Bigu (grain avoidance)

Bigu (simplified Chinese: 辟谷; traditional Chinese: 辟穀; pinyin: bìgǔ; Wade–Giles: pi-ku; lit. 'avoiding grains') is a Daoist fasting technique associated with achieving xian "transcendence; immortality". Grain avoidance is related to multifaceted Chinese cultural beliefs. For instance, bigu fasting was the common medical cure for expelling the sanshi 三尸 "Three Corpses", the malevolent, grain-eating spirits that live in the human body (along with the hun and po souls), report their host's sins to heaven every 60 days, and carry out punishments of sickness and early death. Avoiding "grains" has been diversely interpreted to mean not eating particular foodstuffs (food grain, cereal, the Five Grains, wugu, or staple food), or not eating any food (inedia). In the historical context of traditional Chinese culture within which the concept of bigu developed, there was great symbolic importance connected with the five grains and their importance in sustaining human life, exemplified in various myths and legends from ancient China and throughout subsequent history. The concept of bigu developed in reaction to this tradition, and within the context of Daoist philosophy.