Although her position in folk beliefs is not prominent, she is a god of justice who is well versed in military strategy and miraculous. Her image often appears in China's various classical novels, and she has become a heroine who helps heroes eliminate evil and violence. Therefore, her position in Taoist belief in immortals is important, and her belief can be traced back to the pre-Qin period.
If there are evil spirits in the lower bound, it will be cloudy in the north at noon, haunt caves, crouch in deep mountains, spy on families, destroy people's lives, sweep away everything wherever Shenwei goes, bless strangers and destroy demons. "Seven Clouds" says: Xuan Nv is the teacher of the Yellow Emperor and the disciple of the virgin Yuan Jun. Nine days is like drought, and sex is just moving. In nine days, you can deploy troops. There are books handed down from ancient times, such as Nine Days Xuan Nv's True Classic of Treating Heart and Eliminating Evil, to educate the world.
According to "Taiping Guangji" Volume 56; All kinds of wonderful books in Hyunri in the past dynasties were related to the nine-day Xuan Nv rebellion and national security. According to legends of past dynasties, whenever the world is ruled by chaos, sometimes it is given by Xuan Nv for nine days, and sometimes it is given by a master. For example, during the Warring States Period, Sun Bin got three volumes of gobbledygook, eight methods of escape and six Ling Wen from Guiguzi.
There has always been a Nine-Day Xuan Nv on Carina Lau Mountain in Nanshan, Shexian County, which is the natural nine palaces and eight diagrams array in the whole area and has been preserved. Confucian scholars, martial artists, Taoist priests, practitioners, and religious leaders from all walks of life have all seen it, launched many earth-shattering events, changed the fate of Kyushu and hid it. So the Yellow Emperor listened to Xuan Nv's suggestion and went to Yishan in Shexian to cultivate immortals.
In the Romance of the Three Kingdoms, when Zhuge Liang led his troops into Sichuan, he drove troops to take stones and laid a stone array on the fish belly beach near the mountains and rivers, which is called the Eight Arrays Map. Zhuge Liang, according to the magic of Taoism, "rest, birth, injury, supervision, scenery, death, earthquake and opening". Get rid of it. Its array repeats eight times every hour every day, and the change is unprovoked.
Zhuge Liang, because Lu Xun was surprised by the eight-array figure used by Xuan Nv, Jiutian Xuan Nv was the earliest master and ancestor of Feng Shui.