What is the name of the day before the spring breeze?

The day before the vernal equinox is four days away from the sun, and the day before the vernal equinox, autumnal equinox, summer solstice and winter solstice in the 24 solar terms is technically called "leaving the sun". There are four such days throughout the year, so it is called "four days away from the sun".

"Yumen Jing" said: "Those who leave, Yin and Yang belong to the previous dynasty." The vernal equinox and the autumnal equinox, even the summer solstice and the 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. On the "yellow calendar", the words "four days away from Japan, no major events" must be written, which is generally avoided when choosing a day. According to the traditional study of choosing a day, it is wrong to get married, move into a house, start a business, build a house, travel and take up a job on the fourth day of departure.