Book Category Asia portal. This suggests that the 'perverseness' attached to homosexuality in mainland China is not purely informed by a biological discourse, but, depending on the circumstances, can also be informed by accepted notions of cultural and social legitimacy. The following terms are not standard usage; rather, they are colloquial and used within the gay community in mainland China, Hong Kong, and Taiwan. Until adopting European values late in their history, the Chinese did not even have nouns to describe a heterosexual or homosexual person per se. Confucianism, being primarily a social and political philosophy, focused little on sexuality, whether homosexual or heterosexual. There is a tradition of clearly erotic literature , which is less known. There are also many gay websites and LGBT organisations which help organise gay rights' campaigns, AIDS prevention efforts, film festivals and pride parades.