In the cosmology of the Wufang Shangdi, besides the Yellow Deity, the Black Deity ( Hēidì) of the north, winter and Mercury, is portrayed by Sima Qian as Huangdi's grandson, and is himself associated with the north pole stars. The Green Deity or Blue Deity ( Cāngdì or Qīngdì), of the east, spring, and identified with Jupiter, is frequently worshipped as the supreme God and its main temple at Mount Tai (the cult centre of all Eastern Peak Temples) is attested as a site for fire sacrifices to the supreme God since prehistoric times.