Warfare The association of this goddess with warfare is derived from the
Longyu Hetu (), presumably produced during the
Xin dynasty. This text describes the manifestation of the goddess herself in front of Huangdi () during his conflict against Chiyou (): Her intervention in warfare is a common narrative in Daoist texts, such as in texts from the
Zhongshu Bu () in the
Daozang (). These texts locate Jiutian Xuannü along the central median of the body and associate her with the circulation of breath, which nourishes the vital spirit and provides longevity. The
Taishang Laojun Zhongjing (), probably dating to the 5th century, mentions that she is "located between the kidneys, dressed only in the white of Venus and the brilliant stars. Her pearl of Great Brilliance shines to illuminate the inside of the adept's whole body, so that he can extend his years and not die." In
Ge Hong's
Baopuzi, it is noted that the goddess Jiutian Xuannü helps prepare elixirs with other deities, that adepts erected altars to the goddess when they create elixirs of metal, and that she had discussed
calisthenics and diet with
Huangdi. From the Han dynasty onwards, these handbooks would be familiar to the upper class. On the other side, during the Han dynasty,
Wang Chong had criticized the sexual arts as "not only harming the body but infringing upon the nature of man and woman." During the
Tang dynasty and earlier periods, Jiutian Xuannü was often associated with the sexual arts. The
Xuannü Jing remained a familiar work among the literati during the
Sui and Tang dynasties. The
Dongxuanzi Fangzhong Shu (), which was likely written by the 7th-century poet
Liu Zongyuan, contains explicit descriptions of the sexual arts that was supposedly transmitted from Jiutian Xuannü. The sexual practices that Jiutian Xuannü supposedly taught were often compared to alchemy and physiological procedures for prolonging life. In
Ge Hong's
Baopuzi, there's a passage in which Jiutian Xuannü tells Huangdi that sexual techniques are "like the intermingling of water and fire—it can kill or bring new life depending upon whether or not one uses the correct methods." ==Development==