Begging for grain originated in the pre-Qin period, about the same time as qi-moving. Among them, the collection of etiquette works before Qin and Han Dynasties, Yi Ming Core Monument, said: "Carnivores are brave, food eaters are clever, gas eaters are alive, and those who don't eat will not die." It is the earliest theoretical basis of the art of crossing the valley. There are similar records in Huainanzi Dizhi. There are also examples in The World. For example, in the Spring and Autumn Period, there was a lone leopard in the State of Lu, who lived in the mountains and drank streams. "I don't wear silk and hemp, I don't eat whole grains, and I still wear the color of a boy." He is the earliest practitioner of breaking the valley recorded in Historical Records. In 1973, among the silk books unearthed from Mawangdui Han Tomb in Changsha, there is an article "Going to the Valley to Eat Qi", which is the earliest extant work before the Han Dynasty. There is a cloud: "Those who go to the valley eat pyrrosia. ..... first, light feet, strong body. Then you can cook (blow) and see the benefits. " It means that when you first arrive in the valley, you often have top-heavy hunger, which must be overcome by "blowing". Here, the combination of Bi Gu and Hodge, like the deliberate combination of Hodge and Dao in Zhuangzi, seems to indicate the initial existence of these three technologies in the pre-Qin period, that is, their simultaneous appearance.

After the establishment of Taoism, many people inherited this technology and practiced the valley. According to the biography of Emperor Wu of the Han Dynasty, Wang Zhen, an alchemist in the Eastern Han Dynasty, was "broken for more than 200 years" (when it was the mistake of "Japan"-the note of the cited person), with beautiful meat and a horse and a horse, with several people. "Biography of Fang Shu in the Later Han Dynasty" records: "(Hao) Meng can save energy for five or ten years, including jujube pits and not eating." There is a story about how to be kind to the valley in Cao Zhi's Taoist Debate, saying that he once "bowed to the place where he sleeps" and "stayed out of the valley for a hundred days, ... walking and living comfortably". Among the alchemists attracted by Cao Cao, Zuo Ci, Feng Junda and Lu all have divination. Ge Hong, a Taoist priest in the Eastern Jin Dynasty, opposed the idea that one-way crossing the valley could lead to immortality (he advocated that the person who chooses magic should be Xi, especially the elixir). He believes that one-way crossing the valley can lead to immortality, which is a "one-sided theory" of practitioners, but he does not doubt the fitness and longevity effect of crossing the valley. He said in "Miscellaneous Answers in Bao Puzi": "The remainder is more than three years and two years, all of which are light in body and good in color." Give a concrete example to prove that Shi Chun, a Taoist priest in the Three Kingdoms, often didn't eat for a month or a hundred days when he was treating people with qi. Hearing this, Emperor Wudi became suspicious and said, "This is called taking medicine and asking people to prepare. In spring, I only ask for three or two liters of water. After more than a year, the color of spring is fresher and the strength is the same. " "Feng Shengsheng, but swallowed their anger to break the valley for three years. Watching him climb the mountain all day and carrying heavy loads. " According to the Records of Wei's Old Records, Kou Qian, a Taoist priest of the Northern Wei Dynasty, gave him a recipe for inducing valley under the pretext of Laojun, and all the disciples got it. Donglai Taoist Wang lived in seclusion in Hanshan Mountain and was isolated from the world for more than 40 years. "Seven Signs of Yun Qi" has been published for five years. Sun Youyue "practiced calligraphy but took Guxian Pill for 67 years, and his face was light, moist and clean." According to the Biography of the Hermit in the Southern History, Deng Yu, a Taoist priest in Nanyue, "broke the valley for more than 30 years, only carrying water with mica sheets and reciting the Great Cave Sutra day and night." Tao Hongjing "Good Guidance Valley. He has lived in seclusion for forty years, and he is still very capable in his eighties. " "Biography of the Northern History of the Cottage" said that Taoist Chen and Xu Ze "refused to raise cotton wool, although it was cold in winter." According to the Book of the Old Tang Dynasty, Pan Shi, a Taoist priest in the Tang Dynasty, lived in Songshan for more than 20 years, "but drank water from pine leaves." His disciple Sima Chengzhen also taught him how to lure bait. According to the history of Song Dynasty, Chen Tuan, a Taoist priest in the early Song Dynasty, lived in Jiushiyan, Wudang Mountain. He "lived for more than 20 years, but he drank several cups every day". According to the biography of Ji Fang in Song Dynasty, Zhao Tiansheng "doesn't eat, but he has a fresh air. Every time I smell fire and eat gas, I vomit, only fruit and spring water are produced. " Chai Xuantong "over 100 years old, he is good at avoiding the valley and whistling, only drinking." History books and Taoist books are too numerous to mention. It can be seen that from the Han Dynasty to the Song Dynasty, the technique of crossing the valley has been very popular in Taoism.

Historical records show that there are so many people crossing the valley for months, years or even decades, which is inevitably exaggerated, but it is not purely false. 198865438+1October 7, the third edition of People's Daily, with the title "Macheng peasant girls can't speak and act freely for ten years", reported that Xiong Ruoding, a 25-year-old girl from Yuexingtang Village, Xiongjiapu District, Macheng City, Hubei Province, was only fifteen years old and suddenly became seriously ill and was dying. She stopped drinking water after she got out of danger. So far, she has not eaten for ten years. Surprisingly, after eight years in bed, she has been able to walk independently, talk and laugh freely, and do some housework. This is really a miracle on earth. Now in the 2 1 century, people's living and eating environment has changed, and health preservation, fitness, weight loss and detoxification are more popular. At the same time, during this period, the professional training and legitimacy of natural health care practitioners made Bigu a bright spot in history. Recently, China Ancient Books Publishing House published Ding Zhu's book "Zongyuan Pigu Health" in May of 20 13, which introduced the history, culture, theory, practice methods, matters needing attention, and the exchange of students' experiences, which is a good reference for beginners.