What did the imperial secretary and Scheeren do in the Han Dynasty?

"Scheeren" in Han Dynasty inherited the concept of "retainer", which refers to "private officials" in large families, not official positions. Scheeren calls himself a "servant"

Imperial secretary: the general term for concubines and maids. Emperor Cheng of the Western Han Dynasty ordered the establishment of a harem system. Among the nine grades of the emperor's harem, the imperial secretary ranked eighth and was paid by five officials. Imperial secretary was abolished in Northern Song Dynasty, and imperial secretary became empty. They have been called bridesmaids since the Southern Song Dynasty.