五运六气理论的发生与演进

Review of the initiation and development of the theory of five circuits and six qi

五运六气是运用纪年天干地支推求气候物候及其对人类生命活动的影响，进而预测疾病、灾害及防治措施的术数体系。天文历法、医学及灾害知识、术数之学等，是构建五运六气的三方面认识来源。五运六气理论从发生到形成和延传，经历了滥觞期、酝酿期、奠立期、隐传期、经传期等多个历史时期。

The theory of five circuits and six Qi belongs to the Shushu system （schemes in ancient China）, speculating the climate, phenology and their influence on life activity with the heavenly steins and earthly branches. It predicts diseases and calamities, and provides preventive measures. The knowledge source of this theory is mainly composed of three aspects ： astronomy and the calendar, medicine and calamity, and Shushu. It has gone through many stages （initiation stage, embryonic stage, establishment stage, folk stage, official stage, etc. ） for its initiation, formation and development.