The first three books of "Her Sexual Past", "Xie Yuqian's Years", "Peach Diary" and "Lingling's Nightmare" tell the stories of three different women, namely girls, young women, and prostitutes. "Liu Feng's Memoir of Philatelic" is the last book of "Her Sexual Past", written in the first person of male.Lingling's story was experienced when she was pimping in Dongguan. The risk of engaging in the sexual service industry is very high. No one protects girls from being raped and gang raped are common. Most girls are not really willing to go on this path and are forced to do helpless. Later, because they are easy to make money, they are unable to do other jobs. After all, eating sperm is easy to endure hardships.