Calling prostitutes transforms sex into a low-barrier, high-reward, emotionally taxing instant-gratification game, with almost every prostitute offering a sense of novelty. The experience is akin to emperors in the Ming and Qing dynasties of China choosing concubines for their nights. Just like ancient emperors flipping through nameplates in their harem to decide which concubine to favor that evening, prostitutes are treated like "harem beauties," freely chosen and enjoyed at any time, without emotional burden, responsibility, or aftereffects.