What do you mean, four days off and four days off?

Four breaks and four breaks refer to solar terms. Four Farewells refer to the day before the vernal equinox, autumnal equinox, summer solstice and winter solstice, which is called "Departure from Japan", and four Farewells refer to the day before beginning of spring, Changxia, beginning of autumn and beginning of winter, which is called "Departure from Japan".

The saying that four days are apart is mainly to remind people that some important days in daily life should be carried out according to the time nodes of natural laws. "Yumen Jing" says: Those who leave, Yin and Yang divide into former dynasties. Equinox and autumnal equinox, even the summer solstice and winter solstice. The day before means the day before. The day before the vernal equinox is called "Spring Festival". The day before the summer solstice is called the fire prevention period; The day before the autumnal equinox is called the golden calendar; The day before the winter solstice is called water separation.

The so-called "absolute", just like the literal meaning, means to be cut off, exhausted, and finished. After the four wonders, it is four, that is, spring and winter. When summer begins, spring ends; When autumn stands, summer has passed; Winter begins and autumn ends. In contrast, the word "Li" in "Si Li" is the beginning of arrival.