Liu Dalin, known as "the Chinese Kinsey," interviewed over 20,000 people on the mainland for his survey on Chinese sexual culture. He says regretfully that sex is the realm of mainland Chinese society that is darkest and most distorted. "Everyone is doing it, but no one can talk about it."
在大陸完成中國性文明兩萬例調查報告、有「中國的金賽博士」之稱的劉達臨就感慨說，中國社會裡向來最被歪曲、最黑暗的領域就是性領域，「每個人都在做，卻不能講。」