The history books say that Guiguzi is a strategist of long and short lengths; Legend says that he was a wise man with great powers; Religious stories say that he was the god of the unknown prophet; According to folklore, he was a predictor of good fortune and evil. In the history of culture, he is a scholar on a par with Laozi, Sun Tzu, Confucius, Mencius, Zhuangzi, Xunzi, Mozi, Han Feizi and other sages.

There are many legends about Guiguzi.

Legend has it that Yunmeng Mountain, 30 miles west of Chaoge, the capital of the original Shang Dynasty, has two peaks on the mountain: Jianxiu Peak and Longwang Peak, there is a natural cave on the cliff between the two peaks, there is a clear spring in the hole, which flows into the river. This cave is the Guigu Cave. It turned out that a long time ago, there was no rain in the Yunmeng Mountain area for a long time, and there was a shortage of water everywhere, and the kind farmer Qinglong looked for water sources everywhere and rescued a small goldfish in a dry pool. The kind-hearted Qinglong asked Xiaolongnu to rescue the villagers who suffered from drought, and Xiaolongnu was moved to make a private proposition, and secretly drilled a "sea eye" to introduce seawater into Yunmeng Mountain. After the dragon king found out, he punished the little dragon girl and the farmer Qinglong, and the little dragon girl turned into a dragon spring in the mountain, and Qinglong turned into a ridge that protects the spring water - "green dragon back". After many years, the spirit of the little dragon girl was born in the royal family's house in Wangzhuang, south of the capital Chaoge, and the child was named Ruixia after birth. Another year there was a drought, and only one ear of grain was planted on the three hectares of land of the Wang family. Ruixia's maid ring rubbed this peculiar ear of grain, the ear of grain turned into a pearl, Ruixia took the pearl and played with it, the pearl strangely got into Ruixia's mouth, and soon Ruixia became pregnant, and she was kicked out of the house because she was unmarried and pregnant. The homeless Ruixia gave birth to a boy in the cave of Yunmeng Mountain. Ruixia gave birth to a child because of the miraculous ears of grain, so she named the child Guiguzi. It turned out that Ruixia was reincarnated by the little dragon girl, Gu Sui was transformed by Qinglong's spirit, and the cave where the child was born was the "Ghost Valley Cave". It is said that when Guiguzi grew up, he went to Taimur Mountain to worship Huayuan Zhenren as a teacher and learn Taoism. When Huayuan Zhenren returned to heaven, he left Guiguzi a roll of bamboo slips, which was a wordless book of heaven, not a word was seen during the day, but there were golden words at night, which was the later classic of vertical and horizontal learning.

According to Feng Menglong's more serious and true historical novel "Chronicles of the Eastern Zhou Dynasty", there is a valley in the boundary of Zhou Zhiyang City, with deep mountains and dense trees, unfathomable, and not a place where people can live, so it is called "Ghost Valley". There is a hermit in the valley, who calls himself Guiguzi, and is said to be a person from the time of Jin Ping, surnamed Wang. He collected medicine and cultivated with Mo Zhai of the Song Dynasty in Yunmeng Mountain. Mozi does not marry a wife or raise children, travels the world, helps people and goods, and helps the poor. The king of Guiguzi is thorough through the sky, and his knowledge is profound, unparalleled: "A mathematics, the sun and the stars are like latitudes, in the palm of his hand, occupy the past and the future, and everything is verified; The second is military science, six Tao and three strategies, infinite changes, marching in formation, ghosts and gods; The third is to study abroad, remember a lot, judge the situation reasonably, spit out arguments, and don't take a thousand mouths; Fourth, it is said that he was born to learn, cultivate his true nature, take food and guide, but he is sick and prolonged, and he can be promoted. ”

Since Mr. Guigu is well aware of the immortal family's extraordinary skills, why should he condescend to the world? It turned out that he was just going to surpass a few smart disciples and return to the fairy realm together, so he lived in the Ghost Valley. He lived in seclusion in the Ghost Valley for countless years, and his disciples were also countless. It is said that his most outstanding disciples are Sun Bin, Pang Juan, Su Qin, and Zhang Yi. The first two were famous military strategists during the Seven Kingdoms War, while the last two were famous columnists during the Warring States period. In addition, Fan Li, a strategist who helped King Goujian of Yue to lie down and taste his courage, defeated Wu Wangfucha and successfully restored the country, is also said to be a disciple of Guiguzi; Mao Sui, a famous diplomat during the Warring States Period, is also said to be a disciple of Guiguzi; Xu Fu, a master of medicine collection and health preservation in the Qin Dynasty, is also said to be a disciple of Guiguzi.

Legend has it that Guiguzi also has a junior sister, that is, the Nine Heavens Xuannu who has the Nine Heavens Secret Book and is familiar with the heavens, humanity, and earth's leylines.