According to legend, Shennong's mother swallowed the vapor of a dragon and nine days later, her son was born on the banks of the river Jiang. He had a bull (or ox's) head with a man's body. He developed rapidly and began speaking after three days, eventually growing to over eight feet tall. In
Chinese mythology, he obtained a mystical book of herbs from a Taoist master and later journeyed across China to record 365 medicinal herbs and fungi that became essential in traditional Chinese medicine. Shennong also taught humans the use of the plow, aspects of basic agriculture, and the use of
cannabis. Possibly influenced by the
Yan Emperor mythos or the use of
slash-and-burn agriculture, Shennong was a god of burning wind. He was also sometimes said to be a progenitor to, or to have had as one of his ministers,
Chiyou (and like him, was
ox-headed, sharp-horned, bronze-foreheaded, and iron-skulled). Shennong is also thought to be the father of the
Yellow Emperor () who carried on the secrets of medicine, immortality, and making gold. According to the eighth century AD historian
Sima Zhen's commentary to the second century BC
Shiji (or,
Records of the Grand Historian), Shennong is a kinsman of the
Yellow Emperor and is said to be an
ancestor, or a
patriarch, of the ancient forebears of the Chinese. After the
Zhou dynasty, Shennong was thought to have existed within it by some "ancient Chinese historians" and religious practitioners as the "deified" form whose descendants later founded the Zhou. As an alternative to this view, Shennong was also thought of in the era of the
Hundred Schools of Thought as a culture hero rather than a god, but one with a supernatural digestive system who ate a specimen of every single plant that existed in the time of the Hundred Schools to find which ones were edible by humans. In the third century BCE, during times of political crisis and expansionism and wars among Chinese kingdoms, Shennong received new myths about his status as an ideal prehistoric ruler who valued laborers and farmers and "ruled without ministers, laws or punishments." ==In literature==