How to divide the Yangdun Bureau?

"Yang Dun Six innings" is a term in Daoism.

The ancients added the elements of time and space-year, month, day and time, such as the Ten Heavenly Stems, Nine Planets, Eight Doors and Ba Shen. According to certain rules, they form the calculation form of Daoism magic through arrangement, deduction and combination prediction. It is derived from the solar terms of the lunar calendar. From the solstice in winter to the solstice in summer, Yang Dun is used for six months, and Yin Dun is used from the solstice in summer to the solstice in winter. Yin dun and Yang dun each have nine dun bureaus.

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