运气理论中干支应用的背景及其意义

Clinical Significance and Background of the Heavenly Stems and Earthly Branches in Yun Qi Theory

十天干原本就是表达一个太阳回归年的十个时节,十二地支与斗建相对应,是用于标记一年十二个朔望月的名称。运气理论将天干地支纳入阴阳、五行构架之中,使之与时空关系密切的气候变化勾连在一起,从而通过表达不同年份、不同时节的干支,能够对相关年份、时节的气候变化进行预测,这就是"天干化运""地支化气"的思维背景。

The ten heavenly stems are used to express ten seasons （ one season stood for one month in the ancient timeand a month was 36 days） of a solar tropical year; the twelve earthly branches, corresponding to Doujian （it was appliedto define the beginning point of solar and lunar month in ancient time）, are the names marking the twelve synodic months（ the synodic month was used to calculate eclipse cycles）. The YunQi theory, namely five - movements and six - climatestheory, bringing the heavenly stems and earthly branches into the framework of Yin - yang and Five - elements theory,makes them connecting with climate changes strongly tying to space and time. The different heavenly stems and earthlybranches expressed in different years and seasons can be served as predicting climate changes of seasons in relevant years.Therefore, the constructed thinking patterns is developed the heavenly stems and earthly branches transform intomovements and qi respectively.