How about a woman with a big hip?

As the saying goes, a woman with a big ass is a wide pelvis.

Ancient medical technology was underdeveloped, so the infant mortality rate was high, and women with wide pelvis had more advantages in giving birth.

This is the experience summed up by the ancient working people.

It doesn't matter now, medical technology is developed, and it doesn't make much difference whether the pelvis is wide or not.