What is Gender or Yin and Yang These equate directly with the traditional astrological terms: diurnal ('of the quality of day') and nocturnal ('of the quality of night. Yang means Sun or Light in Mandarin and Yin means Moon or shade. While opposite in meaning the two principles interact and are dependent on the other for existence. This principle of opposites applies throughout cosmic philosophies and is fundamental to the whole idea of energy exchange, both emanating from and creating Chi...