In fact, the maid in the room is not much different from the prostitute in the brothel. The only difference between them is that one is a spender and the other is a dedicated person who enjoys it all his life. Think about it, under the ancient polygamy, it was normal for men to have sex. However, in a big family, when a man makes love, he finds that some inferior people come to pollute his body, and it is a joke to spread it out, so the title of "maid in the room" is derived.
The girl who passed the room lost the function of pregnancy.
The maid will definitely have sex with the man, but if she has not been pregnant, she may have lost her pregnancy function. Many women are pretreated before being sent to be maids. In ancient times, the most common usage was to use soup or incense to make it lose its pregnancy function. Think about it, mistress is willing to give the maid to her husband for pleasure. What does she want? Isn't it to reduce the illegitimate children outside and ensure that her husband is under her control?
After serving, the maid in the same room will feed a special soup for one night, commonly known as birth control pills.
There is also a saying that girls who pass by the room excrete the liquid in their bodies through birth control pills or after men and women pass through certain postures. Generally, a kind person will use the method of soup and medicine as long as she drinks a bowl of medicine. If it is violent, it is to turn it over and attack her uterus to prevent her from getting pregnant. Think about it, who wants to be treated so inhumanely if it is not necessary?
There are many maids in the room, who can take turns to serve during the safety period, reducing the possibility of pregnancy.
According to modern parlance, women have a safety period. If the maid is allowed to serve during the safety period, the chance of pregnancy is very small. In ancient times, there was no such thing as a safe period, but Chinese medicine practitioners were not vegetarian, and they must know the law more or less, so I guess this is one of the reasons why they are not pregnant.