In ancient times, besides giving birth to children to continue the family line, 'concubines' also had another function: How sad for future generations!
In feudal China, it was normal for rich and powerful men to have 'three wives and four concubines'.The dark side of feudal mandarins: Falling and drowning while attending the king
The rules of the officialdom show an extremely harsh feudal society, and are rarely shown in historical dramas.Concubines often seek to be 'intimate' with eunuchs: Secret rules in the harem to achieve this!
It turns out that concubines and eunuchs often have this hidden relationship.