What does the ancient concubine mean?

"Concubine" refers to the female slaves in the pre-Qin, Qin and Han dynasties (the Han dynasty recorded that "I was given to the Hou family in Pingyang and interacted with the Hou concubine Wei Wei", where Wei Wei was a female slave). Because under the slavery system, the male master often has sex with the female slave, and even makes the female slave the exclusive object of the male master, the meaning of concubine begins to change. When a noble woman in the Zhou Dynasty got married, she needed a sister-in-law or nephew to accompany her. She was called a concubine, and she became a wing room, ranking higher than a concubine. Later generations and concubines gradually became inseparable.

Concubine, also known as aunt and concubine, also known as mistress and concubine, mainly refers to the female spouse who is inferior to his wife in the structure of polygamy.