In the previous society, women's status was very low, and whether they were married or not, they were similar. They pay attention to three obedience and four virtues, follow their father at home, and follow their husband when they get married, so this makes men in ancient times have a unified feature, that is, male chauvinism, because as an era when the patriarchal society is supreme, men are often the head of the family, while women are mainly accessories, and their fate in the family is basically the same. So if you find a woman older than yourself, your dignity will not stand. If this goes on for a long time, you will be laughed at and afraid of your wife. In the past, it was a shame to be afraid of your wife, so it was natural for ancient people to avoid the important and take the light. No female freshmen? Statement.
Another point is physiological reasons. Whether in the previous society or in the present society, women prefer men older than themselves, because it is related to the psychological age. According to research, women's psychological age is generally more mature than men's. Many times, men and women of the same age will think that men's behavior is too naive, so they will find it easy to communicate with a man older than themselves, so if they find a woman older than themselves, then family.
But? Only male freshmen are allowed, not female freshmen? There are a lot of feudal ideas in this sentence, because for the present society, equality between men and women is the most important thing, and marriage actually needs three views to be consistent. Age is no longer a factor that everyone pursues.