Background: Due to outbreaks of disease, the number of men decreased dramatically, eventually leaving only one-fifth of the number of women.
Coupled with the extremely high premature death rate, since then, the status of men and women has undergone subversive changes~
Due to the dispensability of men, the marriage system in the past has repeatedly changed
In the Xia Dynasty, only the rich and powerful could have husbands.
In the third year of Yuankang, the Shui family entered the palace and served the emperor.