BEIJING (Reuters) - China is conducting its first nationwide female sex survey...organized by the Chinese Institute of Sexology and Chinese Medical Association via Sina.com...A smaller survey a decade ago concluded that 50% of Chinese women did not experience orgasm during sex...Attitudes toward sex relaxed after China began Western-style market reforms in 1978, unleashing a boom in adolescent dating, adultery, prostitution and other kinds of promiscuity.