination and feng shui is the most reliable.