Discussion on the five-yun six-qi calendar model in Huangdi Neijing
To clarify the five-yun six-qi calendar model is the foundation and premise of carrying out subsequent confirmatory and applied research on the Yun-Qi theory of Huangdi Neijing.The five-yun six-qi calendar in Huangdi Neijing uses 60 Jia-Zi Gan-Zhi to express the changes in Qi-Shu in heaven and earth.It mainly includes two levels:the change rhythm of qi in'Tag the Day by Gan-Zhi'to express the'six-sixty sections of heaven'in a year,and the change cycle of qi in'Tag the Year by Gan-Zhi'to express the'coincidence of five-yun and six-qi'in 30 years.The five-yun six-qi calendar in Huangdi Neijing is essentially a quarter calendar,which belongs to the yin-yang calendar.The part of the solar calendar takes 3651/4days as the year and takes the 24 solar terms as the basic solar calendar structure,based on which the'six steps division model'is established.It has become the main calendar framework of the theory of six Ke-Qi of three-yin and three-yang.The part of the lunar calendar takes29499/940days as the synodic month and takes the 12 synodic months as the basic lunar calendar structure,which is used to express the synodic period.It is mainly involved in the judgment of the actual qi transformation state of five-yun and six-qi.
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