There are 4 reasons:
1. The old economy was dominated by manual labor. Girls were not as strong as men and were considered to be worthless.
2. Feudal consciousness Men are superior to women, men are superior to stones, and women are inferior to grass
3. Ancient Yin-Yang theory, men are Yang-fire, women are Yin-grass
4. Modern aesthetic point of view, beautiful men are not masculine Ah, the beautiful woman is shy of the moon