Because both men and women will only have one seven kills, if there are two at the same time, there will only be one seven kills. Because the male life itself has the attribute of seven kills, while the female life itself does not have the attribute of seven kills.
Seven kills are the fiercest among the seven gods, belonging to the sick star in the eight characters. Because the seven kills are too fierce, they are called "fierce stars". Generally speaking, as long as it is more than two words, it is called the deputy star seven kills.
Note: The above contents are for reference only, so don't be superstitious.