Taoist magic ternary

Of the 24 solar terms in a year, one solar term is 15 days, which is divided into three five days, and every five days is 1 yuan, which is called upper, middle and lower ternary respectively. Daoism is arranged according to which solar term and which time element. Before summer, winter is yin dun, before winter, summer is yang dun. Song's formula is:

Yangdunge

Solstice in winter 174, slight cold push 285.

It's true that the vernal equinox is cold, Mangzi 639.

Grain Rain's youngest son is five and twenty-eight, and beginning of spring is eight and fifty-two.

Long summer Qingming 417,963 from rainy season.

Yindunge

1936 summer solstice white dew, 1925 summer heat reunion.

Autumnal equinox summer heat 7 14, beginning of autumn 258.

The first frost is light snow 582 and heavy snow 47 1.

147 in summer and 693 in early winter.

Beginning of spring, Changxia, beginning of autumn and beginning of winter, as well as the summer solstice at the vernal equinox and the winter solstice at the autumnal equinox are the positions in Jiugong Bagua, and the position in Jiugong Bagua is northwest 6, so beginning of winter's position is 6. In the north, it is 1, so the number of upper yuan games in winter is1; Eight other hexagrams in Northeast China, beginning of spring 8, Oriental True Gua 3 and Equinox 3, Southeast Yin Gua 4 and Changxia 4, Nanli Gua 9 and Summer Solstice 9, Southwest Kungua 2 and beginning of autumn 2, West Dugua 7 and Equinox 7. Something like that.